Publications

| Refereed Publications | Conference Proceedings | Theses | | Talks | | Posters |

You can reach all my refereed publications from the following online sources:
NASA Astrophysics Data System (ADS) or ADS Bumblebee
Web of Science Researcher ID: C-5257-2011 (Click twice if link does not work)
: 0000-0001-6197-2864

Refereed Publications


First Author Publications

50. Yıldız, U. A.; Kristensen, L. E.; van Dishoeck, E. F.; Hogerheijde, M. R.; Karska, A.; Belloche, A.; Endo, A.; Frieswijk, W.; Guesten, R.; van Kempen, T. A.; Leurini, S.; Nagy, Z.; Perez-Beaupuits, J. P.; Risacher, C.; van der Marel, N.; van Weeren, R. J.; Wyrowsky, F.; APEX-CHAMP+ high-J CO observations of low--mass young stellar objects: IV. Mechanical and radiative feedback; Astronomy & Astrophysics, Vol. 576, A109
49. Yıldız, U. A.; Acharyya, K.; Goldsmith, P. F.; van Dishoeck, E. F.; Melnick, G.; Snell, R.; Liseau, R.; Chen, J-H.; Pagani, L.; Bergin, E.; Caselli, P.; Herbst, E.; Visser, R.; Gerin, M.; Deep observations of O2 toward a low-mass protostar with Herschel-HIFI; 2013, Astronomy & Astrophysics, Vol. 558, A58
Press Release: Herschel Uncovers a Dearth of Oxygen near a New Star
48. Yıldız, U. A.; Kristensen, L. E.; van Dishoeck, E. F.; San Jose-Garcia, I.; Karska, A.; Harsono, D.; Tafalla, M.; Fuente, A.; Visser, R.; Jørgensen, J.; Hogerheijde, M.; Water in low-mass star-forming regions with Herschel: High-J~CO survey observed with HIFI; 2013, Astronomy & Astrophysics, Vol. 556, A89
47. Yıldız, U. A.; Kristensen, L. E.; van Dishoeck, E. F.; Belloche, A.; van Kempen, T. A.; Hogerheijde, M. R.; Guesten, R.; van der Marel, N.; APEX-CHAMP+ high-J CO observations of low--mass young stellar objects: III. NGC~1333~IRAS~4A/4B envelope, outflow and UV heating; 2012, Astronomy & Astrophysics, Vol. 542, A86
46. Yıldız, U. A.; van Dishoeck, E. F.; Kristensen, L. E.; Visser, R.; Jørgensen, J. K.; Herczeg, G. J.; van Kempen, T. A.; Hogerheijde, M. R.; Doty, S. D.; Benz, A. O.; Bruderer, S.; Wampfler, S. F.; Deul, E.; Bachiller, R.; Baudry, A.; Benedettini, M.; Bergin, E.; Bjerkeli, P.; Blake, G. A.; Bontemps, S.; Braine, J.; Caselli, P.; Cernicharo, J.; Codella, C.; Daniel, F.; di Giorgio, A. M.; Dominik, C.; Encrenaz, P.; Fich, M.; Fuente, A.; Giannini, T.; Goicoechea, J. R.; de Graauw, Th.; Helmich, F.; Herpin, F.; Jacq, T.; Johnstone, D.; Larsson, B.; Lis, D.; Liseau, R.; Liu, F.-C.; Marseille, M.; McCoey, C.; Melnick, G.; Neufeld, D.; Nisini, B.; Olberg, M.; Parise, B.; Pearson, J. C.; Plume, R.; Risacher, C.; Santiago-Garcia, J.; Saraceno, P.; Shipman, R.; Tafalla, M.; Tielens, A. G. G. M.; van der Tak, F.; Wyrowski, F.; Dieleman, P.; Jellema, W.; Ossenkopf, V.; Schieder, R.; Stutzki, J.; Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region; 2010, Astronomy & Astrophysics, Vol. 521, L40

Co-Author publications

45. Kristensen, L.E.; van Dishoeck, E.F.; Mottram, J.C.; A. Karska, A.;Yıldız, U. A.; Bergin, E.A.; Bjerkeli, P.; Cabrit, S.; Doty, S.; Evans, N.J.; Gusdorf, A.; Harsono, D.; Herczeg, G.J., Johnstone, D.; J{\o}rgensen, J.K.; van Kempen, T.A.; Lee, J.-E.; Maret, S.; Tafalla, M.; Visser, R.; and Wampfler, S.F.; Origin of warm and hot gas emission from low-mass protostars: Herschel-HIFI observations of CO J=16--15? I. Line profiles, physical conditions, and H2O abundance 2017, Astronomy & Astrophysics, in press
44. Heyer, M.; Goldsmith, P. F.; Yıldız, U. A.; Snell, R. L.; Falgarone, E.; Pineda, J. L.; Striations in the Taurus molecular cloud: Kelvin-Helmholtz instability or MHD waves?; 2015, Monthly Notices of the Royal Astronomical Society, Volume 461, Issue 4, p.3918-3926
43. Goldsmith, P. F.; Yıldız, U. A.; Langer, W. D.; Pineda, J. L.; Herschel Galactic plane survey of [N II] fine structure emission; 2015, Astrophysical Journal, Vol 814, A133
42. Carney, M. T.; Yıldız, U. A.; Mottram, J. C.; van Dishoeck, E. F.; Ramchandani, J.; Jorgensen, J. K.; Classifying the embedded young stellar population in Perseus and Taurus & the LOMASS database; 2015, Astronomy & Astrophysics, Vol. 586, A44
41. Santangelo, G.; Nisini, B.; Codella, C.; Lorenzani, A.; Yıldız, U. A.; Antoniucci, S.; Bjerkeli, P.; Cabrit, S.; Giannini, T.; Kristensen, L.; Liseau, R.; Mottram, J. C.; Tafalla, M.; van Dishoeck, E. F.; Water distribution in shocked regions of the NGC1333-IRAS4A protostellar outflow; 2014, Astronomy & Astrophysics, Vol 568, A125
40. Fuente, A.; Cernicharo, J.; Caselli, P.; McCoey, C.; Johnstone, D.; Fich, M.; van Kempen, T.; Palau, Aina; Yıldız, U. A.; Tercero, B.; Lopez, A.; The hot core towards the intermediate mass protostar NGC7129 FIRS 2: Chemical similarities with Orion KL; 2014, Astronomy & Astrophysics, Vol 568, A65
39. Coutens, A.; Vastel, C.; Cabrit, S.; Codella, C.; Kristensen, L. E.; Ceccarelli, C.; van Dishoeck, E. F.; Boogert, A. C. A.; Bottinelli, S.; Castets, A.; Caux, E.; Comito, C.; Demyk, K.; Herpin, F.; Lefloch, B.; McCoey, C.; Mottram, J. C.; Parise, B.; Taquet, V.; van der Tak, F. F. S.; Visser, R.; Yıldız, U. A.; Deuterated water in the solar-type protostars NGC 1333 IRAS 4A and IRAS 4B; 2013, Astronomy & Astrophysics, Vol. 560, A39
38. van der Marel, N.; Kristensen, L. E.; Visser, R.; Mottram, J. C.; Yıldız, U. A.; and van Dishoeck E. F.; Outflow forces of low mass embedded objects in Ophiuchus: a quantitative comparison of analysis methods; 2013, Astronomy & Astrophysics, Vol. 556, A76
37. Green, J. D.; Evans, N. J., II; Jørgensen, J. K.; Herczeg, G. J.; Kristensen, L. E.; Lee, J-E.; Dionatos, O.; Yıldız, U. A.; Salyk, C.; and 12 co-authors; Embedded Protostars in the Dust, Ice, and Gas In Time (DIGIT) Key Program: Continuum SEDs, and an Inventory of Characteristic Far-Infrared Lines from PACS Spectroscopy; 2013, Astrophysical Journal, Vol. 770, 123
36, San Jose-Garcia, I; Mottram, J. C.; Kristensen L. E.; van Dishoeck E. F.; Yıldız, U. A.; van der Tak, F. F. S.; Herpin, F.; Visser, R.; McCoey, C.; Wyrowski, F.; Braine, J.; and Johnstone, D.; Herschel-HIFI observations of high-J CO and isotopologues in star-forming regions: from low- to high-mass; 2013, Astronomy & Astrophysics, Vol. 553, A125
35. Tafalla, M.; Liseau, R.; Nisini, B.; Bachiller, R.; Santiago-Garcia, J.; van Dishoeck, E. F.; Kristensen, L. E.; Herczeg G. J.; and Yıldız, U. A.; High-pressure water in bipolar outflows, Results from a Herschel-WISH survey; 2013, Astronomy & Astrophysics, Vol. 551, A116
34. Karska, A.; Herczeg, G. J.; van Dishoeck, E. F.; Wampfler, S. F.; Kristensen, L. E.; Goicoechea, J. R.; Visser, R.; Nisini, B.; San-Jose Garcia, I.; Bruderer, S.; Sniady, P.; Doty, S.; Fedele, D.; Yıldız, U. A.; Benz, A. O.; Bergin, E.; Caselli, P.; Herpin, F.; Hogerheijde, M. R.; Johnstone, D.; Jorgensen, J. K.; Liseau, R.; Tafalla, M.; van der Tak, F.; Wyrowski, F.; Water in star forming regions with Herschel (WISH) III. Far-infrared cooling lines in low-mass young stellar objects; 2013, Astronomy & Astrophysics, Vol. 552, A141
33. Caselli, Paola; Keto, Eric; Bergin, Edwin A.; Tafalla, Mario; Aikawa, Yuri; Douglas, Thomas; Pagani, Laurent; Yıldız, Umut A.; van der Tak, Floris F. S.; Walmsley, C. Malcolm; Codella, Claudio; Nisini, Brunella; Kristensen, Lars E.; van Dishoeck, Ewine F.; First detection of water vapor in a pre-stellar core; The Astrophysical Journal Letters, 2012, Vol. 759, 37
32. Kristensen, L. E.; van Dishoeck, E. F.; Bergin, E. A.; Visser, R.; Yıldız, U. A.; San Jose-Garcia, I.; Jørgensen, J. K.; Herczeg, G. J.; Johnstone, D.; Wampfler, S. F.; Benz, A. O.; Bruderer, S.; Cabrit, S.; Caselli, P.; Doty, S. D.; Harsono, D.; Herpin, F.; Hogerheijde, M. R.; Karska, A.; van Kempen, T. A.; Liseau, R.; Nisini, B.; Tafalla, M.; van der Tak, F.; Wyrowski, F.; Water in star-forming regions with Herschel (WISH): II. Evolution of 557 GHz 110-101 emission in low-mass protostars; 2012, Astronomy & Astrophysics, Vol. 542, A8
31. Fuente, A.; Caselli, P.; McCoey, C.; Cernicharo, J.; Johnstone, D.; Fich, M.; van Kempen, T.; van Dishoeck, E.; Yıldız, U. A.; Visser, R.; Kristensen, L.; Alonso-Albi, T.; Herpin, F.; Tisi, S.; The abundance of C18O and HDO in the envelope and hot core of the intermediate mass protostar NGC 7129 FIRS 2; 2012, Astronomy & Astrophysics, Vol. 540, A75
30. Herczeg, G. J.; Karska, A.; Bruderer, S.; Kristensen, L. E.; van Dishoeck, E. F.; Jørgensen, J. K.; Visser, R.; Wampfler, S. F.; Bergin, E. A.; Yıldız, U. A.; Pontoppidan, K. M.; Gracia-Carpio, J.; Water in star-forming regions with Herschel: highly excited molecular emission from the NGC 1333 IRAS 4B outflow; 2012, Astronomy & Astrophysics, Vol. 540, A84
29. Hogerheijde, M. R.; Bergin, E. A.; Brinch, C.; Cleeves, L. I.; Fogel, J. K. J.; Blake, G. A.; Dominik, C.; Lis, D. C.; Melnick, G.; Neufeld, D.; Panic, O.; Pearson, J. C.; Kristensen, L.; Yıldız, U. A.; van Dishoeck, E. F.; Detection of the Water Reservoir in a Forming Planetary System; 2011, Science, Vol. 334 no. 6054 pp. 338-340
28. Kristensen, L. E.; van Dishoeck, E. F.; Tafalla, M.; Bachiller, R.; Nisini, B.; Liseau, R.; Yıldız, U. A.; Water in low-mass star-forming regions with Herschel (WISH-LM). High-velocity H2O bullets in L1448-MM observed with HIFI; 2010, Astronomy & Astrophysics, Vol. 531, L1
27. Kristensen, L. E.; Visser, R.; van Dishoeck, E. F.; Yıldız, U. A.; Doty, S. D.; Herczeg, G. J.; Liu, F.-C.; Parise, B.; Jørgensen, J. K.; van Kempen, T. A.; Brinch, C.; Wampfler, S. F.; Bruderer, S.; Benz, A. O.; Hogerheijde, M. R.; Deul, E.; and the WISH Team; Water in low-mass star-forming regions with Herschel: HIFI spectroscopy of NGC 1333; 2010, Astronomy & Astrophysics, Vol. 521, L30
26. Caselli, P.; Keto, E.; Pagani, L.; Aikawa, Y.; Yıldız, U. A.; van der Tak, F. F. S.; Tafalla, M.; Bergin, E. A.; Nisini, B.; Codella, C.; van Dishoeck, E. F.; and the WISH Team; Water vapor toward starless cores: the Herschel view; 2010, Astronomy & Astrophysics, Vol. 521, L29
25. Bergin, E. A.; Hogerheijde, M. R.; Brinch, C.; Fogel, J.; Yıldız, U. A.; Kristensen, L. E.; van Dishoeck, E. F.; Bell, T. A.; and the WISH Team; Sensitive limits on the abundance of cold water vapor in the DM Tau protoplanetary disk; 2010, Astronomy & Astrophysics, Vol. 521, L33
24. Toloba, E.; Boselli, A.; Gorgas, J.; Peletier, R. F.; Cenarro, A. J.; Gadotti, D. A.; Gil de Paz, A.; Pedraz, S.; Yıldız, U. A.; Kinematic Properties as Probes of the Evolution of Dwarf Galaxies in the Virgo Cluster; 2009, Astrophysical Journal, Vol. 707, L17

Team publications

My major contribution is to create a WISH Herschel-HIFI data reduction pipeline that are used in the following WISH papers
23. Du, F.; Bergin, E. A.; Hogerheijde, M.; van Dishoeck, E. F.; Blake, G.; Bruderer, S.; Cleeves, I.; Dominik, C.; Fedele, D.; Lis, D. C.; Melnick, G.; Neufeld, D.; Pearson, J.; Yıldız, U. A.; Survey of cold water lines in protoplanetary disks: indications of systematic volatile depletion; 2017, Astronomy & Astrophysics, in press,
22. Mottram, J. C.; van Dishoeck, E. F.; Kristensen, L. E.; Karska, A.; San José-García, I.; Khanna, S.; Herczeg, G. J.; Andr, Ph.; Bontemps, S.; Cabrit, S.; Carney, M. T.; Drozdovskaya, M. N.; Dunham, M. M.; Evans, N. J.; Fedele, D.; Green, J. D.; Harsono, D.; Johnstone, D.; Jørgensen, J. K.; Könyves, V.; Nisini, B.; Persson, M. V.; Tafalla, M.; Visser, R.; Yıldız, U. A.; Outflows, infall and evolution of a sample of embedded low-mass protostars. The William Herschel Line Legacy (WILL) survey; 2017, Astronomy & Astrophysics, Vol 600, 99
21. Salinas, V. N.; Hogerheijde, M. R.; Bergin, E. A.; Cleeves, L. I.; Brinch, C.; Blake, G. A.; Lis, D. C.; Melnick, G. J.; Panic, O.; Pearson, J. C.; Kristensen, L.; Yıldız, U. A.; van Dishoeck, E. F.; First detection of gas-phase ammonia in a planet-forming disk; 2016, Astronomy & Astrophysics, Vol. 591, A122
20. Kama, M.; Bruderer, S.; Carney, M.; Hogerheijde. M.; van Dishoeck, E.; and 21 co-authors incl. Yıldız, U. A.; Observations and modelling of CO and [C I] in protoplanetary disks: First detections of [C I] and constraints on the carbon abundance; 2016, Astronomy & Astrophysics, Vol. 588, A108
19. van Kempen, T. A.; Hogerheijde, M. R.; van Dishoeck, E. F.; Kristensen, L. E.; Belloche, A.; and 20 co-authors incl. Yıldız, U. A.; Outflow forces in intermediate mass star formation; 2015, Astronomy & Astrophysics, Vol. 587, A17
18. Chen, J-H.; Goldsmith, P. F.; Viti, S.; Snell, R.; Lis, D. C.; Benz, A.; Bergin, E.; Black, J.; Caselli, P.; Encrenaz, P.; Falgarone, E.; Goicoechea, J. R.; Hjalmarson, A.; Hollenbach, D.; Kaufman, M.; Melnick, G.; Neufeld, D.; Pagani, L.; van der Tak, F.; van Dishoeck, E.; Yıldız, U. A.; Herschel HIFI observations of O2 toward Orion: special conditions for shock enhanced emission; 2014, Astrophysical Journal, Vol 793, A111
17 Liseau, R.; Goldsmith, P. F.; Larsson, B.; Pagani, L.; and 35 co-authors incl. Yıldız, U. A.; Multi-line detection of O2 toward rho Oph A; 2012, Astronomy & Astrophysics, Vol. 541, A73
16. Roelfsema, P. R.; Helmich, F. P.; Teyssier, D.; Ossenkopf, V.; Morris, P.; Olberg, M.; Shipman, R.; Risacher, C.; and 90 co-authors incl. Yıldız, U. A.; In-orbit performance of Herschel-HIFI; 2012, Astronomy & Astrophysics, Vol. 537, A17
15. Goldsmith, P. F.; Liseau, R.; Bell, T. A.; Black, J. H.; Chen, J-H.; Hollenbach, D; Kaufman, M. J.; Li, D.; Lis, D. C.; Melnick, G.; Neufeld, D.; Pagani, L.; Snell, R.; and 90 co-authors incl. Yıldız, U. A.; Herschel Measurements of Molecular Oxygen in Orion; 2011, Astrophysical Journal, Vol. 737, A96
14. van Dishoeck, E. F.; Kristensen, L. E.; Benz, A. O.; Bergin, E. A.; Caselli, P.; Cernicharo, J.; Herpin, F.; Hogerheijde, M. R.; Johnstone, D.; Liseau, R.; Nisini, B.; Shipman, R.; Tafalla, M.; and 59 co-authors incl. Yıldız, U. A.; Water in Star-forming Regions with the Herschel Space Observatory (WISH). I. Overview of Key Program and First Results; 2011, PASP, 123, 138V
13. Wampfler, S. F.; Herczeg, G. J.; Bruderer, S.; Benz, A. O.; van Dishoeck, E. F.; Kristensen, L. E.; Visser, R.; Doty, S. D.; Melchior, M.; van Kempen, T. A.; Yıldız, U. A.; and WISH Team; Herschel observations of the hydroxyl radical (OH) in YSOs; 2010, Astronomy & Astrophysics, Vol. 521, L36
12. Bruderer, S.; Benz, A. O.; van Dishoeck, E. F.; Melchior, M.; Doty, S. D.; van der Tak, F.; Stauber, P.; Wampfler, S. F.; Dedes, C.; Yıldız, U. A.; Pagani, L.; Giannini, T.; de Graauw, Th.; and the WISH Team; Herschel-HIFI detections of hydrides towards AFGL 2591 (Envelope emission versus tenuous cloud absorption); 2010, Astronomy & Astrophysics, Vol. 521, L44
11. Johnstone, D.; Fich, M.; McCoey, C.; van Kempen, T. A.; Fuente, A.; Kristensen, L. E.; Cernicharo, J.; Caselli, P.; Visser, R.; and 52 co-authors incl. Yıldız, U. A.; Herschel/HIFI spectroscopy of the intermediate mass protostar NGC 7129 FIRS 2; 2010, Astronomy & Astrophysics, Vol. 521, L41
10. Chavarria, L.; Herpin, F.; Jacq, T.; Braine, J.; Bontemps, S.; Baudry, A.; Marseille, M.; van der Tak, F.; Pietropaoli, B.; Wyrowski, F.; Shipman, R.; and 51 co-authors incl. Yıldız, U. A.; Water in massive star-forming regions: HIFI observations of W3 IRS5; 2010, Astronomy & Astrophysics, Vol. 521, L37
9. Benz, A. O.; Bruderer, S.; van Dishoeck, E. F.; Stauber, P.; Wampfler, S. F.; Melchior, M.; Dedes, C.; Wyrowski, F.; Doty, S. D.; and 60 co-authors incl. Yıldız, U. A.; Hydrides in Young Stellar Objects: Radiation tracers in a protostar-disk-outflow system; 2010, Astronomy & Astrophysics, Vol. 521, L35
8. Wyrowski, F.; van der Tak, F.; Herpin, F.; Baudry, A.; Bontemps, S.; Chavarria, L.; Frieswijk, W.; Jacq, T.; Marseille, M.; Shipman, R.; and 55 co-authors incl. Yıldız, U. A.; Variations in H2O+/H2O ratios toward massive star-forming regions; 2010, Astronomy & Astrophysics, Vol. 521, L34
7. Marseille, M. G.; van der Tak, F. F. S.; Herpin, F.; Wyrowski, F.; Chavarria, L.; Pietropaoli, B.; and 65 co-authors incl. Yıldız, U. A.; Water abundances in high-mass protostellar envelopes: Herschel observations with HIFI; 2010, Astronomy & Astrophysics, Vol. 521, L32
6. Sturm, B.; Bouwman, J.; Henning, Th.; Evans, N. J.; Acke, B.; Mulders, G. D.; and 37 co-authors incl. Yıldız, U. A.; First results of the Herschel key program ``Dust, Ice and Gas In Time'' (DIGIT): Dust and gas spectroscopy of HD 100546; 2010, Astronomy & Astrophysics, Vol. 518, L129
5. van Kempen, T. A.; Green, J. D.; Evans, N. J.; van Dishoeck, E. F.; and 41 co-authors incl. Yıldız, U. A.; Dust, Ice, and Gas In Time (DIGIT) Herschel program first results. A full PACS-SED scan of the gas line emission in protostar DK Cha; 2010, Astronomy & Astrophysics, Vol. 518, L128
4. van Kempen, T. A.; Kristensen, L. E.; Herczeg, G. J.; Visser, R.; van Dishoeck, E. F.; Wampfler, S. F.; Bruderer, S.; Benz, A. O.; and 46 co-authors incl. Yıldız, U. A.; Origin of the hot gas in low-mass protostars. Herschel-PACS spectroscopy of HH 46; 2010, Astronomy & Astrophysics, Vol. 518, L121
3. Nisini, B.; Benedettini, M.; Codella, C.; Giannini, T.; Liseau, R.; Neufeld, D.; Tafalla, M.; van Dishoeck, E. F.; and 47 co-authors incl. Yıldız, U. A.; Water cooling of shocks in protostellar outflows. Herschel-PACS map of L1157; 2010, Astronomy & Astrophysics, Vol. 518, L120
2. van der Tak, F. F. S.; Marseille, M. G.; Herpin, F.; Wyrowski, F.; and 54 co-authors incl. Yıldız, U. A.; Water abundance variations around high-mass protostars: HIFI observations of the DR21 region; 2010, Astronomy & Astrophysics, Vol. 518, L107
1. Fich, M.; Johnstone, D.; van Kempen, T. A.; McCoey, C.; Fuente, A.; Caselli, P.; Kristensen, L. E.; Plume, R.; Cernicharo, J.; and 52 co-authors incl. Yıldız, U. A.; Herschel-PACS spectroscopy of the intermediate mass protostar NGC 7129-FIRS 2; 2010, Astronomy & Astrophysics, Vol. 518, L86

Top

Conference Abstracts & Proceedings

24. Goldsmith, Paul; Heyer, Mark H.; Yildiz, Umut; Snell, Ronald L.; Falgarone, Edith; Pineda, Jorge L.; * Striae and MHD Waves in Molecular Clouds; 229th American Astronomical Society Meeting, Grapewine, Texas, USA, Jan 3-7, 2017 - Poster Presentation
23. Yildiz, Umut; Goldsmith, Paul; Pineda, Jorge; Langer, William; * Herschel Galactic plane survey of ionized gas traced by [NII]; 225th American Astronomical Society Meeting, Seattle, Washington, USA, Jan 4-9, 2015 - Poster Presentation
22. Yildiz, Umut; Acharyya, Kinsuk; Goldsmith, Paul; van Dishoeck, Ewine; and Herschel Oxygen Project Team; * Stringent limits of O2 abundance toward a low-mass protostar with Herschel-HIFI; 223rd American Astronomical Society Meeting, Washington DC, USA, Jan 4-9, 2014 - Poster Presentation
21. Yildiz, Umut; Acharyya, Kinsuk; Goldsmith, Paul; van Dishoeck, Ewine; Melnick, Gary; Snell, Ronald; Liseau, Rene; Chen, Jo-Hsin; Pagani, Laurent; Bergin, Edwin; Caselli, Paola; Herbst, Eric; Kristensen, Lars; Visser, Ruud; Lis, Dariusz; Gerin, Maryvonne; * Deep O2 observations toward a low-mass protostar with Herschel-HIFI; Protostars and Planets VI, Heidelberg, Germany, Jul 15-20, 2013 - Poster Presentation
20. San Jose-Garcia, I.; Mottram, J. C.; van Dishoeck, E. F.; Kristensen, L. E.; Yildiz, U. A.; High-J CO lines from low- to high-mass YSOs: the dynamics of protostellar envelopes; Protostars and Planets VI, Heidelberg, Germany, Jul 15-20, 2013
19. Umut A. Yildiz, Ewine F. van Dishoeck, Lars E. Kristensen; Star Formation with sub-/mm Astronomy - Milimetre/milimetre-alti Astronomisi ile Yildiz Olusumu, 18th Turkish National Astronomy Congress, Malatya, Turkey, Aug 27-31, 2012 - Invited Talk
18. Umut A. Yildiz, Arif Solmaz, Ozgecan Onal, Halit Mirahmetoglu, A. Talat Saygac, Mikail Gunes, Mustafa K. Yildiz, Umit F. Ozyar, Ozge Sahin, M. Rasid Tugral, Gokhan Atmaca, Cenk Kayhan, Cahit Yesilyaprak, Nazli D. Dagtekin, Ekrem Yasar, Mutlu Coban, Betul Canimkurbey, Pelin Ozturk, Songul Tokali, Gonca Salman, Hatice Zor, Asli Sensoy Sitki C. Inam, Firat Kocak, Tuncay Ozdemir, Cagri Erdogdu, Fatma Nur Aki, Mustafa Ekinci, Cagatay K. Donmez, Ilham Nasiroglu, Aycin Aykutalp, Seyit Hocuk, M. Fatih Engin, Sinan Alis, Korhan Yelkenci, Aysegul T. Yelkenci, Ferhat F. Ozeren, Senem Cabuk, Erkan Ataman, Tuba Akkus, Efe Tuncel, Fehmi Bucakhan, Sevda Taskin, Fahri Ozturk, Timur Sahin, Nesever Baltaci, Saniye Baspinar, Pinar Uzunyayla, Nermin Deniz Konak, Ozgur Etli, Figen Yilmaz, Orhan Donmez, Selcuk Topal, Selami Kalkan, Eda Sonbas, Aybuke Kupcu Yoldas Journey of Turkish Membership to ESO - Turkiye'nin ESO'ya uyelik yolculugu 18th Turkish National Astronomy Congress, Malatya, Turkey, Aug 27-31, 2012 - Invited Talk
17. Umut A. Yildiz, Ibrahim Kucuk, Fahri Ozturk, Selcuk Topal, Ahmed Akgiray, Elif Beklen, Gulay Gurkan-uygun, Oktay Unal, Tulun Ergin; Turkish National Radiotelescope Project - Ulusal Radyoteleskop Projesi 18th Turkish National Astronomy Congress, Malatya, Turkey, Aug 27-31, 2012 - Invited Talk
16. I. San-Jose Garcia, J.C. Mottram, L.E. Kristensen, E. F. van Dishoeck, U. A. Yildiz and the WISH team; Studying the star-formation across the mass spectrum with Herschel-HIFI observations of CO Galactic Scale Star Formation, Heidelberg, Jul 30 - Aug 3, 2012 - Oral Presentation
15. I. San-Jose Garcia, J.C. Mottram, L.E. Kristensen, E. F. van Dishoeck, U. A. Yildiz and the WISH team; Studying the star-formation across the mass spectrum with Herschel-HIFI observations of CO, European Week of Astronomy and Space Science (EWASS), Symposium 2, Rome, Jul 6, 2012 - Oral Presentation
14. Michiel R. Hogerheijde, Edwin A. Bergin, Christian Brinch, L. Ilsedore Cleeves, Jeffrey K. J. Fogel, Geoffrey A. Blake, Carsten Dominik, Dariusz C. Lis, Gary Melnick, David Neufeld, Olja Panic, John C. Pearson, Lars Kristensen, Umut A. Yildiz, Ewine F. van Dishoeck; Cold water and ammonia vapor in protoplanetary disks ; European Week of Astronomy and Space Science (EWASS), Symposium 2, Rome, Jul 6, 2012 - Oral Presentation
13. Yildiz, U. A.; van Dishoeck, E. F.; Kristensen, L. E.; Ramchandani, J.; San Jose-Garcia, I.; Mottram, J. C.; Joergensen, J.K.; and the WISH Team; High-J CO survey of low-mass protostars observed with Herschel-HIFI and LOMASS database ; From atoms to pebbles, Herschel's view of Star and Planet Formation Symposium held in Grenoble, France, March 20-23, 2012 - Poster Presentation
12. Kristensen, L.E.; van Dishoeck, E.F.; Visser, R.; Mottram, J.C.; Herczeg, G.J.; Joergensen, J.K.; Bruderer, S.; Harsono, D.; Hogerheijde,M.R.; Karska, A.; San Jose-Garcia, I.; Wampfler, S.; Yildiz, U.A.; and the WISH team; Feedback from low-mass protostars onto their surroundings: some like it hot ; From atoms to pebbles, Herschel's view of Star and Planet Formation Symposium held in Grenoble, France, March 20-23, 2012 - Oral Presentation
11. Michiel R. Hogerheijde, Edwin A. Bergin, Christian Brinch, L. Ilsedore Cleeves, Jeffrey K. J. Fogel, Geoffrey A. Blake, Carsten Dominik, DariuszC.Lis, Gary Melnick, David Neufeld, Olja Panic, John C. Pearson, Lars Kristensen, Umut A. Yildiz, Ewine F. van Dishoeck; Herschel observations of cold water vapor and ammonia in protoplanetary disks ; From atoms to pebbles, Herschel’s view of Star and Planet Formation Symposium held in Grenoble, France, March 20-23, 2012 - Oral Presentation
10. Michiel R. Hogerheijde, Edwin A. Bergin, Christian Brinch, L. Ilsedore Cleeves, Jeffrey K. J. Fogel, Geoffrey A. Blake, Carsten Dominik, Dariusz C. Lis, Gary Melnick, David Neufeld, Olja Panic, John C. Pearson, Lars Kristensen, Umut A. Yildiz, Ewine F. van Dishoeck; Detecting cold water vapor in a planet-forming disk ; Star Formation through Spectroimaging at High Angular Resolution Workshop, Taipei, Taiwan, June 20-24, 2011 - Oral Presentation
9. Yildiz, U. A.; Kristensen, L. E.; van Dishoeck, E. F.; Jorgensen, J. K.; Visser, R.; San Jose-Garcia, I.; Herschel WISH Team; High-J CO survey of low-mass protostars observed with Herschel-HIFI ; The Molecular Universe, Proceedings of the 280th Symposium of the International Astronomical Union held in Toledo, Spain, May 30-June 3, 2011, #388 - Poster Presentation
8. San Jose-Garcia, I.; Kristensen, L. E.; Yildiz, U. A.; van Dishoeck, E. F.; Herschel WISH Team; Linking high-J CO emission from low- to high-mass protostars with Herschel-HIFI ; The Molecular Universe, Proceedings of the 280th Symposium of the International Astronomical Union held in Toledo, Spain, May 30-June 3, 2011, #362 - Poster Presentation
7. Herczeg, G. J.; Karska, A.; Kristensen, L. E.; van Dishoeck, E. F.; Visser, R.; Jorgensen, J.; Bruderer, S.; Yildiz, U.; Herschel Wish Team Warm water in Herschel/PACS observations of NGC 1333 IRAS 4B: the outflow, not the disk! The Molecular Universe, Proceedings of the 280th Symposium of the International Astronomical Union held in Toledo, Spain, May 30-June 3, 2011, #195 - Poster Presentation
6. Hogerheijde, M.; Bergin, E. A.; Brinch, C.; Cleeves, L.; Fogel, J.; Blake, G.; Cernicharo, J.; Dominik, C.; Lis, D. C.; Melnick, G.; Neufeld, D.; Panic, O.; Pearson, J.; Kristensen, L.; Yildiz, U.; van Dishoeck, E.; Detecting the cold water reservoir in a protoplanetary disk; The Molecular Universe, Proceedings of the 280th Symposium of the International Astronomical Union held in Toledo, Spain, May 30-June 3, 2011, #16 - Oral Presentation
5. Kristensen, L. E.; van Dishoeck, E.; Yildiz, U.; Visser, R.; Herczeg, G.; Jorgensen, J.; van Kempen, T.; Hogerheijde, M.; WISH Team; WISHes coming true: low-mass protostars as chemical fountains - Oral Presentation; The Molecular Universe, Proceedings of the 280th Symposium of the International Astronomical Union held in Toledo, Spain, May 30-June 3, 2011, #10
4. Umut A. Yildiz, Ewine F. van Dishoeck, Lars E. Kristensen, Ruud Visser, Greg Herczeg, Tim A. van Kempen, Jes K. Jorgensen, Michiel R. Hogerheijde (and the WISH Team); Energetic processes revealed by spectrally resolved high-J CO lines in low-mass star-forming regions with Herschel-HIFI - Poster Presentation; Astro-ph: 1102.0205, 5th Zermatt ISM Symposium "Conditions and impact of star formation: New results with Herschel and beyond", September 19-24, 2010
3. L.E. Kristensen, R. Visser, E.F. van Dishoeck, U.A. Yildiz, G.J. Herczeg , S. Doty, J.K. Jorgensen, T.A. van Kempen, C. Brinch, S. Wampfler, S. Bruderer, A.O. Benz, and the WISH team; Wishes coming true: Water in low-mass star-forming regions with Herschel; 5th Zermatt ISM Symposium "Conditions and impact of star formation: New results with Herschel and beyond", September 19-24, 2010 - Oral Presentation
2. S.F. Wampfler, G.J. Herczeg, S. Bruderer, A.O. Benz, E.F. van Dishoeck, L.E. Kristensen, T.A. van Kempen, S.D. Doty, R. Visser, U.A. Yildiz, and the WISH Team; Probing the Water Chemistry in Young Stellar Objects with Hydroxyl Observations; 5th Zermatt ISM Symposium "Conditions and impact of star formation: New results with Herschel and beyond", September 19-24, 2010 - Poster Presentation
1. U. Yildiz, E. F. van Dishoeck, L. Kristensen, T. van Kempen, A. Belloche, R. Guesten; The shocking truth about star formation as revealed by warm CO CHAMP+ Mapping 64thNederlandse Astronomen Conferentie (NAC) held in Rolduc, Kerkrade, May 13-15, 2009 - Poster Presentation

Top

PhD Thesis

Warm and Cold Gas in Low-Mass Protostars: Herschel Space Observatory and Ground-Based Surveys

Master's Thesis

Optical and near-infrared surface photometry of quiescent dwarf galaxies

Press Release: O2Discovery

Observations of a newly forming star have revealed strangely low levels of molecular oxygen, the kind we breathe, in the emerging star's gassy, dusty environment...