Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Steven D. Doty"'
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
S. F. Wampfler, Antoine Gusdorf, Neal J. Evans, Edwin Bergin, Per Bjerkeli, Doug Johnstone, Daniel Harsono, Joseph C. Mottram, Lars E. Kristensen, Sylvie Cabrit, Sébastien Maret, Jeong-Eun Lee, Jes K. Jørgensen, T. A. van Kempen, Steven D. Doty, Gregory J. Herczeg, Umut A. Yildiz, E. F. van Dishoeck, M. Tafalla, Ruud Visser, Agata Karska
Publikováno v:
NASA Astrophysics Data System
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2017, 605, pp.A93. ⟨10.1051/0004-6361/201630127⟩
Astronomy & Astrophysics (0004-6361)
Astronomy & Astrophysics (0004-6361), 605, A93
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2017, 605, pp.A93. ⟨10.1051/0004-6361/201630127⟩
Astronomy & Astrophysics (0004-6361)
Astronomy & Astrophysics (0004-6361), 605, A93
(Abridged) Through spectrally unresolved observations of high-J CO transitions, Herschel-PACS has revealed large reservoirs of warm (300 K) and hot (700 K) molecular gas around low-mass protostars. We aim to shed light on the excitation and origin of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a07523cfc3006367023b2db1c20570e
Publikováno v:
International Journal of Astronomy and Astrophysics. :519-529
We present a study of the pre-protostellar core (PPC) L1498. A series of self-consistent, three-dimensional continuum radiative transfer models are constructed. The outputs of these models are convolved with appropriate telescope beam responses, incl
Publikováno v:
International Journal of Astronomy and Astrophysics. :479-490
We consider models for the observed ro-vibrational absorption lines of acetylene toward NGC 7538 IRS9. The data are fit with multiple screens, each having separate column densities, rotational and vibrational excitation temperatures, and filling fact
Publikováno v:
Proceedings of the International Astronomical Union. 7:138-148
The chemical composition of a protoplanetary disk is determined not only by in situ chemical processes during the disk phase, but also by the history of the gas and dust before it accreted from the natal envelope. In order to understand the disk's ch
Autor:
S. F. Wampfler, Steven D. Doty, Arnold O. Benz, E. F. van Dishoeck, Christian Brinch, Gregory J. Herczeg, Jes K. Jørgensen, Ruud Visser, Umut A. Yildiz, Lars E. Kristensen, Simon Bruderer, T. A. van Kempen
Publikováno v:
EAS Publications Series. 52:177-180
Water is a key molecule for tracing physical and chemical processes in star-forming regions. The key program “Water in star-forming regions with Herschel ” is observing several water transitions towards low-mass protostars with HIFI. Results rega
Publikováno v:
The Astrophysical Journal. 720:1432-1453
The Herschel Space Observatory enables observations in the far-infrared at high spectral and spatial resolution. A particular class of molecules will be directly observable: light diatomic hydrides and their ions (CH, OH, SH, NH, CH + ,O H + ,S H + ,
Publikováno v:
Astronomy & Astrophysics. 503:L13-L16
Context. Outflow cavities in envelopes of young stellar objects (YSOs) have been pr edicted to allow far-UV (FUV) photons to escape far from the central source, with significant observable e ffects, especially if the protostar is a forming high-mass
Publikováno v:
The Astrophysical Journal. 700:872-886
Observations of the high-mass star forming region AFGL 2591 reveal a large abundance of CO+, a molecule known to be enhanced by far UV (FUV) and X-ray irradiation. In chemical models assuming a spherically symmetric envelope, the volume of gas irradi
Autor:
E. F. van Dishoeck, Michiel R. Hogerheijde, T. A. van Kempen, Steven D. Doty, J. K. Joergensen
Publikováno v:
Astronomy & Astrophysics. 487:975-991
Within low-mass star formation, water vapor plays a key role in the chemistry and energy balance of the circumstellar material. The Herschel Space Observatory will open up the possibility to observe water lines originating from a wide range of excita