Results 91 to 100 of about 615 (185)

IPA: Class 0 Protostars Viewed in CO Emission Using JWST

The Astrophysical Journal
We investigate the bright CO fundamental emission in the central regions of five protostars in their primary mass assembly phase using new observations from JWST’s Near-Infrared Spectrograph and Mid-Infrared Instrument. CO line emission images and fluxes
Adam E. Rubinstein, Neal J. Evans II, Himanshu Tyagi, Mayank Narang, Pooneh Nazari, Robert Gutermuth, Samuel Federman, P. Manoj, Joel D. Green, Dan M. Watson, S. Thomas Megeath, Will R. M. Rocha, Nashanty G. C. Brunken, Katerina Slavicinska, Ewine F. van Dishoeck, Henrik Beuther, Tyler L. Bourke, Alessio Caratti o Garatti, Lee Hartmann, Pamela Klaassen, Hendrik Linz, Leslie W. Looney, James Muzerolle, Thomas Stanke, John J. Tobin, Scott J. Wolk, Yao-Lun Yang   +26 more
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First Detection of CH3OD in Prestellar Cores

The Astrophysical Journal
The isotopic ratios of deuterated methanol derived around protostars are commonly used to infer the physical conditions under which they formed in the earlier prestellar stage.
Beatrice M. Kulterer, Asunción Fuente, Maria N. Drozdovskaya, Silvia Spezzano, Gisela Esplugues, David Navarro-Almaida, Marina Rodríguez Baras, Angèle Taillard, Karin Öberg   +8 more
doaj   +1 more source

Effect of Magnetic Field on the Accretion Phase of Population III Star Formation

The Astrophysical Journal
We examine the impact of the magnetic field on Population III star formation by varying its strength. We perform simulations with magnetic field strengths ranging from 10 ^−20 G to 10 ^−4 G, in addition to a model without a magnetic field.
Masahiro N. Machida, Shingo Hirano, Shantanu Basu   +2 more
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A Comparison of Presolar Isotopic Signatures in Laboratory-Studied Primitive Solar System Materials and Comet 67P/Churyumov-Gerasimenko: New Insights from Light Elements, Halogens, and Noble Gases. [PDF]

Space Sci Rev, 2023
Hoppe P, Rubin M, Altwegg K.
europepmc   +1 more source

ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Molecular Jets and Episodic Accretion in Protostars

The Astronomical Journal
Protostellar outflows and jets are almost ubiquitous characteristics during the mass accretion phase and encode the history of stellar accretion, complex organic molecule (COM) formation, and planet formation.
Somnath Dutta, Chin-Fei Lee, Doug Johnstone, Jeong-Eun Lee, Naomi Hirano, James Di Francesco, Anthony Moraghan, Tie Liu, Dipen Sahu, Sheng-Yuan Liu, Ken’ichi Tatematsu, Paul F. Goldsmith, Chang Won Lee, Shanghuo Li, David Eden, Mika Juvela, Leonardo Bronfman, Shih-Ying Hsu, Kee-Tae Kim, Woojin Kwon, Patricio Sanhueza, Xunchuan Liu, Jesús Alejandro López-Vázquez, Qiuyi Luo, Hee-Weon Yi   +24 more
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Identification of solid N2O in interstellar ices using open JWST data

Astronomy & Astrophysics
Context. Only six molecules containing an N-O bond are detected in the gaseous phase of the interstellar medium. One of them is nitrous oxide (N2O), which was unsuccessfully searched for in solid form since the launch of the Infrared Space Observatory ...
Karteyeva V., Nakibov R., Petrashkevich I., Medvedev M., Vasyunin A.   +4 more
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CORINOS. II. JWST-MIRI Detection of Warm Molecular Gas from an Embedded, Disk-bearing Protostar

The Astrophysical Journal
We present James Webb Space Telescope (JWST) Mid-InfraRed Instrument (MIRI) observations of warm CO and H _2 O gas in emission toward the low-mass protostar IRAS 15398-3359, observed as part of the CORINOS program.
Colette Salyk, Yao-Lun Yang, Klaus M. Pontoppidan, Jennifer B. Bergner, Yuki Okoda, Jaeyeong Kim, Neal J. Evans II, Ilsedore Cleeves, Ewine F. van Dishoeck, Robin T. Garrod, Joel D. Green   +10 more
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Outflows from the youngest stars are mostly molecular. [PDF]

Nature, 2023
Ray TP, McCaughrean MJ, Caratti O Garatti A, Kavanagh PJ, Justtanont K, van Dishoeck EF, Reitsma M, Beuther H, Francis L, Gieser C, Klaassen P, Perotti G, Tychoniec L, van Gelder M, Colina L, Greve TR, Güdel M, Henning T, Lagage PO, Östlin G, Vandenbussche B, Waelkens C, Wright G.   +22 more
europepmc   +1 more source

An Embedded Disk (eDisk) in the IceAge: Investigating the Jet and Outflow from Ced 110 IRS4

The Astronomical Journal
We present a comprehensive study of the large-scale structure, jet and outflow morphology, and kinematics of the Class 0/I protostellar binary Ced 110 IRS4, using JWST NIRCam (F150W and F410M) and MIRI MRS observations from the JWST ERC program IceAge ...
Mayank Narang, Nagayoshi Ohashi, John J. Tobin, M. K. McClure, Jes K. Jørgensen, Jinshi Sai (Insa Choi), eDisk + IceAge Team   +6 more
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The ALMA-QUARKS Survey: Investigating Thermal Feedback of Massive Protostars in Hot Molecular Cores

The Astrophysical Journal Supplement Series
We identify a sample of 83 spatially resolved hot molecular cores (HMCs) in the Querying Underlying mechanisms of massive star formation with ALMA-Resolved gas Kinematics and Structures (QUARKS) survey, aiming at investigating thermal feedback from ...
Dezhao Meng, Tie Liu, Jarken Esimbek, Yisheng Qiu, Jixing Ge, Neal J. Evans II, Aina Palau, Guido Garay, Paul F. Goldsmith, Fengwei Xu, Sami Dib, Jeong-Eun Lee, Amelia M. Stutz, Xindi Tang, Xiaofeng Mai, Yan-Kun Zhang, Wenyu Jiao, Jia-Hang Zou, Leonardo Bronfman, Swagat R. Das, Prasanta Gorai, Jian-Wen Zhou, Pablo García, L. Viktor Tóth, Sheng-Yuan Liu, Patricio Sanhueza, Chang Won Lee, Kee-Tae Kim, Jianjun Zhou, Gang Wu, Dalei Li, Yuxin He, Dongting Yang, James O. Chibueze, Xunchuan Liu, Lei Zhu   +35 more
doaj   +1 more source