Results 91 to 100 of about 13,657 (239)

Discovery of a Collimated Jet from the Low-luminosity Protostar IRAS 16253−2429 in a Quiescent Accretion Phase with the JWST

The Astrophysical Journal Letters
Investigating Protostellar Accretion (IPA) is a JWST Cycle 1 GO program that uses NIRSpec integral field units and MIRI Medium Resolution Spectrograph to obtain 2.9–28 μ m spectral cubes of young, deeply embedded protostars with luminosities of 0.2–10 ...
Mayank Narang, P. Manoj, Himanshu Tyagi, Dan M. Watson, S. Thomas Megeath, Samuel Federman, Adam E. Rubinstein, Robert Gutermuth, Alessio Caratti o Garatti, Henrik Beuther, Tyler L. Bourke, Ewine F. Van Dishoeck, Neal J. Evans II, Guillem Anglada, Mayra Osorio, Thomas Stanke, James Muzerolle, Leslie W. Looney, Yao-Lun Yang, Pamela Klaassen, Nicole Karnath, Prabhani Atnagulov, Nashanty Brunken, William J. Fischer, Elise Furlan, Joel Green, Nolan Habel, Lee Hartmann, Hendrik Linz, Pooneh Nazari, Riwaj Pokhrel, Rohan Rahatgaonkar, Will R. M. Rocha, Patrick Sheehan, Katerina Slavicinska, Amelia M. Stutz, John J. Tobin, Lukasz Tychoniec, Scott Wolk   +38 more
doaj   +1 more source

Evolution of the Solar Nebula. IX. Gradients in the Spatial Heterogeneity of the Short-Lived Radioisotopes $^{60}$Fe and $^{26}$Al and the Stable Oxygen Isotopes

, 2011
Short-lived radioisotopes (SLRI) such as $^{60}$Fe and $^{26}$Al were likely injected into the solar nebula in a spatially and temporally heterogeneous manner.
Alan P. Boss, Andrews, Boss, Boss, Boss, Boss, Boss, Boss, Boss, Boss, Bouwman, Ciesla, Dauphas, Dauphas, Foster, Heinzeller, Hughes, Hughes, Isella, Kitamura, Leya, Limongi, MacPherson, Merín, Miller, Mostefaoui, Moynier, Sahijpal, Sargent, Sargent, Simon, Speck, Tachibana, Thrane, Watson, Westphal, Yamakawa, Yamashita, Zhu   +38 more
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ROSAT-HRI detection of the Class I protostar YLW16A in the rho Ophiuchi dark cloud

, 2001
I analyze unpublished or partially published archival ROSAT data of the rho Ophiuchi dark cloud. This set of seven overlapping ROSAT HRI pointings, composed of eight ~one-hour exposures, detects mainly the X-ray brightest T Tauri stars of this star ...
Grosso, Nicolas
core   +1 more source

Chemical Evolution of Protostars [PDF]

Astrophysics and Space Science, 2005
This review discusses the evolution of the chemical composition of the molecular gas throughout the process of star formation. It covers the initial stages of cloud-core formation, gravitational collapse and the formation of the star, the effects of stellar radiation and outflows on the surrounding cloud, and the composition of the circumstellar disk ...
openaire   +1 more source

Triggering Collapse of the Presolar Dense Cloud Core and Injecting Short-Lived Radioisotopes with a Shock Wave. I. Varied Shock Speeds

, 2009
The discovery of decay products of a short-lived radioisotope (SLRI) in the Allende meteorite led to the hypothesis that a supernova shock wave transported freshly synthesized SLRI to the presolar dense cloud core, triggered its self-gravitational ...
Alan P. Boss, Barsony, Bonnor, Boss, Boss, Cameron, Cameron, Cameron, Chevalier, Connelly, Crutcher, Dauphas, Desch, Elizabeth A. Myhill, Ellinger, Foster, Frank, Gaidos, Goswami, Gounelle, Gounelle, Gounelle, Harri A. T. Vanhala, Healey, Hester, Krot, Kudoh, Kunz, Lee, Lee, Leppanen, Looney, MacPherson, Marchenko, McKeegan, McKeegan, Morris, Mouschovias, Nakamura, Nittler, Oey, Ouellette, Patnaude, Poludnenko, Preibisch, Preibisch, Rauscher, Regelous, Sahijpal, Sahijpal, Sandell, Sandra A. Keiser, Sergei I. Ipatov, Shirley, Snider, Stone, Tachibana, Takigawa, Thrane, Trigo-Rodríguez, Truelove, Vanhala, Vanhala, Vanhala, Wadhwa, Wasserburg, Whalen, Williams, Williams, Yokogawa   +69 more
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Luminosity Functions of Spitzer Identified Protostars in Nine Nearby Molecular Clouds

, 2012
We identify protostars in Spitzer surveys of nine star-forming molecular clouds within 1 kpc: Serpens, Perseus, Ophiuchus, Chamaeleon, Lupus, Taurus, Orion, Cep OB3, and Mon R2, which combined host over 700 protostar candidates.
Allen, Allen, Brooke, Cohen, Cunningham, Dunham, Dunham, Dzib, E. Kryukova, Elmegreen, Enoch, Evans, Evans, Fazio, Flaherty, Furlan, Gutermuth, Gutermuth, Gutermuth, Gutermuth, Gutermuth, Hartmann, Hartmann, Harvey, Harvey, Hunter, J. Muzerolle, J. Pipher, Jijina, Kirk, L. E. Allen, Lada, Landsman, Luhman, Luhman, McClure, McKee, Megeath, Megeath, Megeath, Muzerolle, Myers, Myers, Offner, P. C. Myers, R. A. Gutermuth, Reid, Rieke, Robitaille, Román-Zúñiga, S. T. Megeath, Sadavoy, Swift, T. S. Allen, Testi, Vorobyov, Whitney, Whitney, Whitney, Wilson, Winston, Young   +61 more
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The Outflow of The Protostar in B335. I.

The Astronomical Journal
The isolated globule B335 contains a single, low-luminosity Class 0 protostar associated with a bipolar nebula and outflow system seen nearly perpendicular to its axis.
Klaus W. Hodapp, Laurie L. Chu, Thomas Greene, Michael R. Meyer, Doug Johnstone, Marcia J. Rieke, John Stansberry, Martha Boyer, Charles Beichman, Scott Horner, Tom Roellig, George Rieke, Eric T. Young   +12 more
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Detection of OD towards the low-mass protostar IRAS16293-2422

, 2012
Although water is an essential and widespread molecule in star-forming regions, its chemical formation pathways are still not very well constrained. Observing the level of deuterium fractionation of OH, a radical involved in the water chemical network ...
Belloche, A., Du, F., Güsten, R., Hübers, H. W., Klein, B., Liu, F. -C., Menten, K. M., Parise, B., Wiesemeyer, H.   +8 more
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LZ-STAR Survey: Low-metallicity Star Formation Survey of Sh2-284. I. Ordered Massive Star Formation in the Outer Galaxy

The Astrophysical Journal
Star formation is a fundamental, yet poorly understood, process of the Universe. It is important to study how star formation occurs in different galactic environments.
Yu Cheng, Jonathan C. Tan, Morten Andersen, Rubén Fedriani, Yichen Zhang, Massimo Robberto, Zhi-Yun Li, Kei E. I. Tanaka   +7 more
doaj   +1 more source

Disk Structure around the Class I Protostar L1489 IRS Revealed by ALMA: A Warped-disk System [PDF]

, 2020
Jinshi Sai, Nagayoshi Ohashi, Kazuya Saigo, Tomoaki Matsumoto, Yusuke Aso, Shigehisa Takakuwa, Yuri Aikawa, Ippei Kurose, Hsi-Wei Yen, Kohji Tomisaka, Kengo Tomida, Masahiro N. Machida   +11 more
openalex   +1 more source