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The VLA/ALMA Nascen...
The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. I. Identifying and Characterizing the Protostellar Content of the OMC-2 FIR4 and OMC-2 FIR3 Regions
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- Tobin, John J. (author)
- National Radio Astronomy Observatory
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- Megeath, S. Thomas (author)
- University of Toledo
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- van't Hoff, Merel (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Diaz-Rodriguez, Ana Karla (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Reynolds, Nickalas (author)
- The University of Oklahoma
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- Osorio, Mayra (author)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Anglada, Guillem (author)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Furlan, Elise (author)
- California Institute of Technology (Caltech)
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- Karnath, Nicole (author)
- University of Toledo
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- Offner, Stella S. R. (author)
- The University of Texas at Austin, USA
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- Sheehan, Patrick D. (author)
- National Radio Astronomy Observatory
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- Sadavoy, Sarah I. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Stutz, Amelia M. (author)
- Universidad de Concepción,University of Concepcion,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Fischer, William J. (author)
- Space Telescope Science Institute (STScI)
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- Kama, Mihkel (author)
- University Of Cambridge
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- Persson, Magnus V., 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Di Francesco, James (author)
- National Research Council Canada
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- Looney, Leslie W. (author)
- University of Illinois
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- Watson, Dan M. (author)
- University of Rochester
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- Li, Zhi-Yun (author)
- University of Virginia
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- Stephens, Ian (author)
- Harvard-Smithsonian Center for Astrophysics
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- Chandler, Claire J. (author)
- National Radio Astronomy Observatory
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- Cox, Erin (author)
- Northwestern University
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- Dunham, Michael M. (author)
- Harvard-Smithsonian Center for Astrophysics,State University of New York Fredonia
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- Kratter, Kaitlin (author)
- University of Arizona
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- Kounkel, Marina (author)
- Western Washington University
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- Mazur, Brian (author)
- University of Toledo
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- Murillo, Nadia M. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Patel, Lisa (author)
- The University of Oklahoma
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- Perez, Laura (author)
- Universidad de Chile (UCH),University of Chile (UCH)
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- Segura-Cox, Dominique (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Sharma, Rajeeb (author)
- The University of Oklahoma
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- Tychoniec, Lukasz (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Wyrowski, Friedrich (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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(creator_code:org_t)
- 2019-11-13
- 2019
- English.
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In: Astrophysical Journal. - : American Astronomical Society. - 1538-4357 .- 0004-637X. ; 886:1
- Related links:
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https://iopscience.i...
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https://research.cha...
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https://research.cha...
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https://doi.org/10.3...
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Abstract
Subject headings
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- We present Atacama Large Millimeter/submillimeter Array (0.87 mm) and Very Large Array (9 mm) observations toward OMC-2 FIR4 and OMC-2 FIR3 within the Orion integral-shaped filament, thought to be two of the nearest regions of intermediate-mass star formation. We characterize the continuum sources within these regions on ?40 au (01) scales and associated molecular line emission at a factor of ?30 better resolution than previous observations at similar wavelengths. We identify six compact continuum sources within OMC-2 FIR4, four in OMC-2 FIR3, and one additional source just outside OMC-2 FIR4. This continuum emission is tracing the inner envelope and/or disk emission on less than 100 au scales. HOPS-108 is the only protostar in OMC-2 FIR4 that exhibits emission from high-excitation transitions of complex organic molecules (e.g., methanol and other lines) coincident with the continuum emission. HOPS-370 in OMC-2 FIR3, with L;?;360 L, also exhibits emission from high-excitation methanol and other lines. The methanol emission toward these two protostars is indicative of temperatures high enough to thermally evaporate it from icy dust grains; overall, these protostars have characteristics similar to hot corinos. We do not identify a clear outflow from HOPS-108 in (CO)-C-12, but we find evidence of interaction between the outflow/jet from HOPS-370 and the OMC-2 FIR4 region. A multitude of observational constraints indicate that HOPS-108 is likely a low- to intermediate-mass protostar in its main mass accretion phase and is the most luminous protostar in OMC-2 FIR4. The high-resolution data presented here are essential for disentangling the embedded protostars from their surrounding dusty environments and characterizing them.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- Star-forming regions
- Radio interferometry
- Interstellar medium
- Young stellar objects
- Protostars
- Star formation
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Tobin, John J.
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Megeath, S. Thom ...
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van't Hoff, Mere ...
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Diaz-Rodriguez, ...
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Reynolds, Nickal ...
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Osorio, Mayra
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Anglada, Guillem
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Furlan, Elise
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Karnath, Nicole
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Offner, Stella S ...
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Sheehan, Patrick ...
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Sadavoy, Sarah I ...
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Stutz, Amelia M.
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Fischer, William ...
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Kama, Mihkel
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Persson, Magnus ...
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Di Francesco, Ja ...
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Looney, Leslie W ...
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Watson, Dan M.
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Li, Zhi-Yun
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Stephens, Ian
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Chandler, Claire ...
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Cox, Erin
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Dunham, Michael ...
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Kratter, Kaitlin
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Kounkel, Marina
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Mazur, Brian
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Murillo, Nadia M ...
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Patel, Lisa
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Perez, Laura
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Segura-Cox, Domi ...
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Sharma, Rajeeb
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Tychoniec, Lukas ...
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Wyrowski, Friedr ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Astrophysical Jo ...
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Chalmers University of Technology