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The VLA/ALMA Nascen...
The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. II. A Statistical Characterization of Class 0 and Class i Protostellar Disks
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- Tobin, John J. (author)
- National Radio Astronomy Observatory
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- Sheehan, Patrick D. (author)
- National Radio Astronomy Observatory
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- Megeath, S. Thomas (author)
- University of Toledo
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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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- Offner, S. (author)
- The University of Texas at Austin, USA
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- Murillo, N. M. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Van 'T Hoff, Merel L.R. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Van Dishoeck, Ewine F. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Osorio, Mayra (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Anglada, G. (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Furlan, Elise (author)
- California Institute of Technology (Caltech)
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- Stutz, Amelia M. (author)
- Universidad de Concepción,University of Concepcion
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- Reynolds, Nickalas (author)
- The University of Oklahoma
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- Karnath, Nicole (author)
- University of Toledo
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- Fischer, William J. (author)
- Space Telescope Science Institute (STScI)
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- Persson, Magnus V., 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Looney, L. W. (author)
- University of Illinois
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- Li, Z. Y. (author)
- University of Virginia
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- Stephens, Ian (author)
- Harvard-Smithsonian Center for Astrophysics
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- Chandler, C. J. (author)
- National Radio Astronomy Observatory Socorro
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- Cox, Erin (author)
- Northwestern University
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- Dunham, Michael M. (author)
- State University of New York Fredonia,Harvard-Smithsonian Center for Astrophysics
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- Tychoniec, Łukasz (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Kama, M. (author)
- University Of Cambridge
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- Kratter, K. M. (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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- Maud, Luke T. (author)
- European Southern Observatory (ESO),Universiteit Leiden (UL),Leiden University (UL)
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- Patel, Lisa (author)
- The University of Oklahoma
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- Perez, L. (author)
- Universidad de Chile (UCH),University of Chile (UCH)
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- Sadavoy, S. I. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Segura-Cox, D. (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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- Stephenson, Brian (author)
- The University of Oklahoma
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- Watson, Dan M. (author)
- University of Rochester
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- Wyrowski, F. (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)
- 2020-02-20
- 2020
- English.
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In: Astrophysical Journal. - : American Astronomical Society. - 1538-4357 .- 0004-637X. ; 890:2
- Related links:
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https://iopscience.i...
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https://doi.org/10.3...
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Abstract
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- We have conducted a survey of 328 protostars in the Orion molecular clouds with the Atacama Large Millimeter/submillimeter Array at 0.87 mm at a resolution of ∼0.″1 (40 au), including observations with the Very Large Array at 9 mm toward 148 protostars at a resolution of ∼0.″08 (32 au). This is the largest multiwavelength survey of protostars at this resolution by an order of magnitude. We use the dust continuum emission at 0.87 and 9 mm to measure the dust disk radii and masses toward the Class 0, Class I, and flat-spectrum protostars, characterizing the evolution of these disk properties in the protostellar phase. The mean dust disk radii for the Class 0, Class I, and flat-spectrum protostars are 44.9-3.4+5.8, 37.0-3.0+4.9, and 28.5-2.3+3.7 au, respectively, and the mean protostellar dust disk masses are 25.9-4.0+7.7, 14.9-2.2+3.8, 11.6-1.9+3.5 M⊙, respectively. The decrease in dust disk masses is expected from disk evolution and accretion, but the decrease in disk radii may point to the initial conditions of star formation not leading to the systematic growth of disk radii or that radial drift is keeping the dust disk sizes small. At least 146 protostellar disks (35% of 379 detected 0.87 mm continuum sources plus 42 nondetections) have disk radii greater than 50 au in our sample. These properties are not found to vary significantly between different regions within Orion. The protostellar dust disk mass distributions are systematically larger than those of Class II disks by a factor of >4, providing evidence that the cores of giant planets may need to at least begin their formation during the protostellar phase.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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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Sheehan, Patrick ...
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Megeath, S. Thom ...
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Diaz-Rodriguez, ...
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Offner, S.
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Murillo, N. M.
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show more...
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Van 'T Hoff, Mer ...
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Van Dishoeck, Ew ...
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Osorio, Mayra
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Anglada, G.
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Furlan, Elise
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Stutz, Amelia M.
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Reynolds, Nickal ...
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Karnath, Nicole
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Fischer, William ...
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Persson, Magnus ...
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Looney, L. W.
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Li, Z. Y.
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Stephens, Ian
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Chandler, C. J.
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Cox, Erin
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Dunham, Michael ...
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Tychoniec, Łukas ...
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Kama, M.
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Kratter, K. M.
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Kounkel, Marina
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Mazur, Brian
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Maud, Luke T.
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Patel, Lisa
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Perez, L.
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Sadavoy, S. I.
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Segura-Cox, D.
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Sharma, Rajeeb
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Stephenson, Bria ...
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Watson, Dan M.
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Wyrowski, F.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astrophysical Jo ...
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Chalmers University of Technology