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  • Tobin, John J.National Radio Astronomy Observatory (author)

The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. II. A Statistical Characterization of Class 0 and Class i Protostellar Disks

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020-02-20
  • American Astronomical Society,2020

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:134e5fd9-2dc0-42cd-be7c-148c066c1255
  • https://doi.org/10.3847/1538-4357/ab6f64DOI
  • https://research.chalmers.se/publication/516131URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • 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.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Sheehan, Patrick D.National Radio Astronomy Observatory (author)
  • Megeath, S. ThomasUniversity of Toledo (author)
  • Diaz-Rodriguez, Ana KarlaInstituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Offner, S.The University of Texas at Austin, USA (author)
  • Murillo, N. M.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Van 'T Hoff, Merel L.R.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Van Dishoeck, Ewine F.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Osorio, MayraInstituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Anglada, G.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Furlan, EliseCalifornia Institute of Technology (Caltech) (author)
  • Stutz, Amelia M.Universidad de Concepción,University of Concepcion (author)
  • Reynolds, NickalasThe University of Oklahoma (author)
  • Karnath, NicoleUniversity of Toledo (author)
  • Fischer, William J.Space Telescope Science Institute (STScI) (author)
  • Persson, Magnus V.,1983Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)magnpe (author)
  • Looney, L. W.University of Illinois (author)
  • Li, Z. Y.University of Virginia (author)
  • Stephens, IanHarvard-Smithsonian Center for Astrophysics (author)
  • Chandler, C. J.National Radio Astronomy Observatory Socorro (author)
  • Cox, ErinNorthwestern University (author)
  • Dunham, Michael M.State University of New York Fredonia,Harvard-Smithsonian Center for Astrophysics (author)
  • Tychoniec, ŁukaszUniversiteit Leiden (UL),Leiden University (UL) (author)
  • Kama, M.University Of Cambridge (author)
  • Kratter, K. M.University of Arizona (author)
  • Kounkel, MarinaWestern Washington University (author)
  • Mazur, BrianUniversity of Toledo (author)
  • Maud, Luke T.European Southern Observatory (ESO),Universiteit Leiden (UL),Leiden University (UL) (author)
  • Patel, LisaThe University of Oklahoma (author)
  • Perez, L.Universidad de Chile (UCH),University of Chile (UCH) (author)
  • Sadavoy, S. I.Harvard-Smithsonian Center for Astrophysics (author)
  • Segura-Cox, D.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Sharma, RajeebThe University of Oklahoma (author)
  • Stephenson, BrianThe University of Oklahoma (author)
  • Watson, Dan M.University of Rochester (author)
  • Wyrowski, F.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • National Radio Astronomy ObservatoryUniversity of Toledo (creator_code:org_t)

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  • In:Astrophysical Journal: American Astronomical Society890:21538-43570004-637X

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