Revolutionizing our View of Protostellar Multiplicity and Disks: The VLA Nascent Disk and Multiplicity (VANDAM) Survey of the Perseus Molecular Cloud

J. J. Tobin, L. W. Looney, Z. Y. Li, C. J. Chandler, M. M. Dunham, D. Segura-Cox, E. G. Cox, R. J. Harris, C. Melis, S. I. Sadavoy, L. Pérez, Kaitlin Kratter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

There is substantial evidence for disk formation taking place during the early stages of star formation and for most stars being born in multiple systems; however, protostellar multiplicity and disk searches have been hampered by low resolution, sample bias, and variable sensitivity. We have conducted an unbiased, high-sensitivity Karl G. Jansky Very Large Array (VLA) survey toward all known protostars (n = 94) in the Perseus molecular cloud (d ∼ 230 pc), with a resolution of ∼ 15 AU (0.06′′) at λ = 8 mm. We have detected candidate protostellar disks toward 17 sources (with 12 of those in the Class 0 stage) and we have found substructure on <50 AU scales for three Class 0 disk candidates, possibly evidence for disk fragmentation. We have discovered 16 new multiple systems (or new components) in this survey; the new systems have separations <500 AU and 3 by <30 AU. We also found a bi-modal distribution of separations, with peaks at ∼ 75 AU and ∼ 3000 AU, suggestive of formation through two distinct mechanisms: disk and turbulent fragmentation. The results from this survey demonstrate the necessity and utility of uniform, unbiased surveys of protostellar systems at millimeter and centimeter wavelengths.

Original languageEnglish (US)
Title of host publicationConditions and Impact of Star Formation 2015
PublisherEDP Sciences
Pages273-276
Number of pages4
Volume75-76
ISBN (Electronic)9782759820221
DOIs
Publication statusPublished - May 20 2016
Event6th Zermatt Symposium on Conditions and Impact of Star Formation: From Lab to Space 2015 - Zermatt, Switzerland
Duration: Sep 7 2015Sep 11 2015

Publication series

NameEAS Publications Series
Volume75-76
ISSN (Print)16334760
ISSN (Electronic)16381963

Other

Other6th Zermatt Symposium on Conditions and Impact of Star Formation: From Lab to Space 2015
CountrySwitzerland
CityZermatt
Period9/7/159/11/15

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Tobin, J. J., Looney, L. W., Li, Z. Y., Chandler, C. J., Dunham, M. M., Segura-Cox, D., ... Kratter, K. (2016). Revolutionizing our View of Protostellar Multiplicity and Disks: The VLA Nascent Disk and Multiplicity (VANDAM) Survey of the Perseus Molecular Cloud. In Conditions and Impact of Star Formation 2015 (Vol. 75-76, pp. 273-276). (EAS Publications Series; Vol. 75-76). EDP Sciences. https://doi.org/10.1051/eas/1575054