Disk and envelope structure in class 0 protostars. II. High-resolution millimeter mapping of the Serpens sample

Melissa L. Enoch, Stuartt Corder, Gaspard Duchêne, Douglas C. Bock, Alberto D. Bolatto, Thomas L. Culverhouse, Woojin Kwon, James W. Lamb, Erik M. Leitch, Daniel P Marrone, Stephen J. Muchovej, Laura M. Pérez, Stephen L. Scott, Peter J. Teuben, Melvyn C H Wright, B. Ashley Zauderer

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

We present high-resolution CARMA 230GHz continuum imaging of nine deeply embedded protostars in the Serpens Molecular Cloud, including six of the nine known Class 0 protostars in Serpens. This work is part of a program to characterize disk and envelope properties for a complete sample of Class 0 protostars in nearby low-mass star-forming regions. Here, we present CARMA maps and visibility amplitudes as a function of uv-distance for the Serpens sample. Observations are made in the B, C, D, and E antenna configurations, with B configuration observations utilizing the CARMA Paired Antenna Calibration System. Combining data from multiple configurations provides excellent uv-coverage (4-500kλ), allowing us to trace spatial scales from 10 2 to 104AU. We find evidence for compact disk components in all of the observed Class 0 protostars, suggesting that disks form at very early times (t < 0.2Myr) in Serpens. We make a first estimate of disk masses using the flux at 50kλ, where the contribution from the envelope should be negligible, assuming an unresolved disk. The resulting disk masses range from 0.04 M to 1.7 M, with a mean of approximately 0.2 M. Our high-resolution maps are also sensitive to binary or multiple sources with separations ≳ 250AU, but significant evidence of multiplicity on scales <2000AU is seen in only one source.

Original languageEnglish (US)
Article number21
JournalAstrophysical Journal, Supplement Series
Volume195
Issue number2
DOIs
Publication statusPublished - Aug 2011
Externally publishedYes

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Keywords

  • ISM: individual objects (Serpens)
  • stars: formation
  • submillimeter: ISM
  • techniques: interferometric

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Enoch, M. L., Corder, S., Duchêne, G., Bock, D. C., Bolatto, A. D., Culverhouse, T. L., ... Zauderer, B. A. (2011). Disk and envelope structure in class 0 protostars. II. High-resolution millimeter mapping of the Serpens sample. Astrophysical Journal, Supplement Series, 195(2), [21]. https://doi.org/10.1088/0067-0049/195/2/21