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Circumstellar Disks around Binary Stars in Taurus

Akeson, R. L. and Jensen, E. L. N. (2014) Circumstellar Disks around Binary Stars in Taurus. Astrophysical Journal, 784 (1). Art. No. 62. ISSN 0004-637X. doi:10.1088/0004-637X/784/1/62.

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We have conducted a survey of 17 wide (>100 AU) young binary systems in Taurus with the Atacama Large Millimeter Array (ALMA) at two wavelengths. The observations were designed to measure the masses of circumstellar disks in these systems as an aid to understanding the role of multiplicity in star and planet formation. The ALMA observations had sufficient resolution to localize emission within the binary system. Disk emission was detected around all primaries and 10 secondaries, with disk masses as low as 10^(–4) M_☉. We compare the properties of our sample to the population of known disks in Taurus and find that the disks from this binary sample match the scaling between stellar mass and millimeter flux of F_(mm) ∝ M_*^(1.5-2.0) to within the scatter found in previous studies. We also compare the properties of the primaries to those of the secondaries and find that the secondary/primary stellar and disk mass ratios are not correlated; in three systems, the circumsecondary disk is more massive than the circumprimary disk, counter to some theoretical predictions.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper ErrataErratum
Akeson, R. L.0000-0001-9674-1564
Jensen, E. L. N.0000-0002-4625-7333
Additional Information:© 2014 American Astronomical Society. Received 2013 December 19; accepted 2014 February 16; published 2014 March 5. This paper makes use of the following ALMA data: ADS/JAO.ALMA#2011.0.00150.S. ALMA is a partnership of ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada) and NSC and ASIAA (Taiwan), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. We thank Scott Schnee at NRAO for extensive help in reducing the ALMA data and Sean Andrews, Adam Kraus, and Russel White for useful discussions. This paper makes use of the ASURV package, Rev 1.2 (Lavalley et al. 1992). Facility: ALMA
Group:Infrared Processing and Analysis Center (IPAC)
Subject Keywords:binaries: general; protoplanetary disks; stars: formation
Issue or Number:1
Record Number:CaltechAUTHORS:20140605-141902682
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Official Citation:Circumstellar Disks around Binary Stars in Taurus R. L. Akeson and E. L. N. Jensen 2014 ApJ 784 62
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46104
Deposited By: Ruth Sustaita
Deposited On:05 Jun 2014 21:38
Last Modified:10 Nov 2021 17:21

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