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The Gould's Belt Distances Survey (GOBELINS). IV. Distance, Depth, and Kinematics of the Taurus Star-forming Region

Galli, Phillip A. B. and Loinard, Laurent and Ortiz-León, Gisela N. and Kounkel, Marina and Dzib, Sergio A. and Mioduszewski, Amy J. and Rodríguez, Luis F. and Hartmann, Lee and Teixeira, Ramachrisna and Torres, Rosa M. and Rivera, Juana L. and Boden, Andrew F. and Evans, Neal J., II and Briceño, Cesar and Tobin, John J. and Heyer, Mark (2018) The Gould's Belt Distances Survey (GOBELINS). IV. Distance, Depth, and Kinematics of the Taurus Star-forming Region. Astrophysical Journal, 859 (1). Art. No. 33. ISSN 1538-4357.

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We present new trigonometric parallaxes and proper motions of young stellar objects in the Taurus molecular cloud complex from observations collected with the Very Long Baseline Array as part of the Gould's Belt Distances Survey. We detected 26 young stellar objects and derived trigonometric parallaxes for 18 stars with an accuracy of 0.3% to a few percent. We modeled the orbits of six binaries and determined the dynamical masses of the individual components in four of these systems (V1023 Tau, T Tau S, V807 Tau, and V1000 Tau). Our results are consistent with the first trigonometric parallaxes delivered by the Gaia satellite and reveal the existence of significant depth effects. We find that the central portion of the dark cloud Lynds 1495 is located at d =129.5 ± 0.3 pc, while the B216 clump in the filamentary structure connected to it is at d = 158.1 ± 1.2 pc. The closest and remotest stars in our sample are located at d = 126.6 ± 1.7 pc and d = 162.7 ± 0.8 pc, yielding a distance difference of about 36 pc. We also provide a new distance estimate for HL Tau that was recently imaged. Finally, we compute the spatial velocity of the stars with published radial velocity and investigate the kinematic properties of the various clouds and gas structures in this region.

Item Type:Article
Related URLs:
URLURL TypeDescription
Galli, Phillip A. B.0000-0003-2271-9297
Loinard, Laurent0000-0002-5635-3345
Ortiz-León, Gisela N.0000-0002-2863-676X
Kounkel, Marina0000-0002-5365-1267
Dzib, Sergio A.0000-0001-6010-6200
Hartmann, Lee0000-0003-1430-8519
Rivera, Juana L.0000-0002-7631-2620
Evans, Neal J., II0000-0001-5175-1777
Briceño, Cesar0000-0001-7124-4094
Tobin, John J.0000-0002-6195-0152
Additional Information:© 2018 The American Astronomical Society. Received 2018 February 9; revised 2018 March 29; accepted 2018 April 15; published 2018 May 21. P.A.B.G. acknowledges financial support from the São Paulo Research Foundation (FAPESP) through grants 2013/04934-8 and 2015/14696-2. L.L. acknowledges the financial support of DGAPA, UNAM (project IN112417), and CONACyT, Mexico. G.N.O.-L. acknowledges support from the Alexander von Humboldt Foundation in the form of a Humboldt Fellowship. M.K. acknowledges support provided by the NSF through grant AST-1449476 and from the Research Corporation via a Time Domain Astrophysics Scialog award (no. 24217). Facilities: VLBA (NRAO)—The National Radio Astronomy Observatory is operated by Associated Universities - , Inc. - , under cooperative agreement with the National Science Foundation. The Long Baseline Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities - , Inc. DiFX correlator—This work made use of the Swinburne University of Technology software correlator - , developed as part of the Australian Major National Research Facilities Programme and operated under licence. This work has made use of the computing facilities of the Laboratory of Astroinformatics (IAG/USP - , NAT/Unicsul) - , whose purchase was made possible by the Brazilian agency FAPESP (grant 2009/54006-4) and the INCT-A. - Software: AIPS (Greisen 2003), emcee (Foreman-Mackey et al. 2013), astropy (Astropy Collaboration et al. 2013), novas (Barron et al. 2011).
Funding AgencyGrant Number
Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)2013/04934-8
Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)2015/14696-2
Dirección General de Asuntos del Personal Académico (DGAPA)IN112417
Universidad Nacional Autónoma de México (UNAM)UNSPECIFIED
Consejo Nacional de Ciencia y Tecnología (CONACYT)UNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Research Corporation24217
Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)2009/54006-4
Subject Keywords:astrometry – binaries: visual – radiation mechanisms: non-thermal – stars: distances – stars: kinematics and dynamics – techniques: interferometric
Issue or Number:1
Record Number:CaltechAUTHORS:20180522-101454227
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Official Citation:Phillip A. B. Galli et al 2018 ApJ 859 33
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86543
Deposited By: Tony Diaz
Deposited On:22 May 2018 17:36
Last Modified:07 Nov 2019 00:10

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