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

Author(s):Show less -

Galli, Phillip A. B. ^[1] ; Loinard, Laurent ^{[2, 3]} ; Ortiz-Leon, Gisela N. ^[4] ; Kounkel, Marina ^[5] ; Dzib, Sergio A. ^[4] ; Mioduszewski, Amy J. ^[6] ; Rodriguez, Luis F. ^[3] ; Hartmann, Lee ^[7] ; Teixeira, Ramachrisna ^[1] ; Torres, Rosa M. ^[8] ; Rivera, Juana L. ^[3] ; Boden, Andrew F. ^[9] ; Evans, II, Neal J. ; Briceno, Cesar ^[10] ; Tobin, John J. ^[11] ; Heyer, Mark ^[12]

Affiliation:Show less -

^[1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Rua Matao 1226, BR-05508900 Sao Paulo, SP - Brazil

^[2] Univ Nacl Autonoma Mexico, Inst Astron, Apartado Postal 70-264, Mexico City 04510, DF - Mexico

^[3] Univ Nacl Autonoma Mexico, Inst Radioastron & Astrofis, Apartado Postal 3-72, Morelia 58089, Michoacan - Mexico

^[4] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn - Germany

^[5] Western Washington Univ, Dept Phys & Astron, 516 High St, Bellingham, WA 98225 - USA

^[6] Natl Radio Astron Observ, Domenici Sci Operat Ctr, 1003 Lopezville Rd, Socorro, NM 87801 - USA

^[7] Univ Michigan, Dept Astron, 1085 S Univ St, Ann Arbor, MI 48109 - USA

^[8] Univ Guadalajara, Ctr Univ Tonala, Ave Nuevo Periferico 555, Tonala 48525, Jalisco - Mexico

^[9] CALTECH, Div Phys Math & Astron, 1200 East Calif Blvd, Pasadena, CA 91125 - USA

^[10] Cerro Tololo Interamer Observ, Casilla 603, La Serena - Chile

^[11] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, 440 W Brooks St, Norman, OK 73019 - USA

^[12] Univ Massachusetts, Dept Astron, Amherst, MA 01003 - USA

• Document type: Journal article
• Source: ASTROPHYSICAL JOURNAL; v. 859, n. 1 MAY 20 2018.
• Web of Science Citations: 16

Abstract

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. (AU)

• FAPESP's process: 09/54006-4 - A computer cluster for the Astronomy Department of the University of São Paulo Institute of Astronomy, Geophysics and Atmospheric Sciences and for the Cruzeiro do Sul University Astrophysics Center
• Grantee: Elisabete Maria de Gouveia Dal Pino
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 13/04934-8 - Kinematics and Evolution of Pre-Main Sequence Stars in Nearby Star-Forming Regions
• Grantee: Phillip Andreas Brenner Galli
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 15/14696-2 - Complementing Gaia from the ground with the dance survey in nearby star-forming regions
• Grantee: Phillip Andreas Brenner Galli
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor