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The Gould's Belt Distances Survey (GOBELINS). III. The Distance to the Serpens/Aquila Molecular Complex

Ortiz-León, Gisela N. and Dzib, Sergio A. and Kounkel, Marina A. and Loinard, Laurent and Mioduszewski, Amy J. and Rodríguez, Luis F. and Torres, Rosa M. and Pech, Gerardo and Rivera, Juana L. and Hartmann, Lee and Boden, Andrew F. and Evans, Neal J., II and Briceño, Cesar and Tobin, John J. and Galli, Phillip A. B. (2017) The Gould's Belt Distances Survey (GOBELINS). III. The Distance to the Serpens/Aquila Molecular Complex. Astrophysical Journal, 834 (2). Art. No. 143. ISSN 0004-637X. doi:10.3847/1538-4357/834/2/143.

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We report on new distances and proper motions to seven stars across the Serpens/Aquila complex. The observations were obtained as part of the Gould's Belt Distances Survey (GOBELINS) project between 2013 September and 2016 April with the Very Long Baseline Array (VLBA). One of our targets is the proto-Herbig AeBe object EC 95, which is a binary system embedded in the Serpens Core. For this system, we combined the GOBELINS observations with previous VLBA data to cover a total period of 8 years, and derive the orbital elements and an updated source distance. The individual distances to sources in the complex are fully consistent with each other, and the mean value corresponds to a distance of 436.0 ± 9.2 pc for the Serpens/W40 complex. Given this new evidence, we argue that Serpens Main, W40, and Serpens South are physically associated and form a single cloud structure.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Ortiz-León, Gisela N.0000-0002-2863-676X
Dzib, Sergio A.0000-0001-6010-6200
Kounkel, Marina A.0000-0002-5365-1267
Loinard, Laurent0000-0002-5635-3345
Rodríguez, Luis F.0000-0003-2737-5681
Rivera, Juana L.0000-0002-7631-2620
Hartmann, Lee0000-0003-1430-8519
Evans, Neal J., II0000-0001-5175-1777
Briceño, Cesar0000-0001-7124-4094
Tobin, John J.0000-0002-6195-0152
Galli, Phillip A. B.0000-0003-2271-9297
Additional Information:© 2017 The American Astronomical Society. Received 2016 September 6; revised 2016 October 10; accepted 2016 October 10; published 2017 January 11. G.N.O.-L., L.L., L.F.R., G.P., and J.L.R. acknowledge CONACyT, Mexico for financial support through grants 339802, 104497, and 153522. L.L. was supported by DGAPA, UNAM grant IG100913. L.L. and G.N.O.-L. also acknowledge support from von Humboldt Stiftung. N.J.E. was supported by NSF grant AST-1109116 to the University of Texas at Austin. P.A.B.G. acknowledges financial support from FAPESP. The National Radio Astronomy Observatory is operated by Associated Universities, Inc., under cooperative agreement with the National Science Foundation.
Funding AgencyGrant Number
Consejo Nacional de Ciencia y Tecnología (CONACYT)339802
Consejo Nacional de Ciencia y Tecnología (CONACYT)104497
Consejo Nacional de Ciencia y Tecnología (CONACYT)153522
Dirección General Asuntos del Personal Académico (DGAPA)UNSPECIFIED
Universidad Nacional Autónoma de México (UNAM)IG100913
von Humboldt StiftungUNSPECIFIED
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)UNSPECIFIED
Subject Keywords:astrometry – radiation mechanisms: non-thermal – radio continuum: stars – techniques: interferometric
Issue or Number:2
Record Number:CaltechAUTHORS:20170111-135559909
Persistent URL:
Official Citation:Gisela N. Ortiz-León et al 2017 ApJ 834 143
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73438
Deposited By: Tony Diaz
Deposited On:18 Jan 2017 19:04
Last Modified:11 Nov 2021 05:16

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