CaltechAUTHORS
Published January 10, 2017 | Version Published + Submitted
Journal Article Open

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

Creators

  • 1. ROR icon National Autonomous University of Mexico
  • 2. ROR icon Max Planck Institute for Radio Astronomy
  • 3. ROR icon University of Michigan–Ann Arbor
  • 4. ROR icon National Radio Astronomy Observatory
  • 5. ROR icon University of Guadalajara
  • 6. ROR icon California Institute of Technology
  • 7. ROR icon The University of Texas at Austin
  • 8. ROR icon Cerro Tololo Inter-American Observatory
  • 9. ROR icon University of Oklahoma
  • 10. ROR icon Leiden University
  • 11. ROR icon Universidade de São Paulo
  • 12. ROR icon Institut de Planétologie et d'Astrophysique de Grenoble

Abstract

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.

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.

Attached Files

Published - Ortiz-León_2017_ApJ_834_143.pdf

Submitted - 1610.03128v1.pdf

Files

1610.03128v1.pdf

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Additional details

Identifiers

Eprint ID
73438
Resolver ID
CaltechAUTHORS:20170111-135559909

Related works

Describes
https://arxiv.org/abs/1610.03128 (URL)

Funding

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)
Universidad Nacional Autónoma de México (UNAM)
IG100913
von Humboldt Stiftung
NSF
AST-1109116
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Dates

Created
2017-01-18
Created from EPrint's datestamp field
Updated
2021-11-11
Created from EPrint's last_modified field