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. https://resolver.caltech.edu/CaltechAUTHORS:20170111-135559909
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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.
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| 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. | ||||||||||||||||||||||||
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| Subject Keywords: | astrometry – radiation mechanisms: non-thermal – radio continuum: stars – techniques: interferometric | ||||||||||||||||||||||||
| Issue or Number: | 2 | ||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20170111-135559909 | ||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20170111-135559909 | ||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||||||||
| Deposited On: | 18 Jan 2017 19:04 | ||||||||||||||||||||||||
| Last Modified: | 07 Nov 2019 00:49 |
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