Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-18T16:15:46.292Z Has data issue: false hasContentIssue false
  • English
  • Français

Finding evolved stars in the inner Galactic disk with Gaia

Published online by Cambridge University Press:  07 March 2018

L. H. Quiroga-Nuñez Open the ORCID record for L. H. Quiroga-Nuñez [Opens in a new window] ,
H. J. van Langevelde ,
Y. M. Pihlström ,
L. O. Sjouwerman  and
A. G. A. Brown
L. H. Quiroga-Nuñez
Affiliation:
Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands. emails: [email protected]; [email protected] Joint Institute for VLBI ERIC (JIVE), Postbus 2, 7990 AA Dwingeloo, The Netherlands. email: [email protected]
H. J. van Langevelde
Affiliation:
Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands. emails: [email protected]; [email protected] Joint Institute for VLBI ERIC (JIVE), Postbus 2, 7990 AA Dwingeloo, The Netherlands. email: [email protected]
Y. M. Pihlström
Affiliation:
Department of Physics and Astronomy, University of New Mexico, MSC07 4220, Albuquerque, NM 87131, USA. email: [email protected]
L. O. Sjouwerman
Affiliation:
National Radio Astronomy Observatory, P.O. Box 0, Lopezville Road 1001, Socorro, NM 87801, USA. email: [email protected]
A. G. A. Brown
Affiliation:
Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands. emails: [email protected]; [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The Bulge Asymmetries and Dynamical Evolution (BAaDE) survey will provide positions and line-of-sight velocities of ~20, 000 evolved, maser bearing stars in the Galactic plane. Although this Galactic region is affected by optical extinction, BAaDE targets may have Gaia cross-matches, eventually providing additional stellar information. In an initial attempt to cross-match BAaDE targets with Gaia, we have found more than 5,000 candidates. Of these, we may expect half to show SiO emission, which will allow us to obtain velocity information. The cross-match is being refined to avoid false positives using different criteria based on distance analysis, flux variability, and color assessment in the mid- and near-IR. Once the cross-matches can be confirmed, we will have a unique sample to characterize the stellar population of evolved stars in the Galactic bulge, which can be considered fossils of the Milky Way formation.

Keywords

Galaxy: bulgestars: AGB and post-AGBmasersastrometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S330: Astrometry and Astrophysics in the Gaia sky , April 2017 , pp. 245 - 248
Copyright
Copyright © International Astronomical Union 2018 

References

Belokurov, V., Erkal, D., Deason, A. J., Koposov, S. E. et al. 2017, MNRAS, 466, 4711 Google Scholar
Dwek, E., Arendt, R. G., Hauser, M. G., Kelsall, T., Lisse, C. M. et al. 1995, ApJ, 445, 716 Google Scholar
Sjouwerman, L. O., Capen, S. M., & Claussen, M. J., 2009, ApJ, 705, 1554 CrossRefGoogle Scholar
Sjouwerman, L. O., Pihlström, Y. M., Rich, R. M., Morris, M. R. et al. 2016, in: Crocker, R.M., Longmore, S.N. & Bicknell, G.V. (eds.), The Multi-Messenger Astrophysics of the Galactic Centre, Proc. IAU Symposium No. 332, p. 103Google Scholar
van der Veen, W. E. C. J. & Habing, H. J., 1988, A&A, 194, 125 Google Scholar
Wegg, C. & Gerhard, O., 2013, MNRAS, 435, 1874 Google Scholar