Hostname: page-component-77c89778f8-n9wrp Total loading time: 0 Render date: 2024-07-16T11:00:56.008Z Has data issue: false hasContentIssue false
  • English
  • Français

Mapping young stellar populations towards Orion with Gaia DR1

Published online by Cambridge University Press:  07 March 2018

Eleonora Zari  and
Anthony G. A. Brown
Eleonora Zari
Affiliation:
Leiden Observatory, Niels Bohrweg 2, 2333 CA Leiden, the Netherlands email: zariem@strw.leidenuniv.nl
Anthony G. A. Brown
Affiliation:
Leiden Observatory, Niels Bohrweg 2, 2333 CA Leiden, the Netherlands email: zariem@strw.leidenuniv.nl
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.

OB associations are prime sites for the study of star formation processes and of the interaction between young massive stars with the interstellar medium. Furthermore, the kinematics and structure of the nearest OB associations provide detailed insight into the properties and origin of the Gould Belt. In this context, the Orion complex has been extensively studied. However, the spatial distribution of the stellar population is still uncertain: in particular, the distances and ages of the various sub-groups composing the Orion OB association, and their connection to the surrounding interstellar medium, are not well determined. We used the first Gaia data release to characterize the stellar population in Orion, with the goal to obtain new distance and age estimates of the numerous stellar groups composing the Orion OB association. We found evidence of the existence of a young and rich population spread over the entire region, loosely clustered around some known groups. This newly discovered population of young stars provides a fresh view of the star formation history of the Orion region.

Keywords

Stars: distances - stars: formation - stars: pre-main sequence - stars: early-type
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S330: Astrometry and Astrophysics in the Gaia sky , April 2017 , pp. 197 - 200
Copyright
Copyright © International Astronomical Union 2018 

References

Blaauw, A., 1964, ARA&A, 2, 213 Google Scholar
Bally, J. 2008, Handbook of Star Forming Regions, Volume I, ed. Reipurth, B., 459Google Scholar
Bressan, A., Marigo, P., Girardi, L. et al. 2012, MNRAS, 427, 127 Google Scholar
Briceño, C. 2008, Handbook of Star Forming Regions, Volume I, ed. Reipurth, B., 838Google Scholar
Brown, A. G. A., de Geus, E. J. & de Zeeuw, P. T., 1994, A&A, 289, 101 Google Scholar
Chen, Y., Girardi, L. & Bressan, A., 2014, MNRAS, 444, 2525 Google Scholar
D ARio, N., Tan, J. C. & Jaehnig, K., 2014, ApJ, 795, 55 Google Scholar
Finkbeiner, D. P., 2003, ApJS, 146, 407 Google Scholar
Gaia Collaboration, Brown, A. G. A., Vallenari, A. et al., 2016a, A&A, 595, A2 Google Scholar
Gaia Collaboration, Prusti, T. de Bruijne, J. H. J., et al., 2016b, A&A, 595, A1 Google Scholar
Jørgensen, B. R. & Lindegren, L., 2005, A&A, 436, 127 Google Scholar
Lindegren, L., Lammers, U., Bastian, U. et al., 2016, A&A, 595, A4 Google Scholar
Michalik, D., Lindegren, L. & Hobbs, D., 2015, A&A, 574, A115 Google Scholar
Muench, A., Getman, K., Hillenbrand, L. & Preibisch, T. 2008, Handbook of Star Forming Regions, Volume I, ed. Reipurth, B., 483Google Scholar
Ochsendorf, B. B., Brown, A. G. A., Bally, J. & Tielens, A. G. G. M., 2015, ApJ, 808, 111 Google Scholar
Planck Collaboration, Abergel, A., Ade, P. A. R., et al., 2014, A&A, 571, A11 Google Scholar
Schlafly, E. F., Green, G., & Finkbeiner, D. P., 2015, ApJ, 799, 116 CrossRefGoogle Scholar
Tang, J., Bressan, A., Rosenfield, P. et al., 2014, MNRAS, 445, 4287 Google Scholar
Valls-Gabaud, D., 2014, EAS Publication Series, Vol. 65, 225, 265 Google Scholar