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Calibration and characterisation of the Gaia Red Clump

Published online by Cambridge University Press:  07 March 2018

L. Ruiz-Dern ,
C. Babusiaux ,
F. Arenou ,
C. Danielski ,
C. Turon  and
P. Sartoretti
L. Ruiz-Dern
Affiliation:
GEPI, Observatoire de Paris, PSL Research University, CNRS UMR 8111 - 5 Place Jules Janssen, 92190 Meudon, France email: laura.ruiz-dern@obspm.fr
C. Babusiaux
Affiliation:
GEPI, Observatoire de Paris, PSL Research University, CNRS UMR 8111 - 5 Place Jules Janssen, 92190 Meudon, France email: laura.ruiz-dern@obspm.fr
F. Arenou
Affiliation:
GEPI, Observatoire de Paris, PSL Research University, CNRS UMR 8111 - 5 Place Jules Janssen, 92190 Meudon, France email: laura.ruiz-dern@obspm.fr
C. Danielski
Affiliation:
GEPI, Observatoire de Paris, PSL Research University, CNRS UMR 8111 - 5 Place Jules Janssen, 92190 Meudon, France email: laura.ruiz-dern@obspm.fr
C. Turon
Affiliation:
GEPI, Observatoire de Paris, PSL Research University, CNRS UMR 8111 - 5 Place Jules Janssen, 92190 Meudon, France email: laura.ruiz-dern@obspm.fr
P. Sartoretti
Affiliation:
GEPI, Observatoire de Paris, PSL Research University, CNRS UMR 8111 - 5 Place Jules Janssen, 92190 Meudon, France email: laura.ruiz-dern@obspm.fr
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Abstract

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We present new empirical Colour-Colour and Effective Temperature-Colour Gaia Red Clump calibrations. The selected sample takes into account high photometric quality, good spectrometric metallicity, homogeneous effective temperatures and low interstellar extinctions. From those calibrations we developed a method to derive the absolute magnitude, temperature and extinction of the Gaia RC. We tested our colour and extinction estimates on stars with measured spectroscopic effective temperatures and Diffuse Interstellar Band (DIB) constraints. Within the Gaia Validation team these calibrations are also being used, together with asteroseismic constraints, to check the parallax zero-point with Red Clump stars.

Keywords

Gaia Red Clumpphotometrystellar parameters: interstellar extinctioneffective temperature
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S330: Astrometry and Astrophysics in the Gaia sky , April 2017 , pp. 313 - 316
Copyright
Copyright © International Astronomical Union 2018 

References

Alves, D. R., 2000, ApJ, 539, 732 Google Scholar
Arenou, F., Luri, X., Babusiaux, C., Fabricius, C., et al., 2017, A&A, 599, A50 Google Scholar
Bressan, A., Marigo, P., Girardi, L., et al., 2012, MNRAS, 427, 127 Google Scholar
Capitanio, L., Lallement, R., Vergely, J. L., et al. 2017, ArXiv e-prints Google Scholar
Danielski, C., Babusiaux, C., Ruiz-Dern, L., et al. 2017 (in prep.)Google Scholar
Fitzpatrick, E. L. & Massa, D., 2007, ApJ, 663, 320 Google Scholar
Gaia Collaboration, Brown, A. G. A., Vallenari, A., Prusti, T., et al., 2016, A&A, 595, A2 Google Scholar
García Pérez, A. E., Allende Prieto, C., Holtzman, J. A., et al., 2016, AJ, 151, 144 CrossRefGoogle Scholar
González Hernández, J. I. & Bonifacio, P., 2009, A&A, 497, 497 Google Scholar
Groenewegen, M. A. T., 2008, A&A, 488, 935 Google Scholar
Holtzman, J. A., Shetrone, M., Johnson, J. A., et al., 2015, AJ, 150, 148 Google Scholar
Huang, Y., Liu, X.-W., Yuan, H.-B., et al., 2015, MNRAS, 454, 2863 Google Scholar
Laney, C. D., Joner, M. D., & Pietrzyński, G, 2012, MNRAS, 419, 1637 Google Scholar
Plummer, Martyn, 2008, Biostatistics, 3, 523 Google Scholar
Pourbaix, D., Tokovinin, A. A., Batten, A. H., et al. 2009, VizieR Online Data Catalog Google Scholar
Ramírez, I. & Meléndez, J., 2005, ApJ, 626, 446 Google Scholar
Rodrigues, T. S., Girardi, L., Miglio, A., Bossini, D., et al., 2014, MNRAS, 445, 2758 Google Scholar
Ruiz-Dern, L., Babusiaux, C., Arenou, F., Turon, C., & Lallement, R. 2017 (submitted), A&A Google Scholar
SDSS Collaboration et al. 2016, ArXiv e-prints Google Scholar
Udalski, A., 2000, ApJ Letters, 531, L25 Google Scholar
Zasowski, G., Ménard, B., Bizyaev, D., et al., 2010, ApJ, 798, 35 CrossRefGoogle Scholar