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Galactic globular and open cluster fiducial sequences in the Pan-STARRS1 photometric system

Bernard, E.J.; Ferguson, A.M.N.; Schlafly, E.F.; Platais, I.; Bell, E.F.; Martin, N.F.; Rix, H.-W.; Slater, C.T.; Burgett, W.S.; Chambers, K.C.; Draper, P.W.; Hodapp, K.W.; Kaiser, N.; Kudritzki, R.-P.; Magnier, E.A.; Metcalfe, N.; Tonry, J.L.; Wainscoat, R.J.; Waters, C.

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Authors

E.J. Bernard

A.M.N. Ferguson

E.F. Schlafly

I. Platais

E.F. Bell

N.F. Martin

H.-W. Rix

C.T. Slater

W.S. Burgett

K.C. Chambers

K.W. Hodapp

N. Kaiser

R.-P. Kudritzki

E.A. Magnier

J.L. Tonry

R.J. Wainscoat

C. Waters



Abstract

We present the fiducial sequences of a sample of Galactic star clusters in the five bands of the Pan-STARRS1 (PS1) photometric system (gP1, rP1, iP1, zP1, and yP1). These empirical sequences – which include the red giant and sub-giant branches, the main sequence, and the horizontal branch – were defined from deep colour–magnitude diagrams reaching below the oldest main-sequence turn-offs of 13 globular and 3 old open clusters covering a wide range of metallicities ( − 2.4 ≲ [Fe/H] ≲ +0.4). We find excellent agreement for the nine clusters in common with previous studies in similar photometric systems when transformed to the PS1 system. Because the photometric and spectroscopic properties of these stellar populations are accurately known, the fiducials provide a solid basis for the interpretation of observations in the PS1 system, as well as valuable constraints to improve the empirical colour–Teff relations.

Citation

Bernard, E., Ferguson, A., Schlafly, E., Platais, I., Bell, E., Martin, N., …Waters, C. (2014). Galactic globular and open cluster fiducial sequences in the Pan-STARRS1 photometric system. Monthly Notices of the Royal Astronomical Society, 442(4), 2999-3009. https://doi.org/10.1093/mnras/stu1081

Journal Article Type Article
Acceptance Date May 29, 2014
Publication Date Aug 21, 2014
Deposit Date Jun 16, 2015
Publicly Available Date Jun 29, 2015
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 442
Issue 4
Pages 2999-3009
DOI https://doi.org/10.1093/mnras/stu1081
Keywords Surveys, Stars: evolution, Hertzsprung–Russell and colour–magnitude diagrams, Globular clusters: general, Open clusters and associations: general.

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Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. ©: 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.





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