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Cepheids as Swiss army knives for Milky Way archaeology

Published online by Cambridge University Press:  02 August 2018

B. Lemasle ,
V. Kovtyukh ,
R. da Silva ,
R. Mor ,
G. Bono ,
F. Figueras ,
P. François ,
L. Inno ,
D. Magurno  and
N. Matsunaga
...Show all authors
B. Lemasle
Affiliation:
Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstr. 1214, 69120 Heidelberg, Germany
V. Kovtyukh
Affiliation:
Astronomical Observatory, Odessa National University, Shevchenko Park, UA-65014 Odessa, Ukraine Isaac Newton Institute of Chile, Odessa Branch, Shevchenko Park, UA-65014 Odessa, Ukraine
R. da Silva
Affiliation:
Dipartimento di Fisica, Universitá di Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Rome, Italy INAF - Osservatorio Astronomico di Roma, via Frascati 33, Monte Porzio Catone, Rome, Italy ASI Science Data Center, via del Politecnico snc, I-00133 Rome, Italy
R. Mor
Affiliation:
Dept. Física Quàntica i Astrofísica, Institut de Ciències del Cosmos, Universitat de Barcelona (IEEC-UB), Martí Franquès 1, 08028 Barcelona, Spain
G. Bono
Affiliation:
Dipartimento di Fisica, Universitá di Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Rome, Italy INAF - Osservatorio Astronomico di Roma, via Frascati 33, Monte Porzio Catone, Rome, Italy
F. Figueras
Affiliation:
Dept. Física Quàntica i Astrofísica, Institut de Ciències del Cosmos, Universitat de Barcelona (IEEC-UB), Martí Franquès 1, 08028 Barcelona, Spain
P. François
Affiliation:
GEPI, Observatoire de Paris, CNRS, Université Paris Diderot, Place Jules Janssen, 92190, Meudon, France UPJV, Université de Picardie Jules Verne, 33 rue St. Leu, 80080, Amiens, France
L. Inno
Affiliation:
Max-Planck-Institut für Astronomie, D-69117 Heidelberg, Germany
D. Magurno
Affiliation:
Dipartimento di Fisica, Universitá di Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Rome, Italy INAF - Osservatorio Astronomico di Roma, via Frascati 33, Monte Porzio Catone, Rome, Italy
N. Matsunaga
Affiliation:
Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
A. McWilliam
Affiliation:
The Observatories of the Carnegie Institute of Washington, 813 Santa Barbara Street, Pasadena, CA, 91101, USA
A. C. Robin
Affiliation:
Institut Utinam, CNRS UMR6213, Université de Bourgogne Franche-Comté, OSU THETA, Observatoire de Besançon, BP 1615, 25010 Besançon
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Abstract

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Cepheids are excellent stellar tracers: they are bright enough to be observed even at large distances; their distances can be accurately determined via period-luminosity relations; their spectra contain numerous lines that enable us to derive abundances for many α, iron-peak or neutron-capture elements. Classical Cepheids are yellow supergiants that trace the young populations (⩽ 300 Myr); Type II Cepheids are post Horizontal Branch, low-mass, Population II stars (⩾ 10 Gyr). Both can be used for many purposes in Milky Way archaeology.

Keywords

stars: variables: Cepheids / stars: abundances / Galaxy: disk / stars: mass function
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S334: Rediscovering our Galaxy , July 2017 , pp. 329 - 330
Copyright
Copyright © International Astronomical Union 2018 

References

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