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Evidence for the Galactic Bar from the Two Color Photometry of the Bulge Red Clump Stars

Published online by Cambridge University Press:  25 May 2016

K. Z. Stanek ,
M. Mateo ,
A. Udalski ,
M. Szymański ,
J. Kałużny ,
M. Kubiak  and
W. Krzemiński
K. Z. Stanek
Affiliation:
Princeton University Observatory Princeton, NJ 08544-1001
M. Mateo
Affiliation:
Department of Astronomy, University of Michigan 821 Dennison Bldg., Ann Arbor, MI 48109-1090
A. Udalski
Affiliation:
Warsaw University Observatory Al. Ujazdowskie 4, 00-478 Warszawa, Poland
M. Szymański
Affiliation:
Warsaw University Observatory Al. Ujazdowskie 4, 00-478 Warszawa, Poland
J. Kałużny
Affiliation:
Warsaw University Observatory Al. Ujazdowskie 4, 00-478 Warszawa, Poland
M. Kubiak
Affiliation:
Warsaw University Observatory Al. Ujazdowskie 4, 00-478 Warszawa, Poland
W. Krzemiński
Affiliation:
Carnegie Observatories, Las Campanas Observatory Casilla 601, La Serena, Chile

Extract

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The Optical Gravitational Lensing Experiment (OGLE, Udalski et al. 1994a; Paczynski et al. 1994b – these proceedings; and references therein) is an extensive photometric search for the rare cases of gravitational microlensing of Galactic bulge stars by foreground objects. It provides a huge data base (Szymański & Udalski 1993), from which color-magnitude diagrams have been compiled (Udalski et al. 1993, 1994b). Here we discuss the use a of well-defined population of bulge red clump stars to investigate the presence of the bar in our Galaxy. The results of our earlier studies are described by Stanek et al. (1994).

Type
Chapter 2: Is the Milky Way a Barred Spiral Galaxy?
Information
Symposium - International Astronomical Union , Volume 169: Unsolved Problems of the Milky Way , 1996 , pp. 103 - 109
Copyright
Copyright © Kluwer 1996 

References

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