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RR Lyrae Variables in Local Group Galaxies: LMC, Leo I. New Results and Distances to these Galaxies1

Published online by Cambridge University Press:  12 April 2016

G. Clementini ,
A. Bragaglia ,
L. Di Fabrizio ,
M. Maio ,
E. Carretta ,
R.G. Gratton ,
E.V. Held ,
Y. Momany ,
L. Rizzi  and
I. Saviane
G. Clementini*
Affiliation:
Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy
A. Bragaglia
Affiliation:
Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy
L. Di Fabrizio
Affiliation:
Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy
M. Maio
Affiliation:
Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy
E. Carretta
Affiliation:
Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 1-35122 Padova, Italy
R.G. Gratton
Affiliation:
Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 1-35122 Padova, Italy
E.V. Held
Affiliation:
Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 1-35122 Padova, Italy
Y. Momany
Affiliation:
Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 1-35122 Padova, Italy
L. Rizzi
Affiliation:
Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 1-35122 Padova, Italy
I. Saviane
Affiliation:
Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 1-35122 Padova, Italy
*
2 e-mail: gisella@bo astro.it

Abstract

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We present new results on a sample of RR Lyrae variables in the bar of the Large Magellanic Cloud (LMC), and report on the first detection of RR Lyrae in the dwarf spheroidal galaxy Leo I. Emphasis is given to the discussion of the distances to these galaxies as derived from their RR Lyrae populations, and of the impact on the “short” and “long” distance scale dichotomy.

Type
Part 1.3. Stellar Pulsation and the Distance Scale
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 124 - 127
Copyright
Copyright © Astronomical Society of the Pacific 2002

Footnotes

1

1Based on observations made with the 1.5 m Danish and the 2.2 m ESO-MPI telescopes, at La Silla, Chile.

References

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