The Distance to the Large Magellanic Cloud

Details The Distance to the Large Magellanic Cloud The Distance to the Large Magellanic Cloud

2000-01-31

arxiv.org/abs/astro-ph/0001545v1

Astronomy and Astrophysics

Astrophysics

less detailed and more review-style version of ApJ Letter (528, L9), to be published in the ASP Conference Series Vol. 203, 19

Scientific paper

I demonstrate that the two unexpected results in the local Universe: anomalous intrinsic (V-I)_0 colors of RR Lyrae stars and clump giants in the Galactic center, and very short distances to Magellanic Clouds inferred from clump giants, can be at least partially resolved with a modified coefficient of selective extinction A_V/E(V-I). With this modification, I find a new clump-giant distance modulus to the Large Magellanic Cloud, mu_{LMC} = 18.27 +/- 0.07, which is 0.09 larger than the Udalski (1998b) result. When distance estimates from the red clump, RR Lyrae stars and the eclipsing binary HV2274 are combined, one obtains mu_{LMC} = 18.31 +/- 0.04 (internal).

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