SIMBAD references

2009AJ....138....1K - Astron. J., 138, 1-6 (2009/July-0)

Large Magellanic cloud distance and structure from near-infrared red clump observations.

KOERWER J.F.

Abstract (from CDS):

We have applied the Infrared Survey Facility Magellanic Clouds Point-Source Catalog to the mapping of the red clump (RC) distance modulus across the Large Magellanic Cloud (LMC). Using the J- (1.25 µm) and H- (1.63 µm) band data to derive a reddening free luminosity function and a theoretical RC absolute magnitude from stellar evolution libraries, we estimate a distance modulus to the LMC of µ = 18.54±0.06. The best fitting plane inclination, i, and the position angle of the line of nodes, φ, have little dependence on the assumed RC absolute magnitude; we find i = 23°.5±0°.4 and φ = 154°.6±1°.2. It was also noted that many fields included a significant asymptotic giant branch bump population that must be accounted for.

Abstract Copyright:

Journal keyword(s): Magellanic Clouds - stars: distances - stars: luminosity function, mass function

Simbad objects: 21

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