SIMBAD references

2008ApJ...675L..77B - Astrophys. J., 675, L77-L80 (2008/March-2)

Low metallicity indicates that the hypervelocity star HE 0437-5439 was ejected from the Large Magellanic Cloud.


Abstract (from CDS):

We measure the metallicity of the unusual hypervelocity star HE 0437-5439 from high-resolution spectroscopy to be half-solar. We determine a spectral type of B2 IV-III for the star and derive an effective temperature Teff = 21,500±1000 K and a surface gravity logg = 3.7±0.2 (cgs). We also present BV time series photometry and find the star to be nonvariable at the 0.02 mag level. We refine the magnitude of the hypervelocity star to V=16.36±0.04 mag, with a color B-V=-0.23±0.03 mag, confirming its early-type nature. Our metallicity result establishes the origin of HE 0437-5439 in the Large Magellanic Cloud and implies the existence of a massive black hole somewhere in this galaxy.

Abstract Copyright:

Journal keyword(s): Galaxies: Individual: Name: Large Magellanic Cloud - Stars: Abundances - Stars: Early-Type - stars: individual (HE 0437-5439) - Stellar Dynamics

CDS comments: In introd. SDSS J090745.0+024507 = SDSS J090744.99+024506.9

Simbad objects: 6

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