SIMBAD references

2007ApJ...657L..89B - Astrophys. J., 657, L89-L92 (2007/March-2)

The Hercules-Aquila cloud.

BELOKUROV V., EVANS N.W., BELL E.F., IRWIN M.J., HEWETT P.C., KOPOSOV S., ROCKOSI C.M., GILMORE G., ZUCKER D.B., FELLHAUER M., WILKINSON M.I., BRAMICH D.M., VIDRIH S., RIX H.-W., BEERS T.C., SCHNEIDER D.P., BARENTINE J.C., BREWINGTON H., BRINKMANN J., HARVANEK M., KRZESINSKI J., LONG D., PAN K., SNEDDEN S.A., MALANUSHENKO O. and MALANUSHENKO V.

Abstract (from CDS):

We present evidence for a substantial overdensity of stars in the direction of the constellations of Hercules and Aquila. The cloud is centered at a Galactic longitude of l~40° and extends above and below the Galactic plane by at least 50°. Given its off-centeredness and height, it is unlikely that the Hercules-Aquila cloud is related to the bulge or thick disk. More likely, this is a new structural component of the Galaxy that passes through the disk. The cloud stretches ∼80° in longitude. Its heliocentric distance lies between 10 and 20 kpc so that the extent of the cloud in projection is ∼20 kpc by ∼15 kpc. It has an absolute magnitude of Mv=-13, and its stellar population appears to be comparable to, but somewhat more metal-rich than, M92.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Kinematics and Dynamics - Galaxies: Structure - Galaxy: Halo - Galaxies: Local Group

Simbad objects: 8

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