Journal
ASTROPHYSICAL JOURNAL
Volume 657, Issue 2, Pages L89-L92Publisher
IOP PUBLISHING LTD
DOI: 10.1086/513144
Keywords
galaxies : kinematics and dynamics; galaxies : structure; Galaxy : halo; Local Group
Categories
Ask authors/readers for more resources
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 approximate to 40 degrees and extends above and below the Galactic plane by at least 50 degrees. 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 similar to 80 degrees in longitude. Its heliocentric distance lies between 10 and 20 kpc so that the extent of the cloud in projection is similar to 20 kpc by similar to 15 kpc. It has an absolute magnitude of M-nu = -13, and its stellar population appears to be comparable to, but somewhat more metal-rich than, M92.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available