On the Accretion Origin of a Vast Extended Stellar Disk around the Andromeda Galaxy
@article{Ibata2005OnTA, title={On the Accretion Origin of a Vast Extended Stellar Disk around the Andromeda Galaxy}, author={R. Ibata and S. Chapman and A. Ferguson and G. Lewis and M. Irwin and N. Tanvir}, journal={The Astrophysical Journal}, year={2005}, volume={634}, pages={287-313} }
We present the discovery of an inhomogenous, low surface brightness, extended disklike structure around the Andromeda galaxy (M31) based on a large kinematic survey of more than 2800 stars with the Keck DEIMOS multiobject spectrograph. The stellar structure spans radii from 15 kpc out to ~40 kpc, with detections out to R ~ 70 kpc. The constituent stars have velocities close to the expected velocity of circular orbits in the plane of the M31 disk and typically have a velocity dispersion of ~30… CONTINUE READING
Figures from this paper
175 Citations
On the Formation of Extended Galactic Disks by Tidally Disrupted Dwarf Galaxies
- Physics
- 2006
- 67
- Highly Influenced
- PDF
Discovery and analysis of three faint dwarf galaxies and a globular cluster in the outer halo of the Andromeda galaxy
- Physics
- 2006
- 90
- PDF
Two major accretion epochs in M31 from two distinct populations of globular clusters
- Physics, Medicine
- Nature
- 2019
- 9
- PDF
References
SHOWING 1-10 OF 67 REFERENCES
Exploring Halo Substructure with Giant Stars: Spectroscopy of Stars in the Galactic Anticenter Stellar Structure
- Physics
- 2003
- 119
- PDF
On the Continuing Formation of the Andromeda Galaxy: Detection of H I Clouds in the M31 Halo
- Physics
- 2004
- 161
- PDF
Metallicity and Kinematics of M31’s Outer Stellar Halo from a Keck Spectroscopic Survey*
- Physics
- 2002
- 43
- PDF
Keck Spectroscopy of Red Giant Stars in the Vicinity of M31’S Massive Globular Cluster G1*
- Physics
- 2004
- 28
- Highly Influential
- PDF