An Optical Velocity for the Phoenix Dwarf Galaxy
Astrophysics
2009-11-07 v1
Abstract
We present the results of a VLT observing program carried out in service mode using FORS1 on ANTU in Long Slit mode to determine the optical velocities of nearby low surface brightness galaxies. As part of our program of service observations we obtained long-slit spectra of several members of the Phoenix dwarf galaxy from which we derive an optical helio-centric radial velocity of -13 +/- 9km/s. This agrees very well with the velocity of the most promising of the HI clouds seen around Phoenix, which has a helio-centric velocity of -23 km/s, but is significantly different to the recently published optical heliocentric velocity of Phoenix of -52 +/- 6 km/s of Gallart et al. (2001).
Cite
@article{arxiv.astro-ph/0207087,
title = {An Optical Velocity for the Phoenix Dwarf Galaxy},
author = {Mike Irwin and Eline Tolstoy},
journal= {arXiv preprint arXiv:astro-ph/0207087},
year = {2009}
}
Comments
Aceepted for publication in MNRAS