The Remarkable 60 x 2 kpc Optical Filament Associated with a Poststarburst Galaxy in Coma Cluster
Astrophysics
2011-02-11 v1
Abstract
In the deep narrow band image of the Coma Cluster taken with Suprime-Cam of the Subaru telescope, we found an extremely long and narrow (~ 60 kpc x 2 kpc) Halpha emitting region associated with a poststarburst galaxy (D100). Follow up spectroscopy shows that the region has the same redshift as D100. The surface brightness of the region is typically 25 mag(AB) arcsec^-2 in Halpha, which corresponds to 0.5--4x10^-17 erg s^-1 cm^-2 arcsec^-2. We set two possible explanations for the origin of the region; gas stripped off from a merged dwarf, or gas stripped off from D100 by ram pressure. Either scenario has difficulty to fully explain all the observed characteristics of the region.
Cite
@article{arxiv.astro-ph/0701126,
title = {The Remarkable 60 x 2 kpc Optical Filament Associated with a Poststarburst Galaxy in Coma Cluster},
author = {Masafumi Yagi and Yutaka Komiyama and Michitoshi Yoshida and Hisanori Furusawa and Nobunari Kashikawa and Yusei Koyama and Sadanori Okamura},
journal= {arXiv preprint arXiv:astro-ph/0701126},
year = {2011}
}
Comments
6 pages, 9 figures, accepted for publication in ApJ