Publication Date
2008
Journal or Book Title
The Astrophysical Journal
Abstract
We have observed a 3° × 3° area centered on the M81/M82 group of galaxies using the Robert C. Byrd Green Bank Telescope in a search for analogs to the high-velocity clouds of neutral hydrogen found around our Galaxy. The velocity range from –605 to –85 km s–1 and from 25 to 1970 km s–1 was searched for H I clouds. Over the inner 2° × 2° the 7σ detection threshold was 9.6 × 105 M . We detect five previously unknown H I clouds associated with the group, as well as numerous associated filamentary H I structures, all lying in the range –105 ≤ V helio ≤ +280 km s–1. From the small angular distance of the clouds to group members, and the small velocity difference between group members and clouds, we conclude that the clouds are most likely relics of ongoing interactions between galaxies in the group.
DOI
https://doi.org/10.1088/0004-6256/135/6/1983
Pages
1983
Volume
135
Issue
6
Recommended Citation
Chynoweth, KM; Langston, GI; Yun, Min; Lockman, FJ; Rubin, KHR; and Scoles, SA, "NEUTRAL HYDROGEN CLOUDS IN THE M81/M82 GROUP" (2008). The Astrophysical Journal. 1129.
https://doi.org/10.1088/0004-6256/135/6/1983
Comments
This is the pre-published version harvested from ArXiv. The published version is located at http://iopscience.iop.org/1538-3881/135/6/1983/