- Neutral Hydrogen Absorption in Three Virgo Galaxies
- Neutral Hydrogen Absorption in Three Virgo Galaxies
- ㆍ 저자명
- 정애리,이재준,Chung. Aeree,Lee. Jae-Joon
- ㆍ 간행물명
- 천문학회보
- ㆍ 권/호정보
- 2012년|37권 2호|pp.87-87 (1 pages)
- ㆍ 발행정보
- 한국천문학회
- ㆍ 파일정보
- 정기간행물|ENG| PDF텍스트
- ㆍ 주제분야
- 기타
The HI absorption against bright continuum source provides a unique opportunity to measure spin temperature of the neutral hydrogen gas. We find three cases among the sample of the VIVA (VLA Imaging of Virgo galaxies in Atomic gas) study with self absorption of strong central continuum by galactic HI gas. Using the HI flux ratio of emission and absorption, we constrain the spin temperature of the neutral hydrogen gas on their disk. The HI absorption is marginally resolved in these galaxies, which also allows us to probe the kinematics of the absorbing gas. All three galaxies are severely stripped in HI due to the intra cluster medium (ICM). We discuss the influence of environmental processes on the temperature and kinematics of HI in these galaxies.