[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5303/PKAS.2015.30.2.491

MOLECULAR GAS PROPERTIES UNDER ICM PRESSURE IN THE CLUSTER ENVIRONMENT

LEE, BUMHYUN (Department of Astronomy, Yonsei University)
CHUNG, AEREE (Department of Astronomy, Yonsei University)

Publication Information

Publications of The Korean Astronomical Society / v.30, no.2, 2015 , pp. 491-494 More about this Journal

Abstract

We present 12CO (2-1) data for four spiral galaxies (NGC 4330, NGC 4402, NGC 4522, NGC 4569) in the Virgo cluster that are undergoing different ram pressure stages. The goal is to probe the detailed molecular gas properties under strong intra-cluster medium (ICM) pressure using high-resolution millimeter data taken with the Submillimeter Array (SMA). Combining this with Institut de RadioAstronomie $Millim{\acute{e}}trique$ (IRAM) data, we also study spatially resolved temperature and density distributions of the molecular gas. Comparing with multi-wavelength data (optical, $H\small{I}$ , UV, $H{\alpha}$ ), we discuss how molecular gas properties and star formation activity change when a galaxy experiences $H\small{I}$ stripping. This study suggests that ICM pressure can modify the physical and chemical properties of the molecular gas significantly even if stripping does not take place. We discuss how this affects the star formation rate and galaxy evolution in the cluster environment.

Keywords

galaxies: clusters: intracluster medium; galaxies: evolution; galaxies: ISM; galaxies: spiral; galaxies: star formation; submillimetere: galaxies;

Citations & Related Records

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