Atomic and molecular gas components in spiral galaxies of the Virgo cluster
نویسندگان
چکیده
منابع مشابه
Properties of Atomic Gas in Spiral Galaxies
Physical properties of the atomic gas in spiral galaxies are brie y considered. Although both Warm (WNM, 10 K) and Cool (CNM, 100 K) atomic phases coexist in many environments, the dominant mass contribution within a galaxy's star-forming disk (R25) is that of the CNM. Mass fractions of 60 to 90% are found within R25. The CNM is concentrated within moderately opaque laments with a face-on surfa...
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The molecular hydrogen content of a galaxy is a key parameter for its activity and future evolution. Its variations with basic properties such as size, mass, morphological type, and environment, the ratio of molecular to atomic gas masses, should provide us with a better view of galaxy evolution. Such studies have been done in the past by Sage (1993a) or the FCRAO group (e.g. Young & Knezek 198...
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We present distance estimates for eleven peculiar Virgo cluster spiral galaxies based on measurements of the stellar kinematics of their central 2 kpc. Stellar circular velocities were obtained using two-integral dynamical models. Distances were obtained by comparing, at each radius, the stellar circular velocities with synthetic Hα rotation curves derived from NIR Tully-Fisher relations. The r...
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ژورنال
عنوان ژورنال: Astronomy Letters
سال: 2012
ISSN: 1063-7737,1562-6873
DOI: 10.1134/s1063773712020041