Environmental Effects on the ISM and Star Formation Properties of Nearby Spiral Galaxies

被引：1
|
作者：
Mok, Angus [1 ]
Wilson, Christine [1 ]
机构：
[1] McMaster Univ, Dept Phys & Astron, 1280 Main St West, Hamilton, ON, Canada
来源：
FROM INTERSTELLAR CLOUDS TO STAR-FORMING GALAXIES: UNIVERSAL PROCESSES? | 2015年 / 315期
关键词：
galaxies: ISM; galaxies: spiral; ISM: molecules; stars: formation; LEGACY SURVEY; H-ALPHA; VIRGO;
D O I：
10.1017/S1743921316008188
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We studied molecular gas properties in a sample of 98 H I - flux selected spiral galaxies within similar to 25 Mpc using the CO J = 3 - 2 line, observed with the JCMT, and subdivided into isolated, group, and Virgo subsamples. We find a larger mean H-2 mass in the Virgo galaxies compared to group galaxies, despite their lower mean Hi mass. Combining our data with complementary Ha star formation rate measurements, Virgo galaxies have a longer molecular gas depletion times compared to group galaxies, perhaps due to heating processes in the cluster environment or differences in the turbulent pressure.
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页数：2
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