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

abstract

• AbstractWe studied molecular gas properties in a sample of 98 Hi - flux selected spiral galaxies within ~ 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 H2 mass in the Virgo galaxies compared to group galaxies, despite their lower mean Hi mass. Combining our data with complementary Hα 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.

authors

• Mok, Angus
• Wilson, Christine D

status

• published 

publication date

• August 2015

has subject area

• 0201 Astronomical and Space Sciences (FoR)

published in

• Proceedings of the International Astronomical Union  Journal

presented at event

• 315th Symposium of the International-Astronomical-Union  Conference

keywords

• Astronomy & Astrophysics
• H-ALPHA
• ISM: molecules
• LEGACY SURVEY
• Physical Sciences
• Science & Technology
• VIRGO
• galaxies: ISM
• galaxies: spiral
• stars: formation

Digital Object Identifier (DOI)

• 10.1017/s1743921316008188

International Standard Book Number (ISBN) 13

• 978-1-107-13520-8

volume

• 11

issue

• S315