GR 8: CO-to-H 2 Conversion Factor at Extremely Low Metallicity

Details GR 8: CO-to-H 2 Conversion Factor at Extremely Low Metallicity GR 8: CO-to-H 2 Conversion Factor at Extremely Low Metallicity

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...446..616v&link_type=abstract

Astrophysical Journal v.446, p.616

Astronomy and Astrophysics

Astronomy

57

Galaxies: Ism, Galaxies: Individual Alphanumeric: Gr 8, Ism: Molecules

Scientific paper

We have obtained CO(2-1) upper limits of 6 and 7 mK toward two positions in the extremely metal poor dwarf irregular galaxy GR 8. The Hα emission of GR 8 shows active star formation which requires that the galaxy contain at least 1.5 × 104 Msun of molecular gas. Our inability to detect CO emission implies that the CO-to-H_{2 }conversion factor in the vicinity of the dominant star-formation region is at least 80 × 1020 molecules cm-2 (K km s-1)-1. We compare GR 8 to all other irregular galaxies for which N(H2)/WCO has been measured; we confirm that the CO-to-H2 conversion factor increases with decreasing metallicity or with increasing linear scale of the observations.

Affiliated with

Also associated with

No associations

Rating

GR 8: CO-to-H 2 Conversion Factor at Extremely Low Metallicity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with GR 8: CO-to-H 2 Conversion Factor at Extremely Low Metallicity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GR 8: CO-to-H 2 Conversion Factor at Extremely Low Metallicity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1202643