SIMBAD references

2016AJ....152..225H - Astron. J., 152, 225-225 (2016/December-0)

HIghMass-High H I mass, H I-rich galaxies at z ∼ 0: combined H I and H2 observations.

HALLENBECK G., HUANG S., SPEKKENS K., HAYNES M.P., GIOVANELLI R., ADAMS E.A.K., BRINCHMANN J., CARPENTER J., CHENGALUR J., HUNT L.K., MASTERS K.L. and SAINTONGE A.

Abstract (from CDS):

We present resolved H I and CO observations of three galaxies from the HIghMass sample, a sample of H I-massive (MHI>1010 M), gas-rich (MHI in the top 5% for their M*) galaxies identified in the ALFALFA survey. Despite their high gas fractions, these are not low-surface-brightness galaxies and have typical specific star formation rates (SFR/M*) for their stellar masses. The three galaxies have normal SFRs for their H2 masses, but unusually short star formation efficiency scale lengths, indicating that the star formation bottleneck in these galaxies is in the conversion of H I to H2, not in converting H2 to stars. In addition, their dark matter spin parameters (λ) are above average, but not exceptionally high, suggesting that their star formation has been suppressed over cosmic time but is now becoming active, in agreement with prior Hα observations.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: individual: (UGC 6168, UGC 7899, NGC 5230) - galaxies: spiral - radio lines: galaxies - radio lines: galaxies

Simbad objects: 10

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2020.10.24-11:47:10

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