The mass-to-light ratios of low surface brightness spiral galaxies: Clues from the Tully-Fisher relation

Details The mass-to-light ratios of low surface brightness spiral galaxies: Clues from the Tully-Fisher relation The mass-to-light ratios of low surface brightness spiral galaxies: Clues from the Tully-Fisher relation

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...438...72s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 438, no. 1, p. 72-82

Astronomy and Astrophysics

Astrophysics

79

Brightness Distribution, Luminosity, Mass To Light Ratios, Spiral Galaxies, Astronomical Photometry, Data Processing, Galactic Evolution, Interstellar Gas, Scattering

Scientific paper

We have obtained 21 cm profiles and CCD surface photometry for a subset of field low surface brightness (LSB) spiral galaxies found by a large survey using the Automated Plate Measuring (APM) machine. We find that the LSB spirals generally follow the same Tully-Fisher relations defined by a sample of higher surface brightness (HSB) galaxies drawn from the Ursa Major cluster, albeit with a considerably greater scatter. This general trend implies that LSB galaxies of a given total luminosity have mass-to-light ratios (M/L) similar to those of HSB galaxies of comparable total luminosity, despite their differences in luminosity density (i.e., surface brightness). We also find evidence that galaxies with extremely large half-lit radii (the Malin 1 cousins) tend to be excessively luminous for their rotation speeds. We find that, at a given profile width, the luminosity of an LSB galaxy relative to the Tully-Fisher relation seems to be weakly anticorrelated with gas richness, indicating that some of the higher scatter may be associated with the evolutionary status of the LSB galaxies. Finally, we find that the LSB galaxies tend to have higher total atomic gas masses than the Ursa Major comparison galaxies, depsite the genrally comparable optical luminosities between the two sets.

Affiliated with

Also associated with

No associations

Rating

The mass-to-light ratios of low surface brightness spiral galaxies: Clues from the Tully-Fisher relation 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 The mass-to-light ratios of low surface brightness spiral galaxies: Clues from the Tully-Fisher relation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The mass-to-light ratios of low surface brightness spiral galaxies: Clues from the Tully-Fisher relation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1818774