Surface Photometry and Mass Distribution in the Spiral Galaxies NGC1087 and NGC1090

Details Surface Photometry and Mass Distribution in the Spiral Galaxies NGC1087 and NGC1090 Surface Photometry and Mass Distribution in the Spiral Galaxies NGC1087 and NGC1090

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190..459b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 190, P. 459, 1980

Astronomy and Astrophysics

Astronomy

4

Scientific paper

Photographic surface photometry and rotation curves based on long-slit spectra have been obtained for NGC 1087 and NGC 1090. Both galaxies were originally considered to be members of the Cetus I group, but NGC 1090 has a velocity 5σ higher than that of the group so is probably a background object. Total masses and luminosities for the galaxies are 2.7 ± 0.2 × 1010 Msun, 1.4 × 1010 Lsun for NGC l087 and l.l ± 0.2 × 1011 Msun, 2.7 × 1010 Lsun for NGC l090, where H0 = 100 h km s-1 Mpc-1. NGC l094/ANON, apparently in the same group, are a background binary pair with combined masses > 9.4 × 1010 h-1 Msun and luminosities of 5.4 × 1010 Lsun.

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