Other
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94..883b&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 94, Oct. 1987, p. 883-898.
Other
31
Abundance, Astronomical Maps, Elliptical Galaxies, Hydrogen, Neutral Gases, Spiral Galaxies, Astronomical Spectroscopy, Dwarf Galaxies, Gauss Equation, Radial Velocity
Scientific paper
The authors report measurements of neutral hydrogen in and around 12 elliptical, S0, and early-type spiral galaxies, as well as three spirals of later type. The observations were made with the 4 arcmin "flat" beam of the Arecibo Radio Telescope. Ten of the 12 early-type galaxies were detected, and show small H I masses of 4×107 to 8×108M_sun; (H0 = 100 km/s/Mpc). Very low upper limits of 3×106 and 6×106M_sun; of H I have been established for the S0 galaxies NGC 4382 and 7332. A faint dwarf galaxy 3 arcmin south of NGC 4382 was detected. Together with the previously detected dwarfs around NGC 2859, this suggests that H I-rich companions to H I-poor S0 galaxies may be common. In contrast to the other galaxies mapped in this program, the H I distribution in NGC 3773 is tightly concentrated to the center of the galaxy. The measurements are compared to earlier observations, and satisfactory agreement is found.
Burstein David
Krumm Nathan
Salpeter Edwin E.
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