Neutral-hydrogen observations and maps of early-type galaxies

Journal Article · Thu Oct 01 00:00:00 EDT 1987 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114523· OSTI ID:5671709

Burstein, D; Krumm, N; Salpeter, E E

Measurements are reported 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 4x10 to the 7th to 8x10 to the 8th solar masses (H0=100 km/s/Mpc). Very low upper limits of 3x10 to the 6th and 6x10 to the 6th solar masses 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. 24 references.

• Research Organization: Arizona State Univ., Tempe; Cincinnati Univ., OH; Cornell Univ., Ithaca, NY
• OSTI ID: 5671709
• Journal Information: Astron. J.; (United States), Vol. 94
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXIES
H1 REGIONS
ABUNDANCE
ELLIPTICAL CONFIGURATION
HYDROGEN
MASS
RADIAL VELOCITY
SPATIAL DISTRIBUTION
SPIRAL CONFIGURATION
CONFIGURATION
COSMIC RADIO SOURCES
DISTRIBUTION
ELEMENTS
NONMETALS
VELOCITY
640105* - Astrophysics & Cosmology- Galaxies