Neutral-hydrogen observations and maps of early-type galaxies

Journal Article · Thu Oct 01 04:00:00 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), Journal Name: Astron. J.; (United States) Vol. 94; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

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