H I in giant elliptical galaxies with cooling flows

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/185212· OSTI ID:6740892

Bregman, J N; Roberts, M S; Giovanelli, R

H I measurements were made of three giant elliptical galaxies that have X-ray cooling flows; the 305-m Arecibo telescope was used. In NGC 4406, H I was detected in the center and along the major and minor axis; the total detected mass is 1.5 x 10 to the 8th solar mass. The H I is centrally peaked and is not rotationally supported, properties expected in the cooling-flow picture. The galaxies NGC 4472 and NGC 5846 were not detected and have upper limits of 1.3 and 5.1 x 10 to the 7th solar mass. The failure to detect H I in these objects may imply that the H I is opaque and with a small filling factor, or that the theoretical picture is more complicated than originally believed. 12 references.

• Research Organization: National Radio Astronomy Observatory, Charlotesville, VA (USA)
• OSTI ID: 6740892
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 330; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
COOLING
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELECTROMAGNETIC RADIATION
ELLIPTICAL CONFIGURATION
FLUID FLOW
GALAXIES
GAS FLOW
H1 REGIONS
INTERSTELLAR SPACE
IONIZING RADIATIONS
MASS
RADIATIONS
SPACE
STAR EVOLUTION
X RADIATION