Pattern of H I deficiency in the Virgo cluster

Journal Article · Tue Jul 01 00:00:00 EDT 1986 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/164357· OSTI ID:7021123

Haynes, M P; Giovanelli, R

A sample of 160 galaxies in the Virgo region, including 16 new 21-cm profiles in the Virgo 5-degree core obtained with the 305-m Arecibo telescope, are examined to investigate the severe depletion of interstellar H I within spiral galaxies in the Virgo cluster core. A similar and non-Gaussian distribution is found for the distribution of H I deficiencies of both faint galaxies and brighter spirals, and populations of galaxies with normal abundances of interstellar H I, and those of gas poor objects exhibiting a late-type morphology, are both noted. One-sixth of the sample within the Virgo 5-degree core have lost more than 90 percent by mass of their original neutral hydrogen, and three quarters of the galaxies found within 2.5 degrees of M87 are H I poor by more than a factor of three. The most deficient galaxies are also found to be the ones with the smallest ratios of H I to optical disk size, and H I poor galaxies are redder than normal, indicating that star formation has been quenched. 57 references.

• Research Organization: Cornell Univ., Ithaca, NY; Arecibo Observatory, PR
• OSTI ID: 7021123
• Journal Information: Astrophys. J.; (United States), Vol. 306
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXY CLUSTERS
H1 REGIONS
HYDROGEN
INTERSTELLAR SPACE
RADIOASTRONOMY
RADIOWAVE RADIATION
RED SHIFT
ASTRONOMY
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELEMENTS
NONMETALS
RADIATIONS
SPACE
640105* - Astrophysics & Cosmology- Galaxies
640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources