DIFFUSE H-ALPHA EMISSION IN THE VIRGO CLUSTER ASSOCIATED WITH THE 3C-273 LYMAN-ALPHA CLOUDS

被引：9

作者：

WILLIAMS, TB ^{[1
]}

SCHOMMER, RA ^{[1
]}

机构：

[1] NATL OPT ASTRON OBSERV,CERRO TOLOLO INTER AMER OBSERV,TUCSON,AZ 85726

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 419卷 / 02期

关键词：

D O I：

10.1086/187135

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have discovered diffuse Halpha emission at a velocity of 1713 +/- 4 km s-1 in the vicinity of the line of sight to the quasar 3C 273. The flux of this line emission is 11.7 +/- 1.8 x 10(-19) ergs cm-2 sec-1 arcsec-1, and appears to be uniformly distributed over a region of at least 7.7' diameter about the quasar. The velocity of the emission agrees with that of one of the Lyalpha forest clouds along the line of sight to the quasar and thus is presumably part of the structure responsible for this Lyalpha absorption. The emission seems to arise from diffuse ionized gas within the Virgo cluster of galaxies, which is along the sightline to 3C 273.

引用

页码：L53 / L55

页数：3

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