CALCIUM DEPLETION IN COOLING-FLOW NEBULAE AND THE ORIGIN OF THE LINE-EMITTING GAS

被引：46

作者：

DONAHUE, M ^{[1
]}

VOIT, GM ^{[1
]}

机构：

[1] THEORET ASTROPHYS,PASADENA,CA 91125

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 414卷 / 01期

关键词：

COOLING FLOWS; DUST; EXTINCTION; GALAXIES; CLUSTERS; INDIVIDUAL; (2A; 0335+096; A496; HYDRA-A; S1101); ISM;

D O I：

10.1086/186985

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present upper limits on the [Ca II] lambda7291 flux from emission-line nebulae in cluster cooling flows. The observed lack of [Ca II] emission indicates that gas-phase calcium is underabundant in cooling-flow nebulae and is most likely depleted onto dust grains. If calcium in the line-emitting filaments is largely bound into dust, then these filaments probably did not condense out of the hot intracluster gas.

引用

页码：L17 / L20

页数：4

共 38 条

[1]

BAUM SA, 1992, CLUSTERS SUPERCLUSTE, P171

[2]

BEGELMAN MC, 1990, MON NOT R ASTRON SOC, V244, pP26

[3]

BINETTE L, 1985, ASTROPHYS J, V297, P476, DOI 10.1086/163544

[4] INFRARED-EMISSION FROM CENTRAL DOMINANT GALAXIES IN X-RAY LUMINOUS CLUSTERS [J].