Radio continuum spectra of galaxies in the Virgo cluster region

被引：16

作者：

Vollmer, B

Thierbach, M

Wielebinski, R

机构：

[1] Observ Astron, CDS, UMR 7550, F-67000 Strasbourg, France

[2] Max Planck Inst Radioastron, D-53121 Bonn, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 418卷 / 01期

关键词：

galaxies : clusters : individual : Virgo; galaxies : evolution; galaxies : magnetic fields; radio continuum : galaxies;

D O I：

10.1051/0004-6361:20035759

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

New radio continuum Observations of galaxies in the Virgo cluster region at 4.85, 8.6, and 10.55 GHz are presented. These observations are combined with existing measurements at 1.4 and 0.325 GHz. The sample includes 8 1 galaxies where spectra with more than two frequencies Could be derived. Galaxies that show a radio-FIR excess exhibit central activity (HII, LINER, AGN). The four Virgo galaxies with the highest absolute radio excess are found within 2degrees of the center of the cluster. Galaxies showing flat radio spectra also host active centers. There is no clear trend between the spectral index and the galaxy's distance to file cluster center.

引用

页码：1 / 6

页数：6

共 26 条

[1] Magnetic fields in barred galaxies - I. The atlas [J].