The optical jet in 3C 31 on 15 arcsec scales

被引：7

作者：

Croston, JH

Birkinshaw, M

Conway, E

Davies, RL

机构：

[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[2] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

[3] Univ Oxford, Oxford OX1 3RH, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2003年 / 339卷 / 01期

关键词：

galaxies : active; galaxies : individual : NGC 383; galaxies : jets;

D O I：

10.1046/j.1365-8711.2003.06145.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Evidence has been found for optical emission from the northern radio jet of 3C 31, the radio source associated with NGC 383. The jet emerges from the dust disc and ring of emission at a radius of 5 arcsec, and within 10.4 arcsec is measured to have a B -band flux of 2.1 muJy and an R -band flux of 2.3 muJy. The radio-to-optical spectral index of this region is 0.78. A second connected region, 11.8 arcsec along the jet in position angle 340degrees, found to have similar optical colours and radio-to-optical spectral index may also be jet emission. We combine our new data with recent radio and X-ray results to conclude that the emission of the jet is synchrotron from the radio to the X-ray.

引用

页码：82 / 86

页数：5