330-MHz radio continuum imaging of the W51 complex

Subrahmanyan, Ravi ; Goss, W. M. (1995) 330-MHz radio continuum imaging of the W51 complex Monthly Notices of the Royal Astronomical Society, 275 (3). pp. 755-763. ISSN 0035-8711

PDF - Publisher Version

Official URL: https://academic.oup.com/mnras/article/275/3/755/9...

Related URL: http://dx.doi.org/10.1093/mnras/275.3.755


We present a 1.1-arcmin-resolution image of the W51 complex made with the Very Large Array at a frequency of 330 MHz. W51A and W51B are resolved into multiple components at metre wavelengths for the first time: most of the compact components have spectra that are self-absorbed at this low observing frequency and these components appear surrounded by thermal plasmas with low emission measures. We estimate the electron temperature towards the brightest subcomponent of W51A (G49.5–0.4e) to be >7500 K. This temperature estimate is consistent with inferences from observations of radio recombination lines from the H II region: there is no evidence in our image for a radial temperature decrement within the subcomponent.

Item Type:Article
Source:Copyright of this article belongs to Oxford University Press.
Keywords:HII Regions; ISM: Individual: W51; Supernova Remnants; Radio Continuum: ISM
ID Code:114298
Deposited On:21 May 2018 07:58
Last Modified:21 May 2018 07:58

Repository Staff Only: item control page