Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:1006.1504)
· References in the article
· Citations to the Article (10) (Citation History)
· Refereed Citations to the Article
· NED Objects (1)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Wide-field Global VLBI and MERLIN combined monitoring of supernova remnants in M82
Authors:
Fenech, D.; Beswick, R.; Muxlow, T. W. B.; Pedlar, A.; Argo, M. K.
Affiliation:
AA(Department of Physics and Astronomy, University College London, London; Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, Alan Turing Building, University of Manchester, M13 9PL), AB(Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, Alan Turing Building, University of Manchester, M13 9PL), AC(Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, Alan Turing Building, University of Manchester, M13 9PL), AD(Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, Alan Turing Building, University of Manchester, M13 9PL), AE(ICRAR, Curtin University of Technology, GPO Box UI987, Perth, Western Australia 6845, Australia)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 408, Issue 1, pp. 607-621. (MNRAS Homepage)
Publication Date:
10/2010
Origin:
WILEY
Astronomy Keywords:
ISM: HII regions, ISM: supernova remnants, galaxies: individual: M82, galaxies: ISM, galaxies: starburst
Abstract Copyright:
(c) Journal compilation © 2010 RAS
DOI:
10.1111/j.1365-2966.2010.17144.x
Bibliographic Code:
2010MNRAS.408..607F

Abstract

From a combination of Multi-Element Radio-Linked Interferometer Network (MERLIN) and global Very Long Baseline Interferometry (VLBI) observations of the starburst galaxy M82, images of 36 discrete sources at resolutions ranging from ~3 to ~80mas at 1.7GHz are presented. Of these 36 sources, 32 are identified as supernova remnants, two are HII regions and three remain unclassified. Sizes, flux densities and radio brightnesses are given for all of the detected sources. Additionally, global VLBI only data from this project are used to image four of the most compact radio sources. These data provide a fifth epoch of VLBI observations of these sources, covering a 19-yr time-line. In particular, the continued expansion of one of the youngest supernova remnants, 43.31+59.3, is discussed. The deceleration parameter is a power-law index used to represent the time evolution of the size of a supernova remnant. For the source 43.31+59.3, a lower limit to the deceleration parameter is calculated to be 0.53 +/- 0.06, based on a lower limit of the age of this source.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints