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:0809.4672)
· References in the article
· Citations to the Article (8) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (8)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The distances of supernova remnants Kes 69 and G21.5-0.9 from HI and 13CO spectra
Authors:
Tian, W. W.; Leahy, D. A.
Affiliation:
AA(National Astronomical Observatories, CAS, Beijing 100012, China; Department of Physics & Astronomy, University of Calgary, Calgary, Alberta T2N 1N4, Canada), AB(Department of Physics & Astronomy, University of Calgary, Calgary, Alberta T2N 1N4, Canada)
Publication:
Monthly Notices of the Royal Astronomical Society: Letters, Volume 391, Issue 1, pp. L54-L58. (MNRAS Homepage)
Publication Date:
11/2008
Origin:
MNRAS
MNRAS Keywords:
masers, methods: data analysis, pulsars: individual: J1833-1034, cosmic rays, supernova remnants
DOI:
10.1111/j.1745-3933.2008.00557.x
Bibliographic Code:
2008MNRAS.391L..54T

Abstract

We obtain new HI and 13CO images around supernova remnants Kes 69 and G21.5-0.9. By comparing HI spectra with 13CO emission spectra, we significantly revise the kinematic distance for Kes 69 to ~5.5 kpc, which was 11.2 kpc, and refine the kinematic distance for G21.5-0.9 to ~4.8 kpc. For Kes 69, the highest velocity of absorption is ~86 km s-1 and a prominent HI emission feature at ~112 km s-1 has no respective absorption. These new results suggest that Kes 69 is associated with a newly detected extended 1720-MHz OH maser at velocity of ~85 km s-1 that originates from within the bright southern radio shell of Kes 69. For G21.5-0.9, the highest velocity of absorption is ~67 km s-1. The HI absorption spectra of the nearby bright source PMN J1832-1035 and Kes 69 show a common absorption feature at velocity of ~69 km s-1, which is not seen for G21.5-0.9. The resulting velocity of ~68 km s-1 gives the best distance estimate of ~4.8 kpc for G21.5-0.9 and associated young pulsar J1833-1034.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

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