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:astro-ph/0112033)
· On-line Data
· References in the article
· Citations to the Article (31) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (5)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The Structure of the Oxygen-rich Supernova Remnant G292.0+1.8 from Chandra X-Ray Images: Shocked Ejecta and Circumstellar Medium
Authors:
Park, Sangwook; Roming, Peter W. A.; Hughes, John P.; Slane, Patrick O.; Burrows, David N.; Garmire, Gordon P.; Nousek, John A.
Affiliation:
AA(; Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802; .), AB(; Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802; .), AC(; Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8109.), AD(; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138.), AE(; Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802; .), AF(; Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802; .), AG(; Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802; .)
Publication:
The Astrophysical Journal, Volume 564, Issue 1, pp. L39-L43. (ApJL Homepage)
Publication Date:
01/2002
Origin:
UCP
ApJ Keywords:
ISM: Abundances, ISM: Individual: Alphanumeric: G292.0+1.8, ISM: Supernova Remnants, X-Rays: ISM
DOI:
10.1086/338861
Bibliographic Code:
2002ApJ...564L..39P

Abstract

We present results from the observation of the young Galactic supernova remnant (SNR) G292.0+1.8 with the Advanced CCD Imaging Spectrometer (ACIS) on board the Chandra X-Ray Observatory. In the 0.3-8 keV band, the high-resolution ACIS images reveal a complex morphology consisting of knots and filaments as well as the blast wave around the periphery of the SNR. We present equivalent width (EW) maps for the elemental species O, Ne, Mg, and Si, which allow us to identify regions of enhanced metallicity in the SNR. G292.0+1.8 is bright in O, Ne, and Si and weaker in S and Ar, with little Fe. The EW and broadband images indicate that the metal-rich ejecta are distributed primarily around the periphery of the SNR. The central beltlike structure has a normal solar-type composition, strongly suggesting that it is primarily emission from a shocked circumstellar medium rather than metal-rich ejecta. We propose that the belt traces its origin to enhanced mass loss in the star's equatorial plane during the slow, red supergiant phase. We also identify thin filaments with normal composition, centered on and extending nearly continuously around the outer boundary of the SNR. These may originate in a shell caused by the stellar winds from the massive progenitor in the red/blue supergiant phases, overrun by the blast wave.
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