Two new x-ray/optical/radio supernova remnants in M31

Benjamin F. Williams; Loránt O. Sjouwerman; Albert K.H. Kong; Joseph D. Gelfand; Michael R. Garcia; Stephen S. Murray

doi:10.1086/424589

Two new x-ray/optical/radio supernova remnants in M31

Benjamin F. Williams, Loránt O. Sjouwerman, Albert K.H. Kong, Joseph D. Gelfand, Michael R. Garcia, Stephen S. Murray

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We compare a deep (37 ks) Chandra ACIS-S image of the M31 bulge to Local Group Survey narrowband optical data and Very Large Array (VLA) radio data of the same region. Our precisely registered images reveal two new optical shells with X-ray counterparts. These shells have sizes, [S _II]/Hα flux ratios, and X-ray spectral properties typical of supernova remnants (SNRs) with ages of 9_-4⁺³ and 17_-9⁺⁶ kyr. Analysis of complementary VLA data reveals the radio counterparts, further confirming that they are SNRs. We discuss and compare the properties and morphologies of these SNRs at the different wavelengths.

Original language	English (US)
Pages (from-to)	720-726
Number of pages	7
Journal	Astrophysical Journal
Volume	615
Issue number	2 I
DOIs	https://doi.org/10.1086/424589
State	Published - Nov 10 2004

Keywords

Galaxies: individual (M31)
Supernova remnants
Techniques: image processing

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/424589

Cite this

@article{ba2ce77d54d24b81b9d489d1e01ded8f,

title = "Two new x-ray/optical/radio supernova remnants in M31",

abstract = "We compare a deep (37 ks) Chandra ACIS-S image of the M31 bulge to Local Group Survey narrowband optical data and Very Large Array (VLA) radio data of the same region. Our precisely registered images reveal two new optical shells with X-ray counterparts. These shells have sizes, [S II]/Hα flux ratios, and X-ray spectral properties typical of supernova remnants (SNRs) with ages of 9-4+3 and 17-9+6 kyr. Analysis of complementary VLA data reveals the radio counterparts, further confirming that they are SNRs. We discuss and compare the properties and morphologies of these SNRs at the different wavelengths.",

keywords = "Galaxies: individual (M31), Supernova remnants, Techniques: image processing",

author = "Williams, {Benjamin F.} and Sjouwerman, {Lor{\'a}nt O.} and Kong, {Albert K.H.} and Gelfand, {Joseph D.} and Garcia, {Michael R.} and Murray, {Stephen S.}",

year = "2004",

month = nov,

day = "10",

doi = "10.1086/424589",

language = "English (US)",

volume = "615",

pages = "720--726",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2 I",

}

TY - JOUR

T1 - Two new x-ray/optical/radio supernova remnants in M31

AU - Williams, Benjamin F.

AU - Sjouwerman, Loránt O.

AU - Kong, Albert K.H.

AU - Gelfand, Joseph D.

AU - Garcia, Michael R.

AU - Murray, Stephen S.

PY - 2004/11/10

Y1 - 2004/11/10

N2 - We compare a deep (37 ks) Chandra ACIS-S image of the M31 bulge to Local Group Survey narrowband optical data and Very Large Array (VLA) radio data of the same region. Our precisely registered images reveal two new optical shells with X-ray counterparts. These shells have sizes, [S II]/Hα flux ratios, and X-ray spectral properties typical of supernova remnants (SNRs) with ages of 9-4+3 and 17-9+6 kyr. Analysis of complementary VLA data reveals the radio counterparts, further confirming that they are SNRs. We discuss and compare the properties and morphologies of these SNRs at the different wavelengths.

AB - We compare a deep (37 ks) Chandra ACIS-S image of the M31 bulge to Local Group Survey narrowband optical data and Very Large Array (VLA) radio data of the same region. Our precisely registered images reveal two new optical shells with X-ray counterparts. These shells have sizes, [S II]/Hα flux ratios, and X-ray spectral properties typical of supernova remnants (SNRs) with ages of 9-4+3 and 17-9+6 kyr. Analysis of complementary VLA data reveals the radio counterparts, further confirming that they are SNRs. We discuss and compare the properties and morphologies of these SNRs at the different wavelengths.

KW - Galaxies: individual (M31)

KW - Supernova remnants

KW - Techniques: image processing

UR - http://www.scopus.com/inward/record.url?scp=11144266703&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=11144266703&partnerID=8YFLogxK

U2 - 10.1086/424589

DO - 10.1086/424589

M3 - Article

AN - SCOPUS:11144266703

SN - 0004-637X

VL - 615

SP - 720

EP - 726

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 I

ER -

Two new x-ray/optical/radio supernova remnants in M31

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this