A study of optical observing techniques for extra-galactic supernova remnants : case of NGC300

W. C. Millar; G. L. White; M. D. Filipovic

doi:10.2298/SAJ1284019M

A study of optical observing techniques for extra-galactic supernova remnants : case of NGC300

W. C. Millar, G. L. White, M. D. Filipovic

School of Science

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7 Citations (Scopus)

Abstract

We present the results of a study of observational and identification techniques used for surveys and spectroscopy of candidate supernova remnants (SNRs) in the Sculptor Group galaxy NGC300. The goal of this study was to investigate the reliability of using [SII]/H_alpha > 0.4 in optical SNR surveys and spectra as an identifying feature of extra-galactic SNRs (egSNRs), and also to investigate the effectiveness of the observing techniques (which are hampered by seeing conditions and telescope pointing errors) using this criterion in egSNR surveys and spectrographs. This study is based on original observations of these objects and archival data obtained from the Hubble Space Telescope which contained images of some of the candidate SNRs in NGC300. We found that the reliability of spectral techniques may be questionable and very high-resolution images may be needed to confirm a valid identification of some egSNRs.

Original language	English
Pages (from-to)	19-39
Number of pages	22
Journal	Serbian Astronomical Journal
Volume	184
DOIs	https://doi.org/10.2298/SAJ1284019M
Publication status	Published - 2012

Keywords

Hubble Space Telescope
Sculptor Group
astronomical spectroscopy
galaxies
supernova remnants
surveys
telescopes

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10.2298/SAJ1284019M

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title = "A study of optical observing techniques for extra-galactic supernova remnants : case of NGC300",

abstract = "We present the results of a study of observational and identification techniques used for surveys and spectroscopy of candidate supernova remnants (SNRs) in the Sculptor Group galaxy NGC300. The goal of this study was to investigate the reliability of using [SII]/H_alpha > 0.4 in optical SNR surveys and spectra as an identifying feature of extra-galactic SNRs (egSNRs), and also to investigate the effectiveness of the observing techniques (which are hampered by seeing conditions and telescope pointing errors) using this criterion in egSNR surveys and spectrographs. This study is based on original observations of these objects and archival data obtained from the Hubble Space Telescope which contained images of some of the candidate SNRs in NGC300. We found that the reliability of spectral techniques may be questionable and very high-resolution images may be needed to confirm a valid identification of some egSNRs.",

keywords = "Hubble Space Telescope, Sculptor Group, astronomical spectroscopy, galaxies, supernova remnants, surveys, telescopes",

author = "Millar, {W. C.} and White, {G. L.} and Filipovic, {M. D.}",

year = "2012",

doi = "10.2298/SAJ1284019M",

language = "English",

volume = "184",

pages = "19--39",

journal = "Serbian Astronomical Journal",

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TY - JOUR

T1 - A study of optical observing techniques for extra-galactic supernova remnants : case of NGC300

AU - Millar, W. C.

AU - White, G. L.

AU - Filipovic, M. D.

PY - 2012

Y1 - 2012

N2 - We present the results of a study of observational and identification techniques used for surveys and spectroscopy of candidate supernova remnants (SNRs) in the Sculptor Group galaxy NGC300. The goal of this study was to investigate the reliability of using [SII]/H_alpha > 0.4 in optical SNR surveys and spectra as an identifying feature of extra-galactic SNRs (egSNRs), and also to investigate the effectiveness of the observing techniques (which are hampered by seeing conditions and telescope pointing errors) using this criterion in egSNR surveys and spectrographs. This study is based on original observations of these objects and archival data obtained from the Hubble Space Telescope which contained images of some of the candidate SNRs in NGC300. We found that the reliability of spectral techniques may be questionable and very high-resolution images may be needed to confirm a valid identification of some egSNRs.

AB - We present the results of a study of observational and identification techniques used for surveys and spectroscopy of candidate supernova remnants (SNRs) in the Sculptor Group galaxy NGC300. The goal of this study was to investigate the reliability of using [SII]/H_alpha > 0.4 in optical SNR surveys and spectra as an identifying feature of extra-galactic SNRs (egSNRs), and also to investigate the effectiveness of the observing techniques (which are hampered by seeing conditions and telescope pointing errors) using this criterion in egSNR surveys and spectrographs. This study is based on original observations of these objects and archival data obtained from the Hubble Space Telescope which contained images of some of the candidate SNRs in NGC300. We found that the reliability of spectral techniques may be questionable and very high-resolution images may be needed to confirm a valid identification of some egSNRs.

KW - Hubble Space Telescope

KW - Sculptor Group

KW - astronomical spectroscopy

KW - galaxies

KW - supernova remnants

KW - surveys

KW - telescopes

UR - http://handle.uws.edu.au:8081/1959.7/519494

U2 - 10.2298/SAJ1284019M

DO - 10.2298/SAJ1284019M

M3 - Article

SN - 1450-698X

VL - 184

SP - 19

EP - 39

JO - Serbian Astronomical Journal

JF - Serbian Astronomical Journal

ER -

A study of optical observing techniques for extra-galactic supernova remnants : case of NGC300

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Keywords

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