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- Publisher Website: 10.1111/j.1365-2966.2009.15814.x
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Article: The optical emission nebulae in the vicinity of WR 48 (Θ Mus): True Wolf-Rayet ejecta or unconnected supernova remnant?
Title | The optical emission nebulae in the vicinity of WR 48 (Θ Mus): True Wolf-Rayet ejecta or unconnected supernova remnant? |
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Authors | |
Keywords | Stars: winds, outflows Stars: individual: WR 48, HD 113904, Theta (Θ) Muscae Supernova remnants ISM: individual: G304.4-3.1 H ii regions Stars: Wolf-Rayet |
Issue Date | 2010 |
Citation | Monthly Notices of the Royal Astronomical Society, 2010, v. 401, n. 3, p. 1760-1769 How to Cite? |
Abstract | During searches for new optical Galactic supernova remnants (SNRs) in the high-resolution, high-sensitivity Anglo-Australian Observatory/United Kingdom Schmidt Telescope Hα survey of the southern Galactic plane, we uncovered a variety of filamentary and more diffuse, extensive nebular structures in the vicinity of Wolf-Rayet (WR) star 48 (Θ Muscae), only some of which were previously recognized. We used the double-beam spectrograph of the Mount Stromlo and Siding Spring Observatory 2.3-m to obtain low- and mid-resolution spectra of selected new filaments and structures in this region. Despite spectral similarities between the optical spectra of WR star shells and SNRs, a careful assessment of the new spectral and morphological evidence from our deep Hα imagery suggests that the putative shell of Θ Mus is not a WR shell at all, as has been commonly accepted, but is rather part of a more complex area of large-scale overlapping nebulosities in the general field of the WR star. The emission comprises a possible new optical SNR and a likely series of complex H ii regions. Finally, we present the intriguing detection of apparent collimated, directly opposing, ionized outflows close to Θ Mus itself which appears unique among such stars. © 2009 RAS. |
Persistent Identifier | http://hdl.handle.net/10722/208901 |
ISSN | 2023 Impact Factor: 4.7 2023 SCImago Journal Rankings: 1.621 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Stupar, Milorad | - |
dc.contributor.author | Parker, Quentin A. | - |
dc.contributor.author | Filipovíc, Miroslav D. | - |
dc.date.accessioned | 2015-03-23T02:02:08Z | - |
dc.date.available | 2015-03-23T02:02:08Z | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, 2010, v. 401, n. 3, p. 1760-1769 | - |
dc.identifier.issn | 0035-8711 | - |
dc.identifier.uri | http://hdl.handle.net/10722/208901 | - |
dc.description.abstract | During searches for new optical Galactic supernova remnants (SNRs) in the high-resolution, high-sensitivity Anglo-Australian Observatory/United Kingdom Schmidt Telescope Hα survey of the southern Galactic plane, we uncovered a variety of filamentary and more diffuse, extensive nebular structures in the vicinity of Wolf-Rayet (WR) star 48 (Θ Muscae), only some of which were previously recognized. We used the double-beam spectrograph of the Mount Stromlo and Siding Spring Observatory 2.3-m to obtain low- and mid-resolution spectra of selected new filaments and structures in this region. Despite spectral similarities between the optical spectra of WR star shells and SNRs, a careful assessment of the new spectral and morphological evidence from our deep Hα imagery suggests that the putative shell of Θ Mus is not a WR shell at all, as has been commonly accepted, but is rather part of a more complex area of large-scale overlapping nebulosities in the general field of the WR star. The emission comprises a possible new optical SNR and a likely series of complex H ii regions. Finally, we present the intriguing detection of apparent collimated, directly opposing, ionized outflows close to Θ Mus itself which appears unique among such stars. © 2009 RAS. | - |
dc.language | eng | - |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | - |
dc.subject | Stars: winds, outflows | - |
dc.subject | Stars: individual: WR 48, HD 113904, Theta (Θ) Muscae | - |
dc.subject | Supernova remnants | - |
dc.subject | ISM: individual: G304.4-3.1 | - |
dc.subject | H ii regions | - |
dc.subject | Stars: Wolf-Rayet | - |
dc.title | The optical emission nebulae in the vicinity of WR 48 (Θ Mus): True Wolf-Rayet ejecta or unconnected supernova remnant? | - |
dc.type | Article | - |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.doi | 10.1111/j.1365-2966.2009.15814.x | - |
dc.identifier.scopus | eid_2-s2.0-73949123169 | - |
dc.identifier.volume | 401 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | 1760 | - |
dc.identifier.epage | 1769 | - |
dc.identifier.eissn | 1365-2966 | - |
dc.identifier.isi | WOS:000273550500027 | - |
dc.identifier.issnl | 0035-8711 | - |