SMSS J130522.47-293113.0: A high-latitude stellar X-ray source with pc-scale outflow relics?

Da Costa, GS; Soria, R; Farrell, SA; Bayliss, D; Bessell, MS; Vogt, FPA; Zhou, G; Points, SD; Beers, TC; López-Sańchez, AR; Bannister, KW; Bell, M; Hancock, PJ; Burlon, D; Gaensler, BM; Sadler, EM; Tingay, S; Keller, SC; Schmidt, BP; Tisserand, P

SMSS J130522.47-293113.0: A high-latitude stellar X-ray source with pc-scale outflow relics?

Da Costa, GS Soria, R Farrell, SA Bayliss, D Bessell, MS Vogt, FPA Zhou, G Points, SD Beers, TC López-Sańchez, AR Bannister, KW Bell, M

Hancock, PJ Burlon, D Gaensler, BM Sadler, EM Tingay, S Keller, SC Schmidt, BP Tisserand, P

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Publication Type:: Journal Article
Citation:: Monthly Notices of the Royal Astronomical Society, 2018, 477 (1), pp. 766 - 779
Issue Date:: 2018-06-11

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Field	Value	Language
dc.contributor.author	Da Costa, GS	en_US
dc.contributor.author	Soria, R	en_US
dc.contributor.author	Farrell, SA	en_US
dc.contributor.author	Bayliss, D	en_US
dc.contributor.author	Bessell, MS	en_US
dc.contributor.author	Vogt, FPA	en_US
dc.contributor.author	Zhou, G	en_US
dc.contributor.author	Points, SD	en_US
dc.contributor.author	Beers, TC	en_US
dc.contributor.author	López-Sańchez, AR	en_US
dc.contributor.author	Bannister, KW	en_US
dc.contributor.author	Bell, M https://orcid.org/0000-0003-1767-5277	en_US
dc.contributor.author	Hancock, PJ	en_US
dc.contributor.author	Burlon, D	en_US
dc.contributor.author	Gaensler, BM	en_US
dc.contributor.author	Sadler, EM	en_US
dc.contributor.author	Tingay, S	en_US
dc.contributor.author	Keller, SC	en_US
dc.contributor.author	Schmidt, BP	en_US
dc.contributor.author	Tisserand, P	en_US
dc.date.issued	2018-06-11	en_US
dc.identifier.citation	Monthly Notices of the Royal Astronomical Society, 2018, 477 (1), pp. 766 - 779	en_US
dc.identifier.issn	0035-8711	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131007
dc.description.abstract	© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. We report the discovery of an unusual stellar system SMSS J130522.47-293113.0. The optical spectrum is dominated by a blue continuum together with emission lines of hydrogen, neutral, and ionized helium, and the NIII, CIII blend at ~4640-4650 Å. The emission-line profiles vary in strength and position on time-scales as short as 1 d, while optical photometry reveals fluctuations of as much as ~0.2mag in g on time-scales as short as 10-15 min. The system is a weak X-ray source (f0.3-10 = (1.2 ± 0.1) × 10-13 ergs cm2 s-1 in the 0.3-10 keV band) but is not detected at radio wavelengths (3s upper limit of 50 μJy at 5.5 GHz). The most intriguing property of the system, however, is the existence of two 'blobs', a few arcsec in size, that are symmetrically located 3'. 8 (2.2 pc for our preferred system distance of ~2 kpc) each side of the central object. The blobs are detected in optical and near-IR broad-band images but do not show any excess emission in Hα images. We discuss the interpretation of the system, suggesting that the central object is most likely a nova-like CV, and that the blobs are relics of a pc-scale accretion-powered collimated outflow.	en_US
dc.relation.ispartof	Monthly Notices of the Royal Astronomical Society	en_US
dc.relation.isbasedon	10.1093/mnras/sty680	en_US
dc.subject.classification	Astronomy & Astrophysics	en_US
dc.title	SMSS J130522.47-293113.0: A high-latitude stellar X-ray source with pc-scale outflow relics?	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	477	en_US
utslib.for	0201 Astronomical and Space Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	477	en_US

Abstract:

© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. We report the discovery of an unusual stellar system SMSS J130522.47-293113.0. The optical spectrum is dominated by a blue continuum together with emission lines of hydrogen, neutral, and ionized helium, and the NIII, CIII blend at ~4640-4650 Å. The emission-line profiles vary in strength and position on time-scales as short as 1 d, while optical photometry reveals fluctuations of as much as ~0.2mag in g on time-scales as short as 10-15 min. The system is a weak X-ray source (f0.3-10 = (1.2 ± 0.1) × 10-13 ergs cm2 s-1 in the 0.3-10 keV band) but is not detected at radio wavelengths (3s upper limit of 50 μJy at 5.5 GHz). The most intriguing property of the system, however, is the existence of two 'blobs', a few arcsec in size, that are symmetrically located 3'. 8 (2.2 pc for our preferred system distance of ~2 kpc) each side of the central object. The blobs are detected in optical and near-IR broad-band images but do not show any excess emission in Hα images. We discuss the interpretation of the system, suggesting that the central object is most likely a nova-like CV, and that the blobs are relics of a pc-scale accretion-powered collimated outflow.

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http://hdl.handle.net/10453/131007