Show simple item record

dc.contributor.authorDa Costa, G.
dc.contributor.authorSoria, Roberto
dc.contributor.authorFarrell, S.
dc.contributor.authorBayliss, D.
dc.contributor.authorBessell, M.
dc.contributor.authorVogt, F.
dc.contributor.authorZhou, G.
dc.contributor.authorPoints, S.
dc.contributor.authorBeers, T.
dc.contributor.authorLópez-Sanchez, A.
dc.contributor.authorBannister, K.
dc.contributor.authorBell, M.
dc.contributor.authorHancock, Paul
dc.contributor.authorBurlon, D.
dc.contributor.authorGaensler, B.
dc.contributor.authorSadler, E.
dc.contributor.authorTingay, Steven
dc.contributor.authorKeller, S.
dc.contributor.authorSchmidt, B.
dc.contributor.authorTisserand, P.
dc.identifier.citationDa Costa, G. and Soria, R. and Farrell, S. and Bayliss, D. and Bessell, M. and Vogt, F. and Zhou, G. et al. 2018. SMSS J130522.47-293113.0: A high-latitude stellar X-ray source with pc-scale outflow relics? Monthly Notices of the Royal Astronomical Society. 477 (1): pp. 766-779.

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 (f 0.3-10 = (1.2 ± 0.1) × 10 -13 ergs cm 2 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 Ha 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.

dc.publisherOxford University Press
dc.titleSMSS J130522.47-293113.0: A high-latitude stellar X-ray source with pc-scale outflow relics?
dc.typeJournal Article
dcterms.source.titleMonthly Notices of the Royal Astronomical Society

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

curtin.departmentCurtin Institute of Radio Astronomy (Physics)
curtin.accessStatusOpen access

Files in this item


This item appears in the following Collection(s)

Show simple item record