New periodic 6.7 GHz class II methanol maser associated with G358.460-0.391

Maswanganye, J.P.; Gaylard, M.J.; Goedhart, S.; Van der Walt, D.J.; Booth, Roy S.

dc.contributor.author	Maswanganye, J.P.
dc.contributor.author	Gaylard, M.J.
dc.contributor.author	Goedhart, S.
dc.contributor.author	Van der Walt, D.J.
dc.contributor.author	Booth, Roy S.
dc.date.accessioned	2015-06-23T12:30:47Z
dc.date.available	2015-06-23T12:30:47Z
dc.date.issued	2015-01-21
dc.description.abstract	Eight new class II methanol masers selected from the 6.7 GHz Methanol Multibeam survey catalogues I and II were monitored at 6.7 GHz with the 26m Hartebeesthoek Radio Astronomy Observatory (HartRAO) radio telescope for three years and seven months, from February 2011 to September 2014. The sources were also observed at 12.2 GHz and two were sufficiently bright to permit monitoring. One of the eight sources, namely G358.460-0.391, was found to show periodic variations at 6.7 GHz. The period was determined and tested for significance using the Lomb-Scargle, epoch-folding and Jurkevich methods, and by fitting a simple analytic function. The best estimate for the period of the 6.7 GHz class II methanol maser line associated with G358.460-0.391 is 220.0 ± 0.2 day.	en_ZA
dc.description.librarian	am2015	en_ZA
dc.description.sponsorship	Jabulani Maswanganye would like to express his gratitude for the bursaries from the National Astrophysics Space Science Programme, Hartebeesthoek Radio Astronomy Observatory, the North-West University doctoral scholarships and the South African SKA Project via the NRF.	en_ZA
dc.description.uri	http://mnras.oxfordjournals.org	en_ZA
dc.identifier.citation	Maswanganye, JP, Gaylard, MJ, Goehart, S, Van der Walt, DJ & Booth, RS 2014, 'New periodic 6.7 GHz class II methanol maser associated with G358.460-0.391', Monthly Notices of the Royal Astronomical Society, vol. 446, no. 3, pp. 2730-2737.	en_ZA
dc.identifier.issn	0035-8711 (print)
dc.identifier.issn	1365-2966 (online)
dc.identifier.other	10.1093/mnras/stu2306
dc.identifier.uri	http://hdl.handle.net/2263/45688
dc.language.iso	en	en_ZA
dc.publisher	Oxford University Press	en_ZA
dc.rights	© 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is distributed under the Creative Commons Attribution License.	en_ZA
dc.subject	Masers HII regions ISM	en_ZA
dc.subject	Clouds Radio lines	en_ZA
dc.subject	ISM stars	en_ZA
dc.subject	Formation	en_ZA
dc.title	New periodic 6.7 GHz class II methanol maser associated with G358.460-0.391	en_ZA
dc.type	Article	en_ZA