Darnley, MJ;
Hounsell, R;
Godon, P;
Perley, DA;
Henze, M;
Kuin, NPM;
Williams, BF;
... Shara, MM; + view all
(2017)
No Neon, but Jets in the Remarkable Recurrent Nova M31N 2008-12a?— Hubble Space Telescope Spectroscopy of the 2015 Eruption.
The Astrophysical Journal
, 847
(1)
, Article 35. 10.3847/1538-4357/aa8867.
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Abstract
The 2008 discovery of an eruption of M31N 2008-12a began a journey on which the true nature of this remarkable recurrent nova continues to be revealed. M31N 2008-12a contains a white dwarf (WD) close to the Chandrasekhar limit, accreting at a high rate from its companion, and undergoes thermonuclear eruptions that are observed yearly and may even be twice as frequent. In this paper, we report on Hubble Space Telescope Space Telescope Imaging Spectrograph ultraviolet spectroscopy taken within days of the predicted 2015 eruption, coupled with Keck spectroscopy of the 2013 eruption. Together, this spectroscopy permits the reddening to be constrained to E( ) B V -= 0.10 0.03. The UV spectroscopy reveals evidence for highly ionized, structured, and highvelocity ejecta at early times. No evidence for neon is seen in these spectra, however, but it may be that little insight can be gained regarding the composition of the WD (CO versus ONe).
| Type: | Article |
|---|---|
| Title: | No Neon, but Jets in the Remarkable Recurrent Nova M31N 2008-12a?— Hubble Space Telescope Spectroscopy of the 2015 Eruption |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3847/1538-4357/aa8867 |
| Publisher version: | http://doi.org/10.3847/1538-4357/aa8867 |
| Language: | English |
| Additional information: | © 2017. The American Astronomical Society. All rights reserved. This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Galaxies: individual (M31); novae, cataclysmic variables; stars: individual (M31N 2008-12a); ultraviolet: stars |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10022693 |
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