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| 題名: | M31N 2008-12a - The REMARKABLE RECURRENT NOVA in M31: PANCHROMATIC OBSERVATIONS of the 2015 ERUPTION |
| 作者: | 陳婷琬;Darnley, M. J.;Henze, M.;Bode, M. F.;Hachisu, I.;Hernanz, M.;Hornoch, K.;Hounsell, R.;Kato, M.;Ness, J.-U.;Osborne, J. P.;Page, K. L.;Ribeiro, V. A. R. M.;Rodríguez-Gil, P.;Shafter, A. W.;Shara, M. M.;Steele, I. A.;Williams, S. C.;Arai, A.;Arcavi, I.;Barsukova, E. A.;Boumis, P.;Chen, T.;Fabrika, S.;Figueira, J.;Gao, X.;Gehrels, N.;Godon, P.;Goranskij, V. P.;Harman, D. J.;Hartmann, D. H.;Hosseinzadeh, G.;Horst, J. Chuck;Itagaki, K.;José, J.;Kabashima, F.;Kaur, A.;Kawai, N.;Kennea, J. A.;Kiyota, S.;Ku áková, H.;Lau, K. M.;Maehara, H.;Naito, H.;Nakajima, K.;Nishiyama, K.;O'Brien, T. J.;Quimby, R.;Sala, G.;Sano, Y.;Sion, E. M.;Valeev, A. F.;Watanabe, F.;Watanabe, M.;Williams, B. F.;Xu, Z. |
| 貢獻者: | 理學院天文研究所 |
| 關鍵詞: | Andromeda Galaxy;Astrophysics;ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;Collimation;COMPARATIVE EVALUATIONS;DETECTION;Dwarf novae;EMISSION;Emission lines;Emission spectra;ERUPTION;EXPLOSIONS;GALAXIES;galaxies: individual (M31);High temperature;Infrared photometry;IONIZATION;Near infrared radiation;NOVAE;novae, cataclysmic variables;Particulate matter;PHOTOMETRY;SPACE;SPECTRA;SPECTROSCOPY;Spectrum analysis;stars: individual (M31N 2008-12a);STOCHASTIC PROCESSES;Supernova;TEMPERATURE RANGE 0400-1000 K;ULTRAVIOLET RADIATION;ultraviolet: stars;VELOCITY;WAVELENGTHS;WHITE DWARF STARS;X-rays: binaries |
| 日期: | 2016-12-20 |
| 上傳時間: | 2026-04-21 15:00:18 (UTC+8) |
| 出版者: | IOP Publishing Ltd.;Philadelphia: The American Astronomical Society |
| 摘要: | 摘要： ABSTRACT The Andromeda Galaxy recurrent nova M31N 2008-12a had been observed in eruption 10 times, including yearly eruptions from 2008 to 2014. With a measured recurrence period of days (we believe the true value to be half of this) and a white dwarf very close to the Chandrasekhar limit, M31N 2008-12a has become the leading pre-explosion supernova type Ia progenitor candidate. Following multi-wavelength follow-up observations of the 2013 and 2014 eruptions, we initiated a campaign to ensure early detection of the predicted 2015 eruption, which triggered ambitious ground- and space-based follow-up programs. In this paper we present the 2015 detection, visible to near-infrared photometry and visible spectroscopy, and ultraviolet and X-ray observations from the Swift observatory. The LCOGT 2 m (Hawaii) discovered the 2015 eruption, estimated to have commenced at August 28.28 0.12 UT. The 2013-2015 eruptions are remarkably similar at all wavelengths. New early spectroscopic observations reveal short-lived emission from material with velocities ∼13,000 km s−1, possibly collimated outflows. Photometric and spectroscopic observations of the eruption provide strong evidence supporting a red giant donor. An apparently stochastic variability during the early supersoft X-ray phase was comparable in amplitude and duration to past eruptions, but the 2013 and 2015 eruptions show evidence of a brief flux dip during this phase. The multi-eruption Swift/XRT spectra show tentative evidence of high-ionization emission lines above a high-temperature continuum. Following Henze et al. (2015a), the updated recurrence period based on all known eruptions is days, and we expect the next eruption of M31N 2008-12a to occur around 2016 mid-September.
其他題名： APJ
其他題名： Astrophys. J
出版者： Philadelphia: The American Astronomical Society
出版日期： 2016-12-20
出處： The Astrophysical journal, 2016-12, Vol.833 (2), p.149
資源來源： IoP Science journals
版權： 2016. The American Astronomical Society. All rights reserved.
版權： Copyright IOP Publishing Dec 20, 2016
識別號： ISSN: 0004-637X
識別號： ISSN: 1538-4357
識別號： EISSN: 1538-4357
識別號： DOI: 10.3847/1538-4357/833/2/149 |
| 顯示於類別: | [天文研究所] 期刊論文
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