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Breaking the Habit: The Peculiar 2016 Eruption of the Unique Recurrent Nova M31N 2008-12a
Henze, M.1,2; Darnley, M. J.3; Williams, S. C.3,4; Kato, M.5; Hachisu, I.6; Anupama, G. C.7; Arai, A.8; Boyd, D.9,10; Burke, D.11; Ciardullo, R.12,13; Chinetti, K.14; Cook, L. M.10; Cook, M. J.10; Erdman, P.11; Gao, X.15; Harris, B.10; Hartmann, D. H.16; Hornoch, K.17; Horst, J. Chuck1; Hounsell, R.18,19; Husar, D.10,20; Itagaki, K.21; Kabashima, F.22; Kafka, S.10; Kaur, A.16; Kiyota, S.23; Kojiguchi, N.24; Kucakova, H.17,25,26; Kuramoto, K.27; Maehara, H.28; Mantero, A.10; Masci, F. J.29; Matsumoto, K.23; Naito, H.30; Ness, J-U.31; Nishiyama, K.22; Oksanen, A.10; Osborne, J. P.32; Page, K. L.32; Paunzen, E.33; Pavana, M.7; Pickard, R.9,10; Prieto-Arranz, J.34,35; Rodriguez-Gil, P.34,35; Sala, G.36,37; Sano, Y.27; Shafter, A. W.1; Sugiura, Y.24; Tan, H.38; Tordai, T.39; Vrastil, J.17,25; Wagner, R. M.40; Watanabe, F.30; Williams, B. F.41; Bode, M. F.3,42; Bruno, A.10; Buchheim, B.10; Crawford, T.10; Goff, B.10; Hernanz, M.2; Igarashi, A. S.1; Jose, J.36,37; Motta, M.10; O'Brien, T. J.43; Oswalt, T.11; Poyner, G.9,10; Ribeiro, V. A. R. M.44,45,46; Sabo, R.10; Shara, M. M.47; Shears, J.9; Starkey, D.10; Starrfield, S.48; Woodward, C. E.49
Contribution Rank15

Since its discovery in 2008, the Andromeda galaxy nova M31N 2008-12a has been observed in eruption every single year. This unprecedented frequency indicates an extreme object, with a massive white dwarf and a high accretion rate,which is the most promising candidate for the single-degenerate progenitor of a Type Ia supernova known to date. The previous three eruptions of M31N 2008-12a have displayed remarkably homogeneous multiwavelength properties:. (i) from a faint peak, the optical light curve declined rapidly by two magnitudes in less than two days, (ii) early spectra showed initial high velocities that slowed down significantly within days and displayed clear He/N lines throughout, and (iii) the supersoft X-ray source (SSS) phase of the nova began extremely early, six days after eruption, and only lasted for about two weeks. In contrast, the peculiar 2016 eruption was clearly different. Here we report (i) the considerable delay in the 2016 eruption date, (ii) the significantly shorter SSS phase, and (iii) the brighter optical peak magnitude (with a hitherto unobserved cusp shape). Early theoretical models suggest that these three different effects can be consistently understood as caused by a lower quiescence mass accretion rate. The corresponding higher ignition mass caused a brighter peak in the free-free emission model. The less massive accretion disk experienced greater disruption, consequently delaying the re-establishment of effective accretion. Without the early refueling, the SSS phase was shortened. Observing the next few eruptions will determine whether the properties of the 2016 outburst make it a genuine outlier in the evolution of M31N 2008-12a.

KeywordGalaxies: Individual (M31) Stars: Individual (M31n 2008-12a) Ultraviolet: Stars X-rays: Binaries Novae Cataclysmic Variables
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordPhoton Imaging Camera ; X-ray-emission ; Xmm-newton ; Cataclysmic Variables ; Classical Novae ; Optical Novae ; White-dwarfs ; Telescope ; Stars ; Absorption
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000430190000006
Funding OrganizationNASA ; NASA(NAS 5-26555) ; NASA through a grant from STScI(14651) ; STFC ; MEXT of Japan ; Eberly College of Science at the Pennsylvania State University ; Office of the Senior Vice President for Research at the Pennsylvania State University ; Spanish Ministry of Economy and Competitiveness (MINECO)(FDPI-2013-16933) ; Generalitat de Catalunya/CERCA programme ; Liverpool John Moores University ; Japan Society for the Promotion of Science(15K05026, 16K05289) ; GROWTH project - National Science Foundation(1545949) ; MINECO(ESP2015_66134_R) ; Generalitat de Catalunya/CERCA program ; HST(14651) ; Ministry of Education of the Czech Republic(LG15010) ; Fundacao para a Ciencia e a Tecnologia (FCT)(IF/00498/2015) ; Center for Research & Development in Mathematics and Applications (CIDMA) strategic project(UID/MAT/04106/2013) ; Enabling Green E-science for the Square Kilometer Array Research Infrastructure (ENGA-GESKA) - Programa Operacional Competitividade e Internacionalizacao (COMPETE)(POCI-01-0145-FEDER-022217) ; FCT, Portugal ; Ramon y Cajal fellowship(RYC2010-05762) ; UK Space Agency ; U.S. NSF(AST-1358787) ; HST ; (RVO: 67985815)
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorHenze, M.
Affiliation1.San Diego State Univ, Dept Astron, San Diego, CA 92182 USA
2.CSIC, IEEC, Inst Ciencies Espai, Campus UAB,C Can Magrans S-N, E-08193 Cerdanyola Del Valles, Spain
3.Liverpool John Moores Univ, Astrophys Res Inst, IC2 Liverpool Sci Pk, Liverpool L3 5RF, Merseyside, England
4.Univ Lancaster, Phys Dept, Lancaster LA1 4YB, England
5.Keio Univ, Dept Astron, Yokohama, Kanagawa 2238521, Japan
6.Univ Tokyo, Coll Arts & Sci, Dept Earth Sci & Astron, Meguro Ku, 3-8-1 Komaba, Tokyo 1538902, Japan
7.Indian Inst Astrophys, Bangalore 560034, Karnataka, India
8.Kyoto Sangyo Univ, Koyama Astron Observ, Kita Ku, Kyoto, Kyoto 6038555, Japan
9.British Astron Assoc, Variable Star Sect, Burlington House, London W1J 0DU, England
10.Amer Assoc Variable Star Observers, 49 Bay State Rd, Cambridge, MA 02138 USA
11.Embry Riddle Aeronaut Univ, Daytona Beach, FL USA
12.Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA
13.Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA
14.CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA
15.Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
16.Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA
17.Acad Sci, Astron Inst, CZ-25165 Ondrejov, Czech Republic
18.Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
19.Univ Illinois, Dept Astron, 1002 W Green St, Urbana, IL 61801 USA
20.Stiftung Interakt Astron & Astrophys, Geschwister Scholl Pl, D-72074 Tubingen, Germany
21.Itagaki Astron Observ, Yamagata 9902492, Japan
22.Miyaki Argenteus Observ, Saga 8401102, Japan
23.VSOLJ, 7-1 Kitahatsutomi, Kamagaya 2730126, Japan
24.Osaka Kyoiku Univ, 4-698-1 Asahigaoka, Osaka 5828582, Japan
25.Charles Univ Prague, Astron Inst, Fac Math & Phys, V Holesovickach 2, Prague 18000 8, Czech Republic
26.Silesian Univ Opava, Inst Phys, Fac Philosophy & Sci, Bezrucovo Nam 13, CZ-74601 Opava, Czech Republic
27.Hokkaido Univ, Dept Cosmosci, Kita Ku, Kita 10,Nishi 8, Sapporo, Hokkaido 0600810, Japan
28.Okayama Astrophys Observ, NINS, NAOJ, 3037-5 Honjo, Okayama 7190232, Japan
29.CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA
30.Nayoro Observ, 157-1 Nisshin, Nayoro, Hokkaido 0960066, Japan
31.European Space Astron Ctr, XMM Newton Observ SOC, Camino Bajo Castillo S-N, E-28692 Madrid, Spain
32.Univ Leicester, Dept Phys & Astron, X Ray & Observat Astron Grp, Leicester LE1 7RH, Leics, England
33.Masaryk Univ, Dept Theoret Phys & Astrophys, Kotlarska 2, Brno 61137, Czech Republic
34.Inst Astrofis Canarias, Via Lactea S-N, E-38205 San Cristobal la Laguna, Santa Cruz De T, Spain
35.Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Santa Cruz De T, Spain
36.Univ Politecn Cataluna, BarcelonaTech, Dept Fis, EEBE, Av Eduard Maristany 10-14, E-08019 Barcelona, Spain
37.Inst Estudis Espacials Catalunya, C Gran Capita 2-4,Ed Nexus 201, E-08034 Barcelona, Spain
38.Chinese Culture Univ, Dept Optoelect Phys, Taipei 11114, Taiwan
39.Hungarian Astron Assoc, Polaris Observ, Laborc U 2-C, H-1037 Budapest, Hungary
40.Ohio State Univ, Dept Astron, 140 West 18th Ave, Columbus, OH 43210 USA
41.Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA
42.Botswana Int Univ Sci & Technol, Off Vice Chancellor, Private Bag 16, Palapye, Botswana
43.Univ Manchester, Jodrell Bank, Ctr Astrophys, Alan Turing Bldg, Manchester M13 9PL, Lancs, England
44.Univ Aveiro, Dept Fis, CIDMA, Campus Santiago, P-3810193 Aveiro, Portugal
45.Inst Telecomunicacoes, Campus Santiago, P-3810193 Aveiro, Portugal
46.Botswana Int Univ Sci & Technol, Dept Phys & Astron, Private Bag 16, Palapye, Botswana
47.Amer Museum Nat Hist, 79th St & Cent Pk West, New York, NY 10024 USA
48.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA
49.Univ Minnesota, Minnesota Inst Astrophys, 116 Church St SE, Minneapolis, MN 55455 USA
Recommended Citation
GB/T 7714
Henze, M.,Darnley, M. J.,Williams, S. C.,et al. Breaking the Habit: The Peculiar 2016 Eruption of the Unique Recurrent Nova M31N 2008-12a[J]. ASTROPHYSICAL JOURNAL,2018,857(1):68.
APA Henze, M..,Darnley, M. J..,Williams, S. C..,Kato, M..,Hachisu, I..,...&Woodward, C. E..(2018).Breaking the Habit: The Peculiar 2016 Eruption of the Unique Recurrent Nova M31N 2008-12a.ASTROPHYSICAL JOURNAL,857(1),68.
MLA Henze, M.,et al."Breaking the Habit: The Peculiar 2016 Eruption of the Unique Recurrent Nova M31N 2008-12a".ASTROPHYSICAL JOURNAL 857.1(2018):68.
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