| Title | Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the Kepler 2 Observations |
| Authors | Li, W. Wang, X. Vinko, J. Mo, J. Hosseinzadeh, G. Sand, D. J. Zhang, J. Lin, H. Zhang, T. Wang, L. Zhang, J. Chen, Z. Xiang, D. Rui, L. Huang, F. Li, X. Zhang, X. Li, L. Baron, E. Derkacy, J. M. Zhao, X. Sai, H. Zhang, K. Wang, L. Howell, D. A. McCully, C. Arcavi, I. Valenti, S. Hiramatsu, D. Burke, J. Rest, A. Garnavich, P. Tucker, B. E. Narayan, G. Shaya, E. Margheim, S. Zenteno, A. Villar, A. Dimitriadis, G. Foley, R. J. Pan, Y. -C. Coulter, D. A. Fox, O. D. Jha, S. W. Jones, D. O. Kasen, D. N. Kilpatrick, C. D. Piro, A. L. Riess, A. G. Rojas-Bravo, C. Shappee, B. J. Holoien, T. W. -S. Stanek, K. Z. Drout, M. R. Auchettl, K. Kochanek, C. S. Brown, J. S. Bose, S. Bersier, D. Brimacombe, J. Chen, P. Dong, S. Holmbo, S. Munoz, J. A. Mutel, R. L. Post, R. S. Prieto, J. L. Shields, J. Tallon, D. Thompson, T. A. Vallely, P. J. Villanueva, S., Jr. Smartt, S. J. Smith, K. W. Chambers, K. C. Flewelling, H. A. Huber, M. E. Magnier, E. A. Waters, C. Z. Schultz, A. S. B. Bulger, J. Lowe, T. B. Willman, M. Sarneczky, K. Pal, A. Wheeler, J. C. Bodi, A. Bognar, Zs. Csak, B. Cseh, B. Csornyei, G. Hanyecz, O. Ignacz, B. Kalup, Cs. Konyves-Toth, R. Kriskovics, L. Ordasi, A. Rajmon, I. Sodor, A. Szabo, R. Szakats, R. Zsidi, G. Milne, P. Andrews, J. E. Smith, N. Bilinski, C. Brown, P. J. Nordin, J. Williams, S. C. Galbany, L. Palmerio, J. Hook, I. M. Inserra, C. Maguire, K. Cartier, Regis Razza, A. Gutierrez, C. P. Hermes, J. J. Reding, J. S. Kaiser, B. C. Tonry, J. L. Heinze, A. N. Denneau, L. Weiland, H. Stalder, B. Barentsen, G. Dotson, J. Barclay, T. Gully-Santiago, M. Hedges, C. Cody, A. M. Howell, S. Coughlin, J. Van Cleve, J. E. Vinicius de Miranda Cardoso, J. Larson, K. A. McCalmont-Everton, K. M. Peterson, C. A. Ross, S. E. Reedy, L. H. Osborne, D. McGinn, C. Kohnert, L. Migliorini, L. Wheaton, A. Spencer, B. Labonde, C. Castillo, G. Beerman, G. Steward, K. Hanley, M. Larsen, R. Gangopadhyay, R. Kloetzel, R. Weschler, T. Nystrom, V. Moffatt, J. Redick, M. Griest, K. Packard, M. Muszynski, M. Kampmeier, J. Bjella, R. Flynn, S. Elsaesser, B. |
| Affiliation | Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing 100084, Peoples R China Las Cumbres Observ, 6740 Cortona Dr Ste 102, Goleta, CA 93117 USA Konkoly Observ Budapest, MTA CSFK, Konkoly Thege M Ut 15-17, H-1121 Budapest, Hungary Univ Szeged, Dept Opt & Quantum Elect, Dom Ter 9, H-6720 Szeged, Hungary Univ Texas Austin, Dept Astron, RLM 15308, Austin, TX 78712 USA Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA Univ Arizona, Steward Observ, 933 North Cherry Ave,Rm N204, Tucson, AZ 85721 USA Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650216, Yunnan, Peoples R China Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China Chinese Acad Sci, Natl Astron Observ China, Beijing 100012, Peoples R China Chinese Acad Sci, Purple Mt Observ, Nanjing 210034, Jiangsu, Peoples R China Texas A&M Univ, Dept Phys & Astron, George P & Cynthia Woods Mitchell Inst Fundamenta, 4242 TAMU, College Stn, TX 77843 USA Shanghai Jiao Tong Univ, Sch Phys & Astron, Dept Astron, Shanghai 200240, Peoples R China Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA Tianjin Univ Technol, Sch Sci, Tianjin 300384, Peoples R China Chinese Acad Sci South Amer Ctr Astron, China Chile Joint Ctr Astron, Camino El Observ 1515, Santiago, Chile Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel Univ Calif Davis, Dept Phys, Davis, CA 95616 USA Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA Univ Notre Dame, Dept Phys, 225 Nieuwland Sci Hall, Notre Dame, IN 46556 USA Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Canberra, ACT 2611, Australia Australian Natl Univ, Natl Ctr Publ Awareness Sci, Canberra, ACT 2611, Australia ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Bentley, WA, Australia Univ Maryland, Dept Astron, College Pk, MD 20742 USA Care Of AURA, Southern Operat Ctr, Gemini Observ, Casilla 603, La Serena, Chile Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA State Univ New Jersey, Rutgers, Dept Phys & Astron, 136 Frelinghuysen Rd, Piscataway, NJ 08854 USA Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA Observ Carnegie Inst Sci, 813 Santa Barbara St, Pasadena, CA 91101 USA Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA Ohio State Univ, Ctr Cosmol & AstroParticle Phys CCAPP, 191 W Woodruff Ave, Columbus, OH 43210 USA Ohio State Univ, Dept Astron, 140 West 18th Ave, Columbus, OH 43210 USA Ohio State Univ, Dept Phys, 191 W Woodruff Ave, Columbus, OH 43210 USA Peking Univ, Kavli Inst Astron & Astrophys, Yi He Yuan Rd 5, Beijing 100871, Peoples R China Liverpool John Moores Univ, Astrophys Res Inst, 146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England Coral Towers Observ, Cairns, Qld 4870, Australia Aarhus Univ, Dept Phys & Astron, Ny Munkegade 120, DK-8000 Aarhus C, Denmark Univ Valencia, Dept Astron & Astrofis, E-46100 Valencia, Spain Univ Valencia, Observ Astron, E-46980 Valencia, Spain Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA Post Observ, Lexington, MA 02421 USA Univ Diego Portales, Nucleo Astron Fac Ingn, Av Ejercito 441, Santiago, Chile Millennium Inst Astrophys, Santiago, Chile Queens Univ Belfast, Sch Math & Phys, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland Queens Univ Belfast, Belfast BT7 1NN, Antrim, North Ireland Univ Hawaii Manoa, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA MTA CSFK Lendulet Near Field Cosmol Res Grp, Budapest, Hungary Univ Texas Austin, Dept Astron, RLM 15308, Austin, TX 78712 USA Berzsenyi Daniel High Sch, Karpat Utca 49-53, H-1133 Budapest, Hungary Texas A&M Univ, Dept Phys & Astron, 4242 TAMU, College Stn, TX 77843 USA Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany Univ Lancaster, Phys Dept, Lancaster LA1 4YB, England Univ Pittsburgh, Dept Phys & Astron, PITT PACC, Pittsburgh, PA 15260 USA Univ Paris 06, Sorbonne Univ, UPMC, 98 Bis Bd Arago, F-75014 Paris, France CNRS, UMR 7095, Inst Astrophys Paris, 98 Bis Bd Arago, F-75014 Paris, France Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England Queens Univ Belfast, Sch Math & Phys, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland Cerro Tololo Interamer Observ, Natl Opt Astron Observ, Casilla 603, La Serena, Chile European Southern Observ, Alonso Cordova 3107,Casilla 19, Santiago, Chile Univ Chile, Dept Astron, Camino El Observ 1515, Santiago, Chile Univ Southampton, Southampton SO17 1BJ, Hants, England Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA LSST, 950 North Cherry Ave, Tucson, AZ 85719 USA NASA, Ames Res Ctr, Moffett Blvd, Mountain View, CA 94035 USA Bay Area Environm Res Inst, POB 25, Moffett Field, CA 94035 USA NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA Univ Maryland Baltimore Cty, 1000 Hilltop Cir, Baltimore, MD 21250 USA NASA, Ames Res Ctr, Moffett Field, CA 94035 USA SETI Inst, 189 Bernardo Ave, Mountain View, CA 94043 USA Univ Fed Campina Grande, Campina Grande, Brazil Ball Aerosp & Technol Corp, Boulder, CO 80301 USA Univ Colorado, LASP, Boulder, CO 80303 USA |
| Keywords | supernovae: general supernovae: individual (SN 2018oh) |
| Issue Date | 2019 |
| Publisher | ASTROPHYSICAL JOURNAL |
| Abstract | Supernova (SN) 2018oh (ASASSN-18bt) is the first spectroscopically confirmed Type Ia supernova (SN Ia) observed in the Kepler field. The Kepler data revealed an excess emission in its early light curve, allowing us to place interesting constraints on its progenitor system. Here we present extensive optical, ultraviolet, and nearinfrared photometry, as well as dense sampling of optical spectra, for this object. SN 2018oh is relatively normal in its photometric evolution, with a rise time of 18.3 +/- 0.3 days and Delta m(15)(B) = 0.96 +/- 0.03 mag, but it seems to have bluer B - V colors. We construct the "UVOIR" bolometric light curve having a peak luminosity of 1.49. x. 10(43) erg s(-1), from which we derive a nickel mass as 0.55 +/- 0.04M(circle dot) by fitting radiation diffusion models powered by centrally located Ni-56. Note that the moment when nickel-powered luminosity starts to emerge is + 3.85 days after the first light in the Kepler data, suggesting other origins of the early-time emission, e. g., mixing of Ni-56 to outer layers of the ejecta or interaction between the ejecta and nearby circumstellar material or a nondegenerate companion star. The spectral evolution of SN 2018oh is similar to that of a normal SN Ia but is characterized by prominent and persistent carbon absorption features. The C. II features can be detected from the early phases to about 3 weeks after the maximum light, representing the latest detection of carbon ever recorded in an SN Ia. This indicates that a considerable amount of unburned carbon exists in the ejecta of SN 2018oh and may mix into deeper layers. |
| URI | http://hdl.handle.net/20.500.11897/552342 |
| ISSN | 0004-637X |
| DOI | 10.3847/1538-4357/aaec74 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 科维理天文与天体物理研究所 |
