SN. 2012cg: EVIDENCE FOR INTERACTION BETWEEN A NORMAL SN Ia AND A NON-DEGENERATE BINARY COMPANION

被引：116

作者：

Marion, G. H. ^{[1
,2
]}

Brown, Peter J. ^{[3
]}

Vinko, Jozsef ^{[1
,4
]}

Silverman, Jeffrey M. ^{[1
]}

Sand, David J. ^{[5
]}

Challis, Peter ^{[2
]}

Kirshner, Robert P. ^{[2
]}

Wheeler, J. Craig ^{[1
]}

Berlind, Perry ^{[2
]}

Brown, Warren R. ^{[2
]}

Calkins, Michael L. ^{[2
]}

Camacho, Yssavo ^{[6
,7
]}

Dhungana, Govinda ^{[8
]}

Foley, Ryan J. ^{[9
,10
]}

Friedman, Andrew S. ^{[2
,11
,12
]}

Graham, Melissa L. ^{[13
]}

Howell, D. Andrew ^{[14
,15
]}

Hsiao, Eric Y. ^{[16
,17
]}

Irwin, Jonathan M. ^{[2
]}

Jha, Saurabh W. ^{[6
]}

Kehoe, Robert ^{[8
]}

Macri, Lucas M. ^{[3
]}

Maeda, Keiichi ^{[18
,21
]}

Mandel, Kaisey ^{[2
]}

McCully, Curtis ^{[14
]}

Pandya, Viraj ^{[6
,19
]}

Rines, Kenneth J. ^{[20
]}

Wilhelmy, Steven ^{[20
]}

Zheng, Weikang ^{[13
]}

机构：

[1] Univ Texas Austin, 1 Univ Stn C1400, Austin, TX 78712 USA

[2] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[3] Texas A&M Univ, Dept Phys & Astron, George P & Cynthia Woods Mitchell Inst Fundamenta, 4242 TAMU, College Stn, TX 77843 USA

[4] Univ Szeged, Dept Opt & Quantum Elect, Domter 9, H-6720 Szeged, Hungary

[5] Texas Tech Univ, Dept Phys, Lubbock, TX 79409 USA

[6] Rutgers State Univ, Dept Phys & Astron, 136 Frelinghuysen Rd, Piscataway, NJ 08854 USA

[7] Lehigh Univ, Dept Phys, 16 Mem Dr East, Bethlehem, PA 18015 USA

[8] So Methodist Univ, Dept Phys, Dallas, TX 75275 USA

[9] Univ Illinois, Dept Astron, 1002 W Green St, Urbana, IL 61801 USA

[10] Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA

[11] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA

[12] MIT, Dept Phys, Cambridge, MA 02139 USA

[13] Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA

[14] Las Cumbres Observ Global Telescope Network, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA

[15] Univ Calif Santa Barbara, Dept Phys, Broida Hall,Mail Code 9530, Santa Barbara, CA 93106 USA

[16] Las Campanas Observ, Carnegie Observ, Casilla 601, Colina El Pino, Chile

[17] Aarhus Univ, Dept Phys & Astron, Ny Munkegade 120, DK-8000 Aarhus C, Denmark

[18] Kyoto Univ, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan

[19] Princeton Univ, Dept Astrophys Sci, Peyton Hall, Princeton, NJ 08544 USA

[20] Western Washington Univ, Dept Phys & Astron, 516 High St, Bellingham, WA 98225 USA

[21] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan

来源：

ASTROPHYSICAL JOURNAL | 2016年 / 820卷 / 02期

基金：

美国国家科学基金会;

关键词：

supernovae: general; supernovae: individual (2012cg); OBSERVATORY SUPERNOVA SEARCH; HIGH-VELOCITY FEATURES; LIGHT CURVES; CIRCUMSTELLAR MATERIAL; PHOTOMETRY PROGRAM; SODIUM-ABSORPTION; PROGENITORS; ULTRAVIOLET; 2011FE; SWIFT;

D O I：

10.3847/0004-637X/820/2/92

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report evidence for excess blue light from the Type Ia supernova (Sn Ia) SN. 2012cg at 15 and 16 days before maximum B-band brightness. The emission is consistent with predictions for the impact of the supernova on a non-degenerate binary companion. This is the first evidence for emission from a companion to a normal SN. Ia. Sixteen days before maximum light, the B - V color of SN. 2012cg is 0.2 mag bluer than for other normal SN. Ia. At later times, this supernova has a typical SN. Ia light curve, with extinction-corrected MB = -19.62 +/- 0.02 mag and Delta m(15)(B)= 0.86 +/- 0.02. Our data set is extensive, with photometry in seven filters from five independent sources. Early spectra also show the effects of blue light, and high-velocity features are observed at early times. Near maximum, the spectra are normal with a silicon velocity v(Si) = -10,500 km s(-1). Comparing the early data with models by Kasen favors a main-sequence companion of about six solar masses. It is possible that many other SN Ia have main-sequence companions that have eluded detection because the emission from the impact is fleeting and faint.

引用

页数：16

共 95 条

[21] Cutri R. M., 2003, IRSA 2MASS ALL SKY P
[22] Constraints on the explosion mechanism and progenitors of Type Ia supernovae
Dessart, Luc
Blondin, Stephane
Hillier, D. John
Khokhlov, Alexei
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 441 (01) : 532 - 550
[23] PTF 11kx: A Type Ia Supernova with a Symbiotic Nova Progenitor
Dilday, B.
Howell, D. A.
Cenko, S. B.
Silverman, J. M.
Nugent, P. E.
Sullivan, M.
Ben-Ami, S.
Bildsten, L.
Bolte, M.
Endl, M.
Filippenko, A. V.
Gnat, O.
Horesh, A.
Hsiao, E.
Kasliwal, M. M.
Kirkman, D.
Maguire, K.
Marcy, G. W.
Moore, K.
Pan, Y.
Parrent, J. T.
Podsiadlowski, P.
Quimby, R. M.
Sternberg, A.
Suzuki, N.
Tytler, D. R.
Xu, D.
Bloom, J. S.
Gal-Yam, A.
Hook, I. M.
Kulkarni, S. R.
Law, N. M.
Ofek, E. O.
Polishook, D.
Poznanski, D.
[J]. SCIENCE, 2012, 337 (6097) : 942 - 945
[24] The FAST spectrograph for the Tillinghast telescope
Fabricant, D
Cheimets, P
Caldwell, N
Geary, J
[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1998, 110 (743) : 79 - 85
[25] Filippenko AV, 2001, ASTR SOC P, V246, P121
[26] Correcting for the effects of interstellar extinction
Fitzpatrick, EL
[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1999, 111 (755) : 63 - 75
[27] On spectral line profiles in Type Ia supernova spectra
Foley, Ryan J.
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 435 (01) : 273 - 288
[28] LINKING TYPE Ia SUPERNOVA PROGENITORS AND THEIR RESULTING EXPLOSIONS
Foley, Ryan J.
Simon, Joshua D.
Burns, Christopher R.
Gal-Yam, Avishay
Hamuy, Mario
Kirshner, Robert P.
Morrell, Nidia I.
Phillips, Mark M.
Shields, Gregory A.
Sternberg, Assaf
[J]. ASTROPHYSICAL JOURNAL, 2012, 752 (02)
[29] VERY EARLY ULTRAVIOLET AND OPTICAL OBSERVATIONS OF THE TYPE Ia SUPERNOVA 2009ig
Foley, Ryan J.
Challis, P. J.
Filippenko, A. V.
Ganeshalingam, M.
Landsman, W.
Li, W.
Marion, G. H.
Silverman, J. M.
Beaton, R. L.
Bennert, V. N.
Cenko, S. B.
Childress, M.
Guhathakurta, P.
Jiang, L.
Kalirai, J. S.
Kirshner, R. P.
Stockton, A.
Tollerud, E. J.
Vinko, J.
Wheeler, J. C.
Woo, J. -H.
[J]. ASTROPHYSICAL JOURNAL, 2012, 744 (01)
[30] Friedman A. S., 2012, THESIS HARVARD U

← 1 2 3 4 5 6 7 8 9 10 →