Photometric and spectroscopic evolution of supernova SN 2009an: another case of a transitional Type Ia event

被引：8
|
作者：
Sahu, D. K. [1 ]
Anupama, G. C. [1 ]
Anto, P. [1 ]
机构：
[1] Indian Inst Astrophys, Bangalore 560034, Karnataka, India
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2013年 / 430卷 / 02期
基金：
美国国家航空航天局;
关键词：
techniques: photometric; techniques: spectroscopic; supernovae: general; supernovae: individual: SN 2009an; HUBBLE-SPACE-TELESCOPE; LIGHT CURVES; PRECISE DISTANCE; DECLINE RATE; ULTRAVIOLET; DIVERSITY; SPECTRA; SAMPLE; MAGNITUDES; PARAMETER;
D O I：
10.1093/mnras/sts609
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present optical UBVRI photometry and medium-resolution spectroscopy of a transitional Type Ia supernova, SN 2009an, over the period -6 to similar to+ 150 d from the B maximum. With a Delta m(15)(B) = 1.514 +/- 0.132, SN 2009an declines faster than normal Type Ia events, but slower than the fast-declining, low-luminosity 1991bg-like events. The B-band absolute magnitude at maximum is -19.02 +/- 0.20. The peak bolometric luminosity indicates that 0.41 M-circle dot of Ni-56 was synthesized during the explosion. The pre-maximum and early post-maximum spectral evolution of SN 2009an is very similar to that in the transitional Type Ia SN 2004eo. High-velocity features in the Ca II near-infrared triplet are seen during the early phases. Similar to the other few objects belonging to this class, SN 2009an exhibits a higher value (similar to 0.4) of the Si II line ratio R(Si II). The velocity gradient of the Si II 6355 angstrom line in the post-maximum epoch ((v) over dot = 60 km s(-1) d(-1)) is at the boundary between the low-velocity-gradient and high-velocity-gradient groups.
引用
收藏
页码：869 / 887
页数：19
相关论文
共 27 条
  • [21] The Type Ia supernova 2004s, a clone of SN 2001el, and the optimal photometric bands for extinction estimation
    Krisciunas, Kevin
    Garnavich, Peter M.
    Stanishev, Vallery
    Suntzeff, Nicholas B.
    Prieto, Jose Luis
    Espinoza, Juan
    Gonzalez, David
    Salvo, Maria Elena
    De la Rosa, Nancy Elias
    Smartt, Stephen J.
    Maund, Justyn R.
    Kudritzki, Rolf-Peter
    ASTRONOMICAL JOURNAL, 2007, 133 (01): : 58 - 72
  • [22] Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the Kepler 2 Observations
    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.
    ASTROPHYSICAL JOURNAL, 2019, 870 (01):
  • [23] Spectroscopic analysis of the strongly lensed SN Encore: constraints on cosmic evolution of Type Ia supernovae
    Dhawan, S.
    Pierel, J. D. R.
    Gu, M.
    Newman, A. B.
    Larison, C.
    Siebert, M.
    Petrushevska, T.
    Poidevin, F.
    Jha, S. W.
    Chen, W.
    Ellis, Richard S.
    Frye, B.
    Hjorth, J.
    Koekemoer, Anton M.
    Perez-Fournon, I
    Rest, A.
    Treu, T.
    Windhorst, R. A.
    Zenati, Y.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2024, 535 (04) : 2939 - 2947
  • [24] An Empirical Fitting Method for Type Ia Supernova Light Curves: A Case Study of SN 2011fe
    Zheng, WeiKang
    Filippenko, Alexei V.
    ASTROPHYSICAL JOURNAL LETTERS, 2017, 838 (01)
  • [25] SN 2014J at M82-I. A middle-class Type Ia supernova by all spectroscopic metrics
    Galbany, L.
    Moreno-Raya, M. E.
    Ruiz-Lapuente, P.
    Gonzalez Hernandez, J. I.
    Mendez, J.
    Vallely, P.
    Baron, E.
    Dominguez, I.
    Hamuy, M.
    Lopez-Sanchez, A. R.
    Molla, M.
    Catalan, S.
    Cooke, E. A.
    Farina, C.
    Genova-Santos, R.
    Karjalainen, R.
    Lietzen, H.
    McCormac, J.
    Riddick, F. C.
    Rubino-Martin, J. A.
    Skillen, I.
    Tudor, V.
    Vaduvescu, O.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 457 (01) : 525 - 537
  • [26] SPECTROSCOPIC OBSERVATIONS OF SN 2012fr: A LUMINOUS, NORMAL TYPE Ia SUPERNOVA WITH EARLY HIGH-VELOCITY FEATURES AND A LATE VELOCITY PLATEAU
    Childress, M. J.
    Scalzo, R. A.
    Sim, S. A.
    Tucker, B. E.
    Yuan, F.
    Schmidt, B. P.
    Cenko, S. B.
    Silverman, J. M.
    Contreras, C.
    Hsiao, E. Y.
    Phillips, M.
    Morrell, N.
    Jha, S. W.
    McCully, C.
    Filippenko, A. V.
    Anderson, J. P.
    Benetti, S.
    Bufano, F.
    de Jaeger, T.
    Forster, F.
    Gal-Yam, A.
    Le Guillou, L.
    Maguire, K.
    Maund, J.
    Mazzali, P. A.
    Pignata, G.
    Smartt, S.
    Spyromilio, J.
    Sullivan, M.
    Taddia, F.
    Valenti, S.
    Bayliss, D. D. R.
    Bessell, M.
    Blanc, G. A.
    Carson, D. J.
    Clubb, K. I.
    de Burgh-Day, C.
    Desjardins, T. D.
    Fang, J. J.
    Fox, O. D.
    Gates, E. L.
    Ho, I. -T.
    Keller, S.
    Kelly, P. L.
    Lidman, C.
    Loaring, N. S.
    Mould, J. R.
    Owers, M.
    Ozbilgen, S.
    Pei, L.
    ASTROPHYSICAL JOURNAL, 2013, 770 (01):
  • [27] A Second Case of Variable Na I D Lines in a Highly-reddened Type Ia Supernova (vol 693, pg 207, 2009)
    Blondin, Stephane
    Prieto, Jose L.
    Patat, Ferdinando
    Challis, Peter
    Hicken, Malcolm
    Kirshner, Robert P.
    Matheson, Thomas
    Modjaz, Maryam
    ASTROPHYSICAL JOURNAL, 2017, 844 (01):
123