Early Observations And Analysis Of The Type Ia SN 2014J In M82

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dc.contributor.utaustinauthorMarion, G. H.en_US
dc.contributor.utaustinauthorVinko, Jozsefen_US
dc.contributor.utaustinauthorSilverman, Jeffrey M.en_US
dc.contributor.utaustinauthorWheeler, J. Craigen_US
dc.creatorMarion, G. H.en_US
dc.creatorSand, D. J.en_US
dc.creatorHsiao, Eric Y.en_US
dc.creatorBanerjee, D. P. K.en_US
dc.creatorValenti, S.en_US
dc.creatorStritzinger, Maximillian D.en_US
dc.creatorVinko, Jozsefen_US
dc.creatorJoshi, V.en_US
dc.creatorVenkataraman, V.en_US
dc.creatorAshok, N. M.en_US
dc.creatorAmanullah, R.en_US
dc.creatorBinzel, R. P.en_US
dc.creatorBochanski, J. J.en_US
dc.creatorBryngelson, G. L.en_US
dc.creatorBurns, Christopher R.en_US
dc.creatorDrozdov, D.en_US
dc.creatorFieber-Beyer, S. K.en_US
dc.creatorGraham, M. L.en_US
dc.creatorHowell, D. Andrewen_US
dc.creatorJohansson, J.en_US
dc.creatorKirshner, Robert P.en_US
dc.creatorMilne, P. A.en_US
dc.creatorParrent, J.en_US
dc.creatorSilverman, Jeffrey M.en_US
dc.creatorVervack Jr, R. J.en_US
dc.creatorWheeler, J. Craigen_US
dc.date.accessioned2016-04-28T19:40:07Z
dc.date.available2016-04-28T19:40:07Z
dc.date.issued2015-01en
dc.description.abstractWe present optical and near infrared (NIR) observations of the nearby Type Ia SN 2014J. Seventeen optical and 23 NIR spectra were obtained from 10 days before (-10d) to 10 days after (+10d) the time of maximum B-band brightness. The relative strengths of absorption features and their patterns of development can be compared at one day intervals throughout most of this period. Carbon is not detected in the optical spectra, but we identify C I lambda 1.0693 in the NIR spectra. Mg II lines with high oscillator strengths have higher initial velocities than other Mg II lines. We show that the velocity differences can be explained by differences in optical depths due to oscillator strengths. The spectra of SN 2014J show that it is a normal SN Ia, but many parameters are near the boundaries between normal and high-velocity subclasses. The velocities for OI, Mg II, Si II, S Ca a, and Fell suggest that SN 2014J has a layered structure with little or no mixing. That result is consistent with the delayed detonation explosion models. We also report photometric observations, obtained from -10d to +29d, in the UBVRIJH and K-s bands. The template fitting package SNooPy is used to interpret the light curves and to derive photometric parameters. Using R-v = 1.46, which is consistent with previous studies, SNooPy finds that A(v) = 1.80 for E(B - V)(host) = 1.23 +/- 0.06 mag. The maximum B-band brightness of -19.19 +/- 0.10 mag was reached on February 1.74 UT +/- 0.13 days and the supernova has a decline parameter, Delta m(15), of 1.12 +/- 0.02 mag.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipDepartment of Space, Government of Indiaen_US
dc.description.sponsorshipHungarian OTKA NN-107637en_US
dc.description.sponsorshipNSF AST-1109801, AST-1151462, AST-1211196en_US
dc.description.sponsorshipNSF Astronomy and Astrophysics Postdoctoral Fellowship AST-1302771en_US
dc.description.sponsorshipNASA through a grant from the Space Telescope Science Institute GO-12540en_US
dc.description.sponsorshipNASA NAS5-26555en_US
dc.description.sponsorshipSwedish Research Councilen_US
dc.description.sponsorshipSwedish National Space Boarden_US
dc.description.sponsorshipDanish Agency for Science and Technology and Innovation realized through a Sapere Aude Level 2 granten_US
dc.identifierdoi:10.15781/T2SR7F
dc.identifier.Filename2015_01_iasn2014j.pdfen_US
dc.identifier.citationMarion, G. H., D. J. Sand, E. Y. Hsiao, D. P. K. Banerjee, S. Valenti, M. D. Stritzinger, J. Vink� et al. "Early Observations and Analysis of the Type Ia SN 2014J in M82." The Astrophysical Journal, Vol. 798, No. 1 (Jan., 2015): 39.en_US
dc.identifier.doi10.1088/0004-637x/798/1/39en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/35068
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journalen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectinfrared: generalen_US
dc.subjectsupernovae: generalen_US
dc.subjectsupernovae: individual (2014j)en_US
dc.subjecthubble-space-telescopeen_US
dc.subjectnear-infrared spectraen_US
dc.subjectlight-curveen_US
dc.subjectsupernovaen_US
dc.subjectspectraen_US
dc.subjectmaximum lighten_US
dc.subjecttimeen_US
dc.subjectconstanten_US
dc.subjectspectroscopyen_US
dc.subjectspectrographen_US
dc.subjectultravioleten_US
dc.subjectastronomy & astrophysicsen_US
dc.titleEarly Observations And Analysis Of The Type Ia SN 2014J In M82en_US
dc.typeArticleen_US

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