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Titolo:
An early-time infrared and optical study of the Type Ia Supernova 1998bu in M96
Autore:
Hernandez, M; Meikle, WPS; Aparicio, A; Benn, CR; Burleigh, MR; Chrysostomou, AC; Fernandes, AJL; Geballe, TR; Hammersley, PL; Iglesias-Paramo, J; James, DJ; James, PA; Kemp, SN; Lister, TA; Martinez-Delgado, D; Oscoz, A; Pollacco, DL; Rozas, M; Smartt, SJ; Sorensen, P; Swaters, RA; Telting, JH; Vacca, WD; Walton, NA; Zapatero-Osorio, MR;
Indirizzi:
Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, London SW7 2BZ, England Univ London Imperial Coll Sci Technol & Med London England SW7 2BZ gland Inst Astrofis Canarias, Tenerife 38200, Spain Inst Astrofis Canarias Tenerife Spain 38200 arias, Tenerife 38200, Spain Univ La Laguna, Dept Astrofis, Tenerife, Spain Univ La Laguna Tenerife Spain La Laguna, Dept Astrofis, Tenerife, Spain Isaac Newton Grp, Santa Cruz de La Palma 38700, Islas Canarias, Spain Isaac Newton Grp Santa Cruz de La Palma Islas Canarias Spain 38700 Spain Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England UnivLeicester Leicester Leics England LE1 7RH er LE1 7RH, Leics, England Joint Astron Ctr, Hilo, HI 96720 USA Joint Astron Ctr Hilo HI USA 96720Joint Astron Ctr, Hilo, HI 96720 USA Univ Porto, Ctr Astrophys, P-4150762 Porto, Portugal Univ Porto Porto Portugal P-4150762 Astrophys, P-4150762 Porto, Portugal Gemini Observ, Hilo, HI 96720 USA Gemini Observ Hilo HI USA 96720Gemini Observ, Hilo, HI 96720 USA Univ St Andrews, Dept Phys & Astron, St Andrews KY16 9SS, Fife, Scotland Univ St Andrews St Andrews Fife Scotland KY16 9SS Y16 9SS, Fife, Scotland Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead L41 1LD, Merseyside, England Liverpool John Moores Univ Birkenhead Merseyside England L411LD England Inst Astron & Meteorol, Guadalajara, Jalisco, Mexico Inst Astron & Meteorol Guadalajara Jalisco Mexico ajara, Jalisco, Mexico Queens Univ Belfast, Astrophys & Planetary Sci Div, Belfast BT7 1NN, Antrim, North Ireland Queens Univ Belfast Belfast Antrim North Ireland BT7 1NN m, North Ireland Rijksuniv Groningen, Kapteyn Inst, NL-9700 AV Groningen, Netherlands Rijksuniv Groningen Groningen Netherlands NL-9700 AV ningen, Netherlands IRTF, Inst Astron, Honolulu, HI 96822 USA IRTF Honolulu HI USA 96822IRTF, Inst Astron, Honolulu, HI 96822 USA Univ Cambridge, IoA, Cambridge CB3 0HA, England Univ Cambridge CambridgeEngland CB3 0HA IoA, Cambridge CB3 0HA, England
Titolo Testata:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
fascicolo: 1, volume: 319, anno: 2000,
pagine: 223 - 234
SICI:
0035-8711(20001121)319:1<223:AEIAOS>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUBBLE CONSTANT; LIGHT CURVES; STANDARD STARS; DISTANCE; SPECTROSCOPY; SPECTRA; 1991T;
Keywords:
supernovae : individual : SN 1998bu;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
49
Recensione:
Indirizzi per estratti:
Indirizzo: Hernandez, M Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, Prince Consort Rd, London SW7 2BZ, England Univ London Imperial Coll Sci Technol & Med Prince Consort Rd London England SW7 2BZ
Citazione:
M. Hernandez et al., "An early-time infrared and optical study of the Type Ia Supernova 1998bu in M96", M NOT R AST, 319(1), 2000, pp. 223-234

Abstract

We present first-season infrared (IR) and optical photometry and spectroscopy of the Type Ia Supernova 1998bu in M96. We also report optical polarimetry of this event. SN 1998bu is one of the closest type Ia supernovae of modern times, and the distance of its host galaxy is well determined. We findthat SN 1998bu is both photometrically and spectroscopically normal. However, the extinction to this event is unusually high, with A(V) = 1.0 +/- 0.11. We find that SN 1998bu peaked at an intrinsic M-V = -19.37 +/- 0.23. Adopting a distance modulus of 30.25 (Tanvir et al.) and using Phillips et al.'s relations for the Hubble constant, we obtain H-0 = 70.4 +/- 4.3 km s(-1)Mpc(-1). Combination of our IR photometry with those of Jha et al. provides one of the most complete early-phase IR light curves for a SN Ia published so far. In particular, SN 1998bu is the first normal SN Ia for which goodpre-t(Bmax) IR coverage has been obtained. It reveals that the J, H and K light curves peak about 5 days earlier than the flux in the B-band curve.

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Documento generato il 28/01/20 alle ore 14:41:32