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SN 2003du: 480 days...
SN 2003du: 480 days in the life of a normal type Ia supernova
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- Stanishev, Vallery (author)
- Stockholms universitet,Fysikum
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- Goobar, Ariel (author)
- Stockholms universitet,Fysikum
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Benetti, S (author)
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Kotak, Rubina (author)
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Pignata, G (author)
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Navasardyan, H (author)
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Mazzali, P (author)
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- Ahmanullah, Rahman (author)
- Stockholms universitet,Fysikum
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- Garavini, Gabriele (author)
- Stockholms universitet,Fysikum
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- Nobili, Serena (author)
- Stockholms universitet,Fysikum
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Qiu, Y (author)
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Elias-Rosa, N (author)
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Ruiz-Lapuente, P (author)
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Mendez, J (author)
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Meikle, Peter (author)
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Patat, F (author)
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Pastorello, A (author)
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Altavilla, G (author)
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Gustafsson, M (author)
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Harutyunyan, A (author)
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Ijima, T (author)
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Jakobsson, P (author)
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Kichizhieva, M. V. (author)
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- Lundqvist, Peter (author)
- Stockholms universitet,Institutionen för astronomi
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Mattila, Seppo (author)
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- Melinder, Jens (author)
- Stockholms universitet,Institutionen för astronomi
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Pavlenko, E. P. (author)
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Pavlyuk, N. N. (author)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi
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Tsvetkov, D. Yu. (author)
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Turatto, M (author)
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Hillebrandt, Wolfgang (author)
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(creator_code:org_t)
- 2007-04-24
- 2007
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 469:2, s. 645-661
- Related links:
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Aims.We present a study of the optical and near-infrared (NIR) properties of the Type Ia Supernova (SN Ia) 2003du.Methods: An extensive set of optical and NIR photometry and low-resolution long-slit spectra was obtained using a number of facilities. The observations started 13 days before B-band maximum light and continued for 480 days with exceptionally good time sampling. The optical photometry was calibrated through the S-correction technique.Results: The {UBVRIJHK} light curves and the color indices of SN 2003du closely resemble those of normal SNe Ia. SN 2003du reached a B-band maximum of 13.49 ± 0.02 mag on JD2 452 766.38 ± 0.5. We derive a B-band stretch parameter of 0.988 ±0.003, which corresponds to Δ m15=1.02 ±0.05, indicative of a SN Ia of standard luminosity. The reddening in the host galaxy was estimated by three methods, and was consistently found to be negligible. Using an updated calibration of the V and {JHK} absolute magnitudes of SNe Ia, we find a distance modulus μ=32.79±0.15 mag to the host galaxy, UGC 9391. We measure a peak {uvoir} bolometric luminosity of 1.35(±0.20)×1043 erg s-1 and Arnett's rule implies that M56Ni≃0.68 ±0.14 Mȯ of 56Ni was synthesized during the explosion. Modeling of the {uvoir} bolometric light curve also indicates M56Ni in the range 0.6-0.8 Mȯ. The spectral evolution of SN 2003du at both optical and NIR wavelengths also closely resembles normal SNe Ia. In particular, the Si II ratio at maximum R(Si II) = 0.22 ±0.02 and the time evolution of the blueshift velocities of the absorption line minima are typical. The pre-maximum spectra of SN 2003du showed conspicuous high-velocity features in the Ca II H&K doublet and infrared triplet, and possibly in Si II λ6355, lines. We compare the time evolution of the profiles of these lines with other well-observed SNe Ia and we suggest that the peculiar pre-maximum evolution of Si II λ6355 line in many SNe Ia is due to the presence of two blended absorption components.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- stars: supernovae: general
- stars: supernovae: individual: SN 2003du
- methods: observational
- techniques: photometric
- techniques: spectroscopic
- Formation and development of stars
- Stjärnors bildning och utveckling
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Stanishev, Valle ...
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Goobar, Ariel
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Benetti, S
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Kotak, Rubina
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Pignata, G
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Navasardyan, H
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show more...
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Mazzali, P
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Ahmanullah, Rahm ...
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Garavini, Gabrie ...
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Nobili, Serena
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Qiu, Y
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Elias-Rosa, N
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Ruiz-Lapuente, P
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Mendez, J
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Meikle, Peter
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Patat, F
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Pastorello, A
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Altavilla, G
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Gustafsson, M
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Harutyunyan, A
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Ijima, T
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Jakobsson, P
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Kichizhieva, M. ...
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Lundqvist, Peter
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Mattila, Seppo
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Melinder, Jens
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Pavlenko, E. P.
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Pavlyuk, N. N.
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Sollerman, Jespe ...
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Tsvetkov, D. Yu.
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Turatto, M
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Hillebrandt, Wol ...
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Stockholm University