SN 2002cv: A heavily obscured Type Ia supernova

N. Elias-Rosa; S. Benetti; M. Turatto; E. Cappellaro; S. Valenti; A. A. Arkharov; J. E. Beckman; A. Di Paola; M. Dolci; A. V. Filippenko; R. J. Foley; K. Krisciunas; V. M. Larionov; W. Li; W. P.S. Meikle; A. Pastorello; G. Valentini; W. Hillebrandt

doi:10.1111/j.1365-2966.2007.12638.x

SN 2002cv: A heavily obscured Type Ia supernova

N. Elias-Rosa, S. Benetti, M. Turatto, E. Cappellaro, S. Valenti, A. A. Arkharov, J. E. Beckman, A. Di Paola, M. Dolci, A. V. Filippenko, R. J. Foley, K. Krisciunas, V. M. Larionov, W. Li, W. P.S. Meikle, A. Pastorello, G. Valentini, W. Hillebrandt

Astronomy

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Abstract

We present VRIJHK photometry, and optical and near-infrared spectroscopy, of the heavily extinguished Type Ia supernova (SN Ia) 2002cv, located in NGC 3190, which is also the parent galaxy of the SN Ia 2002bo. SN 2002cv, not visible in the blue, has a total visual extinction of 8.74 ± 0.21 mag. In spite of this, we were able to obtain the light curves between -10 and +207 d from the maximum in the I band, and also to follow the spectral evolution, deriving its key parameters. We found the peak I-band brightness to be I _max = 16.57 ± 0.10 mag, the maximum absolute I magnitude to be M^max_I = -18.79 ± 0.20, and the parameter Δm₁₅(B) specifying the width of the B-band light curve to be 1.46 ± 0.17 mag. The latter was derived using the relations between this parameter and Δm₄₀(I) and the time-interval Δt _max(I) between the two maxima in the I-band light curve. As has been found for previously observed, highly extinguished SNe Ia, a small value of 1.59 ± 0.07 was obtained here for the ratio R_V of the total-to-selective extinction ratio for SN 2002cv, which implies a small mean size for the grains along the line of sight towards us. Since it was found for SN 2002bo a canonical value of 3.1, here we present a clear evidence of different dust properties inside NGC 3190.

Original language	English (US)
Pages (from-to)	107-122
Number of pages	16
Journal	Monthly Notices of the Royal Astronomical Society
Volume	384
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2966.2007.12638.x
State	Published - Feb 2008

Keywords

Dust, extinction
Supernovae: general
Supernovae: individual: SN 2002cv

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1111/j.1365-2966.2007.12638.x

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Elias-Rosa, N., Benetti, S., Turatto, M., Cappellaro, E., Valenti, S., Arkharov, A. A., Beckman, J. E., Di Paola, A., Dolci, M., Filippenko, A. V., Foley, R. J., Krisciunas, K., Larionov, V. M., Li, W., Meikle, W. P. S., Pastorello, A., Valentini, G., & Hillebrandt, W. (2008). SN 2002cv: A heavily obscured Type Ia supernova. Monthly Notices of the Royal Astronomical Society, 384(1), 107-122. https://doi.org/10.1111/j.1365-2966.2007.12638.x

Elias-Rosa, N, Benetti, S, Turatto, M, Cappellaro, E, Valenti, S, Arkharov, AA, Beckman, JE, Di Paola, A, Dolci, M, Filippenko, AV, Foley, RJ, Krisciunas, K, Larionov, VM, Li, W, Meikle, WPS, Pastorello, A, Valentini, G & Hillebrandt, W 2008, 'SN 2002cv: A heavily obscured Type Ia supernova', Monthly Notices of the Royal Astronomical Society, vol. 384, no. 1, pp. 107-122. https://doi.org/10.1111/j.1365-2966.2007.12638.x

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title = "SN 2002cv: A heavily obscured Type Ia supernova",

abstract = "We present VRIJHK photometry, and optical and near-infrared spectroscopy, of the heavily extinguished Type Ia supernova (SN Ia) 2002cv, located in NGC 3190, which is also the parent galaxy of the SN Ia 2002bo. SN 2002cv, not visible in the blue, has a total visual extinction of 8.74 ± 0.21 mag. In spite of this, we were able to obtain the light curves between -10 and +207 d from the maximum in the I band, and also to follow the spectral evolution, deriving its key parameters. We found the peak I-band brightness to be I max = 16.57 ± 0.10 mag, the maximum absolute I magnitude to be MmaxI = -18.79 ± 0.20, and the parameter Δm15(B) specifying the width of the B-band light curve to be 1.46 ± 0.17 mag. The latter was derived using the relations between this parameter and Δm40(I) and the time-interval Δt max(I) between the two maxima in the I-band light curve. As has been found for previously observed, highly extinguished SNe Ia, a small value of 1.59 ± 0.07 was obtained here for the ratio RV of the total-to-selective extinction ratio for SN 2002cv, which implies a small mean size for the grains along the line of sight towards us. Since it was found for SN 2002bo a canonical value of 3.1, here we present a clear evidence of different dust properties inside NGC 3190.",

keywords = "Dust, extinction, Supernovae: general, Supernovae: individual: SN 2002cv",

author = "N. Elias-Rosa and S. Benetti and M. Turatto and E. Cappellaro and S. Valenti and Arkharov, {A. A.} and Beckman, {J. E.} and {Di Paola}, A. and M. Dolci and Filippenko, {A. V.} and Foley, {R. J.} and K. Krisciunas and Larionov, {V. M.} and W. Li and Meikle, {W. P.S.} and A. Pastorello and G. Valentini and W. Hillebrandt",

year = "2008",

month = feb,

doi = "10.1111/j.1365-2966.2007.12638.x",

language = "English (US)",

volume = "384",

pages = "107--122",

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T1 - SN 2002cv

T2 - A heavily obscured Type Ia supernova

AU - Elias-Rosa, N.

AU - Benetti, S.

AU - Turatto, M.

AU - Cappellaro, E.

AU - Valenti, S.

AU - Arkharov, A. A.

AU - Beckman, J. E.

AU - Di Paola, A.

AU - Dolci, M.

AU - Filippenko, A. V.

AU - Foley, R. J.

AU - Krisciunas, K.

AU - Larionov, V. M.

AU - Li, W.

AU - Meikle, W. P.S.

AU - Pastorello, A.

AU - Valentini, G.

AU - Hillebrandt, W.

PY - 2008/2

Y1 - 2008/2

N2 - We present VRIJHK photometry, and optical and near-infrared spectroscopy, of the heavily extinguished Type Ia supernova (SN Ia) 2002cv, located in NGC 3190, which is also the parent galaxy of the SN Ia 2002bo. SN 2002cv, not visible in the blue, has a total visual extinction of 8.74 ± 0.21 mag. In spite of this, we were able to obtain the light curves between -10 and +207 d from the maximum in the I band, and also to follow the spectral evolution, deriving its key parameters. We found the peak I-band brightness to be I max = 16.57 ± 0.10 mag, the maximum absolute I magnitude to be MmaxI = -18.79 ± 0.20, and the parameter Δm15(B) specifying the width of the B-band light curve to be 1.46 ± 0.17 mag. The latter was derived using the relations between this parameter and Δm40(I) and the time-interval Δt max(I) between the two maxima in the I-band light curve. As has been found for previously observed, highly extinguished SNe Ia, a small value of 1.59 ± 0.07 was obtained here for the ratio RV of the total-to-selective extinction ratio for SN 2002cv, which implies a small mean size for the grains along the line of sight towards us. Since it was found for SN 2002bo a canonical value of 3.1, here we present a clear evidence of different dust properties inside NGC 3190.

AB - We present VRIJHK photometry, and optical and near-infrared spectroscopy, of the heavily extinguished Type Ia supernova (SN Ia) 2002cv, located in NGC 3190, which is also the parent galaxy of the SN Ia 2002bo. SN 2002cv, not visible in the blue, has a total visual extinction of 8.74 ± 0.21 mag. In spite of this, we were able to obtain the light curves between -10 and +207 d from the maximum in the I band, and also to follow the spectral evolution, deriving its key parameters. We found the peak I-band brightness to be I max = 16.57 ± 0.10 mag, the maximum absolute I magnitude to be MmaxI = -18.79 ± 0.20, and the parameter Δm15(B) specifying the width of the B-band light curve to be 1.46 ± 0.17 mag. The latter was derived using the relations between this parameter and Δm40(I) and the time-interval Δt max(I) between the two maxima in the I-band light curve. As has been found for previously observed, highly extinguished SNe Ia, a small value of 1.59 ± 0.07 was obtained here for the ratio RV of the total-to-selective extinction ratio for SN 2002cv, which implies a small mean size for the grains along the line of sight towards us. Since it was found for SN 2002bo a canonical value of 3.1, here we present a clear evidence of different dust properties inside NGC 3190.

KW - Dust, extinction

KW - Supernovae: general

KW - Supernovae: individual: SN 2002cv

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DO - 10.1111/j.1365-2966.2007.12638.x

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SN - 0035-8711

VL - 384

SP - 107

EP - 122

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

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SN 2002cv: A heavily obscured Type Ia supernova

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