TY - JOUR
T1 - The nature of supernovae 2010O and 2010P in Arp 299 - I. Near-infrared and optical evolution
AU - Kankare, E.
AU - Mattila, S.
AU - Ryder, S.
AU - Fraser, M.
AU - Pastorello, A.
AU - Elias-Rosa, N.
AU - Romero-Cañizales, C.
AU - Alberdi, A.
AU - Hentunen, V. P.
AU - Herrero-Illana, R.
AU - Kotilainen, J.
AU - Pérez-Torres, M.-A.
AU - Väisänen, P.
PY - 2014/5/11
Y1 - 2014/5/11
N2 - We present near-infrared and optical photometry, plus optical spectroscopy of two strippedenvelope supernovae (SNe) 2010O and 2010P that exploded in two different components of an interacting luminous infrared galaxy Arp 299 within only a few days of one another. SN 2010O is found to be photometrically and spectroscopically similar to many normal Type Ib SNe and our multiwavelength observations of SN 2010P suggest it to be a Type IIb SN. No signs of clear hydrogen features or interaction with the circumstellar medium are evident in the optical spectrum of SN 2010P. We derive estimates for the host galaxy line-of-sight extinctions for both SNe, based on both light curve and spectroscopic comparison finding consistent results. These methods are also found to provide much more robust estimates of the SN host galaxy reddening than the commonly used empirical relations between extinction and equivalent width of Na I D absorption features. The SN observations also suggest that different extinction laws are present in different components of Arp 299. For completeness, we study high-resolution pre-explosion images of Arp 299 and find both SNe to be close to, but not coincident with, extended sources that are likely massive clusters. A very simple model applied to the bolometric light curve of SN 2010O implies a rough estimate for the explosion parameters of Ek ≈ 3 × 1051 erg, Mej ≈ 2.9M⊙ and MNi ≈ 0.16M⊙.
AB - We present near-infrared and optical photometry, plus optical spectroscopy of two strippedenvelope supernovae (SNe) 2010O and 2010P that exploded in two different components of an interacting luminous infrared galaxy Arp 299 within only a few days of one another. SN 2010O is found to be photometrically and spectroscopically similar to many normal Type Ib SNe and our multiwavelength observations of SN 2010P suggest it to be a Type IIb SN. No signs of clear hydrogen features or interaction with the circumstellar medium are evident in the optical spectrum of SN 2010P. We derive estimates for the host galaxy line-of-sight extinctions for both SNe, based on both light curve and spectroscopic comparison finding consistent results. These methods are also found to provide much more robust estimates of the SN host galaxy reddening than the commonly used empirical relations between extinction and equivalent width of Na I D absorption features. The SN observations also suggest that different extinction laws are present in different components of Arp 299. For completeness, we study high-resolution pre-explosion images of Arp 299 and find both SNe to be close to, but not coincident with, extended sources that are likely massive clusters. A very simple model applied to the bolometric light curve of SN 2010O implies a rough estimate for the explosion parameters of Ek ≈ 3 × 1051 erg, Mej ≈ 2.9M⊙ and MNi ≈ 0.16M⊙.
KW - supernovae: general
KW - supernovae: individual: SN 2010O
KW - upernovae: individual: SN 2010P
KW - galaxies: individual: Arp 299
KW - galaxies: starburst
KW - infrared: galaxies
UR - http://www.scopus.com/inward/record.url?scp=84898942123&partnerID=8YFLogxK
U2 - 10.1093/mnras/stt2289
DO - 10.1093/mnras/stt2289
M3 - Article
AN - SCOPUS:84898942123
SN - 0035-8711
VL - 440
SP - 1052
EP - 1066
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -