The Carnegie Supernova Project II Observations of SN 2014ab possibly revealing a 2010jl-like SN IIn with pre-existing dust
Research output: Contribution to journal › Journal article › peer-review
Standard
The Carnegie Supernova Project II Observations of SN 2014ab possibly revealing a 2010jl-like SN IIn with pre-existing dust. / Moriya, T. J.; Stritzinger, M. D.; Taddia, F.; Morrell, N.; Suntzeff, N. B.; Contreras, C.; Gall, C.; Hjorth, J.; Ashall, C.; Burns, C. R.; Busta, L.; Campillay, A.; Castellon, S.; Corco, C.; Davis, S.; Galbany, L.; Gonzalez, C.; Holmbo, S.; Hsiao, E. Y.; Maund, J. R.; Phillips, M. M.
In: Astronomy & Astrophysics, Vol. 641, A148, 23.09.2020.Research output: Contribution to journal › Journal article › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - The Carnegie Supernova Project II Observations of SN 2014ab possibly revealing a 2010jl-like SN IIn with pre-existing dust
AU - Moriya, T. J.
AU - Stritzinger, M. D.
AU - Taddia, F.
AU - Morrell, N.
AU - Suntzeff, N. B.
AU - Contreras, C.
AU - Gall, C.
AU - Hjorth, J.
AU - Ashall, C.
AU - Burns, C. R.
AU - Busta, L.
AU - Campillay, A.
AU - Castellon, S.
AU - Corco, C.
AU - Davis, S.
AU - Galbany, L.
AU - Gonzalez, C.
AU - Holmbo, S.
AU - Hsiao, E. Y.
AU - Maund, J. R.
AU - Phillips, M. M.
PY - 2020/9/23
Y1 - 2020/9/23
N2 - We present optical and near-infrared photometry and spectroscopy of the Type IIn supernova, (SN) 2014ab, obtained by the Carnegie Supernova Project II and initiated immediately after its optical discovery. We also study public mid-infrared photometry obtained by the Wide-field Infrared Survey Explorer satellite extending from 56 days prior to the optical discovery to over 1600 days. The light curve of SN 2014ab evolves slowly, while the spectra exhibit strong emission features produced from the interaction between rapidly expanding ejecta and dense circumstellar matter. The light curve and spectral properties are very similar to those of SN 2010jl. The estimated mass-loss rate of the progenitor of SN 2014ab is of the order of 0.1 M-circle dot yr(-1) under the assumption of spherically symmetric circumstellar matter and steady mass loss. Although the mid-infrared luminosity increases due to emission from dust, which is characterized by a blackbody temperature close to the dust evaporation temperature (similar to 2000 K), there were no clear signatures of in situ dust formation observed within the cold dense shell located behind the forward shock in SN 2014ab in the early phases. Mid-infrared emission of SN 2014ab may originate from pre-existing dust located within dense circumstellar matter that is heated by the SN shock or shock-driven radiation. Finally, for the benefit of the community, we also present five near-infrared spectra of SN 2010jl obtained between 450 to 1300 days post-discovery in the appendix.
AB - We present optical and near-infrared photometry and spectroscopy of the Type IIn supernova, (SN) 2014ab, obtained by the Carnegie Supernova Project II and initiated immediately after its optical discovery. We also study public mid-infrared photometry obtained by the Wide-field Infrared Survey Explorer satellite extending from 56 days prior to the optical discovery to over 1600 days. The light curve of SN 2014ab evolves slowly, while the spectra exhibit strong emission features produced from the interaction between rapidly expanding ejecta and dense circumstellar matter. The light curve and spectral properties are very similar to those of SN 2010jl. The estimated mass-loss rate of the progenitor of SN 2014ab is of the order of 0.1 M-circle dot yr(-1) under the assumption of spherically symmetric circumstellar matter and steady mass loss. Although the mid-infrared luminosity increases due to emission from dust, which is characterized by a blackbody temperature close to the dust evaporation temperature (similar to 2000 K), there were no clear signatures of in situ dust formation observed within the cold dense shell located behind the forward shock in SN 2014ab in the early phases. Mid-infrared emission of SN 2014ab may originate from pre-existing dust located within dense circumstellar matter that is heated by the SN shock or shock-driven radiation. Finally, for the benefit of the community, we also present five near-infrared spectra of SN 2010jl obtained between 450 to 1300 days post-discovery in the appendix.
KW - supernovae: general
KW - supernovae: individual: SN 2014ab
KW - supernovae: individual: SN 2010jl
KW - circumstellar matter
KW - CORE-COLLAPSE SUPERNOVAE
KW - NEUTRAL OXYGEN SPECTRUM
KW - INTERACTING SUPERNOVAE
KW - INFRARED PHOTOMETRY
KW - OPTICAL TRANSIENT
KW - LOW-MASS
KW - NGC 300
KW - EJECTA
KW - STAR
KW - PROGENITOR
U2 - 10.1051/0004-6361/202038118
DO - 10.1051/0004-6361/202038118
M3 - Journal article
VL - 641
JO - Astronomy & Astrophysics
JF - Astronomy & Astrophysics
SN - 0004-6361
M1 - A148
ER -
ID: 252155377