SN 2017gmr: An Energetic Type II-P Supernova with Asymmetries
SN 2017gmr: An Energetic Type II-P Supernova with Asymmetries
复制标题
SN 2017gmr:一颗不对称的高能 II-P 型超新星
DOI:
10.3847/1538-4357/ab43e3
复制
发表时间:
2019-07
影响因子:
4.9
通讯作者:
Burk
中科院分区:
文献类型:
--
作者:
Andrews Jennifer E.;S;D. J.;Valenti S.;Smith Nathan;Dastidar Raya;Sahu D. K.;Misra Kuntal;Singh Avinash;Hiramatsu D.;Brown P. J.;Hosseinzadeh G.;Wyatt S.;Vinko J.;Anupama G. C.;Arcavi I.;Ashall Chris;Benetti S.;Berton Marco;Bostroem K. A.;Bulla M.;Burk
We present high-cadence UV, optical, and near-infrared data on the luminous Type II-P supernova SN 2017gmr from hours after discovery through the first 180 days. SN 2017gmr does not show signs of narrow, high-ionization emission lines in the early optical spectra, yet the optical light-curve evolution suggests that an extra energy source from circumstellar medium (CSM) interaction must be present for at least 2 days after explosion. Modeling of the early light curve indicates a ∼500 R⊙ progenitor radius, consistent with a rather compact red supergiant, and late-time luminosities indicate that up to 0.130 ± 0.026 M⊙ of 56Ni are present, if the light curve is solely powered by radioactive decay, although the 56Ni mass may be lower if CSM interaction contributes to the post-plateau luminosity. Prominent multipeaked emission lines of Hα and [O i] emerge after day 154, as a result of either an asymmetric explosion or asymmetries in the CSM. The lack of narrow lines within the first 2 days of explosion in the likely presence of CSM interaction may be an example of close, dense, asymmetric CSM that is quickly enveloped by the spherical supernova ejecta.
登录
查看更多内容
DOI:
10.1007/978-3-319-21846-5_39
发表时间:
2017-10
期刊:
--
影响因子:
--
作者:
I. Arcavi
通讯作者:
I. Arcavi
DOI:
10.1007/978-3-319-21846-5_35
发表时间:
2016-11
期刊:
arXiv: High Energy Astrophysical Phenomena
影响因子:
--
作者:
A. Gal-yam
通讯作者:
A. Gal-yam
影响因子:
6.5
作者:
Joseph P. Anderson
通讯作者:
Joseph P. Anderson
DOI:
10.1007/978-3-319-21846-5_38
发表时间:
2016-12
期刊:
arXiv: High Energy Astrophysical Phenomena
影响因子:
--
作者:
N. Smith
通讯作者:
N. Smith
影响因子:
14.1
作者:
F. Förster;F. Förster;T. Moriya;J. Maureira;Joseph P. Anderson;S. Blinnikov;F. Bufano;G. Cabrera-Vives;G. Cabrera-Vives;A. Clocchiatti;A. Clocchiatti;T. D. Jaeger;P. Estévez;P. Estévez;L. Galbany;S. González-Gaitán;S. González-Gaitán;G. Gräfener;M. Hamuy;M. Hamuy;E. Hsiao;P. Huentelemu;P. Huijse;P. Huijse;P. Huijse;H. Kuncarayakti;J. Martínez;J. Martínez;G. Medina;G. Pignata;G. Pignata;A. Razza;A. Razza;I. Reyes;I. Reyes;J. S. Martín;R. C. Smith;E. Vera;A. K. Vivas;A. D. U. Postigo;A. D. U. Postigo;Sung-Chul Yoon;Sung-Chul Yoon;C. Ashall;M. Fraser;A. Gal-yam;E. Kankare;L. Guillou;P. Mazzali;P. Mazzali;Nick Walton;D. Young
通讯作者:
F. Förster;F. Förster;T. Moriya;J. Maureira;Joseph P. Anderson;S. Blinnikov;F. Bufano;G. Cabrera-Vives;G. Cabrera-Vives;A. Clocchiatti;A. Clocchiatti;T. D. Jaeger;P. Estévez;P. Estévez;L. Galbany;S. González-Gaitán;S. González-Gaitán;G. Gräfener;M. Hamuy;M. Hamuy;E. Hsiao;P. Huentelemu;P. Huijse;P. Huijse;P. Huijse;H. Kuncarayakti;J. Martínez;J. Martínez;G. Medina;G. Pignata;G. Pignata;A. Razza;A. Razza;I. Reyes;I. Reyes;J. S. Martín;R. C. Smith;E. Vera;A. K. Vivas;A. D. U. Postigo;A. D. U. Postigo;Sung-Chul Yoon;Sung-Chul Yoon;C. Ashall;M. Fraser;A. Gal-yam;E. Kankare;L. Guillou;P. Mazzali;P. Mazzali;Nick Walton;D. Young