A long life of excess: the interacting transient SN 2017hcc

S. Moran; M. Fraser; R. Kotak; A. Pastorello; S. Benetti; S. J. Brennan; C. P. Gutiérrez; E. Kankare; H. Kuncarayakti; S. Mattila; T. M. Reynolds; J. P. Anderson; P. J. Brown; S. Campana; K. C. Chambers; T. -W. Chen; M. Della Valle; M. Dennefeld; N. Elias-Rosa; L. Galbany; F. J. Galindo-Guil; M. Gromadzki; D. Hiramatsu; C. Inserra; G. Leloudas; T. E. Müller-Bravo; M. Nicholl; A. Reguitti; M. Shahbandeh; S. J. Smartt; L. Tartaglia; D. R. Young

doi:10.1051/0004-6361/202244565

A long life of excess: the interacting transient SN 2017hcc

S. Moran, M. Fraser, R. Kotak, A. Pastorello, S. Benetti, S. J. Brennan, C. P. Gutiérrez, E. Kankare, H. Kuncarayakti, S. Mattila, T. M. Reynolds, J. P. Anderson, P. J. Brown, S. Campana, K. C. Chambers, T. -W. Chen, M. Della Valle, M. Dennefeld, N. Elias-Rosa, L. GalbanyF. J. Galindo-Guil, M. Gromadzki, D. Hiramatsu, C. Inserra, G. Leloudas, T. E. Müller-Bravo, M. Nicholl, A. Reguitti, M. Shahbandeh, S. J. Smartt, L. Tartaglia, D. R. Young

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

37 Downloads (Pure)

Abstract

In this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 ± 2 days, ATLAS o band) and high luminosity (peaking at −20.78 ± 0.01 mag in the ATLAS o band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, and blueshifts were noticeable in the Balmer lines starting from a few hundred days, but appeared to be fading by around +1200 d. We posit that an IR light echo from pre-existing dust dominates at early times, with some possible condensation of new dust grains occurring at epochs ≳+800 d.

Original language	English
Article number	A51
Number of pages	22
Journal	Astronomy and Astrophysics
Volume	669
Issue number	January 2023
DOIs	https://doi.org/10.1051/0004-6361/202244565
Publication status	Published - 5 Jan 2023

Keywords

supernovae: general
supernovae: individual: SN 2017hcc
supernovae: individual: ATLAS17lsn
supernovae: individual: PS17fra

Access to Document

10.1051/0004-6361/202244565Licence: Creative Commons: Attribution (CC BY)

MoranS2022longFinal published version, 2.7 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

Moran, S., Fraser, M., Kotak, R., Pastorello, A., Benetti, S., Brennan, S. J., Gutiérrez, C. P., Kankare, E., Kuncarayakti, H., Mattila, S., Reynolds, T. M., Anderson, J. P., Brown, P. J., Campana, S., Chambers, K. C., Chen, T. .-W., Della Valle, M., Dennefeld, M., Elias-Rosa, N., ... Young, D. R. (2023). A long life of excess: the interacting transient SN 2017hcc. Astronomy and Astrophysics, 669(January 2023), Article A51. https://doi.org/10.1051/0004-6361/202244565

@article{352fdd8b40f143e0b47e7a8bfead64f8,

title = "A long life of excess: the interacting transient SN 2017hcc",

abstract = "In this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 ± 2 days, ATLAS o band) and high luminosity (peaking at −20.78 ± 0.01 mag in the ATLAS o band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, and blueshifts were noticeable in the Balmer lines starting from a few hundred days, but appeared to be fading by around +1200 d. We posit that an IR light echo from pre-existing dust dominates at early times, with some possible condensation of new dust grains occurring at epochs ≳+800 d.",

keywords = "supernovae: general, supernovae: individual: SN 2017hcc, supernovae: individual: ATLAS17lsn, supernovae: individual: PS17fra",

author = "S. Moran and M. Fraser and R. Kotak and A. Pastorello and S. Benetti and Brennan, {S. J.} and Guti{\'e}rrez, {C. P.} and E. Kankare and H. Kuncarayakti and S. Mattila and Reynolds, {T. M.} and Anderson, {J. P.} and Brown, {P. J.} and S. Campana and Chambers, {K. C.} and Chen, {T. -W.} and {Della Valle}, M. and M. Dennefeld and N. Elias-Rosa and L. Galbany and Galindo-Guil, {F. J.} and M. Gromadzki and D. Hiramatsu and C. Inserra and G. Leloudas and M{\"u}ller-Bravo, {T. E.} and M. Nicholl and A. Reguitti and M. Shahbandeh and Smartt, {S. J.} and L. Tartaglia and Young, {D. R.}",

year = "2023",

month = jan,

day = "5",

doi = "10.1051/0004-6361/202244565",

language = "English",

volume = "669",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "January 2023",

}

Moran, S, Fraser, M, Kotak, R, Pastorello, A, Benetti, S, Brennan, SJ, Gutiérrez, CP, Kankare, E, Kuncarayakti, H, Mattila, S, Reynolds, TM, Anderson, JP, Brown, PJ, Campana, S, Chambers, KC, Chen, T-W, Della Valle, M, Dennefeld, M, Elias-Rosa, N, Galbany, L, Galindo-Guil, FJ, Gromadzki, M, Hiramatsu, D, Inserra, C, Leloudas, G, Müller-Bravo, TE, Nicholl, M, Reguitti, A, Shahbandeh, M, Smartt, SJ, Tartaglia, L & Young, DR 2023, 'A long life of excess: the interacting transient SN 2017hcc', Astronomy and Astrophysics, vol. 669, no. January 2023, A51. https://doi.org/10.1051/0004-6361/202244565

TY - JOUR

T1 - A long life of excess

T2 - the interacting transient SN 2017hcc

AU - Moran, S.

AU - Fraser, M.

AU - Kotak, R.

AU - Pastorello, A.

AU - Benetti, S.

AU - Brennan, S. J.

AU - Gutiérrez, C. P.

AU - Kankare, E.

AU - Kuncarayakti, H.

AU - Mattila, S.

AU - Reynolds, T. M.

AU - Anderson, J. P.

AU - Brown, P. J.

AU - Campana, S.

AU - Chambers, K. C.

AU - Chen, T. -W.

AU - Della Valle, M.

AU - Dennefeld, M.

AU - Elias-Rosa, N.

AU - Galbany, L.

AU - Galindo-Guil, F. J.

AU - Gromadzki, M.

AU - Hiramatsu, D.

AU - Inserra, C.

AU - Leloudas, G.

AU - Müller-Bravo, T. E.

AU - Nicholl, M.

AU - Reguitti, A.

AU - Shahbandeh, M.

AU - Smartt, S. J.

AU - Tartaglia, L.

AU - Young, D. R.

PY - 2023/1/5

Y1 - 2023/1/5

N2 - In this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 ± 2 days, ATLAS o band) and high luminosity (peaking at −20.78 ± 0.01 mag in the ATLAS o band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, and blueshifts were noticeable in the Balmer lines starting from a few hundred days, but appeared to be fading by around +1200 d. We posit that an IR light echo from pre-existing dust dominates at early times, with some possible condensation of new dust grains occurring at epochs ≳+800 d.

AB - In this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 ± 2 days, ATLAS o band) and high luminosity (peaking at −20.78 ± 0.01 mag in the ATLAS o band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, and blueshifts were noticeable in the Balmer lines starting from a few hundred days, but appeared to be fading by around +1200 d. We posit that an IR light echo from pre-existing dust dominates at early times, with some possible condensation of new dust grains occurring at epochs ≳+800 d.

KW - supernovae: general

KW - supernovae: individual: SN 2017hcc

KW - supernovae: individual: ATLAS17lsn

KW - supernovae: individual: PS17fra

U2 - 10.1051/0004-6361/202244565

DO - 10.1051/0004-6361/202244565

M3 - Article

SN - 0004-6361

VL - 669

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - January 2023

M1 - A51

ER -

A long life of excess: the interacting transient SN 2017hcc

Abstract

Keywords

Access to Document

Fingerprint

Cite this