SN 2022ann: a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment

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SN 2022ann : a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment. / Davis, K. W.; Taggart, K.; Tinyanont, S.; Foley, R. J.; Villar, V. A.; Izzo, L.; Angus, C. R.; Bustamante-Rosell, M. J.; Coulter, D. A.; Earl, N.; Farias, D.; Hjorth, J.; Huber, M. E.; Jones, D. O.; Kelly, P. L.; Kilpatrick, C. D.; Langeroodi, D.; Miao, H. Y.; Pellegrino, C. M.; Ramirez-Ruiz, E.; Ransome, C. L.; Rest, S.; Siebert, M. R.; Terreran, G.; Thornton, I. M.; Yadavalli, S. K.; Zeimann, G. R.; Auchettl, K.; Bom, C. R.; Brink, T. G.; Burke, J.; Camacho-Neves, Y.; Chambers, K. C.; De Boer, T. J.L.; Demarchi, L.; Filippenko, A. V.; Galbany, L.; Gall, C.; Gao, H.; Herpich, F. R.; Howell, D. A.; Jacobson-Galan, W. V.; Jha, S. W.; Kanaan, A.; Khetan, N.; Kwok, L. A.; Lai, Z.; Larison, C.; Lin, C. C.; Loertscher, K. C.; Magnier, E. A.; Mccully, C.; McGill, P.; Newsome, M.; Padilla Gonzalez, E.; Pan, Y. C.; Rest, A.; Rho, J.; Ribeiro, T.; Santos, A.; Schoenell, W.; Sharief, S. N.; Smith, K. W.; Wainscoat, R. J.; Wang, Q.; Zenati, Y.; Zheng, W.

In: Monthly Notices of the Royal Astronomical Society, Vol. 523, No. 2, 30.05.2023, p. 2530-2550.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Davis, KW, Taggart, K, Tinyanont, S, Foley, RJ, Villar, VA, Izzo, L, Angus, CR, Bustamante-Rosell, MJ, Coulter, DA, Earl, N, Farias, D, Hjorth, J, Huber, ME, Jones, DO, Kelly, PL, Kilpatrick, CD, Langeroodi, D, Miao, HY, Pellegrino, CM, Ramirez-Ruiz, E, Ransome, CL, Rest, S, Siebert, MR, Terreran, G, Thornton, IM, Yadavalli, SK, Zeimann, GR, Auchettl, K, Bom, CR, Brink, TG, Burke, J, Camacho-Neves, Y, Chambers, KC, De Boer, TJL, Demarchi, L, Filippenko, AV, Galbany, L, Gall, C, Gao, H, Herpich, FR, Howell, DA, Jacobson-Galan, WV, Jha, SW, Kanaan, A, Khetan, N, Kwok, LA, Lai, Z, Larison, C, Lin, CC, Loertscher, KC, Magnier, EA, Mccully, C, McGill, P, Newsome, M, Padilla Gonzalez, E, Pan, YC, Rest, A, Rho, J, Ribeiro, T, Santos, A, Schoenell, W, Sharief, SN, Smith, KW, Wainscoat, RJ, Wang, Q, Zenati, Y & Zheng, W 2023, 'SN 2022ann: a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment', Monthly Notices of the Royal Astronomical Society, vol. 523, no. 2, pp. 2530-2550. https://doi.org/10.1093/mnras/stad1433

APA

Davis, K. W., Taggart, K., Tinyanont, S., Foley, R. J., Villar, V. A., Izzo, L., Angus, C. R., Bustamante-Rosell, M. J., Coulter, D. A., Earl, N., Farias, D., Hjorth, J., Huber, M. E., Jones, D. O., Kelly, P. L., Kilpatrick, C. D., Langeroodi, D., Miao, H. Y., Pellegrino, C. M., ... Zheng, W. (2023). SN 2022ann: a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment. Monthly Notices of the Royal Astronomical Society, 523(2), 2530-2550. https://doi.org/10.1093/mnras/stad1433

Vancouver

Davis KW, Taggart K, Tinyanont S, Foley RJ, Villar VA, Izzo L et al. SN 2022ann: a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment. Monthly Notices of the Royal Astronomical Society. 2023 May 30;523(2):2530-2550. https://doi.org/10.1093/mnras/stad1433

Author

Davis, K. W. ; Taggart, K. ; Tinyanont, S. ; Foley, R. J. ; Villar, V. A. ; Izzo, L. ; Angus, C. R. ; Bustamante-Rosell, M. J. ; Coulter, D. A. ; Earl, N. ; Farias, D. ; Hjorth, J. ; Huber, M. E. ; Jones, D. O. ; Kelly, P. L. ; Kilpatrick, C. D. ; Langeroodi, D. ; Miao, H. Y. ; Pellegrino, C. M. ; Ramirez-Ruiz, E. ; Ransome, C. L. ; Rest, S. ; Siebert, M. R. ; Terreran, G. ; Thornton, I. M. ; Yadavalli, S. K. ; Zeimann, G. R. ; Auchettl, K. ; Bom, C. R. ; Brink, T. G. ; Burke, J. ; Camacho-Neves, Y. ; Chambers, K. C. ; De Boer, T. J.L. ; Demarchi, L. ; Filippenko, A. V. ; Galbany, L. ; Gall, C. ; Gao, H. ; Herpich, F. R. ; Howell, D. A. ; Jacobson-Galan, W. V. ; Jha, S. W. ; Kanaan, A. ; Khetan, N. ; Kwok, L. A. ; Lai, Z. ; Larison, C. ; Lin, C. C. ; Loertscher, K. C. ; Magnier, E. A. ; Mccully, C. ; McGill, P. ; Newsome, M. ; Padilla Gonzalez, E. ; Pan, Y. C. ; Rest, A. ; Rho, J. ; Ribeiro, T. ; Santos, A. ; Schoenell, W. ; Sharief, S. N. ; Smith, K. W. ; Wainscoat, R. J. ; Wang, Q. ; Zenati, Y. ; Zheng, W. / SN 2022ann : a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment. In: Monthly Notices of the Royal Astronomical Society. 2023 ; Vol. 523, No. 2. pp. 2530-2550.

Bibtex

@article{533bfe0fbc1546eca3418cf900f2cf17,
title = "SN 2022ann: a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment",
abstract = "We present optical and near-infrared (NIR) observations of the Type Icn supernova (SN Icn) 2022ann, the fifth member of its newly identified class of SNe. Its early optical spectra are dominated by narrow carbon and oxygen P-Cygni features with absorption velocities of ∼800 km s-1; slower than other SNe Icn and indicative of interaction with a dense, H/He-poor circumstellar medium (CSM) that is outflowing slower than typical Wolf-Rayet wind velocities of >1000 km s-1. We identify helium in NIR spectra 2 weeks after maximum and in optical spectra at 3 weeks, demonstrating that the CSM is not fully devoid of helium. Unlike other SNe Icn, the spectra of SN 2022ann never develop broad features from SN ejecta, including in the nebular phase. Compared to other SNe Icn, SN 2022ann has a low luminosity (o-band absolute magnitude of ∼-17.7), and evolves slowly. The bolometric light curve is well-modelled by 4.8 M⊙ of SN ejecta interacting with 1.3 M⊙ of CSM. We place an upper limit of 0.04 M⊙ of 56Ni synthesized in the explosion. The host galaxy is a dwarf galaxy with a stellar mass of 107.34 M⊙ (implied metallicity of log(Z/Z⊙) ≈ 0.10) and integrated star-formation rate of log (SFR) = -2.20 M⊙ yr-1; both lower than 97 per cent of galaxies observed to produce core-collapse supernovae, although consistent with star-forming galaxies on the galaxy Main Sequence. The low CSM velocity, nickel and ejecta masses, and likely low-metallicity environment disfavour a single Wolf-Rayet progenitor star. Instead, a binary companion is likely required to adequately strip the progenitor and produce a low-velocity outflow. ",
keywords = "binaries, stars: massive, transients: supernovae",
author = "Davis, {K. W.} and K. Taggart and S. Tinyanont and Foley, {R. J.} and Villar, {V. A.} and L. Izzo and Angus, {C. R.} and Bustamante-Rosell, {M. J.} and Coulter, {D. A.} and N. Earl and D. Farias and J. Hjorth and Huber, {M. E.} and Jones, {D. O.} and Kelly, {P. L.} and Kilpatrick, {C. D.} and D. Langeroodi and Miao, {H. Y.} and Pellegrino, {C. M.} and E. Ramirez-Ruiz and Ransome, {C. L.} and S. Rest and Siebert, {M. R.} and G. Terreran and Thornton, {I. M.} and Yadavalli, {S. K.} and Zeimann, {G. R.} and K. Auchettl and Bom, {C. R.} and Brink, {T. G.} and J. Burke and Y. Camacho-Neves and Chambers, {K. C.} and {De Boer}, {T. J.L.} and L. Demarchi and Filippenko, {A. V.} and L. Galbany and C. Gall and H. Gao and Herpich, {F. R.} and Howell, {D. A.} and Jacobson-Galan, {W. V.} and Jha, {S. W.} and A. Kanaan and N. Khetan and Kwok, {L. A.} and Z. Lai and C. Larison and Lin, {C. C.} and Loertscher, {K. C.} and Magnier, {E. A.} and C. Mccully and P. McGill and M. Newsome and {Padilla Gonzalez}, E. and Pan, {Y. C.} and A. Rest and J. Rho and T. Ribeiro and A. Santos and W. Schoenell and Sharief, {S. N.} and Smith, {K. W.} and Wainscoat, {R. J.} and Q. Wang and Y. Zenati and W. Zheng",
note = "Publisher Copyright: {\textcopyright} 2023 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",
year = "2023",
month = may,
day = "30",
doi = "10.1093/mnras/stad1433",
language = "English",
volume = "523",
pages = "2530--2550",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - SN 2022ann

T2 - a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment

AU - Davis, K. W.

AU - Taggart, K.

AU - Tinyanont, S.

AU - Foley, R. J.

AU - Villar, V. A.

AU - Izzo, L.

AU - Angus, C. R.

AU - Bustamante-Rosell, M. J.

AU - Coulter, D. A.

AU - Earl, N.

AU - Farias, D.

AU - Hjorth, J.

AU - Huber, M. E.

AU - Jones, D. O.

AU - Kelly, P. L.

AU - Kilpatrick, C. D.

AU - Langeroodi, D.

AU - Miao, H. Y.

AU - Pellegrino, C. M.

AU - Ramirez-Ruiz, E.

AU - Ransome, C. L.

AU - Rest, S.

AU - Siebert, M. R.

AU - Terreran, G.

AU - Thornton, I. M.

AU - Yadavalli, S. K.

AU - Zeimann, G. R.

AU - Auchettl, K.

AU - Bom, C. R.

AU - Brink, T. G.

AU - Burke, J.

AU - Camacho-Neves, Y.

AU - Chambers, K. C.

AU - De Boer, T. J.L.

AU - Demarchi, L.

AU - Filippenko, A. V.

AU - Galbany, L.

AU - Gall, C.

AU - Gao, H.

AU - Herpich, F. R.

AU - Howell, D. A.

AU - Jacobson-Galan, W. V.

AU - Jha, S. W.

AU - Kanaan, A.

AU - Khetan, N.

AU - Kwok, L. A.

AU - Lai, Z.

AU - Larison, C.

AU - Lin, C. C.

AU - Loertscher, K. C.

AU - Magnier, E. A.

AU - Mccully, C.

AU - McGill, P.

AU - Newsome, M.

AU - Padilla Gonzalez, E.

AU - Pan, Y. C.

AU - Rest, A.

AU - Rho, J.

AU - Ribeiro, T.

AU - Santos, A.

AU - Schoenell, W.

AU - Sharief, S. N.

AU - Smith, K. W.

AU - Wainscoat, R. J.

AU - Wang, Q.

AU - Zenati, Y.

AU - Zheng, W.

N1 - Publisher Copyright: © 2023 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.

PY - 2023/5/30

Y1 - 2023/5/30

N2 - We present optical and near-infrared (NIR) observations of the Type Icn supernova (SN Icn) 2022ann, the fifth member of its newly identified class of SNe. Its early optical spectra are dominated by narrow carbon and oxygen P-Cygni features with absorption velocities of ∼800 km s-1; slower than other SNe Icn and indicative of interaction with a dense, H/He-poor circumstellar medium (CSM) that is outflowing slower than typical Wolf-Rayet wind velocities of >1000 km s-1. We identify helium in NIR spectra 2 weeks after maximum and in optical spectra at 3 weeks, demonstrating that the CSM is not fully devoid of helium. Unlike other SNe Icn, the spectra of SN 2022ann never develop broad features from SN ejecta, including in the nebular phase. Compared to other SNe Icn, SN 2022ann has a low luminosity (o-band absolute magnitude of ∼-17.7), and evolves slowly. The bolometric light curve is well-modelled by 4.8 M⊙ of SN ejecta interacting with 1.3 M⊙ of CSM. We place an upper limit of 0.04 M⊙ of 56Ni synthesized in the explosion. The host galaxy is a dwarf galaxy with a stellar mass of 107.34 M⊙ (implied metallicity of log(Z/Z⊙) ≈ 0.10) and integrated star-formation rate of log (SFR) = -2.20 M⊙ yr-1; both lower than 97 per cent of galaxies observed to produce core-collapse supernovae, although consistent with star-forming galaxies on the galaxy Main Sequence. The low CSM velocity, nickel and ejecta masses, and likely low-metallicity environment disfavour a single Wolf-Rayet progenitor star. Instead, a binary companion is likely required to adequately strip the progenitor and produce a low-velocity outflow.

AB - We present optical and near-infrared (NIR) observations of the Type Icn supernova (SN Icn) 2022ann, the fifth member of its newly identified class of SNe. Its early optical spectra are dominated by narrow carbon and oxygen P-Cygni features with absorption velocities of ∼800 km s-1; slower than other SNe Icn and indicative of interaction with a dense, H/He-poor circumstellar medium (CSM) that is outflowing slower than typical Wolf-Rayet wind velocities of >1000 km s-1. We identify helium in NIR spectra 2 weeks after maximum and in optical spectra at 3 weeks, demonstrating that the CSM is not fully devoid of helium. Unlike other SNe Icn, the spectra of SN 2022ann never develop broad features from SN ejecta, including in the nebular phase. Compared to other SNe Icn, SN 2022ann has a low luminosity (o-band absolute magnitude of ∼-17.7), and evolves slowly. The bolometric light curve is well-modelled by 4.8 M⊙ of SN ejecta interacting with 1.3 M⊙ of CSM. We place an upper limit of 0.04 M⊙ of 56Ni synthesized in the explosion. The host galaxy is a dwarf galaxy with a stellar mass of 107.34 M⊙ (implied metallicity of log(Z/Z⊙) ≈ 0.10) and integrated star-formation rate of log (SFR) = -2.20 M⊙ yr-1; both lower than 97 per cent of galaxies observed to produce core-collapse supernovae, although consistent with star-forming galaxies on the galaxy Main Sequence. The low CSM velocity, nickel and ejecta masses, and likely low-metallicity environment disfavour a single Wolf-Rayet progenitor star. Instead, a binary companion is likely required to adequately strip the progenitor and produce a low-velocity outflow.

KW - binaries

KW - stars: massive

KW - transients: supernovae

U2 - 10.1093/mnras/stad1433

DO - 10.1093/mnras/stad1433

M3 - Journal article

AN - SCOPUS:85162102279

VL - 523

SP - 2530

EP - 2550

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 2

ER -

ID: 360819419