The Astrophysical Journal (Jan 2023)
Circumstellar Medium Interaction in SN 2018lab, A Low-luminosity Type IIP Supernova Observed with TESS
- Jeniveve Pearson,
- Griffin Hosseinzadeh,
- David J. Sand,
- Jennifer E. Andrews,
- Jacob E. Jencson,
- Yize Dong,
- K. Azalee Bostroem,
- S. Valenti,
- Daryl Janzen,
- Nicolás Meza Retamal,
- M. J. Lundquist,
- Samuel Wyatt,
- R. C. Amaro,
- Jamison Burke,
- D. Andrew Howell,
- Curtis McCully,
- Daichi Hiramatsu,
- Saurabh W. Jha,
- Nathan Smith,
- Joshua Haislip,
- Vladimir Kouprianov,
- Daniel E. Reichart,
- Yi Yang,
- Jeonghee Rho
Affiliations
- Jeniveve Pearson
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ, 85721-0065, USA ; [email protected]
- Griffin Hosseinzadeh
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ, 85721-0065, USA ; [email protected]
- David J. Sand
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ, 85721-0065, USA ; [email protected]
- Jennifer E. Andrews
- ORCiD
- Gemini Observatory , 670 North A‘ohoku Place, Hilo, HI, 96720-2700, USA
- Jacob E. Jencson
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ, 85721-0065, USA ; [email protected]
- Yize Dong
- ORCiD
- Department of Physics and Astronomy, University of California , Davis, 1 Shields Avenue, Davis, CA, 95616-5270, USA
- K. Azalee Bostroem
- ORCiD
- Department of Astronomy, University of Washington , 3910 15th Avenue NE, Seattle, WA, 98195-0002, USA
- S. Valenti
- ORCiD
- Department of Physics and Astronomy, University of California , Davis, 1 Shields Avenue, Davis, CA, 95616-5270, USA
- Daryl Janzen
- ORCiD
- Department of Physics & Engineering Physics, University of Saskatchewan , 116 Science Place, Saskatoon, SK, S7N 5E2, Canada
- Nicolás Meza Retamal
- ORCiD
- Department of Physics and Astronomy, University of California , Davis, 1 Shields Avenue, Davis, CA, 95616-5270, USA
- M. J. Lundquist
- ORCiD
- W. M. Keck Observatory, 65-1120 Māmalahoa Highway, Kamuela, HI, 96743-8431, USA
- Samuel Wyatt
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ, 85721-0065, USA ; [email protected]
- R. C. Amaro
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ, 85721-0065, USA ; [email protected]
- Jamison Burke
- ORCiD
- Las Cumbres Observatory , 6740 Cortona Drive, Suite 102, Goleta, CA, 93117-5575, USA; Department of Physics, University of California , Santa Barbara, CA, 93106-9530, USA
- D. Andrew Howell
- ORCiD
- Las Cumbres Observatory , 6740 Cortona Drive, Suite 102, Goleta, CA, 93117-5575, USA; Department of Physics, University of California , Santa Barbara, CA, 93106-9530, USA
- Curtis McCully
- ORCiD
- Las Cumbres Observatory , 6740 Cortona Drive, Suite 102, Goleta, CA, 93117-5575, USA; Department of Physics, University of California , Santa Barbara, CA, 93106-9530, USA
- Daichi Hiramatsu
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA, 02138-1516, USA; The NSF AI Institute for Artificial Intelligence and Fundamental Interactions, USA
- Saurabh W. Jha
- ORCiD
- Department of Physics and Astronomy, Rutgers, the State University of New Jersey , 136 Frelinghuysen Road, Piscataway, NJ, 08854-8019, USA
- Nathan Smith
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ, 85721-0065, USA ; [email protected]
- Joshua Haislip
- ORCiD
- Department of Physics and Astronomy, University of North Carolina , 120 East Cameron Avenue, Chapel Hill, NC, 27599, USA
- Vladimir Kouprianov
- ORCiD
- Department of Physics and Astronomy, University of North Carolina , 120 East Cameron Avenue, Chapel Hill, NC, 27599, USA
- Daniel E. Reichart
- ORCiD
- Department of Physics and Astronomy, University of North Carolina , 120 East Cameron Avenue, Chapel Hill, NC, 27599, USA
- Yi Yang
- ORCiD
- Department of Astronomy, University of California , Berkeley, CA, 94720-3411, USA
- Jeonghee Rho
- ORCiD
- SETI Institute , 339 Bernardo Ave, Suite 200, Mountain View, CA, 94043, USA
- DOI
- https://doi.org/10.3847/1538-4357/acb8a9
- Journal volume & issue
-
Vol. 945,
no. 2
p. 107
Abstract
We present photometric and spectroscopic data of SN 2018lab, a low-luminosity Type IIP supernova (LLSN) with a V -band peak luminosity of −15.1 ± 0.1 mag. SN 2018lab was discovered by the Distance Less Than 40 Mpc (DLT40) SN survey only 0.73 days post-explosion, as determined by observations from the Transiting Exoplanet Survey Satellite (TESS). TESS observations of SN 2018lab yield a densely sampled, fast-rising, early-time light curve likely powered by ejecta–circumstellar medium (CSM) interaction. The blueshifted, broadened flash feature in the earliest spectra (<2 days) of SN 2018lab provides further evidence for ejecta–CSM interaction. The early emission features in the spectra of SN 2018lab are well described by models of a red supergiant progenitor with an extended envelope and a close-in CSM. As one of the few LLSNe with observed flash features, SN 2018lab highlights the need for more early spectra to explain the diversity of the flash feature morphology of Type II SNe.
Keywords
