TY - JOUR
T1 - Circumstellar Medium Interaction in SN 2018lab, A Low-luminosity Type IIP Supernova Observed with TESS
AU - Pearson, Jeniveve
AU - Hosseinzadeh, Griffin
AU - Sand, David J.
AU - Andrews, Jennifer E.
AU - Jencson, Jacob E.
AU - Dong, Yize
AU - Bostroem, K. Azalee
AU - Valenti, S.
AU - Janzen, Daryl
AU - Retamal, Nicolás Meza
AU - Lundquist, M. J.
AU - Wyatt, Samuel
AU - Amaro, R. C.
AU - Burke, Jamison
AU - Howell, D. Andrew
AU - McCully, Curtis
AU - Hiramatsu, Daichi
AU - Jha, Saurabh W.
AU - Smith, Nathan
AU - Haislip, Joshua
AU - Kouprianov, Vladimir
AU - Reichart, Daniel E.
AU - Yang, Yi
AU - Rho, Jeonghee
N1 - Publisher Copyright:
© 2023. The Author(s). Published by the American Astronomical Society.
PY - 2023/3/1
Y1 - 2023/3/1
N2 - 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.
AB - 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.
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U2 - 10.3847/1538-4357/acb8a9
DO - 10.3847/1538-4357/acb8a9
M3 - Article
AN - SCOPUS:85150458952
SN - 0004-637X
VL - 945
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 107
ER -