Supernova 2018aoq and a distance to Seyfert galaxy NGC 4151

D. Y. Tsvetkov, P. V. Baklanov, M. S. Potashov, V. L. Oknyansky, K. M. Mikailov, N. A. Huseynov, I. A. Alekberov, O. V. Khalilov, N. N. Pavlyuk, V. G. Metlov, I. M. Volkov, S. Y. Shugarov

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4 Citations (Scopus)

Abstract

We present optical photometric observations of SN 2018aoq from 2 to 100 d after explosion, and 7 spectra at epochs from 11 to 71 d. The light curves and spectra are typical for SNe II-P. As previously reported, SN 2018aoq appears to be of intermediate brightness between subluminous and normal SNe II-P. SN 2018aoq was discovered in Seyfert galaxy NGC 4151, for which the distance is uncertain. We utilized the expanding photosphere method using three sets of filter combinations and velocities derived from the absorption minima of Fe ii lines and obtained a distance of 20.0 ± 1.6 Mpc. The standard candle method applied to SN 2018aoq yields a distance of 16.6 ± 1.1 Mpc. Both values are consistent with the distance measurements for NGC 4151 based on geometric method.

Original languageEnglish
Pages (from-to)3001-3006
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Volume487
Issue number3
DOIs
Publication statusPublished - 31 May 2019

Keywords

  • galaxies: individual: NGC4151
  • supernovae: individual: SN 2018aoq
  • II SUPERNOVAE
  • NUCLEI

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