Supernova 2018aoq and a distance to Seyfert galaxy NGC 4151
| Autor: | M. Sh. Potashov, N.A. Huseynov, O. V. Khalilov, S. Yu. Shugarov, Vladimir Metlov, Kh. M. Mikailov, I. M. Volkov, V. L. Oknyansky, I. A. Alekberov, P. V. Baklanov, D. Yu. Tsvetkov, N. N. Pavlyuk |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
High Energy Astrophysical Phenomena (astro-ph.HE) Brightness Photosphere 010308 nuclear & particles physics Cosmic distance ladder FOS: Physical sciences Astronomy and Astrophysics Astrophysics Light curve 01 natural sciences Astrophysics - Astrophysics of Galaxies Galaxy Spectral line Supernova Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences Absorption (electromagnetic radiation) Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) |
| Popis: | We present optical photometric observations of SN 2018aoq from 2 to 100 days after explosion, and 7 spectra at epochs from 11 to 71 days. 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 utilised the Expanding Photosphere Method using three sets of filter combinations and velocities derived from the absorption minima of FeII 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. 7 pages, 3 figures, submitted to MNRAS |
| Databáze: | OpenAIRE |
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