A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Less than 1% of Core-Collapse Supernovae in the local universe occur in elliptical galaxies
Tekijät: Irani I., Prentice S. J., Schulze S., Gal-Yam A., Teffs Jacob, Mazzali Paolo, Sollerman J., Gonzalez E. P., Taggart K., De Kishalay, Fremling Christoffer, Perley Daniel A., Strotjohann Nora L., Kasliwal Mansi M., Howell A., Dhawan S., Tzanidakis Anastasios, Hiramatsu Daichi, Kool Erik C., Anderson J. P. Muller-Bravo T. E., Dekany Richard, Gromadzki Mariusz, Carini Roberta, Galbany L., Drake Andrew J., Burke Jamison, Pellegrino Craig, Della Valle Massimo, Medford Michael S., Rusholme Ben, Young D. R., Galbany L., Gutierrez Claudia P., Inserra Cosimo, Omer Rafia, Shupe David L., Chen T. -W., Shin Kyung Min, Yaron Ofer, McCully Curtis, Nicholl Matt, Riddle Reed
Kustantaja: IOP PUBLISHING LTD
Julkaisuvuosi: 2022
Journal: Astrophysical Journal
Artikkelin numero: 10
Vuosikerta: 927
Numero: 1
DOI: https://doi.org/10.3847/1538-4357/ac4709
Verkko-osoite: https://iopscience.iop.org/article/10.3847/1538-4357/ac4709
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/68079309
Preprintin osoite: https://arxiv.org/abs/2110.02252
We present observations of three Core-collapse supernovae (CCSNe) in elliptical hosts, detected by the Zwicky Transient Facility Bright Transient Survey (BTS). SN 2019ape is a SN Ic that exploded in the main body of a typical elliptical galaxy. Its properties are consistent with an explosion of a regular SN Ic progenitor. A secondary g-band light curve peak could indicate interaction of the ejecta with circumstellar material (CSM). An H$\alpha$-emitting source at the explosion site suggests a residual local star formation origin. SN 2018fsh and SN 2020uik are SNe II which exploded in the outskirts of elliptical galaxies. SN 2020uik shows typical spectra for SNe II, while SN 2018fsh shows a boxy nebular H$\alpha$ profile, a signature of CSM interaction. We combine these 3 SNe with 7 events from the literature and analyze their hosts as a sample. We present multi-wavelength photometry of the hosts, and compare this to archival photometry of all BTS hosts. Using the spectroscopically complete BTS we conclude that $0.3\%^{+0.3}_{-0.1}$ of all CCSNe occur in elliptical galaxies. We derive star-formation rates and stellar masses for the host-galaxies and compare them to the properties of other SN hosts. We show that CCSNe in ellipticals have larger physical separations from their hosts compared to SNe Ia in elliptical galaxies, and discuss implications for star-forming activity in elliptical galaxies.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
