SIMBAD references

2015MNRAS.448.2312B - Mon. Not. R. Astron. Soc., 448, 2312-2331 (2015/April-2)

SN 2012ec: mass of the progenitor from PESSTO follow-up of the photospheric phase.

BARBARINO C., DALL'ORA M., BOTTICELLA M.T., DELLA VALLE M., ZAMPIERI L., MAUND J.R., PUMO M.L., JERKSTRAND A., BENETTI S., ELIAS-ROSA N., FRASER M., GAL-YAM A., HAMUY M., INSERRA C., KNAPIC C., LACLUYZE A.P., MOLINARO M., OCHNER P., PASTORELLO A., PIGNATA G., REICHART D.E., RIES C., RIFFESER A., SCHMIDT B., SCHMIDT M., SMAREGLIA R., SMARTT S.J., SMITH K., SOLLERMAN J., SULLIVAN M., TOMASELLA L., TURATTO M., VALENTI S., YARON O. and YOUNG D.

Abstract (from CDS):

We present the results of a photometric and spectroscopic monitoring campaign of SN 2012ec, which exploded in the spiral galaxy NGC 1084, during the photospheric phase. The photometric light curve exhibits a plateau with luminosity L = 0.9x1042erg/s and duration ∼ 90 d, which is somewhat shorter than standard Type II-P supernovae (SNe). We estimate the nickel mass M(56Ni) = 0.040±0.015M from the luminosity at the beginning of the radioactive tail of the light curve. The explosion parameters of SN 2012ec were estimated from the comparison of the bolometric light curve and the observed temperature and velocity evolution of the ejecta with predictions from hydrodynamical models. We derived an envelope mass of 12.6M, an initial progenitor radius of 1.6x1013cm and an explosion energy of 1.2foe. These estimates agree with an independent study of the progenitor star identified in pre-explosion images, for which an initial mass of M = 14-22M was determined. We have applied the same analysis to two other Type II-P SNe (SNe 2012aw and 2012A), and carried out a comparison with the properties of SN 2012ec derived in this paper. We find a reasonable agreement between the masses of the progenitors obtained from pre-explosion images and masses derived from hydrodynamical models. We estimate the distance to SN 2012ec with the standardized candle method (SCM) and compare it with other estimates based on other primary and secondary indicators. SNe 2012A, 2012aw and 2012ec all follow the standard relations for the SCM for the use of Type II-P SNe as distance indicators.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): supernovae: general - supernovae: individual: SN 2012ec - supernovae: individual: SN 2012aw - supernovae: individual: SN 2012A - supernovae: individual: NGC 1084

Status at CDS:  

CDS comments: Reference stars Tables 3-4 are not in Simbad.

Simbad objects: 21

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2015MNRAS.448.2312B and select 'bookmark this link' or equivalent in the popup menu


2020.05.26-02:26:38

© Université de Strasbourg/CNRS

    • Contact