2015MNRAS.448.2312B


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.14CEST01:37:58

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

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

Simbad objects: 21

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Number of rows : 21

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 SN 1969L SN* 02 43 45 +37 18.7   13.2 13.2     SNIIP 117 1
2 SN 2009H SN* 02 45 58.36 -07 35 00.3           SNII 22 1
3 SN 2012ec SN* 02 45 59.89 -07 34 25.0         22.32 SNIIP 50 3
4 NGC 1084 GiG 02 45 59.926 -07 34 43.10 11.22 11.59 10.73 10.55 11.1 ~ 339 2
5 SN 1998dl SN* 02 46 01.47 -07 34 25.1     16.0     SNIIP 38 1
6 SN 1963P SN* 02 46 02.10 -07 34 50.4   14.0       SNIa 52 1
7 SN 2009bw SN* 03 56 06.92 +72 55 40.9           SNII 57 1
8 SN 1997D SN* 04 11 01.00 -56 29 56.0       16.3   SNIIpec 163 1
9 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 603 1
10 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4592 2
11 NGC 3239 IG 10 25 04.867 +17 09 49.21   13.5       ~ 159 0
12 SN 2012A SN* 10 25 07.39 +17 09 14.6           SNIIP 91 0
13 SN 2012aw SN* 10 43 53.735 +11 40 17.63       15   SNIIP 153 1
14 M 95 GiP 10 43 57.69173 +11 42 13.6274 10.71 10.51 9.73 9.48   M0 980 2
15 SN 2006bp SN* 11 53 55.74 +52 21 09.4 14.5 15.8 14.7     SNIIP 160 1
16 SN 2009E SN* 12 09 49.56 +58 50 50.3           ~ 46 1
17 SN 2005cs SN* 13 29 53.37 +47 10 28.2   14.5       SNIIP 350 1
18 SN 1970G SN* 14 03 00.83 +54 14 32.8   11.8 11.50     SNIIL 207 1
19 SN 2009kf SN* 16 12 54.00 +55 38 13.8           SNIIP 42 1
20 SN 2004et SN* 20 35 25.33 +60 07 17.7   12.88       SNIIP 428 1
21 SN 2007od SN* 23 55 48.68 +18 24 54.8       14.4   SNIIP 113 1

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2021.06.14-01:37:58

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