Resumen
We present the identification of the progenitor of the Type IIP SN 2012ec in archival preexplosion Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) and Advanced Camera for Surveys Wide Field Channel F814W images. The properties of the progenitor are further constrained by non-detections in pre-explosion WFPC2 F450W and F606W images. We report a series of early photometric and spectroscopic observations of SN 2012ec. The r'-band light curve shows a plateau with Mr' = -17.0. The early spectrum is similar to the Type IIP SN 1999em, with the expansion velocity measured at Ha absorption minimum of -11 700 km s-1 (at 1 d post-discovery). The photometric and spectroscopic evolution of SN 2012ec shows it to be aType IIP SN, discovered only a few days post-explosion (<6 d). We derive a luminosity for the progenitor, in comparison with MARCS model spectral energy distributions, of log L/L⊙ = 5.15 ± 0.19, from which we infer an initial mass rangeof 14-22M⊙. This is the first SN with an identified progenitor to be followed by the Public ESO Spectroscopic Survey of Transient Objects (PESSTO).
| Idioma original | English |
|---|---|
| Publicación | Monthly Notices of the Royal Astronomical Society: Letters |
| Volumen | 431 |
| N.º | 1 |
| DOI | |
| Estado | Published - 3 may 2013 |
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ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
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Supernova 2012ec : Identification of the progenitor and early monitoring with PESSTO. / Maund, J. R.; Fraser, M.; Smartt, S. J.; Botticella, M. T.; Barbarino, C.; Childress, M.; Gal-Yam, A.; Inserra, C.; Pignata, G.; Reichart, D.; Schmidt, B.; Sollerman, J.; Taddia, F.; Tomasella, L.; Valenti, S.; Yaron, O.
En: Monthly Notices of the Royal Astronomical Society: Letters, Vol. 431, N.º 1, 03.05.2013.Resultado de la investigación: Article
TY - JOUR
T1 - Supernova 2012ec
T2 - Identification of the progenitor and early monitoring with PESSTO
AU - Maund, J. R.
AU - Fraser, M.
AU - Smartt, S. J.
AU - Botticella, M. T.
AU - Barbarino, C.
AU - Childress, M.
AU - Gal-Yam, A.
AU - Inserra, C.
AU - Pignata, G.
AU - Reichart, D.
AU - Schmidt, B.
AU - Sollerman, J.
AU - Taddia, F.
AU - Tomasella, L.
AU - Valenti, S.
AU - Yaron, O.
PY - 2013/5/3
Y1 - 2013/5/3
N2 - We present the identification of the progenitor of the Type IIP SN 2012ec in archival preexplosion Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) and Advanced Camera for Surveys Wide Field Channel F814W images. The properties of the progenitor are further constrained by non-detections in pre-explosion WFPC2 F450W and F606W images. We report a series of early photometric and spectroscopic observations of SN 2012ec. The r'-band light curve shows a plateau with Mr' = -17.0. The early spectrum is similar to the Type IIP SN 1999em, with the expansion velocity measured at Ha absorption minimum of -11 700 km s-1 (at 1 d post-discovery). The photometric and spectroscopic evolution of SN 2012ec shows it to be aType IIP SN, discovered only a few days post-explosion (<6 d). We derive a luminosity for the progenitor, in comparison with MARCS model spectral energy distributions, of log L/L⊙ = 5.15 ± 0.19, from which we infer an initial mass rangeof 14-22M⊙. This is the first SN with an identified progenitor to be followed by the Public ESO Spectroscopic Survey of Transient Objects (PESSTO).
AB - We present the identification of the progenitor of the Type IIP SN 2012ec in archival preexplosion Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) and Advanced Camera for Surveys Wide Field Channel F814W images. The properties of the progenitor are further constrained by non-detections in pre-explosion WFPC2 F450W and F606W images. We report a series of early photometric and spectroscopic observations of SN 2012ec. The r'-band light curve shows a plateau with Mr' = -17.0. The early spectrum is similar to the Type IIP SN 1999em, with the expansion velocity measured at Ha absorption minimum of -11 700 km s-1 (at 1 d post-discovery). The photometric and spectroscopic evolution of SN 2012ec shows it to be aType IIP SN, discovered only a few days post-explosion (<6 d). We derive a luminosity for the progenitor, in comparison with MARCS model spectral energy distributions, of log L/L⊙ = 5.15 ± 0.19, from which we infer an initial mass rangeof 14-22M⊙. This is the first SN with an identified progenitor to be followed by the Public ESO Spectroscopic Survey of Transient Objects (PESSTO).
KW - Galaxies: individual: Ngc 1084
KW - Supernovae: general
KW - Supernovae: individual: 2012ec
UR - http://www.scopus.com/inward/record.url?scp=84876844160&partnerID=8YFLogxK
U2 - 10.1093/mnrasl/slt017
DO - 10.1093/mnrasl/slt017
M3 - Article
AN - SCOPUS:84876844160
VL - 431
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 1745-3925
IS - 1
ER -