2003PASP..115.1289V


Query : 2003PASP..115.1289V

2003PASP..115.1289V - Publ. Astron. Soc. Pac., 115, 1289-1295 (2003/November-0)

On the progenitor of the type II-plateau supernova 2003gd in M74.

VAN DYK S.D., LI W. and FILIPPENKO A.V.

Abstract (from CDS):

Hubble Space Telescope (HST) WFPC2 archival F606W and F300W images obtained within 1 year prior to the explosion of the nearby Type II supernova (SN) 2003gd in M74 (=NGC 628) have been analyzed to isolate the progenitor star. The SN site was located using precise astrometry applied to the HST images. Two plausible candidates are identified within 0".6 of the SN position in the F606W image. Neither candidate was detected in the F300W image. SN 2003gd appears to be of Type II-plateau (II-P), with age ~87 days on June 17 UT and with low reddening [E(B-V)=0.13 mag]. The most likely of the two progenitor candidates has MV0~-3.5 mag (for an extinction-corrected distance modulus of 29.3 mag), and on the basis of additional color information derived from a high-quality, archival ground-based I-band image, we estimate that this star was a red supergiant with initial (zero-age main sequence) mass MZAMS~8-9 M. This mass estimate is somewhat lower than, but relatively consistent with, recent limits placed on the progenitor masses of other SNe II-P, using HST data. Future HST imaging with the HST Advanced Camera for Surveys, when the SN has faded considerably, will be very useful in pinpointing the exact SN location and securing identification of the progenitor. If our proposed candidate is confirmed, it will be only the sixth SN progenitor ever directly identified.

Abstract Copyright:

Journal keyword(s): Stars: Supernovae: General - supernovae: individual (SN 2003gd) - supernovae: individual (SN 1999em) - Stars: Evolution - Stars: Variables: Other - galaxies: individual (M74) - Galaxies: Individual: NGC Number: NGC 628

Nomenclature: Fig.1, Table 3: [VLF2003] SN 2003GD A (Nos A-B).

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 SN 2002ap SN* 01 36 23.85 +15 45 13.2   13.11 14.54     SNIc-BL 564 1
2 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1736 1
3 SN 2003gd SN* 01 36 42.65 +15 44 19.9     13.2     SNIIP 249 2
4 SN 1961V SN* 02 43 36.42 +37 20 43.6   12.7 12.5     SNIIpec? 206 2
5 SN 1978K SN* 03 17 38.620 -66 33 03.40   13.0       SNII 205 1
6 SN 2001du SN* 03 33 29.11 -36 08 32.5     14.0     SNIIP 54 1
7 SN 1997D SN* 04 11 01.00 -56 29 56.0       16.3   SNIIpec 175 1
8 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 674 1
9 NGC 1637 Sy2 04 41 28.1926876152 -02 51 28.667815488   11.4   11.0 11.3 ~ 418 0
10 SN 2001B SN* 04 57 19.24 +78 11 16.5     15.0     SNIb 42 1
11 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4939 2
12 SN 2001is SN* 05 42 09.07 +69 21 54.8     17.6     SNIb 27 1
13 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1418 1
14 SN 1999gi SN* 10 18 16.66 +41 26 28.2   14.8       SNIIP 236 1
15 SN 1997bs ev 11 20 14.25 +12 58 19.6     17.13     SNIIn? 122 1
16 SN 1999bu SN* 11 39 42.50 +31 54 29.1     17.5     SNIc 20 1
17 SN 1999ev SN* 12 19 48.21336 +29 37 21.3492     14.4     SNIIP 47 1
18 SN 1999br SN* 13 00 41.80 +02 29 45.8     17.5     SNIIPp 165 1
19 [VLF2003] SN 2003gd B * ~ ~           ~ 2 0

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