2013AJ....146...24V


Query : 2013AJ....146...24V

2013AJ....146...24V - Astron. J., 146, 24 (2013/August-0)

An echo of supernova 2008bk.

VAN DYK S.D.

Abstract (from CDS):

I have discovered a prominent light echo around the low-luminosity Type II-plateau supernova (SN) 2008bk in NGC 7793, seen in archival images obtained with the Wide Field Channel of the Advanced Camera for Surveys on board the Hubble Space Telescope (HST). The echo is a partial ring, brighter to the north and east than to the south and west. The analysis of the echo I present suggests that it is due to the SN light pulse scattered by a sheet, or sheets, of dust located ~15 pc from the SN. The composition of the dust is assumed to be of standard Galactic diffuse interstellar grains. The visual extinction of the dust responsible for the echo is AV~ 0.05 mag in addition to the extinction due to the Galactic foreground toward the host galaxy. That the SN experienced much less overall extinction implies that it is seen through a less dense portion of the interstellar medium in its environment. The late-time HST photometry of SN 2008bk also clearly demonstrates that the progenitor star has vanished.

Abstract Copyright:

Journal keyword(s): dust, extinction - galaxies: individual: NGC 7793 - scattering - supernovae: general - supernovae: individual: SN 2008bk

CDS comments: Stars A to G (Fig.1 + Table 2) 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 - 2024
#notes
1 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1710 1
2 SN 2003gd SN* 01 36 42.65 +15 44 19.9     13.2     SNIIP 246 2
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17262 1
4 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4907 2
5 NGC 2441 GiG 07 51 54.6864254040 +73 00 56.553791256   12.7       ~ 101 0
6 SN 1995E SN* 07 51 56.75 +73 00 34.6   16.81 15.9     SNIa 117 1
7 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1410 1
8 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4420 3
9 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 812 1
10 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 315 1
11 SN 1999ev SN* 12 19 48.21336 +29 37 21.3492     14.4     SNIIP 47 1
12 NGC 4274 LIN 12 19 50.5930710456 +29 36 53.238538764 11.78 11.34 10.41     ~ 248 1
13 SN 2006X SN* 12 22 53.93 +15 48 32.0     15.3     SNIa 322 1
14 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1832 2
15 NGC 4527 GiP 12 34 08.4 +02 39 15   12.4       ~ 530 2
16 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 763 1
17 NGC 4900 EmG 13 00 39.1193785512 +02 30 05.154593868   12.8       ~ 251 0
18 SN 1999br SN* 13 00 41.80 +02 29 45.8     17.5     SNIIPp 164 1
19 NAME Cas A SNR 23 23 24.000 +58 48 54.00     14.30     ~ 2768 1
20 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1094 2
21 SN 2008bk SN* 23 57 50.42 -32 33 21.5           SNIIP 138 2

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