2009CBET.1806....1N


Query : 2009CBET.1806....1N

2009CBET.1806....1N - Central Bureau Electronic Telegrams, 1806, 1 (2009/May-0)

Supernova 2009em in NGC 157.

NAVASARDYAN H. and BENETTI S.

Abstract (from CDS):

H. Navasardyan and S. Benetti, Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, report that a spectrogram (range 360-740 nm, resolution 1.4 nm) of 2009em (cf. CBET 1798), obtained on May 19.37 UT with the European Southern Observatory New Technology Telescope (+ EFOSC2), shows it to be an evolved type-Ic supernova, about 2 months after the explosion. Assuming a recession velocity of 1652 km/s (from H I Parkes All Sky Survey Final Catalogue, 2006; via NED) for the host galaxy, the "GELATO" spectrum-comparison code (Harutyunyan et al. 2008, A.Ap. 488, 383; available at https://gelato.tng.iac.es) provides good fits to a spectrum of the type-Ic supernova 2007gr (Valenti et al. 2008, Ap.J. 673, L155) taken 52 days after the B-band maximum light. The red continuum may imply non-negligible extinction for SN 2009em.

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Journal keyword(s):

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 SN 2009em SN* 00 34 44.53 -08 23 57.6           SNIc 20 1
2 NGC 157 Sy2 00 34 46.7879913696 -08 23 47.273597952   11.0   10.03 10.7 ~ 366 1
3 SN 2007gr SN* 02 43 27.98 +37 20 44.7       12.77   SNIc 265 1

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