2009A&A...503..869M

Query : 2009A&A...503..869M

2009A&A...503..869M - Astronomy and Astrophysics, volume 503869-872 (2009/9-1)

1.6GHz VLBI observations of SN 1979C: almost-free expansion.

MARCAIDE J.M., MARTI-VIDAL I., PEREZ-TORRES M.A., ALBERDI A., GUIRADO J.C., ROS E. and WEILER K.W.

Abstract (from CDS):

We report on 1.6GHz Very-Long-Baseline-Interferometry (VLBI) observations of supernova SN1979C made on 18 November 2002. We derive a model-dependent supernova size. We also present a reanalysis of VLBI observations made by us on June 1999 and by other authors on February 2005. We conclude that, contrary to our earlier claim of strong deceleration in the expansion, SN1979C has been undergoing almost-free expansion (m=0.91±0.09; R∝tm) for over 25 years.

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Journal keyword(s): radio continuum: stars - supernovae: individual: SN1979C

Simbad objects: 6

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Number of rows : 6
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 PKS J1200+1523 Rad 12 00 33 +15 23.9   19.5       ~ 2 0
2 TXS 1214+161 Rad 12 17 24.301 +15 55 06.52           ~ 2 0
3 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1963 2
4 SN 1979C SN* 12 22 58.58 +15 47 52.7   11.6       SNIIL 609 1
5 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
6 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3

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