Supernova 1993J

This image shows the supernova 1993J which is situated inside the majestic spiral galaxy M81. It can be seen in situ in the annotated image.

Though astronomers saw the star explode as a supernova 21 years ago, the glow of that explosion is still present, as seen here. The supernova has faded to the point where astronomers are confident that they have picked up the ultraviolet glow of a very hot companion star. This is the first time astronomers have been able to put constraints on the properties of the companion star in this unusual class of supernova called Type IIb. Hubble observations in ultraviolet light confirm the theory that the explosion originated in a double-star system where one star fueled the mass-loss from the aging primary star.

Links:

Credit:

NASA, ESA, and O. Fox (University of California, Berkeley), A. Bostroem (STScI), S. Van Dyk (Caltech), A. Filippenko (University of California, Berkeley), C. Fransson (Stockholm University), T. Matheson (NOAO), S. Cenko (University of California, Berkeley, and NASA/GSFC), P. Chandra (National Center for Radio Astrophysics/Pune University, India), V. Dwarkadas (University of Chicago), W. Li and A. Parker (University of California, Berkeley), and N. Smith (Steward Observatory)

About the Image

NASA press release
NASA caption
Id:opo1438d
Type:Observation
Release date:10 September 2014, 11:55
Size:500 x 500 px

About the Object

Name:SN 1993J
Type:Local Universe : Star : Evolutionary Stage : Supernova
Distance:11 million light years
Constellation:Ursa Major
Category:Stars

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Coordinates

Position (RA):9 55 24.96
Position (Dec):69° 1' 14.25"
Field of view:0.17 x 0.17 arcminutes
Orientation:North is 0.1° left of vertical

Colours & filters

BandWavelengthTelescope
Optical
B
438 nm Hubble Space Telescope
WFC3
Optical
V
555 nm Hubble Space Telescope
WFC3
Optical
R
625 nm Hubble Space Telescope
WFC3

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