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HST ACS Image of M81
About the Object
- R.A. PositionR.A. PositionRight ascension – analogous to longitude – is one component of an object's position.09h 55m 24.78s
- Dec. PositionDec. PositionDeclination – analogous to latitude – is one component of an object's position.69° 1' 13.68"
About the Data
- Data DescriptionData DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.Note: The wide-field image of M81 was released on May 28, 2007. ACS/WFC data from proposal 10584 (PI: A. Zezas (Harvard-Smithsonian Center for Astrophysics)) was combined into a BVI color-composite image. Hubble data for this release of SN 1993J were obtained from proposal 12531: A. Filippenko (University of California, Berkeley), P. Chandra (Pune University, India), R. Chevalier (University of Virginia), V. Dwarkadas (University of Chicago), C. Fransson (Stockholm University), W. Li (University of California, Berkeley) T. Matheson (NOAO), J. Silverman (University of Texas, Austin), N. Smith (Steward Observatory), and S. Van Dyk (Caltech). The science team comprises: 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 (Pune University, India), V. Dwarkadas (University of Chicago), W. Li and A. Parker (University of California, Berkeley), and N. Smith (Steward Observatory).
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.SN 1993J, Supernova 1993J
- Release DateSeptember 9, 2014
- Science ReleaseHubble Finds Companion Star Hidden for 21 Years in a Supernova’s Glare
- CreditsNASA, ESA, and the Hubble Heritage Team (STScI/AURA); Acknowledgment: A. Zezas (Harvard-Smithsonian Center for Astrophysics)
Related Images & Videos
Artist's Impression of Supernova 1993J
This is an artist's impression of supernova 1993J, an exploding star in the galaxy M81 whose light reached us 21 years ago. The supernova originated in a double-star system where one member was a massive star that exploded after siphoning most of its hydrogen envelope to its...
Supernova 1993J in Spiral Galaxy M81
This Hubble Space Telescope photo composite shows the location of supernova 1993J inside the majestic spiral galaxy M81. Though astronomers saw the star explode as a supernova 21 years ago, the glow of that explosion is still present, as seen in the inset image. The supernova...
Scenario for Type IIb SN 1993J
This illustration shows the key steps in the evolution of a Type IIb supernova. Panel 1: Two very hot stars orbit about each other in a binary system. Panel 2: The slightly more massive member of the pair evolves into a bloated red giant and spills the hydrogen in its outer...
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Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov
