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Hubble monitors supernova in nearby galaxy M82

Date:
February 26, 2014
Source:
NASA/Goddard Space Flight Center
Summary:
Astronomers have taken a Hubble Space Telescope composite image of a supernova explosion designated SN 2014J in the galaxy M82. At a distance of approximately 11.5 million light-years from Earth it is the closest supernova of its type discovered in the past few decades. The explosion is categorized as a Type Ia supernova, which is theorized to be triggered in binary systems consisting of a white dwarf and another star -- which could be a second white dwarf, a star like our sun, or a giant star.

This is a Hubble Space Telescope composite image of a supernova explosion designated SN 2014J in the galaxy M82. At a distance of approximately 11.5 million light-years from Earth it is the closest supernova of its type discovered in the past few decades.
Credit: Image courtesy of NASA/Goddard Space Flight Center

Astronomers have taken a Hubble Space Telescope composite image of a supernova explosion designated SN 2014J in the galaxy M82. At a distance of approximately 11.5 million light-years from Earth it is the closest supernova of its type discovered in the past few decades. The explosion is categorized as a Type Ia supernova, which is theorized to be triggered in binary systems consisting of a white dwarf and another star -- which could be a second white dwarf, a star like our sun, or a giant star.

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Astronomers using a ground-based telescope discovered the explosion on January 21, 2014. This Hubble photograph was taken on January 31, as the supernova approached its peak brightness. The Hubble data are expected to help astronomers refine distance measurements to Type Ia supernovae. In addition, the observations could yield insights into what kind of stars were involved in the explosion. Hubble's ultraviolet-light sensitivity will allow astronomers to probe the environment around the site of the supernova explosion and in the interstellar medium of the host galaxy.

Because of their consistent peak brightness, Type Ia supernovae are among the best tools to measure distances in the universe. They were fundamental to the 1998 discovery of the mysterious acceleration of the expanding universe. A hypothesized repulsive force, called dark energy, is thought to cause the acceleration.

The January 31 image, shown here as an inset, was taken in visible light with Hubble's Wide Field Camera 3. This image was superimposed into a photo mosaic of the entire galaxy taken in 2006 taken with Hubble's Advanced Camera for Surveys.

Among the other major NASA space-based observatories used in the M82 viewing campaign are Spitzer Space Telescope, Chandra X-ray Observatory, Nuclear Spectroscopic Telescope Array (NuSTAR), Fermi Gamma-ray Space Telescope, Swift Gamma Ray Burst Explorer, and the Stratospheric Observatory for Infrared Astronomy (SOFIA).


Story Source:

The above story is based on materials provided by NASA/Goddard Space Flight Center. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Goddard Space Flight Center. "Hubble monitors supernova in nearby galaxy M82." ScienceDaily. ScienceDaily, 26 February 2014. <www.sciencedaily.com/releases/2014/02/140226144541.htm>.
NASA/Goddard Space Flight Center. (2014, February 26). Hubble monitors supernova in nearby galaxy M82. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2014/02/140226144541.htm
NASA/Goddard Space Flight Center. "Hubble monitors supernova in nearby galaxy M82." ScienceDaily. www.sciencedaily.com/releases/2014/02/140226144541.htm (accessed October 24, 2014).

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