Stellar Life and Death in Abell 78Stellar Life and Death in Abell 78
<p></p> <p>Beneath the vivid hues of this eye-shaped cloud, named Abell 78, a tale of stellar life and death is unfolding. At the centre of the nebula, a dying star –
Tag: White Dwarf
Can Planets Be Rejuvenated Around Dead Stars?Can Planets Be Rejuvenated Around Dead Stars?
<p></p> <p>For a planet, this would be like a day at the spa. After years of growing old, a massive planet could, in theory, brighten up with a radiant, youthful glow.
NuSTAR Hears the “Howls” of Dead Stars as They Feed on Stellar CompanionsNuSTAR Hears the “Howls” of Dead Stars as They Feed on Stellar Companions
<p><a href="http://www.nasa.gov/sites/default/files/thumbnails/image/15-077-nustar.jpg" target="_blank"></a></p> <p>Peering into the heart of the Milky Way galaxy, NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) has spotted a mysterious glow of high-energy X-rays that, according to scientists, could
AAVSO Alert Notice 513: Request for Observations of GW Lib in Support of HST ObservationsAAVSO Alert Notice 513: Request for Observations of GW Lib in Support of HST Observations
AAVSO Alert Notice 513<br /> Request for observations of GW Lib in support of HST observations<br /> March 18, 2015 <p>Dr. Paula Szkody, University of Washington, has requested our help in monitoring the
AAVSO Alert Notice 510: Observations of the Symbiotic Nova ASAS J174600-2321.3AAVSO Alert Notice 510: Observations of the Symbiotic Nova ASAS J174600-2321.3
AAVSO Alert Notice 510<br /> Observations of the symbiotic nova ASAS J174600-2321.3<br /> March 4, 2015 <p>The AAVSO is requesting observations of the symbiotic nova candidate ASAS J174600-2321.3 during the predicted upcoming eclipse
After 2 Decades Hidden in Supernova Glow, Companion Star SpottedAfter 2 Decades Hidden in Supernova Glow, Companion Star Spotted
<p style="text-align:center"></p> <p>Astronomers using NASA’s Hubble Space Telescope have discovered a companion star to a rare type of supernova. This observation confirms the theory that the explosion originated in a double-star
White Dwarf Stars Can Reignite and Explode as SupernovaeWhite Dwarf Stars Can Reignite and Explode as Supernovae
<p style="text-align: center;"></p> <p>Astronomers using ESA’s Integral gamma-ray observatory have demonstrated beyond doubt that dead stars known as white dwarfs can reignite and explode as supernovae. The finding came after the
Trigger of Nearby Supernova Sought by ChandraTrigger of Nearby Supernova Sought by Chandra
<p style="text-align:center"></p> <p>New data from NASA’s Chandra X-ray Observatory offer a glimpse into the environment of a star before it exploded earlier this year, and insight into what triggered one of
Hubble Finds Potential “Zombie Star”Hubble Finds Potential “Zombie Star”
<p style="text-align: center;"></p> <p>Astronomers using NASA’s Hubble Space Telescope for the first time have spotted a star system that later produced an unusual supernova explosion of a white dwarf, the stripped-down
AAVSO Alert Notice 503: Request for Regular Monitoring of the Symbiotic Variable RT CruAAVSO Alert Notice 503: Request for Regular Monitoring of the Symbiotic Variable RT Cru
AAVSO Alert Notice 503<br /> Request for regular monitoring of the symbiotic variable RT Cru<br /> August 6, 2014 <p>Current magnitude 12 -12.5.</p> <p>Dr. Margarita Karovska (Harvard-Smithsonian Center for Astrophysics) and colleagues have requested