Latest Joel Kastner Stories

Planetary Nebula Survey By Chandra
2012-10-11 05:21:48

April Flowers for redOrbit.com - Your Universe Online An international team of astronomers using NASA's Chandra X-ray Observatory has created a sweeping new survey of dying stars — or planetary nebula — in the neighborhood of the Sun. The resulting X-ray images shed light on the violent "end game" of a Sun-like star's life. Led by Joel Kastner from the Rochester Institute of Technology (RIT), the team won seven days of observation time with Chandra in 2011-2012 to survey and...

2009-06-10 13:35:00

Astronomers are announcing today that a sequence of images collected with the Smithsonian's Submillimeter Array (SMA) clearly reveals the presence of a rotating molecular disk orbiting the young binary star system V4046 Sagittarii. The SMA images provide an unusually vivid snapshot of the process of formation of giant planets, comets, and Pluto-like bodies. The results also confirm that such objects may just as easily form around double stars as around single stars like our Sun. These...

2009-01-05 11:37:09

Carbon monoxide and hydrogen cyanide found in gas cloud orbiting V4046 Sgr Life on a planet ruled by two suns might be a little complicated. Two sunrises, two sunsets. Twice the radiation field. In a paper published in the December 2008 issue of Astronomy and Astrophysics, astronomer Joel Kastner and his team suggest that planets may easily form around certain types of twin (or "binary") star systems. A disk of molecules discovered orbiting a pair of twin young suns in the constellation...

2006-02-08 21:40:00

By Gina Keating LOS ANGELES (Reuters) - Rings of planet-forming dust have been discovered circling two "hypergiant" stars, indicating planet formation may be taking place in environments previously thought too hostile, according to research published on Wednesday. In an article published in Astrophysical Journal Letters, astronomers concluded that planets can form around a wider range of stars than previously thought, including two "hypergiants" dubbed R66 and R126 that are 30- to 70-times...

2006-02-08 12:10:00

JPL -- NASA's Spitzer Space Telescope has identified two huge "hypergiant" stars circled by monstrous disks of what might be planet-forming dust. The findings surprised astronomers because stars as big as these were thought to be inhospitable to planets. "These extremely massive stars are tremendously hot and bright and have very strong winds, making the job of building planets difficult," said Joel Kastner of the Rochester Institute of Technology in New York. "Our data suggest that the...

2005-05-30 16:19:58

New York's Rochester Institute of Technology and University of Rochester to present results Two astronomers have used NASA's Chandra X-ray Observatory to discover a shell of superheated gas around a dying star in the Milky Way galaxy. Joel Kastner, professor of imaging science at the Rochester Institute of Technology, and Rodolpho Montez, a graduate student in physics and astronomy at the University of Rochester, will present their results today at the American Astronomical Society meeting in...

Word of the Day
  • A somewhat riotous parade, accompanied with the blowing of tin horns, and other discordant noises; also, a burlesque serenade; a charivari.
'Callithump' is a back-formation of 'callithumpian,' a 'fanciful formation' according to the Oxford English Dictionary. However, the English Dialect Dictionary, says 'Gallithumpians' is a Dorset and Devon word from the 1790s that refers to 'a society of radical social reformers' or 'noisy disturbers of elections and meetings.'