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PostPosted: Thu Feb 16, 2017 3:14 pm 
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Pulsing Stars Reveal Orbiting Planets --"The Link Is a Mystery That Can't Be Explained"

http://www.dailygalaxy.com/my_weblog/20 ... ained.html

Quote:
For the first time, astronomers from MIT and elsewhere have observed a star pulsing in response to its orbiting planet. The star, which goes by the name HAT-P-2, is about 400 light years from Earth and is circled by a gas giant measuring eight times the mass of Jupiter—one of the most massive exoplanets known today. The planet, named HAT-P-2b, tracks its star in a highly eccentric orbit, flying extremely close to and around the star, then hurtling far out before eventually circling back around.

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Interdum taurus est victor

Chris S.


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PostPosted: Tue Mar 28, 2017 5:57 pm 
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Habitable Planet Reality Check: Wolf 1061c Revisited

http://www.drewexmachina.com/2017/03/25 ... revisited/

Quote:
In a recent paper submitted for publication in the peer-reviewed Astronomy & Astrophysics with Nicola Astudillo-Defru (Observatoire de Genève) as the lead author, the latest analysis results of HARP data for five nearby M-dwarf stars are described in detail. Among the new finds is a potentially habitable exoplanet found orbiting the nearby red dwarf GJ 273 or Luyten’s Star located only 12.4 light years away (see “Habitable Planet Reality Check: The Nearby GJ 273 or Luyten’s Star”). Another system described by Astudillo-Defru et al. is GJ 628 better known as Wolf 1061. Back in December of 2015, a team of astronomers led by Duncan Wright (University of New South Wales – Australia) announced the discovery of three exoplanets orbiting this nearby red dwarf they found using publicly available HARPS spectra including one, Wolf 1061c, that has some prospects of being potentially habitable (see “Habitable Planet Reality Check: Wolf 1061”). Because of the new results of Astudillo-Defru et al. along with updated information on the properties of Wolf 1061, it is time to take a fresh look at the potential habitability of Wolf 1061c.


Relevant Wiki page:
https://en.wikipedia.org/wiki/Wolf_1061c

Quote:
Wolf 1061c or WL 1061c is an exoplanet orbiting within the habitable zone of the red dwarf star Wolf 1061 in the constellation Ophiuchus, about 13.8 light years from Earth, making it the second-closest known potentially habitable exoplanet to Earth, after Proxima Centauri b. It is the second planet in order from its host star in a triple planetary system, and has an orbital period of 17.9 days. Wolf 1061c is classified as a super-Earth exoplanet as its estimated radius is greater than 1.5 earth radiuses.


Unnecessary pedantry, we won't know if these worlds are truly habitable for life from Earth 'til we can visit them.

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PostPosted: Thu Apr 06, 2017 6:42 pm 
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