Sentences with phrase «on a brown dwarf for»

A MAGNETIC disturbance has been directly observed on a brown dwarf for the first time.

Not exact matches

I studied brown dwarfs for a while when I was working on Hubble; at the time we didn't know much about them but I found them fascinating.

Adding up all the dark forms of ordinary matter (gas clouds, brown dwarfs, black holes, and so on) still leaves 95 percent of the mass in the universe unaccounted for.

In the 1980s, for example, researchers proposed that an unseen brown dwarf star could cause periodic extinctions on Earth by triggering fusillades of comets.

«Brown dwarfs are strikingly similar to Jupiter so we study their atmospheres in order to look at what weather on other worlds might look like,» said Jonathan Gagné, a Backyard Worlds team member from the Carnegie Institution for Science.

For the moment, data on brown dwarfs can be used as a stand - in for contemplating extrasolar worlds we hope to study with future instruments like the James Webb Space TelescoFor the moment, data on brown dwarfs can be used as a stand - in for contemplating extrasolar worlds we hope to study with future instruments like the James Webb Space Telescofor contemplating extrasolar worlds we hope to study with future instruments like the James Webb Space Telescope.

Although the nature of the electromagnetic engine powering brown - dwarf aurorae is still to be determined, the scenario of the subcorotation of magnetospheric plasma on closed field lines, powering in turn magnetosphere - ionosphere coupling currents, has been suggested as a plausible model for this case (Schrijver 2009; Nichols et al. 2012).

For more information on Sedna and other dwarf planets check out Mike Brown's dwarf planet website.

We present here our search methods and spectroscopic follow - up of our high - priority c... ▽ More We are conducting a proper - motion survey for young brown dwarfs in the Taurus - Auriga molecular cloud based on the Pan-STARRS1 3 $ \ pi $ Survey.

For more information on the known dwarf planets in the Kuiper belt check out my thesis advisor Mike Brown's dwarf planet website.

In 2010, a new study (which included better model atmosphere fitting) argued that the system is around six billion years old, even older than estimates of 3.7 to 4.3 billion years derived from a 2009 study based on mass and evolutionary models for the two brown dwarf companions Ba and Bb (Liu et al, 2010; and King et al, 2009), which are much older than an earlier age estimate of between 0.8 and 2.0 billion years based on the star's rotational speed (press release; Scholz et al, 2003; and Lachaume et al, 1999).

They find that much depends on how we set limits on the habitable zone, but in general habitability durations of a billion years are possible for planets within 2 - 3 Roche radii for brown dwarfs above 0.03 solar masses.

Note: Special thanks to Ken Croswell on studies revising previous estimates of the system's age based on analyses of its brown dwarf companions and to Mike Stevens for notifying us of the discovery of Epsilon Indi bb.

Using the revised stellar properties, we recalculate the radii for 107 planet candidates in our sample, and comment on candidates for which the radii change from a previously giant - planet / brown - dwarf / stellar regime to a sub-Jupiter size, or vice versa.

DID N'T LIKE: Thorin's attitude, the rudeness of the dwarves when they first entered the house, Bilbo's leaving on his own (Gandalf didn't come back for him), Radagast the Brown (too goofy, I always pictured a more St. Francis - like character), the way the scene at the end - with Gandalf and the dwarves up in the trees, was totally ruined, and the loss of Bilbo's progression as a character (did he really kill several creatures all ready?