WISE

Page 2 of 2 Previous  1, 2

View previous topic View next topic Go down

Re: WISE

Post by Lazarus on 9th January 2013, 2:50 am

A 0.520 Jupiter mass object with a temperature 250400 K. May be either a brown dwarf or a free-floating planet.

The Coldest Brown Dwarf (Or Free Floating Planet)?: The Y Dwarf WISE 1828+2650
http://arxiv.org/abs/1301.1669
avatar
Lazarus
dG star
dG star

Number of posts : 2845
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: WISE

Post by Lazarus on 11th March 2013, 5:40 pm

The Closest Star System Found in a Century
http://science.psu.edu/news-and-events/2013-news/Luhman3-2013

WISE J104915.57-531906.1, a brown dwarf binary at 2.00.15 parsecs. Primary is L81, secondary near the L/T transition.

The best estimate of the distance (ignoring the error bars) puts the binary slightly further away than Barnard's Star.
avatar
Lazarus
dG star
dG star

Number of posts : 2845
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: WISE

Post by Sirius_Alpha on 11th March 2013, 6:26 pm

WOw!
Edit: Now on arXiv.
http://arxiv.org/abs/1303.2401

_________________
Caps Lock: Cruise control for 'Cool'!
avatar
Sirius_Alpha
Admin
Admin

Number of posts : 3494
Location : Earth
Registration date : 2008-04-06

View user profile http://solar-flux.forumandco.com/

Back to top Go down

Re: WISE

Post by Lazarus on 23rd March 2013, 8:01 am

More on WISE J104915.57-531906.1
http://arxiv.org/abs/1303.5345

Offers also some more memorable designations for the system: "Luhman 16" (its preliminary WDS designation) or maybe "Luhman-WISE 1".
avatar
Lazarus
dG star
dG star

Number of posts : 2845
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: WISE

Post by jyril on 23rd March 2013, 8:25 am

Why not Luhman's Star, like other nearby stars named after the people who discovered or recognized them?

_________________
The universe is not only stranger than we imagine, it is stranger than we can imagine.
avatar
jyril
Planetesimal
Planetesimal

Number of posts : 133
Registration date : 2008-06-09

View user profile

Back to top Go down

Re: WISE

Post by Lazarus on 23rd March 2013, 9:16 am

It'd be a bit weird calling it "Luhman's Star" when it is two stars, no?
avatar
Lazarus
dG star
dG star

Number of posts : 2845
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: WISE

Post by jyril on 23rd March 2013, 3:04 pm

Heh, that's true...

_________________
The universe is not only stranger than we imagine, it is stranger than we can imagine.
avatar
jyril
Planetesimal
Planetesimal

Number of posts : 133
Registration date : 2008-06-09

View user profile

Back to top Go down

Re: WISE

Post by Stalker on 23rd March 2013, 3:59 pm

A binary star is still "a" star

_________________
avatar
Stalker
Jovian
Jovian

Number of posts : 529
Age : 26
Location : Paris, France
Registration date : 2008-06-16

View user profile http://exoplanetes.wetpaint.com/

Back to top Go down

Re: WISE

Post by Lazarus on 3rd April 2013, 3:44 pm

Seem to be quite a lot of papers coming out on the arXiv about this one...

Radial velocities confirm the system is bound, spectral types given as L81 and T12. Also gives estimated masses for assumed ages of 1 Gyr and 10 Gyr.

Characterization of the Nearby L/T Binary Brown Dwarf WISE J104915.57-531906.1 at 2 Parsecs from the Sun
http://arxiv.org/abs/1303.7171

---

The system is a flux-reversal binary: the secondary is brighter than the primary at 0.95 1.3 microns. Spectral types given as L7.5 and T0.5.

Resolved Near-Infrared Spectroscopy of WISE J104915.57-531906.1AB: A Flux-Reversal Binary at the L dwarf/T dwarf Transition
http://arxiv.org/abs/1303.7283

---

Variability on Luhman 16B (they use the Luhman 16 designation throughout most of the paper instead of the WISE one), probably weather-related.

Fast-evolving weather for the coolest of our two new substellar neighbours
http://arxiv.org/abs/1304.0481
avatar
Lazarus
dG star
dG star

Number of posts : 2845
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: WISE

Post by Sponsored content


Sponsored content


Back to top Go down

Page 2 of 2 Previous  1, 2

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum