Results 21 to 30 of about 60 (57)

A Metallicity Classification System for T Subdwarfs

open access: yes
We present a metallicity classification system for T dwarfs based on previously identified metal-poor brown dwarfs and new discoveries made by the Backyard Worlds: Planet 9 project. We define three metallicity classes in the near-infrared to augment the current dwarf sequence: mild subdwarfs (d/sdT), subdwarfs (sdT), and extreme subdwarfs (esdT), with ...
openaire   +1 more source

Accurate mass and radius determinations of a cool subdwarf in an eclipsing binary. [PDF]

open access: yesNat Astron, 2019
Rebassa-Mansergas A   +6 more
europepmc   +1 more source

Models of very-low-mass stars, brown dwarfs and exoplanets. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2012
Allard F, Homeier D, Freytag B.
europepmc   +1 more source

The Evolution of Compact Binary Star Systems. [PDF]

open access: yesLiving Rev Relativ, 2014
Postnov KA, Yungelson LR.
europepmc   +1 more source

Globular cluster ages. [PDF]

open access: yesProc Natl Acad Sci U S A, 1998
Jimenez R.
europepmc   +1 more source

The age of the universe. [PDF]

open access: yesProc Natl Acad Sci U S A, 1997
Spergel DN, Bolte M, Freedman W.
europepmc   +1 more source

Home - About - Disclaimer - Privacy