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Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories [PDF]

open access: diamondEuropean Physical Journal C: Particles and Fields, 2019
We studied herein the mass and the radius of brown dwarfs predicted by beyond Horndeski (BH) and Eddington-inspired Born-Infeld (EiBI) gravity theories by numerically solving the modified non-relativistic hydrostatic equations of both theories. We used a
A. S. Rosyadi   +3 more
doaj   +2 more sources

Brown dwarfs as Galactic chronometers [PDF]

open access: bronzeProceedings of the International Astronomical Union, 2008
AbstractBrown dwarfs are natural clocks, cooling and dimming over time due to insufficient core fusion. They are also numerous and present in nearly all Galactic environments, making them potentially useful chronometers for a variety of Galactic studies.
Adam J. Burgasser
openalex   +3 more sources

V3101 Cyg: A Cataclysmic Variable Born with a Brown Dwarf Donor [PDF]

open access: gold
Ramirez S   +7 more
europepmc   +2 more sources

Hotter than Expected: Hubble Space Telescope (HST)/WFC3 Phase-resolved Spectroscopy of a Rare Irradiated Brown Dwarf with Strong Internal Heat Flux

open access: yesThe Astrophysical Journal, 2023
With infrared flux contrasts larger than typically seen in hot Jupiter, tidally locked white dwarf–brown dwarf binaries offer a superior opportunity to investigate atmospheric processes in irradiated atmospheres. NLTT5306 is such a system, with a M _BD =
Rachael C. Amaro   +10 more
doaj   +1 more source

Keragaan vegetatif dan generatif pada fase pembungaan awal kelapa Genjah kopyor asal kultur embrio di Bogor, Jawa Barat

open access: yesMenara Perkebunan, 2022
The performance of kopyor Dwarf coconuts from embryo culture in the field has not been reported. This study was conducted to determine the difference in vegetative and generative performances of three fruit color phenotypes (brown, green, and yellow) of ...
M. Eko Riyo Bayu Prasetyo   +2 more
doaj   +1 more source

Intercomparison of Brown Dwarf Model Grids and Atmospheric Retrieval Using Machine Learning

open access: yesThe Astrophysical Journal, 2023
Understanding differences between substellar spectral data and models has proven to be a major challenge, especially for self-consistent model grids that are necessary for a thorough investigation of brown dwarf atmospheres.
Anna Lueber   +6 more
doaj   +1 more source

Correlation and Path Coefficient Analysis of Kopyor Dwarf Coconut (Cocos nucifera L.)

open access: yesCORD, 2017
Breeding programs of kopyor dwarf coconut require a population base with high genetic diversity especially for characters that relate to fruit production.
Miftahorrachman   +2 more
doaj   +1 more source

Brown Dwarf Retrievals on FIRE!: Atmospheric Constraints and Lessons Learned from High Signal-to-noise Medium-resolution Spectroscopy of a T9 Dwarf

open access: yesThe Astrophysical Journal, 2023
Brown dwarf spectra offer vital testbeds for our understanding of the chemical and physical processes that sculpt substellar atmospheres. Recently, atmospheric retrieval approaches have been successfully applied to low-resolution ( R ∼ 100) spectra of L,
Callie E. Hood   +3 more
doaj   +1 more source

Atmospheric circulation of exoplanets

open access: yes地球与行星物理论评, 2023
To date, more than 5000 exoplanets and more than 2000 brown dwarfs have been confirmed, which shows rich diversities in many aspects. With the rapid growth of the planet family, both observational and theoretical research on exoplanet atmosphere is ...
Yuchen Lian, Yongyun Hu
doaj   +1 more source

Exploring brown dwarf disks [PDF]

open access: yesAstronomy & Astrophysics, 2001
4 pages, 4 figures, A&A Letters in ...
NATTA A, TESTI L
openaire   +4 more sources

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