Results 11 to 20 of about 111,632 (351)

SCExAO/CHARIS Spectroscopic Characterization of Cloudy L/T Transition Companion Brown Dwarf HIP 93398 B

The Astrophysical Journal
Brown dwarfs with measured dynamical masses and spectra from direct imaging are benchmarks that anchor substellar atmosphere cooling and evolution models.
Briley L. Lewis, Yiting Li, Aidan Gibbs, Michael P. Fitzgerald, Timothy Brandt, Daniella Bardalez Gagliuffi, Qier An, Minghan Chen, Rachel Bowens-Rubin, Maïssa Salama, Julien Lozi, Rebecca Jensen-Clem, Ben Mazin   +12 more
doaj   +2 more sources

Lightning and charge processes in brown dwarf and exoplanet atmospheres. [PDF]

Philos Trans A Math Phys Eng Sci, 2019
Helling C, Rimmer PB.
europepmc   +3 more sources

Irradiated brown dwarfs

, 2013
We have observed the post common envelope binary WD0137-349 in the near infrared $J$, $H$ and $K$ bands and have determined that the photometry varies on the system period (116 min).
Burleigh, M. R., Casewell, S. L., Dobbie, P. D., Lawrie, K. A., Maxted, P. F. L., Napiwotzki, R.   +5 more
core   +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

The 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, Dániel Apai, Yifan Zhou, Ben W. P. Lew, Sarah L. Casewell, L. C. Mayorga, Mark S. Marley, Xianyu Tan, Joshua D. Lothringer, Vivien Parmentier, Travis Barman   +10 more
doaj   +1 more source

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

Menara 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, Imron Riyadi, Sumaryono   +2 more
doaj   +1 more source

Search for brown-dwarf companions of stars [PDF]

, 2010
The discovery of 9 new brown-dwarf candidates orbiting stars in the CORALIE and HARPS radial-velocity surveys is reported. New CORALIE radial velocities yielding accurate orbits of 6 previously-known hosts of potential brown-dwarf companions are ...
Baranne, Bean, Benedict, Bouchy, Bouchy, Burrows, Butler, Casertano, Chabrier, Correia, D. Naef, D. Queloz, D. Ségransan, da Silva, Deleuil, Delfosse, Duquennoy, Endl, F. Pepe, Fischer, Forveille, Galland, Girardi, Goldin, Grether, Halbwachs, Halbwachs, Han, Hatzes, Hummel, J. Sahlmann, Jenkins, Konacki, Lane, Liu, Luhman, M. Marmier, M. Mayor, Marcy, Marcy, Martioli, Mayor, Mayor, Mayor, Minniti, Moutou, Muterspaugh, N. C. Santos, Naef, Naef, Nidever, Omiya, Patel, Pepe, Perrier, Perryman, Perryman, Pourbaix, Pourbaix, Pourbaix, Pourbaix, Queloz, Reffert, S. Udry, S. Zucker, Santos, Santos, Santos, Santos, Santos, Santos, Sousa, Sozzetti, Ségransan, Tamuz, Tinney, Tokovinin, Torres, Udry, Udry, Udry, van Leeuwen, Wittenmyer, Wright, Zucker, Zucker   +85 more
core   +1 more source

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

The 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, Daniel Kitzmann, Chloe E. Fisher, Brendan P. Bowler, Adam J. Burgasser, Mark Marley, Kevin Heng   +6 more
doaj   +1 more source

The Galactic disk mass-budget : II. Brown dwarf mass-function and density [PDF]

, 2001
In this paper, we extend the calculations conducted previously in the stellar regime to determine the brown dwarf IMF in the Galactic disk. We perform Monte Carlo calculations taking into account the brown dwarf formation rate, spatial distribution and ...
Chabrier G., Cuby J. G., Duquennoy A., Gilles Chabrier, Halbwachs J. L., Haywood M., Scalo J. M.   +6 more
core   +2 more sources

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

CORD, 2017
Breeding programs of kopyor dwarf coconut require a population base with high genetic diversity especially for characters that relate to fruit production.
Miftahorrachman, Sukmawati Mawardi, Hengky Novarianto3   +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

The 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, Jonathan J. Fortney, Michael R. Line, Jacqueline K. Faherty   +3 more
doaj   +1 more source