Results 81 to 90 of about 53,034 (302)

The Formation of Brown Dwarfs: Observations

, 2006
We review the current state of observational work on the formation of brown dwarfs, focusing on their initial mass function, velocity and spatial distributions at birth, multiplicity, accretion, and circumstellar disks.
Joergens, Viki, Lada, Charles, Luhman, Kevin L., Muzerolle, James, Pascucci, Ilaria, White, Russel   +5 more
core   +1 more source

Binary frequency of very young brown dwarfs at separations smaller than 3 AU

, 2008
Searches for companions of brown dwarfs by direct imaging mainly probe orbital separations > 3-10 AU. On the other hand, previous radial velocity surveys of brown dwarfs are mainly sensitive to separations smaller than 0.6 AU. It has been speculated that
Ahmic, Basri, Bate, Bate, Boss, Bouy, Burgasser, Close, Comerón, Comerón, Gizis, Goodwin, Guenther, Joergens, Joergens, Joergens, Joergens, Kenyon, Kouwenhoven, Kroupa, Kurosawa, Luhman, Luhman, Maxted, Mizuno, Naylor, Neuhäuser, Neuhäuser, Padoan, Pinfield, Prato, Prato, Reid, Reid, Reipurth, Shatsky, Simon, Stamatellos, Stassun, Sterzik, Umbreit, V. Joergens, Whitworth, Zapatero Osorio   +43 more
core   +1 more source

Composition and Functional Properties of Tender Coconut Water: Effect of Variety and Maturity Stage

Future Postharvest and Food, EarlyView.
The study highlights the effect of coconut variety and maturity stage on tender coconut water's composition and functional properties. Sugars, enzyme activities, antioxidant levels, mineral profile, and flavor profile vary across stages, affecting quality.
Raja Vijayakumar, Suruthi Muthusamy, Shubham Nimbkar, Thirukumaran Ramesh, Aditi Negi, Jeyan Arthur Moses, Vadakkepulppara Ramachandran Nair Sinija   +6 more
wiley   +1 more source

Phase-resolved Hubble Space Telescope WFC3 Spectroscopy of the Weakly Irradiated Brown Dwarf GD 1400 and Energy Redistribution–Irradiation Trends in Six White Dwarf–Brown Dwarf Binaries

The Astrophysical Journal
Irradiated brown dwarfs offer a unique opportunity to bridge the gap between stellar and planetary atmospheres. We present high-quality Hubble Space Telescope/Wide Field Camera 3/G141 phase-resolved spectra of the white dwarf–brown dwarf binary GD 1400 ...
Rachael C. Amaro, Dániel Apai, Yifan Zhou, Joshua D. Lothringer, Sarah L. Casewell, Xianyu Tan, Ben W. P. Lew, Travis Barman, Mark S. Marley, L. C. Mayorga, Vivien Parmentier   +10 more
doaj   +1 more source

The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics From 10-100 AU

, 2019
We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager Exoplanet Survey (GPIES). This subsample includes six detected planets and three brown dwarfs; from these detections and our contrast curves we infer the ...
Ammons, S. Mark, Bailey, Vanessa P., Barman, Travis, Blain, Célia, Bulger, Joanna, Burrows, Adam, Chiang, Eugene, Chilcote, Jeffrey, Cotten, Tara, Czekala, Ian, Dawson, Rebekah Ilene, de Rosa, Robert J., Doyon, Rene, Duchêne, Gaspard, Esposito, Thomas M., Fabrycky, Daniel, Fitzgerald, Michael P., Follette, Katherine B., Fortney, Jonathan J., Gerard, Benjamin L., Goodsell, Stephen J., Graham, James R., Greenbaum, Alexandra Z., Hibon, Pascale, Hinkley, Sasha, Hirsch, Lea A., Hom, Justin, Hung, Li-Wei, Ingraham, Patrick, Kalas, Paul, Konopacky, Quinn, Larkin, James E., Lee, Eve J., Lin, Jonathan W., Macintosh, Bruce, Maire, Jérôme, Marchis, Franck, Marley, Mark S., Marois, Christian, Metchev, Stanimir, Millar-Blanchaer, Maxwell A., Morzinski, Katie M., Nielsen, Eric L., Oppenheimer, Rebecca, Palmer, David, Patience, Jennifer, Perrin, Marshall, Poyneer, Lisa, Pueyo, Laurent, Rafikov, Roman R., Rajan, Abhijith, Rameau, Julien, Rantakyrö, Fredrik T., Ren, Bin, Ruffio, Jean-Baptiste, Saumon, Didier, Savransky, Dmitry, Schneider, Adam C., Sivaramakrishnan, Anand, Song, Inseok, Soummer, Remi, Tallis, Melisa, Thomas, Sandrine, Wang, Jason J., Ward-Duong, Kimberly, Wolff, Schuyler   +65 more
core   +3 more sources

Geochronology of the Whittlesey sedimentary succession, eastern England: The ‘Pompeii’ of the British late Middle Pleistocene to Holocene record

Journal of Quaternary Science, EarlyView.
Abstract The sedimentary succession at Whittlesey preserves a unique British late Middle Pleistocene to Holocene record back to a time equivalent to at least marine oxygen isotope stage 8 (ca. 250 ka). This study builds on previously published sedimentology, geochronology and palaeoecology results to establish 20 sedimentary facies associations, with ...
H. E. Langford, M. D. Bateman, R. M. Briant, D. J. Horne   +3 more
wiley   +1 more source

Reducing response bias in reports of trauma and posttraumatic stress disorder: An application of the nonverbal response card in a survey of youth in Burkina Faso

Journal of Traumatic Stress, EarlyView.
Abstract Response bias for sensitive questions in face‐to‐face interviewer‐administered surveys is a common problem. Our objective was to evaluate the effectiveness of the nonverbal response card (NVRC) in soliciting responses to questions about lifetime trauma exposure and posttraumatic stress disorder (PTSD) symptoms.
David P. Lindstrom, Guy Harling, Mamadou Bountogo, Lucienne Ouermi, Till Bärnighausen   +4 more
wiley   +1 more source

Physical Parameters and Properties of 20 Cold Brown Dwarfs in JWST

The Astrophysical Journal
We present a comprehensive analysis of 20 T and Y dwarfs using spectroscopy from the Near-Infrared Spectrograph (NIRSpec) CLEAR/PRISM and Mid-Infrared Instrument (MIRI) low-resolution spectrometer instruments on the James Webb Space Telescope.
Zhijun Tu, Shu Wang, Jifeng Liu
doaj   +1 more source

Beyond the T Dwarfs: Theoretical Spectra, Colors, and Detectability of the Coolest Brown Dwarfs

, 2003
We explore the spectral and atmospheric properties of brown dwarfs cooler than the latest known T dwarfs. Our focus is on the yet-to-be-discovered free-floating brown dwarfs in the \teff range from $\sim$800 K to $\sim$130 K and with masses from 25 to 1 \
Adam Burrows, Borysow A., David Sudarsky, Delfosse X., Grevesse N., Jonathan I. Lunine, Reid I. N., Stiening R., Wright E.   +8 more
core   +3 more sources

The Initial Mass Function of Low-mass Stars and Brown Dwarfs in the W3 Complex. [PDF]

Astron J, 2021
Huston MJ, Luhman KL.
europepmc   +1 more source