Results 51 to 60 of about 111,632 (351)

The Formation of Brown Dwarfs as Ejected Stellar Embryos [PDF]

, 2001
We conjecture that brown dwarfs are substellar objects because they have been ejected from small newborn multiple systems which have decayed in dynamical interactions.
Armitage P. J., Armitage P. J., Bo Reipurth, Boffin H. M. J., Bonnell I. A., Burkert A., Cameron A., Cathie Clarke, Clarke C. J., Clarke C. J., Comeron F., de la Fuente Marcos R., Goldman B., Halbwachs J. L., Hall S. M., Herbig G. H., Kohler R., Kroupa P., Larson R. B., Larson R. B., McDonald J. M., McDonald J. M., Pringle J. E., Reipurth B., Smith K. W., Sterzik M. F., Sterzik M. F., van Albada T. S., Watkins S. J., Watkins S. J.   +29 more
core   +2 more sources

BROWN DWARF DISKS WITH ALMA

The Astrophysical Journal, 2014
15 pages, 10 figures, accepted for publication in ...
L. Ricci, L. Testi, A. Natta, A. Scholz, I. de Gregorio-Monsalvo, A. Isella   +5 more
openaire   +5 more sources

Tooth row allometry in domestic rabbits and nondomestic lagomorphs: Evidence for a decoupling of body and tooth row size changes in evolutionary time

The Anatomical Record, EarlyView.
Domestic rabbits of different body sizes differ disproportionately in the length of their tooth row or the length of their diastema. Abstract In various domestic mammals, smaller breeds tend to have proportionally larger teeth, whereas this is not a universal trend across mammals.
Ursina L. Fasciati, Christine Böhmer, Stefanie Ohlerth, Marcus Clauss   +3 more
wiley   +1 more source

The one that got away: a unique eclipse in the young brown dwarf Roque 12

The Open Journal of Astrophysics, 2020
We report the discovery of a deep, singular eclipse of the bona fide brown dwarf Roque 12, a substellar member of the Pleiades. The eclipse was 0.6mag deep, lasted 1.3h, and was observed with two telescopes simultaneously in October 2002.
Aleks Scholz, Dirk Froebrich , Koraljka Muzic, Jochen Eislöffel   +3 more
doaj   +1 more source

The Ultra Cool Brown Dwarf Companion of WD 0806-661: Age, Mass, and Formation Mechanism

, 2011
We have combined multi-epoch images from the Infrared Side Port Imager on the CTIO 4-meter telescope to derive a 3-sigma limit of J=21.7 for the ultra cool brown dwarf companion to WD 0806-661 (GJ 3483).
Melis, Carl, Rodriguez, David R., Song, Inseok, Zuckerman, Ben   +3 more
core   +1 more source

An Eccentric Brown Dwarf Eclipsing an M dwarf

The Astronomical Journal, 2022
Abstract We report the discovery of an M = 67 ± 2M J brown dwarf transiting the early M dwarf TOI-2119 on an eccentric orbit (e = 0.3362 ± 0.0005) at an orbital period of 7.200861 ± 0.000005 days. We confirm the brown dwarf nature of the transiting companion using a combination of ground-based and space-based photometry
Caleb I. Cañas, Suvrath Mahadevan, Chad F. Bender, Noah Isaac Salazar Rivera, Andrew Monson, Corey Beard, Jack Lubin, Paul Robertson, Arvind F. Gupta, William D. Cochran, Connor Fredrick, Fred Hearty, Sinclaire Jones, Shubham Kanodia, Andrea S. J. Lin, Joe P. Ninan, Lawrence W. Ramsey, Christian Schwab, Guđmundur Stefánsson   +18 more
openaire   +2 more sources

Are there morpho‐acoustic patterns of adaptation in nonhuman primate ears? Testing the role of ecology and habitat in shaping ear morphology and function

The Anatomical Record, EarlyView.
Abstract Analysis of the variation in the bony structures of the inner and middle ear provides critical insights into functional morphology, as well as adaptive morphology across primates. In this study, we investigated whether ear morphology patterns are related to the ecological characteristics of species and their habitats to test two acoustic ...
Myriam Marsot, Rémi Laffont, Émilie Steimetz, Patricia Balaresque, Sébastien Couette   +4 more
wiley   +1 more source

SOLES XII. The Aligned Orbit of TOI-2533 b, a Transiting Brown Dwarf Orbiting an F8-type Star

The Astronomical Journal
Brown dwarfs occupy a middle ground in mass space between gaseous giant planets and ultracool dwarf stars, and the characterisation of their orbital orientations may shed light on how these neighbouring objects form.
Thiago Ferreira dos Santos, Malena Rice, Xian-Yu Wang, Songhu Wang   +3 more
doaj   +1 more source

Deriving the true mass of an unresolved Brown Dwarf companion to an M-Dwarf with AO aided astrometry*

EPJ Web of Conferences, 2011
From radial velocity (RV) detections alone one does not get all orbital parameters needed to derive the true mass of a non-transiting, unresolved substellar companion to a star.
Kürster M., Meyer E.
doaj   +1 more source

Mass Production of 2021 KMTNet Microlensing Planets. III. Analysis of Three Giant Planets

The Astronomical Journal, 2022
We present the analysis of three more planets from the KMTNet 2021 microlensing season. KMT-2021-BLG-0119Lb is a ∼6 M _Jup planet orbiting an early M dwarf or a K dwarf, KMT-2021-BLG-0192Lb is a ∼2 M _Nep planet orbiting an M dwarf, and KMT-2021-BLG ...
In-Gu Shin, Jennifer C. Yee, Andrew Gould, Kyu-Ha Hwang, Hongjing Yang, Ian A. Bond, (Leading Authors), Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Youn Kil Jung, Yoon-Hyun Ryu, Yossi Shvartzvald, Weicheng Zang, Sang-Mok Cha, Dong-Jin Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, (The KMTNet Collaboration), Fumio Abe, Richard Barry, David P. Bennett, Aparna Bhattacharya, Hirosane Fujii, Akihiko Fukui, Yuki Hirao, Stela Ishitani Silva, Yoshitaka Itow, Rintaro Kirikawa, Iona Kondo, Naoki Koshimoto, Yutaka Matsubara, Sho Matsumoto, Shota Miyazaki, Yasushi Muraki, Arisa Okamura, Greg Olmschenk, Clément Ranc, Nicholas J. Rattenbury, Yuki Satoh, Takahiro Sumi, Daisuke Suzuki, Taiga Toda, Paul . J. Tristram, Aikaterini Vandorou, Hibiki Yama, (The MOA Collaboration)   +50 more
doaj   +1 more source