Results 31 to 40 of about 48,990 (297)

An Investigation of New Brown Dwarf Spectral Binary Candidates From the Backyard Worlds: Planet 9 Citizen Science Initiative

The Astronomical Journal, 2023
We present three new brown dwarf spectral-binary candidates: CWISE J072708.09−360729.2, CWISE J103604.84−514424.4, and CWISE J134446.62−732053.9, discovered by citizen scientists through the Backyard Worlds: Planet 9 project.
Alexia Bravo, Adam C. Schneider, Daniella Bardalez Gagliuffi, Adam J. Burgasser, Aaron M. Meisner, J. Davy Kirkpatrick, Jacqueline K. Faherty, Marc J. Kuchner, Dan Caselden, Arttu Sainio, Les Hamlet, The Backyard Worlds: Planet 9 Collaboration   +11 more
doaj   +1 more source

Where lies the peak of the brown dwarf binary separation distribution ?

, 2008
Searches for companions of brown dwarfs by direct imaging probe mainly 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.
Eric Stempels, Viki Joergens
core   +1 more source

A new benchmark T8-9 brown dwarf and a couple of new mid-T dwarfs from the UKIDSS DR5+ LAS [PDF]

, 2010
Benchmark brown dwarfs are those objects for which fiducial constraints are available, including effective temperature, parallax, age, metallicity. We searched for new cool brown dwarfs in 186 sq.deg.
Allard, Allen, Alonso, Artigau, B. Goldman, Baraffe, Bertin, Bessel, Beuzit, Burgasser, Burgasser, Burningham, Burningham, Burrows, Burrows, C. Clemens, Casali, Chiu, Cushing, Cutri, DeGennaro, Del Burgo, Delfosse, Delorme, Ducourant, Faherty, Goldman, Golimowski, Greiner, Greiner, Hambly, Hawley, Heintz, Helling, Helling, Henry, Hewett, Hodgkin, J. Greiner, Jameson, Kirkpatrick, Kirkpatrick, Lawrence, Leggett, Leggett, Leggett, Leggett, Liu, Lodieu, Lodieu, Looper, Luyten, McLean, Montes, Morales, Morel, Nakajima, Nidever, Perryman, Pinfield, Pinfield, Pojmanski, Robin, Ross, S. Marsat, Salim, Saumon, Schwope, Short, Smart, Stephens, Stephens, T. Henning, Tinney, Tinney, Tsuji, Van Leeuwen, Vrba, Warren, West, West, Zuckerman   +81 more
core   +1 more source

Single‐Cell Metabolic Imaging and Digital Scoring of Fat Tissue Remodeling by Label‐Free Metabolic Microscopy

Advanced Science, EarlyView.
Mid‐infrared optoacoustic microscopy (MiROM) acquires lipid‐ and protein‐ associated vibrational contrast in intact fat tissue without dyes, preserving native tissue architecture. Through lateral and axial segmentation, MiROM tracks intrinsic intracellular changes during postnatal remodeling. A quantitative spatial analysis tool (Q‐SAT) maps white‐ and
Myeongseop Kim, Constantin Berger, Alexander Wolf, Alina Peteranderl, Martin Klingenspor, Vasilis Ntziachristos, Yongguo Li, Miguel A. Pleitez   +7 more
wiley   +1 more source

Binary brown dwarfs in the galactic halo? [PDF]

, 1998
Microlensing events towards the Large Magellanic Cloud entail that a sizable fraction of dark matter is in the form of MACHOs (Massive Astrophysical Compact Halo Objects), presumably located in the halo of the Galaxy.
De Paolis, F., Ingrosso, G., Jetzer, Ph., Roncadelli, M.   +3 more
core   +3 more sources

Plant Genetic Engineering: Technological Pathways, Application Scenarios, and Future Directions

Advanced Science, EarlyView.
This review maps the fast‐evolving landscape of plant genetic engineering, linking enabling platforms with trait‐focused applications in architecture optimization, stress resilience, yield improvement, and quality enhancement. It highlights how genome editing, transgenic strategies, and emerging multi‐gene approaches reshape breeding pipelines, while ...
Peilin Wang, Wenzhi Wang, Dongjiao Wang, Qibin Wu, Youxiong Que   +4 more
wiley   +1 more source

Brown Dwarf Companions to White Dwarfs [PDF]

AIP Conference Proceedings, 2011
Brown dwarf companions to white dwarfs are rare, but recent infra-red surveys are slowly reveal- ing examples. We present new observations of the post-common envelope binary WD0137-349, which reveals the effects of irradiation on the ~ 0.05M* secondary, and new observations of GD 1400 which show that it too is a close, post-comon envelope system.
Matt R. Burleigh, Paul R. Steele, Paul D. Dobbie, Jay Farihi, Ralf Napiwotzki, Pierre F. L. Maxted, Martin A. Barstow, Richard F. Jameson, Sarah L. Casewell, Boris T. Gaensicke, Tom R. Marsh, Sonja Schuh, Horst Drechsel, Ulrich Heber   +13 more
openaire   +2 more sources

Gray Spectral Variability in Three Brown Dwarfs Observed by HST/WFC3 Time-series Observations

The Astrophysical Journal
The L/T transition is a critical evolutionary stage for brown dwarfs and self-luminous giant planets. L/T transition brown dwarfs are more likely to be spectroscopically variable, and their high-amplitude variability probes distributions in their clouds ...
Madalyn F. Chapleski, Yifan Zhou
doaj   +1 more source

The formation of brown dwarfs and low-mass stars by disc fragmentation

, 2008
We suggest that a high proportion of brown dwarfs are formed by gravitational fragmentation of massive, extended discs around Sun-like stars. We argue that such discs should arise frequently, but should be observed infrequently, precisely because they ...
Anthony P. Whitworth, Dimitris Stamatellos, Eric Stempels   +2 more
core   +1 more source

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