Results 71 to 80 of about 71,830 (288)

Mid-infrared followup of cold brown dwarfs: Diversity in age, mass and metallicity

EPJ Web of Conferences, 2011
We use Spitzer IRAC 3.6–8.0 μm photometry of late-type T dwarfs to investigate various trends which can aid the planning and interpretation of infrared (IR) surveys for the coldest T or Y dwarfs. Brown dwarfs with effective temperature (Teff)50% of their
Pinfield D.J., Jones H.R.A., Warren S.J., Marley M.S., Saumon D., Burningham B., Leggett S.K., Smart R.L.   +7 more
doaj   +1 more source

Crossmatching of high-proper motion L, T, and Y brown dwarfs with large photometric surveys

Open Astronomy, 2023
L, T, and Y brown dwarf (BD) exploration is a topical issue. First, the transition boundary between planets and BDs is not fully understood yet. Second, there is a phenomenon called the L/T-transition.
Avdeeva Aleksandra S., Karpov Sergey V., Malkov Oleg Yu.   +2 more
doaj   +1 more source

A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE: Discovery of Seven Nearby Objects Including Two Candidate Spectroscopic Variables

, 2013
We present initial results from a wide-field (30,000 deg^2) search for L/T transition brown dwarfs within 25 pc using the Pan-STARRS1 and WISE surveys. Previous large-area searches have been incomplete for L/T transition dwarfs, because these objects are
Aller, Kimberly M., Best, William M. J., Burgett, W. S., Chambers, K. C., Deacon, Niall R., Dupuy, Trent J., Hodapp, K. W., Kaiser, N., Kudritzki, R. -P., Liu, Michael C., Magnier, Eugene A., Morgan, J. S., Price, P. A., Redstone, Joshua, Tonry, J. L., Wainscoat, R. J.   +15 more
core   +1 more source

1 um Excess Sources in the UKIDSS - I. Three T Dwarfs in the SDSS Southern Equatorial Stripe [PDF]

, 2011
We report the discovery of two field brown dwarfs, ULAS J0128-0041 and ULAS J0321+0051, and the rediscovery of ULAS J0226+0051 (IfA 0230-Z1), in the Sloan Digital Sky Survey (SDSS) southern equatorial stripe. They are found in the course of our follow-up
Fujiwara, M., Furusawa, K., Matsuoka, Y., Miyake, N., Murata, K. L., Nagayama, T., Omori, K., Peterson, B. A., Suenaga, T., Suzuki, D., Wada, K.   +10 more
core   +2 more sources

El castillo encantado de Walt Disney

Con A de Animación, 2022
La animación 2D es un terreno fascinante que muestra mundos increíblemente creativos y envuelve una amplia gama de campos profesionales. La arquitectura juega un papel destacado en animación, dando cabida a narrativas mediante todo tipo de complejas ...
Irene Ferrer Rosillo
doaj   +1 more source

The unbiased frequency of planetary signatures around single and binary white dwarfs using ${\it Spitzer}$ and ${\it Hubble}$ [PDF]

, 2019
This paper presents combined ${\it Spitzer}$ IRAC and ${\it Hubble}$ COS results for a double-blind survey of 195 single and 22 wide binary white dwarfs for infrared excesses and atmospheric metals.
Farihi, Jay, Gänsicke, Boris T., Swan, Andrew, Wilson, Thomas G.   +3 more
core   +2 more sources

Control of Covalent Bond Enables Efficient Magnetic Cooling

Advanced Materials, EarlyView.
Giant and reversible magnetocaloric effect (MCE) is achieved by tuning covalency through sub‐unit‐cell chemical engineering, establishing a novel design principle for effective hysteresis control in magnetocaloric materials. Abstract Magnetic cooling, harnessing the temperature change in matter when exposed to a magnetic field, presents an energy ...
Xin Tang, Yoshio Miura, Noriki Terada, Enda Xiao, Shintaro Kobayashi, Allan Döring, Terumasa Tadano, Andres Martin‐Cid, Takuo Ohkochi, Shogo Kawaguchi, Yoshitaka Matsushita, Tadakatsu Ohkubo, Tetsuya Nakamura, Konstantin Skokov, Oliver Gutfleisch, Kazuhiro Hono, Hossein Sepehri‐Amin   +16 more
wiley   +1 more source

The Brown-dwarf Atmosphere Monitoring (BAM) Project II: Multi-epoch monitoring of extremely cool brown dwarfs

, 2015
With the discovery of Y dwarfs by the WISE mission, the population of field brown dwarfs now extends to objects with temperatures comparable to those of Solar System planets.
Bulger, J., De Rosa, R. J., Morley, C., Patience, J., Pont, F., Rajan, A., Ward-Duong, K., Wilson, P. A., Windhorst, R.   +8 more
core   +2 more sources

Aqueously Upcycled Lignin with Emergent Tribonegativity for Skin‐Integrated Triboelectronics

Advanced Materials, EarlyView.
Aqueously upcycled lignin is transformed into a printable ink that self‐assembles into a nanotextured surface during printing with the highest reported biopolymer‐based tribonegativity. The resulting skin‐integrated triboelectric sensor enables high‐fidelity cardiovascular monitoring and objective mental workload classification, demonstrating a ...
Robert Ccorahua‐Santo, Mi Li, Yi Zheng, Wenzhuo Wu   +3 more
wiley   +1 more source

The Sonora Substellar Atmosphere Models. VI. Red Diamondback: Extending Diamondback with SPHINX for Brown Dwarf Early Evolution

The Astrophysical Journal
We extend the Sonora Diamondback brown dwarf evolution models to higher effective temperatures to treat the evolution of younger, higher-mass objects. Due to an upper temperature limit of T _eff  =  2400 K in the original Sonora Diamondback model grid ...
C. Evan Davis, Jonathan J. Fortney, Aishwarya Iyer, Sagnick Mukherjee, Caroline V. Morley, Mark S. Marley, Michael Line, Philip S. Muirhead   +7 more
doaj   +1 more source