Results 121 to 130 of about 6,740 (303)

Infrared Colors of L and T Dwarfs

, 2001
We discuss the behaviour of the JHKL'M' colors of L and T dwarfs, based on photometric and spectroscopic data obtained at the United Kingdom Infrared Telescope in Hawaii. We have measured the first accurate M' photometry for L and T dwarfs. The K-M' colors of T dwarfs are much bluer than predicted by published models, suggesting that CO may be more ...
Leggett, S. K., Golimowski, D. A., Fan, X., Geballe, T. R., Knapp, G. R.   +4 more
openaire   +2 more sources

Enabling the study of gene function in gymnosperms: Virus‐induced gene silencing in Ephedra tweedieana

Applications in Plant Sciences, EarlyView.
Abstract Premise As the sister clade to angiosperms, extant gymnosperms are crucial for reconstructing ancestral gene regulatory networks in seed plants. This highlights the need for model systems representing each of their distinct lineages. However, tools to quickly and effectively investigate gene function in gymnosperms are still limited due to the
Anthony G. K. Garcia, Jo Trang Bùi, Todd P. Michael, Stefanie M. Ickert‐Bond, Verónica S. Di Stilio   +4 more
wiley   +1 more source

Methane Opacities in T Dwarf Atmospheres

, 2002
4 pages, 2 figures, uses newpasp.sty, to be published ...
Homeier, D., Hauschildt, P. H., Allard, F.   +2 more
openaire   +2 more sources

The Impact of Irradiation on the Radius and Thermal Evolution of Transiting Brown Dwarfs

The Astrophysical Journal
Masses and radii of transiting brown dwarfs can be measured directly, in contrast to isolated field brown dwarfs, whose mass and radius inferences are model dependent.
Sagnick Mukherjee, Jonathan J. Fortney, Theron W. Carmichael, C. Evan Davis, Daniel P. Thorngren   +4 more
doaj   +1 more source

Weather on Other Worlds. II. Survey Results: Spots are Ubiquitous on L and T Dwarfs

, 2015
We present results from the Weather on Other Worlds Spitzer Exploration Science program to investigate photometric variability in L and T dwarfs, usually attributed to patchy clouds.
Burgasser, Adam, Artigau, Étienne, Plavchan, Peter, Marley, Mark S., Apai, Dániel, Radigan, Jacqueline, Goldman, Bertrand, Metchev, Stanimir A., Flateau, Davin, Heinze, Aren   +9 more
core   +1 more source

Real‐time monitoring of root dielectric properties for assessing crop plant damage caused by foliar application of glyphosate

Applications in Plant Sciences, EarlyView.
Abstract Premise There is a knowledge gap regarding how foliar injury and restricted water uptake can be detected by measuring root dielectric response. This pot study nondestructively evaluated the efficiency of real‐time dielectric measurement to monitor the effects of glyphosate spraying.
Imre Cseresnyés, Anna Füzy, Tünde Takács   +2 more
wiley   +1 more source

A Survey of Model Fits to Brown Dwarf Spectra Through the L–T Sequence

The Astronomical Journal
We fit archival near-IR spectra of ∼300 brown dwarfs with atmosphere models from the Sonora and Phoenix groups. Using the parameters of the best-fit models as estimates for the physical properties of the brown dwarfs in our sample, we have performed a ...
Savanah K. Turner, Denise C. Stephens, Conner B. Scoresby, Josh A. Miller   +3 more
doaj   +1 more source

Two late-T dwarfs at kiloparsec distances revealed by JWST UNCOVER survey [PDF]

We conducted a search for brown dwarf candidates in a James Webb Space Telescope deep field around A2744 to investigate the space density of these objects at kiloparsec distances. Our methodology employed an initial selection based on photometric colours,
Galvez-Ortiz, M. C., Zhou, S. Y., Peng, H. H., Li, D. H., Jones, H. R. A., Zhang, Z. H.   +5 more
core   +1 more source

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

Infrared Classification of L and T Dwarfs

, 2001
We use new and published medium resolution 0.6--2.5 $μ$m spectra of L and T dwarfs to develop a unified classification system for both of these new spectral classes. Two indices of the system at 1.2 $μ$m and 1.5 $μ$m are based on nearby absorption bands of water vapor and two are associated with methane bands near 1.6 $μ$m and 2.2 $μ$m.
Geballe, T. R., Knapp, G. R., Leggett, S. K., Fan, X., Golimowski, D. A.   +4 more
openaire   +2 more sources