Results 91 to 100 of about 87,580 (344)

L-Band Photometry of L and T Dwarfs

, 2001
We present K- and L-band photometry obtained with the Keck I telescope for a representative sample of L and T dwarfs. These observations were motivated in part by the dominant role water and methane play in shaping the flux near 2 and 3 microns and by the potential use of these bands as indicators of spectral class in the infrared.
Stephens, D. C., Marley, M. S., Noll, K. S., Chanover, N.   +3 more
openaire   +2 more sources

News of Effective Temperatures of L Dwarfs [PDF]

Symposium - International Astronomical Union, 2003
In this work we report recent spectral analyses of L dwarfs and our success in measuring Teff and log(g). Using dust filled atmospheres for early L dwarfs and rained out atmospheres for late L dwarfs we could derive Teff of 1400 to 2000 K for L8 to M9.5 dwarfs respectively.
Andreas Schweitzer, John E. Gizis, France Allard, Peter H. Hauschildt   +3 more
openaire   +1 more source

Subicular Astrocytes Govern Seizure‐Impaired Fear Memory

Advanced Science, EarlyView.
Astrocytes in dorsal subiculum act as a critical modulator of seizure‐associated cognitive dysfunction, operating through a Ca2+‐dependent adenosine‐linked astrocyte‐neuron signaling pathway that disrupts neuronal circuit homeostasis. This research highlights the potential of astrocyte‐targeted interventions as a therapeutic strategy, moving beyond the
Yuying Shao, Jing Xi, Yuhao Sun, Yulan Li, Zhisheng Li, Wangjialu Lu, Jialu Chen, Lin Yang, Fan Fei, Heming Cheng, Li Cheng, Cenglin Xu, Zhuo Huang, Vladimir Parpura, Yi Wang, Zhong Chen   +15 more
wiley   +1 more source

Dust in the Photospheric Environment II. Effect on the Near Infrared Spectra of L and T Dwarfs

, 2004
We report an attempt to interpret the spectra of L and T dwarfs with the use of the Unified Cloudy Model (UCM). For this purpose, we extend the grid of the UCMs to the cases of log g = 4.5 and 5.5.
Eriksson T. S., Kenshi Yanagisawa, Ordal M. A., Ossenkopf V., Tadashi Nakajima, Takashi Tsuji, Tsuji T., Tsuji T.   +7 more
core   +1 more source

A large spectroscopic sample of L and T dwarfs from UKIDSS LAS : peculiar objects, binaries, and space density [PDF]

, 2015
This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record [F.
A. C. Day-Jones, Allard, Allers, Andrews, B. Burningham, Baraffe, Baraffe, Basri, Bastian, Blake, Bouy, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burningham, Burningham, Burningham, Burningham, Burningham, Burrows, Burrows, Caballero, Casewell, Chabrier, Chabrier, Chiu, Clarke, Cruz, Cruz, D. J. Pinfield, Day-Jones, Day-Jones, Day-Jones, de Oliveira, de Oliveira, de Oliveira, Deacon, Deacon, Dehnen, Delorme, Dupuy, Epchtein, F. Marocco, Faherty, Faherty, Faherty, Fan, Gagné, Geballe, Gelino, Gizis, Gomes, Gorlova, Gálvez-Ortiz, H. R. A. Jones, Hawley, Hewett, J. I. Gomes, Joergens, Jones, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Knapp, Kroupa, Kroupa, Kurosawa, L. Smith, Lawrence, Leggett, Leggett, Liu, Liu, Lodieu, Lodieu, Lodieu, Lucas, Luhman, Malo, Malo, Marley, Marocco, Marocco, Marocco, Marocco, Martín, Maxted, McMahon, Metchev, Mihalas, Miller, Murray, P. W. Lucas, Pinfield, Pinfield, Press, R. L. Smart, Reid, Reylé, Robin, Salpeter, Schmidt, Scholz, Scholz, Skrutskie, Stephens, Stumpf, Sumi, Taylor, Tsuji, Vernet, Wright, York, Z. H. Zhang, Zhang, Zhang   +120 more
core   +3 more sources

Kepler And L Dwarfs

, 2014
These are the slides shown.
openaire   +1 more source

Precision Editing of NLRS Improves Effector Recognition for Enhanced Disease Resistance

Advanced Science, EarlyView.
Precision engineering of plant NLR immune receptors enables rational design of enhanced pathogen resistance through mismatched pairing, domain swapping, and targeted mutagenesis. These approaches achieve multi‐fold expansion in recognition breadth while minimizing autoimmunity risks and fitness penalties.
Vinit Kumar, Vishwa I. P. W. A. Kumara, Pradeepa C. G. Bandaranayake, Dong Yawen, Yang‐Yang Gao, Junfeng Liu, Ge‐Fei Hao, Xiu‐Fang Xin   +7 more
wiley   +1 more source

A Chandra X-ray detection of the L dwarf binary Kelu-1: Simultaneous Chandra and Very Large Array observations

, 2007
Magnetic activity in ultracool dwarfs, as measured in X-rays and H$\alpha$, shows a steep decline after spectral type M7-M8. So far, no L dwarf has been detected in X-rays. In contrast, L dwarfs may have higher radio activity than M dwarfs.
Audard, M., Briggs, K. R., Brown, A., Gizis, J. E., Guedel, M., Hodges-Kluck, E., Osten, R. A.   +6 more
core   +2 more sources

Comparing Grid Model Fitting Methodologies for Low-temperature Atmospheres: Markov Chain Monte Carlo versus Random Forest Retrieval

The Astrophysical Journal
The atmospheres of low-temperature stars, brown dwarfs, and exoplanets are challenging to model due to strong molecular features and complex gas and condensate chemistry.
Anna Lueber, Adam J. Burgasser
doaj   +1 more source

A Trypsin‐Like Serine Protease ZmNAL1a Fine‐Tunes Maize Floral Transition and Flowering Time

Advanced Science, EarlyView.
This study identifies a trypsin‐like serine protease, ZmNAL1a, that moves from leaves to the shoot apical meristem. ZmNAL1a promotes the floral transition by degrading TOPLESS‐like corepressor REL2, which thereby enhances the expression of key flowering genes through elevating histone acetylation and relieving REL2–ZmEREBP147‐mediated transcriptional ...
Nan Li, Qiang Ning, Zhen Li, Qian Zhang, Peilu Zhu, Jimin Zhan, Yunfu Li, Zhen Li, Liang Dong, Qing Xiong, Jiahao Liao, Jie Liu, David Jackson, Munenori Kitagawa, Zuxin Zhang, Lei Liu   +15 more
wiley   +1 more source