Results 51 to 60 of about 94,613 (301)

Radio burst statistics for M dwarf flare stars [PDF]

Astronomy and Astrophysics Supplement Series, 1997
We present a critical analysis on the number of bursts near 21 cm from nine dMe flare stars of the solar neighborhood as reported in the literature. We compare our findings with the number of bursts detected with the Arecibo radiotelescope between 1989 and 1993, using a very reliable method to discriminate between stellar and artificial emissions.
M. Abada-Simon, M. Aubier
openaire   +1 more source

Are exoplanets orbiting m dwarfs extreme? [PDF]

, 2019
I gave an invited talk at Extreme Solar Systems IV in REYKJAVIK, ICELAND. However, please note that all talks were officially "invited" according to the organizers.M dwarf stars have long spin-down timescales, long activity lifetimes and persistent ...
Muirhead, Philip
core  

The ability of intermediate-band Stromgren photometry to correctly identify dwarf, subgiant, and giant stars and provide stellar metallicities and surface gravities

, 2010
[Abridged] Several large scale photometric and spectroscopic surveys are being undertaken to provide a more detailed picture of the Milky Way. Given the necessity of generalisation in the determination of, e.g., stellar parameters when tens and hundred ...
A. S. Árnadóttir, Abazajian, Adén, Adén, Alonso, Alonso, Anthony-Twarog, Anthony-Twarog, Arce, Arellano Ferro, Beers, Bell, Bensby, Bond, Bond, Bonfils, Bonifacio, Calamida, Calamida, Carney, Carollo, Chen, Clausen, Clem, Cohen, Cousins, Crawford, Crawford, Edvardsson, Faria, Favata, Feltzing, Ferguson, Flynn, Gilmore, Grebel, Grundahl, Grønbech, Gustafsson, Gustafsson, Haywood, Heiter, Helmi, Hilker, Holmberg, I. Lundström, Ibata, Ivezic, Johnson, Jønch-Sørensen, Kirby, Kotoneva, Landolt, Lee, Lester, Luck, Malyuto, Martell, Martell, Mermilliod, Mishenina, Nissen, Nordström, Ochsenbein, Olsen, Olsen, Olsen, Olsen, Olsen, Olsen, Perry, Perryman, Ramírez, Ramírez, Ramírez, S. Feltzing, Santos, Santos, Santos, Schlegel, Schuster, Schuster, Schuster, Schuster, Schuster, Schuster, Sousa, Strigari, Strömgren, Strömgren, Thorén, Twarog, Twarog, Valenti, van Leeuwen, Vandenberg, VandenBerg, von Hippel, von Hippel, Woolf, Yasuda, Yong, York, Önehag   +103 more
core   +1 more source

The Future of Research in Cognitive Robotics: Foundation Models or Developmental Cognitive Models?

Advanced Robotics Research, EarlyView.
Research in cognitive robotics founded on principles of developmental psychology and enactive cognitive science would yield what we seek in autonomous robots: the ability to perceive its environment, learn from experience, anticipate the outcome of events, act to pursue goals, and adapt to changing circumstances without resorting to training with ...
David Vernon
wiley   +1 more source

The Orbital Eccentricity–Radius Relation for Planets Orbiting M Dwarfs

The Astronomical Journal
The orbital eccentricity–radius relation for small planets is indicative of the predominant dynamical sculpting processes during late-stage orbital evolution. Previous studies have shown that planets orbiting Sun-like stars exhibit an eccentricity–radius
Sheila Sagear, Sarah Ballard, Gregory J. Gilbert, Mariangel Albornoz, Christopher Lam   +4 more
doaj   +1 more source

The SDSS White Dwarf - M Star Library

, 2011
to appear in the ASP Conference Series on "Evolution of Compact Binaries" (ESO), Vi\~na del Mar ...
Heller, René, Schwope, Axel D., Østensen, Roy H.   +2 more
openaire   +2 more sources

Substellar Companions to Main Sequence Stars: No Brown Dwarf Desert at Wide Separations

, 2001
We use three field L and T dwarfs which were discovered to be wide companions to known stars by the Two Micron All-Sky Survey (2MASS) to derive a preliminary brown dwarf companion frequency.
Adam Burgasser, Bouvier J., David G. Monet, Duquennoy A., Goldman B., Halbwachs J. L., I. Neill Reid, J. Davy Kirkpatrick, James Liebert, John C. Wilson, John E. Gizis   +10 more
core   +2 more sources

Membership and Multiplicity among Very Low-Mass Stars and Brown Dwarfs in the Pleiades Cluster [PDF]

, 2000
We present near-infrared photometry and optical spectroscopy of very low-mass stars and brown dwarf candidates in the Pleiades open cluster. The membership status of these objects is assessed. Eight objects out of 45 appear to be non-members.
Bailer-Jones C. A. L., Baraffe I., Bouvier J., Bouvier J., Cossburn M. R., D. Barrado y Navascues, Duquennoy A., E. L. Martin, Festin L., G. Basri, Hambly N. C., J. Bouvier, J. Stauffer, K. L. Luhman, M. R. Zapatero Osorio, Martin E. L., Meusinger H., Steele I. A., W. Brandner, Zapatero Osorio M. R., Zapatero Osorio M. R.   +20 more
core   +2 more sources

AutomataGPT: Transformer‐Based Forecasting and Ruleset Inference for Two‐Dimensional Cellular Automata

Advanced Science, EarlyView.
We introduce AutomataGPT, a generative pretrained transformer (GPT) trained on synthetic spatiotemporal data from 2D cellular automata to learn symbolic rules. Demonstrating strong performance on both forward and inverse tasks, AutomataGPT establishes a scalable, domain‐agnostic framework for interpretable modeling, paving the way for future ...
Jaime A. Berkovich, Noah S. David, Markus J. Buehler   +2 more
wiley   +1 more source

Stellar Cycle and Evolution of Polar Spots in an M+WD Binary

The Astrophysical Journal
Stellar activity cycles reveal continuous relaxation and induction of magnetic fields. The activity cycle is typically traced through the observation of cyclic variations in total brightness or Ca H&K emission flux of stars, as well as cyclic variations ...
Xinlin Zhao, Song Wang, Xue Li, Yue Xiang, Fukun Xu, Shenghong Gu, Bing Du, Jifeng Liu   +7 more
doaj   +1 more source