Results 11 to 20 of about 12,099 (232)

The Nature and Origins of Sub-Neptune Size Planets. [PDF]

J Geophys Res Planets, 2021
Abstract Planets intermediate in size between the Earth and Neptune, and orbiting closer to their host stars than Mercury does the Sun, are the most common type of planet revealed by exoplanet surveys over the last quarter century. Results from NASA's Kepler mission have revealed a bimodality in the radius distribution of these objects, with a relative
Bean JL, Raymond SN, Owen JE.
europepmc   +2 more sources

Prospects for asteroseismology [PDF]

Astrophysics and Space Science, 2009
The observational basis for asteroseismology is being dramatically strengthened, through more than two years of data from the CoRoT satellite, the flood of data coming from the Kepler mission and, in the slightly longer term, from dedicated ground-based ...
A. Baglin, A. Miglio, A. Moya, A. Weiss, B.L. Popielski, C. Allende Prieto, C. Angulo, C. Angulo, C.S. Rosenthal, C.S. Rosenthal, C.W. Straka, D. Mao, D. Stello, D.A. VandenBerg, D.L. Buzasi, D.O. Gough, D.O. Gough, D.O. Gough, D.O. Gough, D.O. Gough, D.O. Gough, D.O. Gough, D.O. Gough, E. Böhm-Vitense, E. Michel, E. Michel, E.E. Salpeter, F. Bouchy, F. Bouchy, F. Carrier, F. Carrier, G. Grec, G. Houdek, G. Houdek, G. Houdek, G. Houdek, G. Shaviv, G. Walker, Günter Houdek, H. Bruntt, H. Kjeldsen, H. Kjeldsen, H. Kjeldsen, H. Kjeldsen, H. Kjeldsen, H. Otí Floranes, I.W. Roxburgh, I.W. Roxburgh, I.W. Roxburgh, I.W. Roxburgh, I.W. Roxburgh, I.W. Roxburgh, I.W. Roxburgh, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Ridder De, J. Ridder De, J.A. Guzik, J.A. Guzik, J.M. Matthews, J.M. Matthews, J.N. Bahcall, J.W. Harvey, Jørgen Christensen-Dalsgaard, L.H. Li, M. Asplund, M. Asplund, M. Bazot, M. Tassoul, M.-A. Dupret, M.J.P.F.G. Monteiro, M.J.P.F.G. Monteiro, M.P. Mauro Di, M.S. Cunha, N. Baker, N. Grevesse, N.J. Balmforth, N.J. Balmforth, O. Benomar, P. Eggenberger, P. Gaulme, P. Goldreich, R.K. Ulrich, R.P. Butler, S. Basu, S. Basu, S. Basu, S. Basu, S. Basu, S. Basu, S.T. Fletcher, T. Appourchaux, T. Arentoft, T.M. Brown, T.R. Bedding, T.R. Bedding, T.R. Bedding, W. Borucki, W.J. Chaplin, W.J. Chaplin, Y. Lebreton, Y. Lebreton, Y. Osaki, Y.V. Vandakurov   +110 more
core   +4 more sources

Equatorially trapped Rossby waves in radiative stars

Astronomische Nachrichten, Volume 344, Issue 10, December 2023., 2023
Abstract Observations by recent space missions reported the detection of Rossby waves (r‐modes) in light curves of many stars (mostly A, B, and F spectral types) with outer radiative envelope. This article aims to study the theoretical dynamics of Rossby‐type waves in such stars. Hydrodynamic equations in a rotating frame were split into horizontal and
Mariam Albekioni, Teimuraz V. Zaqarashvili, Vasil Kukhianidze, Eka Gurgenashvili, Philippe Bourdin   +4 more
wiley   +1 more source

FRA–A new fast, robust, and automated pipeline for the detection and measurement of solar‐like oscillations in time‐series photometry of red‐giant stars

Astronomische Nachrichten, Volume 344, Issue 5, June 2023., 2023
Abstract We developed, tested, and validated a new Fast, Robust, and Automated (FRA) tool to detect solar‐like oscillations. FRA is based on the detection and measurement of the frequency of maximum oscillation power νmax$$ {\nu}_{\mathrm{max}} $$, without relying on the detection of a regular frequency spacing to guide the search.
Charlotte Gehan, T. L. Campante, M. S. Cunha, F. Pereira   +3 more
wiley   +1 more source

On the application of machine learning in astronomy and astrophysics: A text‐mining‐based scientometric analysis

WIREs Data Mining and Knowledge Discovery, Volume 12, Issue 5, September/October 2022., 2022
This work presents a text‐mining‐based scientometric analysis of the scientific output in the last three decades regarding the use of artificial intelligence and machine learning in the fields of astronomy and astrophysics. Abstract Since the beginning of the 21st century, the fields of astronomy and astrophysics have experienced significant growth at ...
José‐Víctor Rodríguez, Ignacio Rodríguez‐Rodríguez, Wai Lok Woo   +2 more
wiley   +1 more source

Localizing flares to understand stellar magnetic fields and space weather in exo‐systems

Astronomische Nachrichten, Volume 343, Issue 4, May 2022., 2022
Abstract Stars are uniform spheres, but only to first order. The way in which stellar rotation and magnetism break this symmetry places important observational constraints on stellar magnetic fields, and factors in the assessment of the impact of stellar activity on exoplanet atmospheres.
Ekaterina Ilin, Katja Poppenhäger, Julián D. Alvarado‐Gómez   +2 more
wiley   +1 more source

Detection and Optimization of Traffic Networks Based on Voronoi Diagram

Discrete Dynamics in Nature and Society, Volume 2021, Issue 1, 2021., 2021
Traffic peak is an important parameter of modern transport systems. It can be used to calculate the indices of road congestion, which has become a common problem worldwide. With accurate information about traffic peaks, transportation administrators can make better decisions to optimize the traffic networks and therefore enhance the performance of ...
Rui Tao, Jian Liu, Yuqing Song, Rui Peng, Dali Zhang, Jiangang Qiao, Rui Wang   +6 more
wiley   +1 more source

The asteroseismology metacomputer [PDF]

Open Astronomy, 2000
Submitted to Baltic Astronomy, 5 pages, plain TeX, uses balticw ...
Metcalfe Τ. S., Nather R. E.
openaire   +3 more sources

A Synergic Strategy to Characterize the Habitability Conditions of Exoplanets Hosted by Solar-Type Stars

Frontiers in Astronomy and Space Sciences, 2022
We present a new synergic strategy that merges the potential of asteroseismology with solar space weather/climate techniques in order to characterize solar-like stars and their interaction with hosted exoplanets. The method is based on the use of seismic
Raffaele Reda, Raffaele Reda, Maria Pia Di Mauro, Luca Giovannelli, Luca Giovannelli, Tommaso Alberti, Francesco Berrilli, Francesco Berrilli, Enrico Corsaro   +8 more
doaj   +1 more source

Abundance analysis of prime B-type targets for asteroseismology II. B6--B9.5 stars in the field of view of the CoRoT [PDF]

, 2009
The CoRoT satellite is collecting precise time-resolved photometry for tens of asteroseismology targets. To ensure a correct interpretation of the CoRoT data, the atmospheric parameters, chemical compositions, and rotational velocities of the stars must ...
Abt, Abt, Abt, Abt, Abt, Adelman, Adelman, Adelman, Adelman, Adelman, Auvergne, Bagnulo, Baranne, Bertaud, Bychkov, C. Aerts, Castelli, Catalano, Catanzaro, Cenarro, Cowley, Diaz-Cordoves, Dommanget, Dommanget, Durrant, E. Niemczura, Fabricius, Folsom, Frankowski, Frémat, Gies, Gigas, Glagolevskij, Grevesse, Hartkopf, Hauck, Hempel, Horch, Huang, Jeffery, Jenkner, Jomaron, Kaufer, Kazarovets, Kharchenko, Koen, Kudryavtsev, Kukarkin, Kupka, Künzli, Lefever, Leone, Leone, Levato, Makarov, Mason, Moon, Morel, Morel, Morel, Napiwotzki, Neiner, Netopil, Niemczura, North, North, Paunzen, Paunzen, Przybilla, Przybilla, Roby, Ryabchikova, Sargent, Sbordone, Searle, Semenko, Smith, Smith, Smith, Smith, Smith, Solano, Sowell, T. Morel, Takeda, Vogt, Wade, Walther, Whitford   +88 more
core   +15 more sources