Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Salabert David"'
Autor:
Garcia, Rafael A., Breton, Sylvain N., Salabert, David, Tripathy, Sushant C., Jain, Kiran, Mathur, Savita, Panetier, Eva
Publikováno v:
A&A 691, L20 (2024)
Solar magnetic activity follows regular cycles of about 11 years with an inversion of polarity in the poles every 22 years. This changing surface magnetism impacts the properties of the acoustic modes. The acoustic mode frequency shifts are a good pr
Externí odkaz:
http://arxiv.org/abs/2410.23928
Autor:
Mourard, Denis, Berio, Philippe, Pannetier, Cyril, Nardetto, Nicolas, Allouche, Fatme, Bailet, Christophe, Dejonghe, Julien, Geneslay, Pierre, Jacqmart, Estelle, Lagarde, Stéphane, Lecron, Daniel, Morand, Frédéric, Rousseau, Sylvain, Salabert, David, Spang, Alain, Albrecht, Simon, Anugu, Narsireddy, Bourges, Laurent, Brummelaar, Theo A. ten, Creevey, Orlagh, Deheuvels, Sebastien, de Souza, Armando Domiciano, Gies, Doug, Ligi, Roxanne, Mella, Guillaume, Perraut, Karine, Schaefer, Gail, Wittkowski, Markus
Publikováno v:
SPIE Optical and Infrared Interferometry and Imaging VIII, p. 1218308 (2022)
With a possible angular resolution down to 0.1-0.2 millisecond of arc using the 330 m baselines and the access to the 600-900 nm spectral domain, the CHARA Array is ideally configured for focusing on precise and accurate fundamental parameters of sta
Externí odkaz:
http://arxiv.org/abs/2210.09096
Publikováno v:
EPJ Web of Conferences, Vol 152, p 05011 (2017)
For the last few decades the investigation of stellar magnetic activity has been conducted through spectroscopic and spectropolarimetric surveys. This led not only to the detection of magnetic cycles in other stars but also to variable and magnetic a
Externí odkaz:
https://doaj.org/article/12b420c41513487c9cc62152827d65eb
Autor:
Mathur Savita, García Rafael A., Huber Daniel, Regulo Clara, Stello Dennis, Beck Paul G., Houmani Kenza, Salabert David
Publikováno v:
EPJ Web of Conferences, Vol 160, p 05001 (2017)
The Kepler mission has been a success in both exoplanet search and stellar physics studies. Red giants have actually been quite a highlight in the Kepler scene. The Kepler long and almost continuous four-year observations allowed us to detect oscilla
Externí odkaz:
https://doaj.org/article/c170096bb0604e239813988d47091c31
Publikováno v:
EPJ Web of Conferences, Vol 160, p 01007 (2017)
Calibration issues associated to scrambled collateral smear affecting the Kepler short-cadence data were discovered in the Data Release 24 and were found to be present in all the previous data releases since launch. In consequence, a new Data Release
Externí odkaz:
https://doaj.org/article/0db91f9f2b1149dda752ea45c59c7d17
Autor:
Creevey Orlagh, Metcalfe Travis S., Salabert David, Mathur Savita, Schultheis Mathias, García Rafael A., Thévenin Frédéric, Bazot Michaël, Xu Haiying
Publikováno v:
EPJ Web of Conferences, Vol 160, p 03007 (2017)
We present stellar properties of 57 stars from a seismic inference using full-length data sets from Kepler (mass, age, radius, distances). These stars comprise active stars, planet-hosts, solar-analogs, and binary systems. We validate the distances d
Externí odkaz:
https://doaj.org/article/0747b2d929f04206b6309d02938ba8b1
Publikováno v:
Journal of Space Weather and Space Climate, Vol 4, p A15 (2014)
The Kepler mission has been providing high-quality photometric data leading to many breakthroughs in the exoplanet search and in stellar physics. Stellar magnetic activity results from the interaction between rotation, convection, and magnetic field.
Externí odkaz:
https://doaj.org/article/fddd082ef2504ce29544bc2b1ce1182b
Autor:
Creevey, Orlagh, Thévenin, Frédéric, Grundahl, Frank, Corsaro, Enrico, Andersen, Mads F., Antoci, Victoria, Bigot, Lionel, Collet, Remo, Pallé, Pere L., Pichon, Bernard, Salabert, David
Publikováno v:
2019sf2a.conf..425C
We have been monitoring the metal-poor Population II giant, HD 122563, for radial velocity variations since 2016 using the SONG telescope on Tenerife. We have detected the global seismic quantity, numax, which provides information related to the stel
Externí odkaz:
http://arxiv.org/abs/2005.13883
Autor:
Creevey, Orlagh, Grundahl, Frank, Thévenin, Frédéric, Corsaro, Enrico, Pallé, P. L., Salabert, David, Pichon, Bernard, Collet, Remo, Bigot, Lionel, Antoci, Victoria, Andersen, Mads F.
Publikováno v:
A&A 625, A33 (2019)
The nearby metal-poor giant HD122563 is an important astrophysical laboratory for which to test stellar atmospheric and interior physics. It is also a benchmark star for which to calibrate methods to apply to large scale surveys. Recently it has been
Externí odkaz:
http://arxiv.org/abs/1902.02657
Autor:
Jain, Kiran, Tripathy, Sushanta, Hill, Frank, Salabert, David, Garcia, Rafael A., Broomhall, Anne-Marie
We analyze Sun-as-a-star observations spanning over solar cycles 22 -- 24 from the ground-based network BiSON and solar cycles 23 -- 24 collected by the space-based VIRGO and GOLF instruments on board the {\it SoHO} satellite. Using simultaneous obse
Externí odkaz:
http://arxiv.org/abs/1805.05298