A major obstacle to interpreting the rotation period distribution for main-sequence stars from Kepler mission data has been the lack of a precise evolutionary...
-
PublicaciónRotation of Solar Analogs Crossmatching Kepler and Gaia DR2
-
PublicaciónSpot activity and circumstellar matter in II Peg.
Infrared and V band photometry of the RS CVn system II Peg, carried out in 1984 and 1986, has been analysed with a simple model in order to follow the evolution...
-
CharlaStellar activity blurring our insight into the properties of exoplanets
Stellar magnetic activity generates astrophysical noise on the collected data in the quest for what might be called Earth 2.0. This noise poses obstacles and...
-
PublicaciónStellar Characterization and Radius Inflation of Hyades M-dwarf Stars from the APOGEE Survey
We present a spectroscopic analysis of a sample of 48 M-dwarf stars (0.2 M ⊙ < M < 0.6 M ⊙) from the Hyades open cluster using high-resolution H-band spectra...
-
PublicaciónSurface Rotation and Photometric Activity for Kepler Targets. II. G and F Main-sequence Stars and Cool Subgiant Stars
Dark magnetic spots crossing the stellar disk lead to quasiperiodic brightness variations, which allow us to constrain stellar surface rotation and photometric...
-
PublicaciónThe active phase of the symbiotic star BF Cygni
The activity phase of BF Cygni discovered in May 1989 and which lasted about two years is examined. The UV emission lines, usually strong during quiescence...
-
PublicaciónThe Evolution of Rotation and Magnetic Activity in 94 Aqr Aa from Asteroseismology with TESS
Most previous efforts to calibrate how rotation and magnetic activity depend on stellar age and mass have relied on observations of clusters, where isochrones...
-
PublicaciónThe He I D3 5876 A line as an activity and structural indicator in F-type Hyades stars
The first results of a study of F-type MS stars using the He I D3 absorption feature at 5876 A as an indicator of stellar activity and structure are presented...
-
PublicaciónTOI-4562b: A Highly Eccentric Temperate Jupiter Analog Orbiting a Young Field Star
We report the discovery of TOI-4562b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters (<700 Myr). This...