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Early disc dispersal in close binaries
Young (<600Myr) low-mass stars (M<~1M_{sun}_) of equal mass exhibit a distribution of rotation periods. At the very early phases of stellar evolution, this distribution is... -
ONC stars masses from literature
ALMA observations of the Serpens South star-forming region suggest that stellar protoclusters may be completely mass segregated at birth. Independent observations also suggest... -
Masses and luminosities for 342 stars
We present revised basic astrophysical stellar parameters: the masses, luminosities, ages, and radii for 342 stars from the PennState-Torun Centre for Astronomy Planet Search.... -
PTPS stars. III. The evolved stars sample
We present the complete spectroscopic analysis of 455 stars observed within the Penn State - Torun Centre for Astronomy Planet Search (PTPS) with the High Resolution... -
Exoplanet hosts/field stars age consistency
Transiting planets around stars are discovered mostly through photometric surveys. Unlike radial velocity surveys, photometric surveys do not tend to target slow rotators,... -
G and K giant stars stellar parameters
We have obtained precise radial velocities for a sample of 373 G and K type giants at Lick Observatory regularly over more than 12 years. Planets have been identified around 15... -
Orbits of visual binaries and dynamical masses
Orbital binary stars are essential objects for determining dynamical and physical properties of stars through a combined analysis of photometric and astrometric data. We... -
Parameters of DA white dwarfs in SDSS-DR1
The SDSS Data Release 1 includes 1833 DA white dwarfs (WDs) and forms the largest homogeneous sample of WDs. This sample provides the best opportunity to study the statistical... -
RIJHK photometry of VLM objects near eps Ori
Coordinates and photometry of very low mass objects near epsilon Ori are presented. The RIJHK photometry of these objects is consistent with membership of the young Ori OB Ib... -
Mass segregation in open clusters
On the basis of the best available member list and duplicity information, we have studied the radial structure of Praesepe and of the very young open cluster NGC 6231. We have... -
F & G solar neighbourhood stars new ages
New ages are computed for the stars from the Edvardsson et al. (1993, Cat. ) data set. The revised values are systematically larger toward older ages (t>4Gyr), while they are... -
Masses of Pleiades members
On the basis of the best available member list and duplicity information, we have studied the radial distribution of 270 stars and multiple systems earlier than K0 in the... -
Mass-luminosity relation of low-mass stars
To construct the MLR, empirical data for 56 stars in 30 low mass multiple systems, main sequence components of spectral class M0 and later were collected and processed. We... -
TESS monitoring campaign of low-mass flare stars
A 20s cadence Transiting Exoplanet Survey Satellite monitoring campaign of 226 low-mass flare stars during Cycle 3 recorded 3792 stellar flares of >=10^32^erg. We explore the... -
Photospheric parameters of CARMENES stars
The new CARMENES instrument comprises two high-resolution and high-stability spectrographs that are used to search for habitable planets around M dwarfs in the visible and... -
OB stars in N206 in the LMC
Context. Clusters or associations of early-type stars are often associated with a "superbubble" of hot gas. The formation of such superbubbles is caused by the feedback from... -
PTPS stars IV.
Our knowledge of the intrinsic parameters of exoplanets is as precise as our determinations of their stellar hosts parameters. In the case of radial velocity searches for...
