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Optical and UV Spectrum of KQ Pup
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CaII H&K to CaII IRT echelle spectra
This is the third paper of a series aimed at studying the chromosphere of active binary systems using the information provided for several optical spectroscopic features. High... -
Multiplicity among peculiar A stars I.
Radial velocities measured with the Coravel scanner are used to determine the orbits of two Ap stars and of two Am stars. The Ap stars HD 8441 appears to be a triple system... -
Rotation and binary rate among giant F stars
We have tested the hypothesis of Berthet (1991A&A...251..171B) which foresees that Am stars become giant metallic A and F stars (defined by an enhanced value of the... -
BH Vir BV light curves
Photoelectric observations of the short period eclipsing binary BH Vir in B and V bands are presented. Comparing with earlier published observations, we found that there were... -
Radial velocity curve of Sigma Gem
The table contains the radial velocities of the RS CVn star sigma Geminorum measured by cross-correlation using Beta Oph as template from the high-resolution SOFIN spectra... -
Orbits of 7 spectroscopic binaries in multiples
New close sub-systems are discovered in wide physical multiple stars. Elements of spectroscopic orbits are given for the components of quadruple systems ADS 1315C, 3608C, 3824C,... -
Radial velocities of 4 Cepheids
Continued radial velocity observations over several years, have allowed to discover four spectroscopic binary systems among our sample of twenty five galactic Cepheids. Each... -
UBVRI polarization of RS CVn-type binaries
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V1624 Cyg UBV and RV curves
In recent years the idea, first formulated many decades ago, that the Be phenomenon could be causally related to the duplicity of Be stars, has been repeatedly reconsidered from... -
DA DWD candidates based on DESI EDR
Mergers of double white dwarfs (DWDs) are considered significant potential progenitors of type Ia supernovae (SNe Ia), which serve as "standard candles" in cosmology to measure... -
Gaia DR3 WD-MS parameters
Binary stars containing a white dwarf and a main-sequence star, WDMS binaries, can be used to study a wide range of aspects of stellar astrophysics. We build a magnitude-limited... -
BLOeM. Early B dwarfs and giants at Z=0.2
Early B-type stars with initial masses between 8 and 15 solM are frequently found in multiple systems, as evidenced by multi-epoch spectroscopic campaigns in the Milky Way and... -
BLOeM. SMC early B supergiants multiplicity
The blue supergiant (BSG) domain contains a large variety of stars for which the past and future evolutionary paths are still highly uncertain. As binary interaction plays a... -
BLOeM. Oe and Be stars
Rapidly rotating classical OBe stars have been proposed as the products of binary interactions, and the fraction of Be stars with compact companions implies that at least some... -
The local group symbiotic star population
Binary stars are gravitationally bound stellar systems where the evolution of each component can significantly influence the evolution of its companion and the system as a... -
Low-mass red giants volume-limited samp.
Binary hot subdwarf B (sdB) stars are typically produced from low-mass red giant branch (RGB) stars that have lost almost all their envelopes through binary mass transfer while... -
Ellipsoidal and rotational red giant binaries
The latest Gaia Focused Product Release (FPR) provided variability information for ~1000 long-period red giant binaries, including almost ~700 ellipsoidal binary candidates, the... -
Kepler Field with Gaia DR3
The original Kepler mission has delivered unprecedented high-quality photometry. These data have impacted numerous research fields (e.g., asteroseismology and exoplanets), and... -
10 eclipsing binaries radial velocities
Surface brightness-colour relations (SBCRs) are useful tools for predicting the angular diameters of stars. They offer the possibility to calculate precise spectrophotometric...
