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CP stars catalog (roAp, He-weak, He-rich)
To enlarge our data base of chemically peculiar stars, we compiled published data concerning the He-weak and He-rich stars observed by high-resolution spectroscopy techniques... -
Heliocentric radial velocities of R CrB
Radial-velocity observations made on more than a thousand nights are presented for the type star of the R Coronae Borealis (RCB) class. There are four principal sources: the... -
Rotational properties of mCP stars
The magnetic chemically peculiar (mCP) stars of the upper main sequence exhibit strong, globally organized magnetic fields that are inclined to the rotational axis and... -
Parameters for the 172 {lambda} Boo stars
The evolutionary status of the chemically peculiar class of {lambda} Boo stars has been intensely debated. It is now agreed that the {lambda} Boo phenomenon affects A stars of... -
APOGEE N-rich stars in inner Galaxy
Formation of globular clusters (GCs), the Galactic bulge, or galaxy bulges in general is an important unsolved problem in Galactic astronomy. Homogeneous infrared observations... -
Line list and abundance errors
In recent years, the R-Process Alliance (RPA) has conducted a successful search for stars that are enhanced in elements produced by the rapid neutron-capture (r-)process. In... -
Elemental abundance analyses IV.
Using new CASLEO echelle spectrograms, we extended our elemental abundances of the sharp-lines Mercury-Manganese star {mu} Lep, 14 Hya, {kappa} Cnc, HR 4487, 28 Her, and HR... -
Element abundances of 4 metal-poor stars
The oldest stars in the Milky Way are metal-poor with [Fe/H]<-1.0, and they show peculiar elemental abundances compared to solar. The relative variations of the chemical... -
New ACV variables in the ZTF
The manifestation of surface spots on magnetic chemically peculiar (mCP) stars is most commonly explained by the atomic diffusion theory, which requires a calm stellar... -
LAMOST DR4 New mercury-manganese stars
The present work presents our efforts at identifying new mercury-manganese (HgMn/CP3) stars using spectra obtained with the Large Sky Area Multi-Object Fiber Spectroscopic... -
Magnetic peculiar stars elemental abundances
Temperature dependance of the abundances of the chemical elements Si, Ca, Cr and Fe in the atmospheres of normal, metallic-line (Am), magnetic peculiar (Ap) and pulsating... -
UBV observations of HD 179821
The photoelectric and photographic observations of the supergiant HD 179821 with a large infrared excess, a candidate for protoplanetary objects during 1899-1999 are presented. -
UBV observations of post-AGB supergiants
Systematic UBV observations of six variable post-AGB supergiants in 1991-1999 are presented. -
Variability of peculiar star HD 108
The results of fifteen-year-long observations of optical spectra and BVR photoelectric photometry of the runaway star HD 108 are presented. -
Catalog of magnetic stars
Magnetic fields are significant in the structure and evolution of stars. We present a comprehensive catalog of 1784 known magnetic stars, detailing their identifications, HD... -
M Dwarf catalog of LAMOST DR1
We present a spectroscopic catalog of 93 619 M dwarfs from the first data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) general survey.... -
lambda Boo star membership evaluations
The literature on the {lambda} Boo stars has grown to become somewhat heterogenous, as different authors have applied different criteria across the UV, optical and infrared... -
Hogg 16 peculiar stars
The study of chemically peculiar (CP) stars in open clusters provides valuable information about their evolutionary status. Their detection can be performed using the Delta-a... -
Effective temperatures of CP stars
A new list is presented of effective temperatures estimated for about 700 chemically peculiar stars from the photometric parameters, calibrated with the temperatures determined... -
Catalog of magnetic CP stars (2015)
The paper presents magnetic field measurements and physical parameters for 96 stars. Observations were carried out in 2015 with the 6-m BTA telescope using the Main Stellar...