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Optical classification of BZG objects
In the blazar catalog BZCAT the objects are divided into 4 types: BZB, BZQ, BZG, and BZU. In this paper BZG objects are studied in order to determine their physical nature. Of... -
The Alma catalogue of OB stars - II.
We cross-match the Alma catalogue of OB stars with Gaia DR2 astrometry and photometry as a first step towards producing a clean sample of massive stars in the solar... -
Colour and spectral index from the SLUGGS survey
As part of the SAGES Legacy Unifying Globulars and GalaxieS (SLUGGS) survey, we stack 1137 Keck DEIMOS (Deep Imaging Multi-Object Spectrograph) spectra of globular clusters from... -
Metallicity calibrations for UBV photometry
Calibrations are presented here for metallicity ([Fe/H]) in terms of the ultraviolet excess, [{Delta}(U-B) at B-V=0.6, hereafter D0.6], and also for the absolute visual... -
Absolute magnitude of Globular Cluster
We test whether the peak absolute magnitude MV(TO) of the Globular Cluster Luminosity Function (GCLF) can be used for reliable extragalactic distance determination. Starting... -
FGK dwarfs from LAMOST DR7 and Gaia DR3 and Kepler
The empirical relations between rotation period, chromospheric activity, and age can be used to estimate stellar age. To calibrate these relations, we present a catalog,... -
Carbon stars from LAMOST DR7
Carbon stars are excellent kinematic tracers of galaxies and play important roles in understanding the evolution of the Galaxy. Therefore, it is worthwhile to search for them in... -
JWST z=4-10 galaxies mass-metallicity relations
We present the evolution of the mass-metallicity (MZ) relation at z=4-10 derived with 135 galaxies identified in JWST/NIRSpec data taken from the three major public spectroscopy... -
HST/STIS low-resolution stellar library
In order to provide fundamental stellar spectra that extend into the UV, Hubble Space Telescope's Space Telescope Imaging Spectrograph targeted 556 stars via proposals GO9088,... -
Early-type dwarf galaxies in the local universe
We present an extensive catalog of 5405 early-type dwarf (dE) galaxies located in the various environments, i.e., clusters, groups, and fields, of the local universe... -
LAMOST Quasar Survey DR6-DR9
We report the fourth installment in the series of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) quasar survey, which includes quasars observed between... -
Opt. spectra of blue MIR objects in LMC
We present low-resolution optical spectra and classifications of 92 blue objects with mid-infrared excesses in the Large Magellanic Cloud. The majority of these objects were... -
SDSS-IV MaNGA: pyPipe3D data for 10000 galaxies
We present here the analysis performed using the pyPipe3D pipeline for the final MaNGA data set included in the Sloan Digital Sky Survey data release 17. This data set comprises... -
GOLDRUSH. IV. z~3-7 galaxies
We present new measurements of rest-UV luminosity functions and angular correlation functions from 4,100,221 galaxies at z~2-7 identified in the Subaru/Hyper Suprime-Cam survey... -
LCs of RR Lyrae stars from TESS
The Transiting Exoplanet Survey Satellite (TESS) space telescope is collecting continuous, high-precision optical photometry of stars throughout the sky, including thousands of... -
TNOs from the full six years of DES
We present a search for outer solar system objects in the 6yr of data from the Dark Energy Survey (DES). The DES covered a contiguous 5000deg^2^ of the southern sky with ~80000... -
Short period eclipsing binaries from Kepler data
During the primary Kepler mission, between 2009 and 2013, about 150,000 preselected targets were observed with a 29.42 minute long cadence. However, a survey of background stars... -
The PTF core-collapse SN host-galaxy sample. I.
Several thousand core-collapse supernovae (CCSNe) of different flavors have been discovered so far. However, identifying their progenitors has remained an outstanding open... -
Ks absolute magnitudes from LAMOST for OB stars
We present a data-driven method to estimate absolute magnitudes for O- and B-type stars from the LAMOST spectra, which we combine with Gaia DR2 parallaxes to infer distance and... -
MIR outbursts in nearby SDSS gal. (MIRONG). I.
Optical time-domain astronomy has grown rapidly in the past decade, but the dynamic infrared sky is rarely explored. Aiming to construct a sample of mid-infrared outbursts in...
