More than two hundred and fifty thousand spectroscopic binary or variable star candidates discovered by LAMOST (2019). The radial velocity differences for about 256 000 targets are larger than 10 km/s and they are possible spectroscopic binary or variable candidates (SBVCs). It is found that the detected SBVCs could be classified into four groups. The first group has higher log g ~4.621 and lower T ~4870 K which are mainly cool red dwarf binaries. The second group of SBVCs has log g around 4.171 cm s-2 that includes binaries and pulsating stars such as δ Sct and γ Dor variables. The gravitational accelerations of the third group of SBVCs are higher and some of them are below the zero-age main sequence. They may be contact binaries in which the primary components are losing energy to the secondaries in the common envelopes and are at a special stellar evolutionary stage. The last group is composed of giants or supergiants with log g around 2.461 cm s-2 that may be evolved pulsating stars.
Initial-final mass relation from white dwarfs within 40 pc;
The 40 pc sample of white dwarfs from Gaia.
Our DR3 sample contains 1076 spectroscopically confirmed white dwarfs, with just five candidates within the volume remaining unconfirmed (>99 per cent spectroscopic completeness). Our sample is likely to be incomplete until systematic spectroscopic, photometric and astrometric variability searches are performed for all ≈20000 main-sequence stars within 40 pc.
An Overview of Compact Star Populations and Some of Its Open Problems. we now count on more than 150 known Galactic neutron stars and black hole masses, as well as another 180 objects from binary mergers detected from gravitational-waves by the Ligo-Virgo-KAGRA Collaboration. We focus on Galactic black holes, and offer an updated catalog of 35 black hole masses and orbital parameters.
The Pantheon+ Analysis: Cosmological Constraints (2022). We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from z = 0.001 to 2.26.
A catalogue of low-mass X-ray binaries: 150 sources, 31 new low-mass X-ray binaries in addition to the 119 sources listed in van Paradijs' catalogue. (2001)
An Optical Search for New Outbursting Low Mass X-Ray Binaries (2023). Using Monte Carlo simulations of the Galactic LMXB population, we estimate that 29% of outbursting LMXBs are detectable by ZTF and that 4.4% of LMXBs would be present in the crossmatched X-ray catalogs, giving an estimated Galactic population of 3390.
Accreting Binaries; Nature, formation, and evolution.
Galactic distribution, in Galactic coordinates, of accreting binaries, hosting low-mass (LMXB) and high-mass (HMXB) stars. All accreting binaries known to date are included, based on a catalog of 218 LMXB and 148 HMXB
Каталоги переменных звезд
A First Catalog of Variable Stars Measured by the Asteroid Terrestrial-impact Last Alert System (ATLAS) (2018). About 10% (427000 stars) pass extensive tests designed to screen out spurious variability detections: we label these as “probable” variables. Of these, 214 000 receive specific classifications as eclipsing binaries, pulsating, Mira-type, or sinusoidal variables: these are the “classified” variables. New discoveries among the probable variables number 315000, while 141000 of the classified variables are new, including about 10400 pulsating variables, 2060 Mira stars, and 74700 eclipsing binaries.
The ASAS-SN catalogue of variable stars I: The Serendipitous Survey (2018),
ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020). In Paper I (Jayasinghe+ 2018MNRAS.477.3145J), we present a catalogue of 66179 bright, new variable stars discovered during our search for supernovae, including 27479 periodic variables and 38700 irregular variables. In paper II (Jayasinghe+ 2019MNRAS.486.1907J), We extracted the ASAS-SN light curves of ~412000 variable stars previously discovered by other surveys and in the VSX catalogue. In paper III (Jayasinghe+ 2019MNRAS.485..961J), we extracted the ASAS-SN light curves of ~1.3 million sources within 18deg of the Southern Ecliptic Pole.
Wide-field Infrared Survey Explorer (WISE) Catalog of Periodic Variable Stars (2018). Requiring more than 100 detections for a given object, 50 282 carefully and robustly selected periodic variables are discovered, of which 34 769 (69%) are new. Careful classification of the new variables results in a tally of 21 427 new EW-type eclipsing binaries, 5654 EA-type eclipsing binaries, 1312 Cepheids, and 1231 RR Lyrae. By comparison with known variables available in the literature, we estimate that the misclassification rate is 5% and 10% for short- and long-period variables, respectively.
The Zwicky Transient Facility Catalog of Periodic Variable Stars (2020). We classify 781 602 periodic variables into 11 main types using an improved classification method. Comparison with previously published catalogs shows that 621 702 objects (79.5%) are newly discovered or newly classified, including ~700 Cepheids, ~5000 RR Lyrae stars, ~15000 δ Scuti variables, ~350 000 eclipsing binaries, ~100000 long-period variables, and about 150000 rotational variables.
The Catalina Surveys Periodic Variable Star Catalog (2014). We present ~47,000 periodic variables found during the analysis of 5.4 million variable star candidates within a 20,000 deg2 region covered by the Catalina Surveys Data Release-1 (CSDR1). Combining these variables with type ab RR Lyrae from our previous work, we produce an online catalog containing periods, amplitudes, and classifications for ~61,000 periodic variables.
Gaia Data Release 3. Summary of the variability processing and analysis (2023). In total, 10.5 million objects are identified as variable in Gaia DR3 and have associated time series in G, GBP, and GRP and, in some cases, radial velocity time series. The DR3 variable sources subdivide into 9.5 million variable stars and 1 million active galactic nuclei or `quasars'. In addition, supervised classification identified 2.5 million galaxies thanks to spurious variability induced by the extent of these objects.
Gaia Data Release 3. Cross-match of Gaia sources with variable objects from the literature. Our catalogue gathers 7 841 723 Gaia sources, 1.2 million of which are non-variable objects and 1.7 million are galaxies, in addition to 4.9 million variable sources. This represents over 100 variability (sub)types. In total, 152 different input catalogues from the literature were cross-matched with Gaia DR3 in order to find the counterpart sources. See table A.1. Input catalogues.
Gaia collaboration; et al., 2022, Gaia Data Release 3 (Gaia DR3) Part 4 Variability. Variability analysis, together with the underlying epoch photometry, for 10.5 million sources. Apart from classification into 24 variability classes, detailed variability results are provided in separate tables for the following candidates (EAS presentation L. Eyer): Cepheids (15,021 objects); Compact companions (6306 objects); Eclipsing binaries (2,184,477 objects); Long-period variables (1,720,588 objects); Microlensing events (363 objects); Planetary transits (214 objects); RR Lyrae stars (271,779 objects); Short-timescale variables (471,679 objects); Solar-like rotational modulation variables (474,026 objects); Upper-main-sequence oscillators (54,476 objects); Active galactic nuclei (872,228 objects).
15 000 ellipsoidal binary candidates in TESS: Orbital periods, binary fraction, and tertiary companions (2023). We present a homogeneously selected sample of 15 779 candidate binary systems with main sequence primary stars and orbital periods shorter than 5 d. The targets were selected from TESS full-frame image light curves on the basis of their tidally induced ellipsoidal modulation. Spectroscopic follow-up suggests a sample purity of 83±13 per cent.
Eclipsing Binary Stars: the Royal Road to Stellar Astrophysics.
Russell (1948) famously described eclipses as the "royal road" to stellar astrophysics. From photometric and spectroscopic observations it is possible to measure the masses and radii (to 1% or better!), and thus surface gravities and mean densities, of stars in eclipsing binary systems using nothing more than geometry. Adding an effective temperature subsequently yields luminosity and then distance (or vice versa) to high precision. This wealth of directly measurable quantities makes eclipsing binaries the primary source of empirical information on the properties of stars, and therefore a cornerstone of stellar astrophysics. Digging Foundations for the "Royal Road" (2005)
Gaia Data Release 3. The first Gaia catalogue of eclipsing-binary candidates (2023). the first Gaia catalogue of eclipsing-binary candidates containing 2 184 477 sources with brightnesses from a few magnitudes to 20 mag in the Gaia G-band and covering the full sky. The catalogue is restricted to orbital periods larger than 0.2 days.
Переменные в данных космических обсерваторий: Kepler, TESS, CoRoT и т.д.
Planets, candidates, and binaries from the CoRoT/Exoplanet programme. The CoRoT transit catalogue (2018). The CoRoT space mission observed 163 665 stars over 26 stellar fields in the faint star channel. The exoplanet teams detected a total of 4123 transit-like features in the 177 454 light curves. From the initial list of transit-like features, we identified and separated 824 false alarms of various kind, 2269 eclipsing binaries among which 616 are contact binaries and 1653 are detached ones, 37 planets and brown dwarfs, and 557 planet candidates.