- ID:
- ivo://CDS.VizieR/I/80
- Title:
- Catalog of 5268 Standard Stars, Normal System N30
- Short Name:
- I/80
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalog was constructed primarily to assist in the reduction and interpretation of planetary observations, particularly those made in the nineteenth century. The new catalog was considered necessary because the only fundamental catalogs available at the time (FK3, GC) have mean epochs around 1900, and over the period of approximately fifty years, positional accuracies had deteriorated from cumulative effects of proper motion inaccuracies. The ADC version of the data file was prepared from the original file by reformatting and incorporating changes to effect uniformity in the data fields. The notes file was created at the ADC by keying the information directly to disk storage. Cross checks were performed to assure that all stars flagged as having notes have entries in the notes file and that all notes are flagged in the data file.
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- ID:
- ivo://CDS.VizieR/J/ApJ/607/426
- Title:
- Catalog of white dwarfs in SDSS-DR1
- Short Name:
- J/ApJ/607/426
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the full spectroscopic white dwarf and hot subdwarf sample from the Sloan Digital Sky Survey (SDSS) First Data Release, DR1. We find 2551 white dwarf stars of various types, 240 hot subdwarf stars, and an additional 144 objects we have identified as uncertain white dwarf stars. Of the white dwarf stars, 1888 are nonmagnetic DA types and 171 are nonmagnetic DBs. The remaining (492) objects consist of all different types of white dwarf stars: DO, DQ, DC, DH, DZ, hybrid stars such as DAB, etc., and those with nondegenerate companions. We fit the DA and DB spectra with a grid of models to determine the T_eff_ and logg for each object. For all objects, we provide coordinates, proper motions, SDSS photometric magnitudes, and enough information to retrieve the spectrum/image from the SDSS public database. This catalog nearly doubles the known sample of spectroscopically identified white dwarf stars. In the DR1 imaged area of the sky, we increase the known sample of white dwarf stars by a factor of 8.5. We also comment on several particularly interesting objects in this sample.
- ID:
- ivo://CDS.VizieR/J/AJ/144/102
- Title:
- Catalog of wide companions to Hipparcos stars
- Short Name:
- J/AJ/144/102
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A catalog of common-proper-motion (CPM) companions to stars within 67pc of the Sun is constructed based on the SUPERBLINK proper-motion survey. It contains 1392 CPM pairs with angular separations 30"<{rho}<1800", relative proper motion between the two components less than 25mas/yr, and magnitudes and colors of the secondaries consistent with those of dwarfs in the (M_V_, V-J) diagram. In addition, we list 21 candidate white dwarf CPM companions with separations under 300", about half of which should be physical. We estimate a 0.31 fraction of pairs with red dwarf companions to be physical systems (about 425 objects), while the rest (mostly wide pairs) are chance alignments. For each candidate companion, the probability of a physical association is evaluated. The distribution of projected separations s of the physical pairs between 2kAU and 64kAU follows f(s){prop.to}s^-1.5^, which decreases faster than Opik's law. We find that solar-mass dwarfs have no less than 4.4%+/-0.3% companions with separations larger than 2kAU, or 3.8%+/-0.3% per decade of orbital separation in the 2-16kAU range. The distribution of mass ratio of those wide companions is approximately uniform in the 0.1<q<1.0 range, although we observe a dip at q=~0.5 which, if confirmed, could be evidence of bimodal distribution of companion masses. New physical CPM companions to two exoplanet host stars are discovered.
- ID:
- ivo://CDS.VizieR/I/45
- Title:
- Catalogue de Zimmerman
- Short Name:
- I/45
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This Catalogue was created for geodetical purposes, mainly for the determination of the latitude by Talkott's method. It contains all stars up to 6 vis. mag. from -10 to +90 degrees. It is composed of 1334 "geodetic" stars and 1623 "Pulkovo" stars. The "geodetic" stars were observed on 5 observatories (Pulkovo, GAISH, Kazan, Nikolaev and Tashkent) by differential methods: each star was observed 8 times in the system of "Pulkovo" stars, during years 1934-1939. The Catalogue of 1623 "Pulkovo" Stars was observed in the years approx. 1910-1925 in Pulkovo, Alger, Babelsberg, Washington, Greenwich, Cape, Nicolaev, Paris and Uccle, mainly by absolute methods. There are corrections to FK3 for each star.
- ID:
- ivo://CDS.VizieR/J/MNRAS/435/2161
- Title:
- Catalogue of bright (K<9) M dwarfs
- Short Name:
- J/MNRAS/435/2161
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Using the Position and Proper Motion Extended-L (PPMXL) catalogue, we have used optical and near-infrared colour cuts together with a reduced proper motion cut to find bright M dwarfs for future exoplanet transit studies. PPMXL's low proper motion uncertainties allow us to probe down to smaller proper motions than previous similar studies. We have combined unique objects found with this method to that of previous work to produce 8479 K<9 M dwarfs. Low-resolution spectroscopy was obtained of a sample of the objects found using this selection method to gain statistics on their spectral type and physical properties. Results show a spectral-type range of K7-M4V. This catalogue is the most complete collection of K<9 M dwarfs currently available and is made available here.
- ID:
- ivo://CDS.VizieR/J/A+A/635/A193
- Title:
- Catalogue of hot subdwarf stars DR2
- Short Name:
- J/A+A/635/A193
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In light of substantial new discoveries of hot subdwarfs by ongoing spectroscopic surveys and the availability of new all-sky data from ground-based photometric surveys and the Gaia mission Data Release 2, we compiled an updated catalogue of the known hot subdwarf stars.
- ID:
- ivo://CDS.VizieR/J/A+A/438/1163
- Title:
- Catalogue of Open Cluster Data (COCD)
- Short Name:
- J/A+A/438/1163
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalogue is a result of studies of wide neighborhoods of 513 open clusters and 7 compact associations carried out in high precision homogeneous all sky catalogue ASCC-2.5 (Kharchenko, 2001, Cat. <I/280>). On the basis of data on about 33000 possible members (including about 10000 most probable ones) and homogeneous methods of cluster parameter determination the angular sizes of cluster cores and coronae, cluster heliocentric distances, mean proper motions, mean radial velocities and ages were established and collected in the COCD. These include cluster distances for 200 clusters, average cluster radial velocities for 94 clusters, and cluster ages for 195 clusters derived for the first time. Clusters in the catalogue are sorted by right ascension J2000 order. The Open Cluster Diagrams Atlas (OCDA) presents a set of open cluster diagrams used for the determination of parameters of 513 open clusters and 7 compact associations, and is intended to illustrate the quality of the constructed cluster membership (Kharchenko et al., 2004, Cat. <J/AN/425/740>), and the accuracy of the derived cluster parameters (this paper). Every diagram presents relation between various stellar data from all sky catalogue ASCC-2.5 (Kharchenko 2001, Cat. <I/280>) in area of the specific cluster. There are five diagrams provided for every cluster in the Atlas: the area map, the density profile, the vector point diagram, the magnitude equation diagram, and the color-magnitude diagram. The OCDA consists of 520 PostScript plots stored as gzipped files (i.e. one file per cluster).
- ID:
- ivo://CDS.VizieR/I/306A
- Title:
- Catalogue of stars with high-proper motions. V2.
- Short Name:
- I/306A
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Catalogue of stars with high-proper motions (>=0.04arcsec/yr) has been compiled using original definitions from catalogue FONAC1.1, the data of catalogues Hipparcos, Tycho-2, UCAC2(up to +40 degrees in declination and going up to +52 degrees in some areas), CMC (STAR 11), PPM, NPM1, NPM2, XZ80Q, Pul-3, Pul2, NLTT, LHS, GCVS, Lowell Proper Motion, Bruce Proper Motion as well as the data of about 770 other published sources. The list consist of 555200 such stars with limiting magnitude 16 (up to 17 for companions in multiple systems) in a declination zone from -2.5 to +90 degrees. Besides astrometric parameters (equatorial coordinates, proper motions, estimations of stars magnitudes) the catalogue includes some astrophysical characteristics (magnitudes in UBVRIJHK system, radial velocities, spectra, luminosity class, metallicity [Fe/H] or [M/H]; flags of multiple system, of variable star and other). For convenience of usage the original numbers of stars from different cataloques the author's lists of stars and basic sources are given too. Very offen the same star being met in different catalogues has a various identification. Cross-identifications of such stars were carried out (Ivanov, 2008, Cat. IV/30). At present the catalogue includes codes of 63 catalogues and author's lists of stars. The stars in the catalogue are arranged by right ascension; information on each star is recorded in a digital integer form with one line including 308 symbols. Because of the presence of additional information (some values of star magnitude definition, radial velocities of stars etc.) there was an increase in the number of lines for each star. Therefore the total number of lines consist of 618250 (Ivanov, 2008KFNT...24..480G). The values of right ascension, declination, magnitude, radial velocities and other parameters are written out with accuracy of their definition in sources. If the values of the parameters for a concrete star taken from various sources differ within the limits of 0.01-0.02 (in star magnitudes), 1km/s (in radial velocities), 0.1 (in metallicity), their averaging were carried out. For multiple systems the values of angles and distances from central star up to companions were updated according to the new information. Beginning the second line there are blanks in the columns of declination (B1950.0, J2000.0), proper motion, epoch if star information is recorded in several lines. These values were written out if additional accurate or strongly different ones from the other coordinates and proper motions in corresponding columns for J2000.0 were available. The number of the source, coordinates and proper motions originated from, has been written mainly in the last column assigned for the number (pos. 35-38). Values of right ascension (B1950.0) for the multiline star are identical. Catalogue is regularly supplemented.
- ID:
- ivo://CDS.VizieR/J/A+A/548/A97
- Title:
- Catalogue of variable stars in open clusters
- Short Name:
- J/A+A/548/A97
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the first catalogue of known variable stars in open cluster regions and with up to two times the given cluster radius. This gives basic information about the distribution of variable stars in cluster fields for the complete sky.
- ID:
- ivo://CDS.VizieR/J/A+A/654/A107
- Title:
- Catalogues of Blue Horizontal Branch Stars
- Short Name:
- J/A+A/654/A107
- Date:
- 22 Feb 2022
- Publisher:
- CDS
- Description:
- Blue horizontal-branch stars evolve from low-mass stars that have completed their main-sequence lifetimes and undergone a helium flash at the end of their red-giant phase. As such, blue horizontal-branch stars are very old objects that can be used as markers in studies of the Galactic structure and formation history. To create a clean sky catalogue of blue horizontal-branch stars, we cross-matched the Gaia data release 2 (DR2) dataset with existing reference catalogues to define selection criteria based on Gaia DR2parameters. Following the publication of Gaia early data release 3 (EDR3), these methods were verified and subsequently applied to this latest release. Previous catalogues of blue horizontal-branch stars were developed using spectral analyses or were restricted to individual globular clusters. The purpose of this catalogue is to identify a set of blue horizontal-branch star candidates that have been selected using photometric and astrometric observations and exhibits a low contamination rate. This has been deemed important as the success of the Gaia mission has changed the way that targets are selected for large-scale spectroscopic surveys, meaning that far fewer spectra will be acquired for blue horizontal-branch stars in the future unless they are specifically targeted. We cross-matched reference blue horizontal-branch datasets with the Gaia DR2 database and defined two sets of selection criteria. Firstly, in Gaia DR2 - colour and absolute G magnitude space, and secondly, in Gaia DR2 - colour and reduced proper motion space. The main-sequence contamination in both subsets of the catalogue was reduced, at the expense of completeness, by concentrating on the Milky Way's Galactic halo, where relatively young main-sequence stars were not expected. The entire catalogue is limited to those stars with no apparent neighbours within 5 arcsec. These methods were verified and subsequently applied to theGaia Early Data Release 3 (EDR3). We present a catalogue, based on Gaia EDR3, of 57377 blue horizontal-branch stars. The Gaia EDR3 parallax was used in selecting 16794 candidates and the proper motions were used to identify a further 40583 candidates.