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771. The Roma BZCAT - 5th edition
ID:
ivo://CDS.VizieR/VII/274
Title:
The Roma BZCAT - 5th edition
Short Name:
VII/274
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Roma-BZCAT is now at the 5th Edition which contains coordinates and multi-frequency data of 3561 sources, about 30% more than in the 1st edition, either confirmed blazars or exhibiting characteristics close to this type of sources. With respect to the previous editions, this new edition has relevant changes in the sources' classification and has a new format for the notes in the tables. We emphasize that all the sources in the Roma-BZCAT have a detection in the radio band. Moreover, a complete spectroscopic information is published and could be accessed by us for all of them, with the exception of BL Lac candidates. Consequently, peculiar sources as the so called "radio quiet BL Lacs", which are reported in some other catalogues, are not included here because of possible contamination with hot stars and other extragalactic objects.
772. The star catalogue of Wilhelm IV
ID:
ivo://CDS.VizieR/J/A+A/649/A112
Title:
The star catalogue of Wilhelm IV
Short Name:
J/A+A/649/A112
Date:
22 Feb 2022
Publisher:
CDS
Description:
We analyse a manuscript star catalogue by Wilhem IV, Landgraf von Hessen-Kassel from 1586. From measurements of altitudes and of angles between stars, given in the catalogue, we find that the measurement accuracy averages 26 arcsec for eight fundamental stars, compared to 49 arcsec of the measurements by Brahe. The computation in converting altitudes to declinations and angles between stars to celestial position is very accurate, with errors negligible with respect to the measurement errors. Due to an offset in the position of the vernal equinox the positional error of the catalogue is slightly worse than that of Brahe's catalogue, but when correction is made for the offset -- which was known to 17th century astronomers -- the catalogue is more accurate than that of Brahe. We provide machine-readable Tables of the catalogue.
773. The Stromlo-APM Redshift Survey IV
ID:
ivo://CDS.VizieR/J/ApJS/107/201
Title:
The Stromlo-APM Redshift Survey IV
Short Name:
J/ApJS/107/201
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Stromlo-APM Redshift Survey consists of 1797 galaxies with b(J)<17.15 selected randomly at a rate of 1 in 20 from Automated Plate Measurement (APM) scans. The survey covers a solid angle of 1.3sr (4300 square degrees) in the south galactic cap. Redshifts have been measured for 1790 (99.6%) of the galaxies. The median galaxy recession velocity is 15,300 km/s and so the volume probed is approximately V=1.38 million Mpc^3/h^3.
774. The supercluster-void network. I.
ID:
ivo://CDS.VizieR/J/A+AS/123/119
Title:
The supercluster-void network. I.
Short Name:
J/A+AS/123/119
Date:
21 Oct 2021
Publisher:
CDS
Description:
We use a compilation of redshifts of rich clusters by Andernach, Tago and Stengler-Larrea (1996, in preparation) to determine superclusters of rich clusters up to a redshift of z=0.12. Superclusters were searched for with a clustering algorithm, using a neighbourhood radius of 24h^-1^Mpc (h is the Hubble constant in units of 100km/s/Mpc). The catalogue contains 220 superclusters of rich clusters, of which 90 superclusters have been determined for the first time. Table A2 gives the supercluster number, its multiplicity, centre coordinates, a list of member clusters and identifications with the catalogue by Einasto et al. (1994MNRAS.269..301E).
775. The Tycho Reference Catalogue
ID:
ivo://CDS.VizieR/I/250
Title:
The Tycho Reference Catalogue
Short Name:
I/250
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Tycho Reference Catalogue (TRC) contains high-quality positions and proper motions for 990182 stars of the Tycho Catalogue. The proper motions were derived from Tycho positions and Astrographic Catalogue positions reduced to the Hipparcos system. The median accuracy of the TRC position components is 40 mas at J1991.25. The median accuracy of the proper motion is about 2.5 mas/yr. Systematic errors are less than about 1.0 mas(/yr). The quality of the proper motions in TRC is assessed by comparison with the Hipparcos and Tycho Catalogues. Comparison with the recent ACT Catalogue which is based on an independent reduction of the same observations as used for constructing the TRC is reported.
776. The UGC isolated galaxy pair catalog
ID:
ivo://CDS.VizieR/J/other/AstBu/71.270
Title:
The UGC isolated galaxy pair catalog
Short Name:
J/other/AstBu/71
Date:
21 Oct 2021
Publisher:
CDS
Description:
The present paper is devoted to the construction of a catalog of isolated galaxy pairs from the Uppsala Galaxy Catalog (UGC), using accurate radial velocities. The UGC lists 12 921 galaxies to {delta}>-2:30 and is complete to an apparent diameter of 1{arcmin}. The criteria used to define the isolated galaxy pairs are based on velocity, interdistance, reciprocity and isolation information. A peculiar investigation has allowed to gather very accurate radial velocities for pair members, from high quality HI and optical measurements (median uncertainty on velocity differences 10km/s). Our final catalog contains 1005 galaxy pairs with {rho}>2.5, of which 509 have {rho}>5 (50% of the pairs, i.e. 8% of the UGC galaxies) and 273 are highly isolated with {rho}>10 (27% of the pairs, i.e. 4% of the UGC galaxies). Some global properties of the pair catalog are given.
777. The Virgo Cluster Catalog (VCC)
ID:
ivo://CDS.VizieR/J/AJ/90/1681
Title:
The Virgo Cluster Catalog (VCC)
Short Name:
J/AJ/90/1681
Date:
21 Oct 2021
Publisher:
CDS
Description:
The present catalog of 2096 galaxies within an area of about 140{deg}^2^ approximately centered on the Virgo cluster should be an essentially complete listing of all certain and possible cluster members, independent of morphological type. Cluster membership is essentially decided by galaxy morphology; for giants and the rare class of high surface brightness dwarfs, membership rests on velocity data. While 1277 of the catalog entries are considered members of the Virgo cluster, 574 are possible members and 245 appear to be background Zwicky galaxies.
778. The VLBA Galactic Plane Survey (VGaPS)
ID:
ivo://CDS.VizieR/J/AJ/142/35
Title:
The VLBA Galactic Plane Survey (VGaPS)
Short Name:
J/AJ/142/35
Date:
21 Oct 2021
Publisher:
CDS
Description:
We presents accurate absolute positions from a 24 GHz Very Long Baseline Array (VLBA) search for compact extragalactic sources in an area where the density of known calibrators with precise coordinates is low. The goals were to identify additional sources suitable for use as phase calibrators for galactic sources, determine their precise positions, and produce radio images. In order to achieve these goals, we developed a new software package, PIMA, for determining group delays from wide-band data with much lower detection limit. With the use of PIMA we have detected 327 sources out of 487 targets observed in three 24 hour VLBA experiments. Among the 327 detected objects, 176 are within 10 degrees of the Galactic plane. This VGaPS catalogue of source positions, plots of correlated flux density versus projected baseline length, contour plots, as well as weighted CLEAN images and calibrated visibility data in FITS format, are available on the Web at http://astrogeo.org/vgaps. Approximately one half of objects from the 24GHz catalogue were observed at dual band 8.6GHz and 2.3GHz experiments. Position differences at 24GHz versus 8.6/2.3GHz for all but two objects on average are strictly within reported uncertainties. We found that for two objects with complex structure positions at different frequencies correspond to different components of a source.
779. The WMAP First Year Source Catalog (WMAP1)
ID:
ivo://CDS.VizieR/J/ApJS/148/97
Title:
The WMAP First Year Source Catalog (WMAP1)
Short Name:
J/ApJS/148/97
Date:
21 Oct 2021
Publisher:
CDS
Description:
The WMAP mission has mapped the full sky to determine the geometry, content, and evolution of the universe. Full-sky maps are made in five microwave frequency bands to separate the temperature anisotropy of the cosmic microwave background (CMB) from foreground emission, including diffuse Galactic emission and Galactic and extragalactic point sources. We define masks that excise regions of high foreground emission, so CMB analyses can be carried out with minimal foreground contamination. We also present maps and spectra of the individual emission components, leading to an improved understanding of Galactic astrophysical processes.
780. Third preliminary catalogue of stars
ID:
ivo://CDS.VizieR/J/other/PBeiO/17.105
Title:
Third preliminary catalogue of stars
Short Name:
J/other/PBeiO/17
Date:
21 Oct 2021
Publisher:
CDS
Description:
On the basis of the data observed with the Photoelectric Transit Instrument, of the Beijing Astronomical Observatory during the period from 1980 through 1984, the third preliminary catalogue of stars on right ascension observed with the Photoelectric Transit Instrument (PPCP3) have been compiled. The relations between the residuals V and the magnitude M, and the spectral type S of FK4 stars are discussed. There are 411 stars in this catalogue. The mean precisions of {DELTA}alpha's is +/-2.3ms. Finally systematic corrections of PPCP3-FK4 are given.

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