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11. AAVSO International Variable Star Index VSX
ID:
ivo://CDS.VizieR/B/vsx
Title:
AAVSO International Variable Star Index VSX
Short Name:
B/vsx
Date:
07 Mar 2022 08:38:01
Publisher:
CDS
Description:
This file contains Galactic stars known or suspected to be variable. It lists all stars that have an entry in the AAVSO International Variable Star Index (VSX; http://www.aavso.org/vsx). The database consisted initially of the General Catalogue of Variable Stars (GCVS) and the New Catalogue of Suspected Variables (NSV) and was then supplemented with a large number of variable star catalogues, as well as individual variable star discoveries or variables found in the literature. Effort has also been invested to update the entries with the latest information regarding position, type and period and to remove duplicates. The VSX database is being continually updated and maintained. For historical reasons some objects outside of the Galaxy have been included.
12. AAVSO Photometric All Sky Survey (APASS) DR9
ID:
ivo://CDS.VizieR/II/336
Title:
AAVSO Photometric All Sky Survey (APASS) DR9
Short Name:
II/336
Date:
21 Oct 2021
Publisher:
CDS
Description:
The AAVSO Photometric All Sky Survey (APASS) project is designed to bridge the gap between the shallow Tycho2 two-bandpass photometric catalog that is complete to V=11 and the deeper, but less spatially-complete catalogs like SDSS or PanSTARRS. It can be used for calibration of a specific field; for obtaining spectral information about single sources, determining reddening in a small area of the sky; or even obtaining current-epoch astrometry for rapidly moving objects. The survey is being performed at two locations: near Weed, New Mexico in the Northern Hemisphere; and at CTIO in the Southern Hemisphere. Each site consists of dual bore-sighted 20cm telescopes on a single mount, designed to obtain two bandpasses of information simultaneously. Each telescope covers 9 square degrees of sky with 2.5arcsec pixels, with the main survey taken with B,V,g',r',i' filters and covering the magnitude range 10<V<17. A bright extension is underway, saturating at V=7 and extending the wavelength coverage from u' to Y. The current catalog is Data Release 9 and contains approximately 62 million stars. The American Association of Variable Star Observers is responsible for the overall management of the survey; a team of professional astronomers participate in the data analysis. The project was initially funded by the Robert Martin Ayers Sciences Fund, with a follow-on grant from the National Science Foundation.
13. AAVSO Photometric All Sky Survey (APASS) DR10
ID:
ivo://org.gavo.dc/apass/q/cone
Title:
AAVSO Photometric All Sky Survey (APASS) DR10
Short Name:
APASS DR10 cone
Date:
27 Dec 2024 08:31:05
Publisher:
The GAVO DC team
Description:
AAVSO Photometric All-Sky Survey (APASS), underway since 2010, covers the entire sky from 7.5 < V < 16.5 magnitude, and in the BVugrizY bandpasses. A northern and a southern site are used, each with twin ASA 20cm astrographs and Apogee Aspen CG16m cameras, covering 2.9x2.9 square degrees with 2.6arcsec pixels. Landolt and SDSS standards are used for all-sky solutions, with typical 0.02mag calibration errors on the bright end. Data Release 10 is a complete reprocessing of all 500K images taken with the system, including hundreds of nights not part of DR9. Sextractor is used for star finding and centroiding; DAOPHOT is used for aperture photometry; the astrometry.net plate-solving library is used for basic astrometry, supplanted with more precise WCS that utilizes knowledge of the optical train distortions. With these changes, DR10 includes many more stars than prior releases. More information is available at http://www.aavso.org/apass.
14. AAVSO Photometric All Sky Survey ConeSearch
ID:
ivo://archive.stsci.edu/catalogs/APASS
Title:
AAVSO Photometric All Sky Survey ConeSearch
Short Name:
APASS CS
Date:
23 Jul 2020 19:59:03
Publisher:
Space Telescope Science Institute Archive
Description:
All MAST catalog holdings are available via Cone Search endpoints. This service provides access to the MAST mirror of the AAVSO Photometric All Sky Survey All available missions are listed at http://archive.stsci.edu/vo/mast_services.html.
15. A Bayesian search for binaries in Hipparcos
ID:
ivo://CDS.VizieR/J/ApJS/192/2
Title:
A Bayesian search for binaries in Hipparcos
Short Name:
J/ApJS/192/2
Date:
21 Oct 2021
Publisher:
CDS
Description:
We develop Bayesian statistical methods for discovering and assigning probabilities to non-random (e.g., physical) stellar companions. These companions are either presently bound or were previously bound. The probabilities depend on similarities in corrected proper motion parallel and perpendicular to the brighter component's motion, parallax, and the local phase-space density of field stars. Control experiments are conducted to understand the behavior of false positives. The technique is applied to the Hipparcos Catalogue (Cat. I/239) within 100pc. This is the first all-sky survey to locate escaped companions still drifting along with each other. In the <100pc distance range, ~220 high probability companions with separations between 0.01 and 1pc are found. The first evidence for a population (~300) of companions separated by 1-8pc is found.
16. Abbadia Catalogue between +5{deg}15 and -3{deg}15'
ID:
ivo://CDS.VizieR/I/65
Title:
Abbadia Catalogue between +5{deg}15 and -3{deg}15'
Short Name:
I/65
Date:
21 Oct 2021
Publisher:
CDS
Description:
The catalogue contains the mean positions of 13532 stars observed at the Abbadia Observatory (near Hendaye, France), from observations made at the between 1906 and 1912 with the meridien circle of the observatory. The observations were made mainly for the reduction of the Alger zone of the Astrographic Catalogue. The original catalogue contains also approximative magnitudes which are not reported here.
17. Abbadia Catalogue of 14263 Stars, +16 to +24{deg}
ID:
ivo://CDS.VizieR/I/57
Title:
Abbadia Catalogue of 14263 Stars, +16 to +24{deg}
Short Name:
I/57
Date:
21 Oct 2021
Publisher:
CDS
Description:
This catalog contains meridian circle observations of 14192 reference stars in the Paris Observatory zone of the Astrographic Catalog, +16 to +24deg, made from 1899 to 1906. The original catalog contains also a supplement of 81 stars, which is not included here. The positions have been reduced to 1900.0 on the basis of Newcomb's constants. The probable errors for most stars range from 0.0093s to 0.0161s in right ascension and from 0.096" to 0.162" in declination, depending on the number of observations. In addition to the positions, the catalog contains a running number, the magnitude from the Berlin catalogs, the mean epoch and number of observations, and the BD number.
18. ABCG209 spectroscopic and photometric catalog
ID:
ivo://CDS.VizieR/J/MNRAS/387/1374
Title:
ABCG209 spectroscopic and photometric catalog
Short Name:
J/MNRAS/387/1374
Date:
21 Oct 2021
Publisher:
CDS
Description:
This paper is aimed at giving an overview of the global properties of the rich cluster of galaxies ABCG 209. This is achieved by complementing the already available data with new medium-resolution spectroscopy and near-infrared (NIR) photometry which allow us to (i) analyse in detail the cluster dynamics, distinguishing among galaxies belonging to different substructures and deriving their individual velocity distributions, using a total sample of 148 galaxies in the cluster region, of which 134 belonging to the cluster; (ii) derive the cluster NIR luminosity function; (iii) study the Kormendy relation and the photometric plane of cluster early-type galaxies (ETGs). Finally we provide an extensive photometric (optical and NIR) and spectroscopic data set for such a complex system to be used in further analyses investigating the nature, formation and evolution of rich clusters of galaxies.
19. ABCG 85 velocities catalogue
ID:
ivo://CDS.VizieR/J/A+AS/129/281
Title:
ABCG 85 velocities catalogue
Short Name:
J/A+AS/129/281
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a catalogue of velocities for 551 galaxies (and give the coordinates of 39 stars misclassified as galaxies in our photometric plate catalogue) in a region covering about 100'x100' (0.94x0.94Mpc for an average redshift of 0.0555, assuming H_0_=50km/s/Mpc) in the direction of the rich cluster ABCG85. This catalogue includes previously published redshifts by Beers et al. (1991AJ....102.1581B) and Malumuth et al. (1992AJ....104..495M), together with our 367 new measurements. A total of 305 galaxies have velocities in the interval 13350-20000km/s, and will be considered as members of the cluster. ABCG 85 therefore becomes one of the clusters with the highest number of measured redshifts; its optical properties are being investigated in a companion paper.
20. AB Dor A VLBI images
ID:
ivo://CDS.VizieR/J/A+A/641/A90
Title:
AB Dor A VLBI images
Short Name:
J/A+A/641/A90
Date:
21 Oct 2021
Publisher:
CDS
Description:
The fast rotator, pre-main sequence star AB Dor A is a strong and persistent radio emitter. The extraordinary coronal flaring activity is thought to be the origin of compact radio emission and other associated phenomena, such as large slingshot prominences. We aim to investigate the radio emission mechanism and the milliarcsecond radio structure around AB Dor A. We performed phase-referenced VLBI observations at 22.3GHz, 8.4GHz, and 1.4GHz over more than one decade using the Australian VLBI array. Our 8.4GHz images show a double core-halo morphology, similar at all epochs, with emission extending at heights between 5 and 18 stellar radii. Furthermore, the sequence of the 8.4GHz maps shows a clear variation of the source structure within the observing time. However, images at 1.4GHz and 22.3GHz are compatible with a compact source. The phase-reference position at 8.4GHz and 1.4GHz are coincident with those expected from the well-known milliarcsecond-precise astrometry of this star, meanwhile the 22.3GHz position is 4sigma off the prediction in the north-west direction. The origin of this offset is still unclear. We have considered several models to explain the morphology and evolution of the inner radio structure detected in AB Dor A. These models include emission from the stellar polar caps, a flaring, magnetically-driven loop structure, and the presence of helmet streamers. We also investigated a possible close companion to AB Dor A. Our results confirm the extraordinary coronal magnetic activity of this star, capable of producing compact radio structures at very large heights that have so far only been seen in binary interacting systems.

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