- ID:
- ivo://CDS.VizieR/II/120
- Title:
- Phot and Spectrophot Investigation, South Gal Pole
- Short Name:
- II/120
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Photoelectric magnitudes and colors in the Johnson-Morgan UBV system for 477 stars in 6 square degrees near Kapteyn Selected Area 141 (l=245, b=-86; 00 43 < RA < 01 11, -33.7 < Dec < -26.9, B1950.0) are given in the first data file. The estimated rms accuracies are 0.02 (V), 0.03 (B-V), 0.07 (U-B) for stars in the magnitude range 15 to 16. Table 2 of the source reference gives the mean errors for intervals of magnitude. Photographic V magnitudes and B-V colors are given for 2835 stars to magnitude 17 (in the same region as above) in the second data file. The estimated rms accuracies are 0.05 (V) and 0.08 (B-V). The mean errors of the computed right ascensions and declinations are 0.15s and 2", respectively.
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- ID:
- ivo://CDS.VizieR/J/AJ/149/50
- Title:
- Photometry of 105 variable stars from CSTAR
- Short Name:
- J/AJ/149/50
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Chinese Small Telescope ARray carried out high-cadence time-series observations of 27 square degrees centered on the South Celestial Pole during the Antarctic winter seasons of 2008-2010. Aperture photometry of the 2008 and 2010 i-band images resulted in the discovery of over 200 variable stars. Yearly servicing left the array defocused for the 2009 winter season, during which the system also suffered from intermittent frosting and power failures. Despite these technical issues, nearly 800000 useful images were obtained using g, r, and clear filters. We developed a combination of difference imaging and aperture photometry to compensate for the highly crowded, blended, and defocused frames. We present details of this approach, which may be useful for the analysis of time-series data from other small-aperture telescopes regardless of their image quality. Using this approach, we were able to recover 68 previously known variables and detected variability in 37 additional objects. We also have determined the observing statistics for Dome A during the 2009 winter season; we find the extinction due to clouds to be less than 0.1 and 0.4mag for 40% and 63% of the dark time, respectively.
- ID:
- ivo://CDS.VizieR/III/172
- Title:
- Radial Velocities from Objective Prism Plates
- Short Name:
- III/172
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Accurate positions and radial velocities are determined from 32 objective-prism plates for two areas. Each field is observed twice with opposite dispersion, allowing adjustment of coordinates for spectra not at the plate centers. From the adjusted coordinates and plate overlap, positions are determined with average mean errors: 0.0135 s in RA and 0.177 arcsec in Dec for Area I (near the South Galactic Pole); 0.0315 s in RA, 0.144 arcsec in Dec for Area II (near the galactic plane). Observations were taken by J.D. MacConnell and G. Araya with a six degree prism on the Curtis Schmidt telescope at Cerro Tololo.
- ID:
- ivo://CDS.VizieR/J/ApJS/140/239
- Title:
- RASS: clusters of galaxies around SGP
- Short Name:
- J/ApJS/140/239
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A field of 1.013sr in the ROSAT All-Sky Survey (RASS), centered on the south Galactic pole (SGP), has been searched in a systematic, objective manner for clusters of galaxies. The procedure relied on a correlation of the X-ray positions and properties of ROSAT sources in the field with the distribution of galaxies in the COSMOS digitized database, which was obtained from scanning the plates of the UK Schmidt IIIa-J optical survey of the southern sky. The study used the second ROSAT survey database (RASS-2) and included several optical observing campaigns to measure cluster redshifts. The search, which is a precursor to the larger REFLEX survey encompassing the whole southern sky, reached the detection limits of both the RASS and the COSMOS data and yielded a catalog of 186 clusters in which the lowest flux is 1.5x10-12ergs/cm^2^/s in the 0.1-2.4keV band. Of these 157 have measured redshifts. Using a flux limit of 3.0x10-12ergs/cm^2^/s a complete subset of 112 clusters was obtained, of which 110 have measured redshifts. The spatial distribution of the X-ray clusters out to a redshift of 0.15 shows an extension of the Local Supercluster to the Pisces-Cetus supercluster (z<0.07), and an orthogonal structure at higher redshift (0.07<z<0.15). This result is consistent with large-scale structure suggested by optical surveys.
- ID:
- ivo://CDS.VizieR/II/119
- Title:
- Stellar Distribution near the South Galactic Pole
- Short Name:
- II/119
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This catalog contains a field of 2.8 square degrees centered on Kapteyn Selected Area 141 (l=245, b=-86). The center of field was near SAO 166815 (Bok I 174 B) at 01 05 11 -29 33 12 (1950). The covered ranges were 01 01 30 < RA < 01 09 30 and -30 20 < Dec < -28 35 (1950). Photographic V magnitudes and B-V colors of 640 stars were measured in Region I. Data were card punched at the Australian National University on an Univac 1100/82. The coordinates were determined by Kavan U. Ratnatunga from PDS scans of the region on UKSTU Schmidt plate J6657S (taken on 03-Jan-1981) and visual cross identifications were given with the published finding chart. The coordinate calibration used the positions of SAO stars. Estimated rms accuracies for the following measurements are: Visual Magnitude: 0.03 mag B-V colors : 0.05 mag Positions : 1 arc second
- ID:
- ivo://CDS.VizieR/III/151
- Title:
- UBV K Stars South Galactic Pole
- Short Name:
- III/151
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- B and V photographic photometry is collected for approximately 2000 stars near the south galactic pole with 0.8<B-V<1.20; v<19.0, and B<20.06. Velocities with respect to the local standard of rest are provided for approximately 500 K dwarfs and K giants. table8.dat contains photometry in 11.5 square degrees towards the South Galactic Pole, derived from UK Schmidt data, and table9.dat contains photometric data over 0.72 square degrees, derived from 4 B and 3 V plates from Las Campanas Observatory. table10.dat, table11.dat and table12.dat contain velocities for dwarf stars.
- ID:
- ivo://CDS.VizieR/J/AJ/112/772
- Title:
- VI photometry in South Galactic Pole
- Short Name:
- J/AJ/112/772
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Catalogs of V and I photometry for two 20 square degree regions near the South Galactic Pole, containing 30,000 and 19,000 stars, have been constructed using a CCD in time delay integration mode. Internal and external comparisons indicate a characteristic photometric accuracy ranging from 0.02mag at V~12 to 0.05 at V~18-18.5.
