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CHARM2: An updated Catalog of High Angular Resolution Measurements
We present an update of the Catalog of High Angular ResolutionMeasurements (CHARM, Richichi & Percheron \cite{CHARM}, A&A,386, 492), which includes results available until July 2004. CHARM2 is acompilation of direct measurements by high angular resolution methods,as well as indirect estimates of stellar diameters. Its main goal is toprovide a reference list of sources which can be used for calibrationand verification observations with long-baseline optical and near-IRinterferometers. Single and binary stars are included, as are complexobjects from circumstellar shells to extragalactic sources. The presentupdate provides an increase of almost a factor of two over the previousedition. Additionally, it includes several corrections and improvements,as well as a cross-check with the valuable public release observationsof the ESO Very Large Telescope Interferometer (VLTI). A total of 8231entries for 3238 unique sources are now present in CHARM2. Thisrepresents an increase of a factor of 3.4 and 2.0, respectively, overthe contents of the previous version of CHARM.The catalog is only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/431/773
| Infrared and visual lunar occultations measurements of stellar diameters and new binary stars detections at the Calar Alto 1.5 m telescope
We present a program of routine lunar occultations, at optical andnear-IR wavelengths, recently started at the 1.5 m Spanish telescope atthe Calar Alto Observatory. Both a CCD and an infrared array detectorare used. The program is aimed mainly at the detection and investigationof binary systems, although results in other areas of stellar researchare also anticipated. Occultations are reported for a total of 40 stars.Among these, SAO 164567, SAO 78258and AG+24 788 have been discovered to be binaries,with projected separations as small as 0.006 arcsec. Furthermore,binarity is suspected in the case of SAO 78119 andSAO 79251. Additionally, the angular diameter of thelate-type giant 30 Psc and of the infrared starV349 Gem have been accurately measured, the latterfor the first time. We finally evaluate the instrumentation performancein terms of the limiting magnitude and angular resolution, and discussapplications to larger telescopes.Appendix A is only available in electronic form athttp://www.edpsciences.org
| Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
| Mesures de vitesses radiales. VII. Accompagnement AU sol DU programme d'observation DU satellite Hipparcos. Radial velocities. VII. Ground based measurements for Hipparcos.
We publish 734 radial velocities of stars distributed in 28 fields of4x4deg. We continue the PPO series (Fehrenbach et al. 1987; Duflot etal. 1990 and 1992), using the Fehrenbach objective prism method.
| Flamsteed stars not contained in the Yale "Catalogue of Bright Stars"
Not Available
| UBV photometry of stars whose positions are accurately known. IV
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1987A&AS...68..211O&db_key=AST
| Catalog of Indidual Radial Velocities, 0h-12h, Measured by Astronomers of the Mount Wilson Observatory
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970ApJS...19..387A&db_key=AST
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Observation and Astrometry data
| Constellation: | Δίδυμοι |
| Right ascension: | 06h18m54.43s |
| Declination: | +23°36'11.8" |
| Apparent magnitude: | 6.571 |
| Distance: | 242.131 parsecs |
| Proper motion RA: | 0 |
| Proper motion Dec: | -6.2 |
| B-T magnitude: | 7.701 |
| V-T magnitude: | 6.665 |
Catalogs and designations:
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