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HD 93207


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Searching for unknown open clusters in the Tycho-2 catalog
We present 11 new open cluster candidates found in a systematic searchfor unknown star clusters using the astrometric and photometric dataincluded in the Tycho 2 catalog. The possible existence of these stellaraggregates is supported by the analysis of proper motions,color-magnitude diagrams, stellar density distributions, and by thevisual inspection of the Digitized Sky Survey (DSS) plates. With thesetools we were able to determine mean absolute proper motions as well aspreliminary reddenings, distances and ages for the majority of thecandidates. We found that most of them are possibly nearby (closer than~ 600 pc) open clusters never studied before.Based on observations of the ESA Hipparcos satellite.Figures 1 and 2 are only available in electronic form athttp://www.edpsciences.org

The Carina Spiral Feature: Strömgren-Hβ photometry approach. I. The photometric data-base
A data-base collating all uvbybeta photometry available at present forO-B9 stars brighter than 10th visual magnitude in the field of theCarina Spiral Feature is presented. The completeness and homogeneity ofthe data-base are discussed.Based on CDS data.Table 1 is only available in electronic form at the CDS via anonymousftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/410/523

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Osservazione e dati astrometrici

Costellazione:Carena
Ascensione retta:10h44m26.89s
Declinazione:-61°21'48.9"
Magnitudine apparente:8.544
Distanza:321.543 parsec
Moto proprio RA:-14.6
Moto proprio Dec:2.8
B-T magnitude:8.55
V-T magnitude:8.545

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 93207
TYCHO-2 2000TYC 8957-1527-1
USNO-A2.0USNO-A2 0225-09290905
HIPHIP 52534

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