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HD 131460


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Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

Physical parameters of stars in the Scorpio-Centaurus OB association
Walraven photometry is presented of established and probable members ofthe Scorpio-Centaurus OB association. For each star, effectivetemperature and surface gravity are derived using Kurucz (1979)atmosphere models. From the Straizys and Kuriliene (1981) tables,absolute magnitudes are calculated. Distance moduli and visualextinctions are determined for all stars. From a comparison of theHR-diagrams of the stars in each subgroup with theoretical isochrones,the ages of the three subgroups are derived. The distances to the threesubgroups are shown to be different; there is a general trend (alsowithin each subgroup) for the distances to be larger at higher galacticlongitudes. The visual extinction in the youngest subgroupUpper-Scorpius, is well correlated with the IRAS 100-micron map. Thedistance toward the Ophiuchus dark clouds is found to be 125 pc, basedon the photometric distances to the stars. Most of the early-type starsin Upper-Scorpius are located at the far side of the dark clouds.

A search for AP stars in the Scorpio-Centaurus association - Additional evidence for a slow metal enrichment
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1982A&A...111..117B&db_key=AST

Possible new members of a subgroup of the Scorpio-Centaurus association.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972AJ.....77..474G&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Erbogan
Sað Açýklýk:14h54m50.17s
Yükselim:-36°09'11.8"
Görünürdeki Parlaklýk:8.96
Uzaklýk:211.864 parsek
özdevim Sað Açýklýk:-14.4
özdevim Yükselim:-11.5
B-T magnitude:9.349
V-T magnitude:8.993

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 131460
TYCHO-2 2000TYC 7310-2497-1
USNO-A2.0USNO-A2 0525-18315038
HIPHIP 72977

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