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HD 92507


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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.

Uvby-beta photometry of stars in the Michigan Spectral Catalogue. I - The Delta Del stars
uvby-beta photometry of 74 stars classified as Delta Del in Volume 1 ofthe Michigan Spectral Catalogue is presented. The photometry is inagreement with the spectral classification in that it indicates DeltaDel stars are metal-line-enhanced stars with equivalent-temperaturetypes of A9 + or - 2 subtypes. There is a discrepancy between theluminosity implied from the delta c1 index and the spectralclassification. It is argued that c1 is an inadequateluminosity indicator for some late A- to early F-type stars. Several ofthe Delta Del stars are known Delta Scuti pulsators, and some commentson the metallicism-pulsation relation are made.

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Сазвежђа:Прамац
Ректацензија:10h38m40.03s
Deклинација:-69°32'07.7"
Apparent магнитуда:9.451
Proper motion RA:-19
Proper motion Dec:10.8
B-T magnitude:9.82
V-T magnitude:9.482

Каталог и designations:
Proper имена   (Edit)
HD 1989HD 92507
TYCHO-2 2000TYC 9215-595-1
USNO-A2.0USNO-A2 0150-07407218
HIPHIP 52094

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