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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.
| Photometry of hydrogen deficient stars.
Not Available
| Four-colour photometry of hydrogen-deficient stars and related objects
Stromgren uvby photometry of hydrogen deficient and helium-weak starssuggests that the 'extreme helium' (= 'hydrogen deficient') stars whichhave been well observed are all variable, probably in a complex way.Previously observed short-term variability of HD 160641 and long-termvariability of HD 168476 are confirmed. There is no evidence forvariability in the intermediate helium stars or the helium-weak stars.
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Observation and Astrometry data
| Constellation: | Telescopium |
| Right ascension: | 18h20m47.83s |
| Declination: | -56°55'59.1" |
| Apparent magnitude: | 7.786 |
| Distance: | 10000000 parsecs |
| Proper motion RA: | 2 |
| Proper motion Dec: | -4.8 |
| B-T magnitude: | 7.695 |
| V-T magnitude: | 7.779 |
Catalogs and designations:
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INHABITED SKY
