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New OB-Association in Pup - CMA
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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.
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| A survey of ultraviolet objects
An all-sky survey of ultraviolet objects is presented together with astatistical analysis that leads to the conclusion that there is asignificantly higher population of hot subdwarfs lying below themain-sequence than hitherto thought. The distribution of all ultravioletobjects, main sequence ultraviolet objects, and MK unclassifiedultraviolet objects are shown in galactic coordinates, and the absolutemagnitudes and color-color diagrams for these groups are presented.Scale heights are derived, giving values similar to planetary nebulaefor the hottest groups.
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| Spectral types for early-type stars observed by SKYLAB
MK spectral types are presented for 246 early-type stars observed withthe S-019 ultraviolet stellar astronomy experiment on Skylab. K-linetypes are also given where applicable, and various peculiar stars areidentified. The peculiar stars include five silicon stars, a shell star,a helium-rich star, a silicon-strontium star, a chromium-europium star,and two marginal metallic-line stars.
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Membre dels grups següents:
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Dades d'Observació i Astrometria
| Constel·lació: | Canis Major |
| Ascensió Recta: | 07h16m36.32s |
| Declinació: | -23°49'36.7" |
| Magnitud Aparent: | 7.547 |
| Distancia: | 2040.816 parsecs |
| Moviment propi RA: | -4 |
| Moviment propi Dec: | 3 |
| B-T magnitude: | 7.326 |
| V-T magnitude: | 7.529 |
Catàlegs i designacions:
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