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Two-colour photometry for 9473 components of close Hipparcos double and multiple stars
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| ICCD speckle observations of binary stars. VIII - Measurements during 1989-1991 from the Cerro Tololo 4 M telescope
One-thousand eighty-eight observations of 947 binary star systems,observed by means of speckle interferometry with the 4 m telescope onCerro Tololo, are presented. These measurements, made during the period1989-1991, comprise the second installment of results stemming from theexpansion of our speckle program to the southern hemisphere.
| Four-colour UVBY and H-beta photometry of all A3 to F5 stars brighter than m(pg) = about 11.0 mag in 6 Selected Areas close to the Galactic plane
Photometric observations of 540 A3-F5 stars in Selected Areas 171, 173,175, 177, 192, and 195 of the Potsdam survey (Becker and Brueck,1929-1938) are reported. Data obtained in the Stromgren uvby-beta systemusing a 6-channel spectrograph-photometer on the 50-cm Danish telescopeat ESO on 98 nights during 1986-1987 are presented in extensive tablesand graphs and briefly characterized. Comparisons with previousobservations of some program stars reveal no systematic differences inmagnitude or spectral indices.
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Membre dels grups següents:
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Dades d'Observació i Astrometria
| Constel·lació: | Canis Major |
| Ascensió Recta: | 07h10m24.17s |
| Declinació: | -30°03'19.4" |
| Magnitud Aparent: | 8.419 |
| Distancia: | 196.464 parsecs |
| Moviment propi RA: | 5.2 |
| Moviment propi Dec: | 11.7 |
| B-T magnitude: | 8.716 |
| V-T magnitude: | 8.444 |
Catàlegs i designacions:
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