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Catalog of BV magnitudes and spectral classes of 6000 stars
The present catalog, compiled at the Abastumani Observatory, contains BVmagnitudes and spectral classes of about 6000 stars up to V(lim) = 13.0min five circular areas of 18 sq deg located near the salactic-equatorplane. The catalog is intended for star-statistics studies ofstar-formation regions.
| The value of R in Monoceros
Recent photometric and spectroscopic observations are used inconjunction with other data for early-type stars in northern Monocerosin order to investigate the local value of R (the ratio of total toselective extinction). From a variable-extinction analysis, it isconcluded that a ratio of approximately 3.2 is appropriate for thegeneral interstellar extinction in this region and that there is noevidence here for the existence of local anomalies. The two majorassociations Mon OB 1 and Mon OB 2 are clearly delineated and are foundto exhibit properties typical of such young stellar groups. Derivedproperties for a few interesting stars are presented.
| Polarization in NGC2244
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Группы:
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Наблюдательные данные и астрометрия
| Созвездие: | Единорог |
| Прямое восхождение: | 06h33m34.66s |
| Склонение: | +05°17'42.9" |
| Видимая звёздная величина: | 9.876 |
| Собственное движение RA: | -3.3 |
| Собственное движение Dec: | -4.7 |
| B-T magnitude: | 10.014 |
| V-T magnitude: | 9.888 |
Каталоги и обозначения:
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INHABITED SKY
