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Публикации по объекту
Search for associations containing young stars (SACY). I. Sample and searching method
We report results from a high-resolution optical spectroscopic surveyaimed to search for nearby young associations and young stars amongoptical counterparts of ROSAT All-Sky Survey X-ray sources in theSouthern Hemisphere. We selected 1953 late-type (B-V~≥~0.6),potentially young, optical counterparts out of a total of 9574 1RXSsources for follow-up observations. At least one high-resolutionspectrum was obtained for each of 1511 targets. This paper is the firstin a series presenting the results of the SACY survey. Here we describeour sample and our observations. We describe a convergence method in the(UVW) velocity space to find associations. As an example, we discuss thevalidity of this method in the framework of the β Pic Association.
| The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.
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Группы:
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Наблюдательные данные и астрометрия
| Созвездие: | Телескоп |
| Прямое восхождение: | 19h41m34.12s |
| Склонение: | -46°46'12.7" |
| Видимая звёздная величина: | 9.873 |
| Собственное движение RA: | 45.2 |
| Собственное движение Dec: | -99.8 |
| B-T magnitude: | 10.99 |
| V-T magnitude: | 9.966 |
Каталоги и обозначения:
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