Photographic RGU photometry of five southern open clusters in VELA II

Details Photographic RGU photometry of five southern open clusters in VELA II Photographic RGU photometry of five southern open clusters in VELA II

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26as...49..475t&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 49, Aug. 1982, p. 475-482. Research supported by the Swiss National Science

Astronomy and Astrophysics

Astrophysics

1

Astronomical Photography, Open Clusters, Southern Sky, Stellar Spectrophotometry, Visual Photometry, Astronomical Catalogs, Interstellar Extinction, Milky Way Galaxy, Stellar Evolution

Scientific paper

Five open clusters (Ru 77, Ru 78, Ru 83, Pi 16 and Ba 20) in the Vela II field have been investigated photometrically in the RGU-system. Only Pi 16 has already been investigated (Moffat and Vogt, 1973) and Ba 20 has not even been identified as a physical group before. The photometric parameters (distance, reddening and earliest spectral type) are put together in table I. Ru 77, Pi 16 and Ba 20 have earliest spectral types not later than b 3 they can, therefore, be considered as spiral arm indicators for the next inner spiral arm-I. Figure 11 shows the position of the five clusters projected onto the galactic plane.

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