PISMIS 3: an unstudied old open cluster

Details PISMIS 3: an unstudied old open cluster PISMIS 3: an unstudied old open cluster

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...291..106c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 291, no. 1, p. 106-109

Astronomy and Astrophysics

Astrophysics

7

Distance, Metallicity, Open Clusters, Spectroscopic Analysis, Charge Coupled Devices, Color-Magnitude Diagram, Hertzsprung-Russell Diagram

Scientific paper

We have obtained CCD Bv photometry for the open cluster Pismis 3 and a nearby field. This previously unstudied object appears to be rich, loose and strongly absorbed. Our analysis suggests that Pismis 3 is of intermediate age and probably metal poor. Adopting the theoretical metal content Z = 0.008, which provides the best global fit, we obtain an age of about 2 Gyr. Simultaneously a color excess EB-V = 1.35 and an apparent distance modulus (m - M) = 14.70 are derived. These results put Pismis 3 about 1.5 Kpc distance from the Sun. The relation of the cluster with the surrounding field is also investigated.

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