CCD BVI Photometry of the Southern Open Clusters Pismis 23 and BH 222

Details CCD BVI Photometry of the Southern Open Clusters Pismis 23 and BH 222 CCD BVI Photometry of the Southern Open Clusters Pismis 23 and BH 222

Apr 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.290..353c&link_type=abstract

Astrophysics and Space Science, v. 290, Issue 3, p. 353-362 (2004).

Astronomy and Astrophysics

Astrophysics

Open Clusters-Pismis 23, Bh 222-Photometry

Scientific paper

CCD BVI Johnson Cousins photometry of the open cluster candidates Pismis 23 and BH 222 is presented. Both the analysis of the colour-magnitude diagrams and star counts performed in the regions of these two objects support their physical reality. For Pismis 23 we derive E(B-V) = 2.0 ± 0.1, E(V-I) = 2.6 ± 0.1, a distance from the Sun d= (2.6 ± 0.6) kpc and an age of (300 ± 100) Myr, while for BH 222 we obtain E(V-I) = 2. 4 ± 0.2, d= (6.0 ± 2.7) kpc and (60 ± 30) Myr. Both objects, located beyond the Sagittarius arm, are among the most reddened and distant open clusters known in the direction towards the Galactic centre.

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