CCD photometry in VRI bands of the galactic cluster NGC 2818

Details CCD photometry in VRI bands of the galactic cluster NGC 2818 CCD photometry in VRI bands of the galactic cluster NGC 2818

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990japa...11..151s&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 11, June 1990, p. 151-166.

Astronomy and Astrophysics

Astrophysics

4

Astronomical Photometry, Charge Coupled Devices, Infrared Photometry, Open Clusters, Planetary Nebulae, Visual Photometry, Color-Magnitude Diagram, Interstellar Extinction, Stellar Magnitude, Stellar Mass, Telescopes

Scientific paper

The open cluster NGC 2818 containing a planetary nebula has been observed in VRI bands using the CCD system at prime focus of the 2.3 meter Vainu Bappu Telescope. The study extending to stars V of 21 magnitude established the distance modulus as (m - M)0 = 12.9 + or - 0.1 for the cluster. Based on the fitting of theoretical isochrones computed for solar metallicity, an age of 5(+ or - 1) x 10 to the 8th years has been assigned to the cluster. Association of the planetary nebula with the cluster indicates that the progenitor mass of the planetary nebula on the main sequence is at least 2.5 M solar masses.

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