ST-FOC observations of globular clusters - Simulations

Details ST-FOC observations of globular clusters - Simulations ST-FOC observations of globular clusters - Simulations

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987japa....8...57b&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 8, March 1987, p. 57-68.

Astronomy and Astrophysics

Astrophysics

3

Astronomical Photometry, Data Simulation, Globular Clusters, Hubble Space Telescope, Astronomical Maps, Color-Magnitude Diagram, Point Spread Functions

Scientific paper

A first approximation to the Hubble space telescope (ST) point-spread function is used in a simulation procedure to investigate the problems concerning the observation and reduction of globular clusters in the Andromeda nebula. Considering M15 as a typical globular cluster, the magnitudes and coordinates of all the stars in the sample were scaled to the distance of M31, and data were reduced using the Rome code (Buonanno et al., 1979) as if observed via the ST-Faint Object Camera. Results suggest that ST-observations of individual stars in globular clusters in M31 are feasible with the required photometric accuracy (sigma = 0.1 mag) down to the blue extreme of the Horizontal Branch.

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