Time-resolved CCD photometry of an ensemble of stars

Details Time-resolved CCD photometry of an ensemble of stars Time-resolved CCD photometry of an ensemble of stars

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..754g&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, June 1988, p. 754-765.

Statistics

95

Open Clusters, Stellar Oscillations, Stellar Spectrophotometry, White Dwarf Stars, Calibrating, Charge Coupled Devices, Error Analysis

Scientific paper

A technique for obtaining CCD photometry of a large ensemble of stars, with precision limited by atmospheric scintillation and photon statistics is presented. Under bright-sky conditions with a 0.9-m telescope, a precision of about 0.0015 mag relative to an ensemble average standard was obtained for 12th-13th mag stars in M 67 with exposure times of 1 min. The increase in noise level due to variable cirrus clouds is minimal. Effective noise levels for the detection of coherent oscillations with periods of 5-20 min could thus be reduced to about 30 micromag over ten nights of observing for stars of this brightness. A much larger ensemble of faint stars could be followed at lower precision with sky background and photon statistics as dominant error sources. Four probable-cluster DA white dwarfs were detected in the old galactic cluster M 67, using B, V calibration photometry.

Affiliated with

Also associated with

No associations

Rating

Time-resolved CCD photometry of an ensemble of stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time-resolved CCD photometry of an ensemble of stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-resolved CCD photometry of an ensemble of stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1183054