A Survey of Open Clusters in the u'g'r'i'z' Filter System: I. Results for NGC2548 (M48)

Abstract

We present initial results of a photometric survey of open star clusters, primarily in the southern hemisphere, taken in the u'g'r'i'z' filter system. While our entire observed sample covers more than 100 clusters, here we present data for NGC2548 (M48) which is a cluster characterized in the UBV and DDO photometric systems. We compare our results to the published values from other observers and to the Padova theoretical isochrones and metallicity curves. These observations demonstrate that the u'g'r'i'z' filters can play an important role in determining the metallicity of stars and clusters. We begin this series of papers with a study of NGC2548 because we have obtained data of this cluster not only with our main program telescope, the CTIO Curtis-Schmidt, but also with the US Naval Observatory (USNO) 1.0m telescope (the telescope used to define the u'g'r'i'z' system), and the Sloan Digital Sky Survey (SDSS) 0.5m Photometric Telescope (the photometric monitoring telescope used to calibrate the SDSS 2.5m telescope imaging data). We have used the data from this study to validate our ability to transform measurements obtained on other telescopes to the standard USNO 1.0m u'g'r'i'z' system. This validation is particularly important for very red stars, for which the original u'g'r'i'z' standard star network is poorly constrained.

arXiv comment32 pages, 8 figures. Complete, machine-readable versions of Tables 4-6 available at http://home.fnal.gov/~dtucker/OpenClusters/NGC2548/ . Accepted for publication in the Astronomical Journal

References in corpus (10)

• The Sloan Digital Sky Survey: Technical Summary
• Evolutionary tracks and isochrones for low- and intermediate-mass stars: from 0.15 to 7 M_sun, and from Z=0.0004 to 0.03
• The Sloan Digital Sky Survey Photometric Camera
• The u'g'r'i'z' Standard Star Network
• Theoretical isochrones in several photometric systems I. Johnson-Cousins-Glass, HST/WFPC2, HST/NICMOS, Washington, and ESO Imaging Survey filter sets
• The First Data Release of the Sloan Digital Sky Survey
• New catalogue of optically visible open clusters and candidates
• Gravitational tidal effects on galactic open clusters
• Determination of proper motions and membership of the open star cluster NGC2548
• Local u'g'r'i'z' Standard Stars in the Chandra Deep Field-South

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• Bootes II ReBooted: An MMT/MegaCam Study of An Ultra-Faint Milky Way Satellite
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• Absolute Magnitude Calibration for Red Giants based on the Colour-Magnitude Diagrams of Galactic Clusters. I- Calibration with V and (B-V)
• Colour Transformations between BVRc and g'r'i' Photometric Systems for Giant Stars
• Absolute Magnitude Calibration for Giants based on the Colour-Magnitude Diagrams of Galactic Clusters. II-Calibration with SDSS
• Metallicity Dependent Transformations for Red Giants with Synthetic Colours of UBV and ugr