CCD observations of the RR Lyrae stars in NGC 1786 and the distance to the Large Magellanic Cloud

Details CCD observations of the RR Lyrae stars in NGC 1786 and the distance to the Large Magellanic Cloud CCD observations of the RR Lyrae stars in NGC 1786 and the distance to the Large Magellanic Cloud

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96.1362w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, Oct. 1988, p. 1362-1372.

Astronomy and Astrophysics

Astronomy

35

Astronomical Photometry, Cepheid Variables, Charge Coupled Devices, Light Curve, Magellanic Clouds, Star Clusters, Astronomical Photography, Lyra Constellation, Star Distribution

Scientific paper

CCD photometry of the RR Lyrae variables in the LMC cluster NGC 1786 gives a true distance modulus for the LMC of 18.44±0.05 mag if >MV(RR)< = 0.6, a result almost identical to that found from the NGC 2210 variables (18.42±0.06 mag), and consistent with the revised Cepheid distance modulus for the LMC (18.47±0.15 mag). The RR Lyrae period-amplitude relation suggest that NGC 1786, with [Fe/H] ≈ -2.3, is more metal poor than NGC 2210 by 0.4 dex.

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