B, V photometry for ∼19,000 stars in and around the Magellanic Cloud globular clusters NGC 1466, NGC 1841, NGC 2210, NGC 2257, and reticulum

Journal Article · Sun Jun 01 04:00:00 EDT 2014 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/147/6/155· OSTI ID:22340216

Jeon, Young-Beom ^[1]; Nemec, James M. ^[2]; Walker, Alistair R.

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1. Korea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon 305-348 (Korea, Republic of)
2. Department of Physics and Astronomy, Camosun College, Victoria, BC V8P 5J2 (Canada)

Homogeneous B, V photometry is presented for 19,324 stars in and around 5 Magellanic Cloud globular clusters: NGC 1466, NGC 1841, NGC 2210, NGC 2257, and Reticulum. The photometry is derived from eight nights of CCD imaging with the Cerro Tololo Inter-American Observatory 0.9 m SMARTS telescope. Instrumental magnitudes were transformed to the Johnson B, V system using accurate calibration relations based on a large sample of Landolt-Stetson equatorial standard stars, which were observed on the same nights as the cluster stars. Residual analysis of the equatorial standards used for the calibration, and validation of the new photometry using Stetson's sample of secondary standards in the vicinities of the five Large Magellanic Cloud clusters, shows excellent agreement with our values in both magnitudes and colors. Color-magnitude diagrams reaching to the main-sequence turnoffs at V ∼ 22 mag, sigma-magnitude diagrams, and various other summaries are presented for each cluster to illustrate the range and quality of the new photometry. The photometry should prove useful for future studies of the Magellanic Cloud globular clusters, particularly studies of their variable stars.

• OSTI ID: 22340216
• Journal Information: Astronomical Journal (New York, N.Y. Online), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 6 Vol. 147; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
CALIBRATION
CHARGE-COUPLED DEVICES
COLOR
DATA
DIAGRAMS
GALAXY CLUSTERS
MAGELLANIC CLOUDS
PHOTOMETRY
STAR CLUSTERS
TELESCOPES
VALIDATION
VARIABLE STARS