NEW g'r'i'z' PHOTOMETRY OF THE NGC 5128 GLOBULAR CLUSTER SYSTEM

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/140/6/2101· OSTI ID:21443132

Sinnott, Brendan; Hou, Annie; Harris, William E ^[1]; Anderson, Rachel ^[2]

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1. Department of Physics and Astronomy, McMaster University, Hamilton ON L8S 4M1 (Canada)
2. Space Telescope Science Institute, Baltimore, MD 21218 (United States)

We present new photometry for 323 of the globular clusters in NGC 5128 (Centaurus A), measured for the first time in the g'r'i'z' filter system. The color indices are calibrated directly to standard stars in the g'r'i'z' system and are used to establish the fiducial mean colors for the blue and red (low and high metallicity) globular cluster sequences. We also use spectroscopically measured abundances to establish the conversion between the most metallicity-sensitive colors ((g' - r'){sub 0}, (g' - i'){sub 0}) and metallicity, [Fe/H].

• OSTI ID: 21443132
• Journal Information: Astronomical Journal (New York, N.Y. Online), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 6 Vol. 140; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ABUNDANCE
COLOR
GALAXIES
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
STARS