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

被引：35

作者：

Sinnott, Brendan ^{[1
]}

Hou, Annie ^{[1
]}

Anderson, Rachel ^{[2
]}

Harris, William E. ^{[1
]}

Woodley, Kristin A. ^{[3
]}

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[2] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[3] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

来源：

ASTRONOMICAL JOURNAL | 2010年 / 140卷 / 06期

关键词：

galaxies: individual (NGC 5128); globular clusters: general; FIELD WASHINGTON PHOTOMETRY; EARLY-TYPE GALAXIES; STRUCTURAL PARAMETERS; RADIAL-VELOCITY; LICK INDEXES; CENTAURUS-A; NGC-5128; METALLICITIES; KINEMATICS; ABUNDANCES;

D O I：

10.1088/0004-6256/140/6/2101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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')(0), (g' - i')(0)) and metallicity, [Fe/H].

引用

页码：2101 / 2108

页数：8

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