STUDY OF NGC 5128 GLOBULAR CLUSTERS UNDER MULTIVARIATE STATISTICAL PARADIGM
نویسندگان
چکیده
منابع مشابه
Globular clusters in NGC 5128 ?
We used the Wide Field Planetary Camera 2 aboard the Hubble Space Telescope to search for globular clusters in the inner regions of the nearby giant elliptical galaxy NGC 5128. This galaxy is believed to be the product of a merger between a large elliptical galaxy and a small late-type spiral between 160 and 500 Myr ago. We identified 21 globular cluster candidates and measured their core radii...
متن کاملGlobular Clusters as Probes of Galaxy Evolution : NGC 5128
We present the results of our analysis of the photometric data of globular clusters in the elliptical galaxy NGC 5128 (Cen A). We show that the integrated colour U −B can be an effective metallicity indicator for simple stellar populations. This is because it is sensitive to metallicity via the opacity effect but relatively insensitive to the effective main sequence turn-off temperature of the ...
متن کاملA Population of Massive Globular Clusters in Ngc 5128
We present velocity dispersion measurements of 14 globular clusters in NGC 5128 (Centarus A) obtained with the MIKE echelle spectrograph on the 6.5m Magellan Clay telescope. These clusters are among the most luminous globular clusters in NGC 5128 and have velocity dispersions comparable to the most massive clusters known in the Local Group, ranging from 10 – 30 km s−1. We describe in detail our...
متن کاملSizes of Confirmed Globular Clusters in NGC 5128 : A Wide - Field High - Resolution Study
Using Magellan/IMACS images covering a 1.2 x 1.2 sq. degree FOV with seeing of 0.4”-0.6”, we have applied convolution techniques to analyse the light distribution of 364 confirmed globular cluster in the field of NGC 5128 and to obtain their structural parameters. Combining these parameters with existing Washington photometry from Harris et al. (2004), we are able to examine the size difference...
متن کاملComparison between the Globular Clusters in Ngc 5128 and the Galaxy Globular
Some of the properties of the globular clusters in NGC 5128 the nearest giant elliptical galaxy are compared to those of Galactic globular clusters. Assuming the colormetallicity relations that hold for Galactic globular clusters one finds that the metal-poor clusters in NGC 5128 that have [Fe/H] < -1.80 are significantly fainter than are the more metal-rich globulars in that galaxy. No such me...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2009
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/705/2/1533