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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Unveiling the globular cluster systems of early-type galaxies

Unveiling the globular cluster systems of early-type galaxies

Sudarsanan Kartha, Sreeja

Paperback

Astronomy & Space

ISBN10: 3659965073
ISBN13: 9783659965074
Publisher: LAP Lambert Academic Publishing
Published: Oct 20 2016
Pages: 180
Weight: 0.55
Height: 0.41 Width: 6.00 Depth: 9.00
Language: English
Globular cluster (GC) systems can be used as powerful tools to investigate the evolutionary history of early-type galaxies (ETGs). In this work, we study the GC systems of five ETGs using wide-field imaging data. We obtained the data from the Subaru telescope, the Canada-France-Hawaii telescope and the Hubble Space Telescope. Complementary spectroscopic data from the Keck II telescope were also utilised for this thesis. We present a wide-field imaging study of GC systems in five ETGs (NGC 720, NGC 1023, NGC 2768, NGC 3607 and NGC 3608) to determine their GC system properties. With the aid of literature data, we present a new correlation of GC system extent with host galaxy eeffective radius. We find a dependence of the relative fraction of blue to red GCs with host galaxy environmental density for lenticular galaxies (but not for elliptical or spiral galaxies). We propose that tidal interactions between galaxies in cluster environments might be the reason behind the observed trend for lenticular galaxies. A one-to-one relation between the ellipticities of red GCs and the galaxy stellar light emphasises the evolutionary similarities between them.

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