Bookcover of Unveiling the globular cluster systems of early-type galaxies
Booktitle:

Unveiling the globular cluster systems of early-type galaxies

A wide-field imaging study of early-type galaxies to investigate their evolutionary history

LAP LAMBERT Academic Publishing (2016-10-20 )

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ISBN-13:

978-3-659-96507-4

ISBN-10:
3659965073
EAN:
9783659965074
Book language:
English
Blurb/Shorttext:
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.
Publishing house:
LAP LAMBERT Academic Publishing
Website:
https://www.lap-publishing.com/
By (author) :
Sreeja Sudarsanan Kartha
Number of pages:
180
Published on:
2016-10-20
Stock:
Available
Category:
Astronomy
Price:
64.90 €
Keywords:
Early-type galaxies, Globular clusters, NGC 720, NGC 1023, NGC 2768, NGC 3607, NGC 3608, Wide-field imaging, SLUGGS survey

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