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Properties of the cluster population of NGC 1566 and their implications

Hollyhead, K, Adamo, A, Bastian, N, Gieles, M and Ryon, JE (2016) Properties of the cluster population of NGC 1566 and their implications Monthly Notices of the Royal Astronomical Society.

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Abstract

We present results of a photometric study into the cluster population of NGC 1566, a nearby grand design spiral galaxy, sampled out to a Galactocentric radius of ≈5.5 kpc. The shape of the mass-limited age distribution shows negligible variation with radial distance from the centre of the galaxy, and demonstrates three separate sections, with a steep beginning, flat middle and steep end. The luminosity function can be approximated by a power law at lower luminosities with evidence of a truncation at higher luminosity. The power law section of the luminosity function of the galaxy is best fitted by an index ≈−2, in agreement with other studies, and is found to agree with a model luminosity function, which uses an underlying Schechter mass function. The recovered power law slope of the mass distribution shows a slight steepening as a function of galactocentric distance, but this is within error estimates. It also displays a possible truncation at the high mass end. Additionally, the cluster formation efficiency (Γ) and the specific U-band luminosity of clusters (TL(U)) are calculated for NGC 1566 and are consistent with values for similar galaxies. A difference in NGC 1566, however, is that the fairly high star formation rate is in contrast with a low ΣSFR and Γ, indicating that Γ can only be said to depend strongly on ΣSFR, not the star formation rate.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Hollyhead, KUNSPECIFIEDUNSPECIFIED
Adamo, AUNSPECIFIEDUNSPECIFIED
Bastian, NUNSPECIFIEDUNSPECIFIED
Gieles, MUNSPECIFIEDUNSPECIFIED
Ryon, JEUNSPECIFIEDUNSPECIFIED
Date : 13 May 2016
Identification Number : 10.1093/mnras/stw1142
Copyright Disclaimer : This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 16 Jun 2016 10:44
Last Modified : 16 Jun 2016 10:44
URI: http://epubs.surrey.ac.uk/id/eprint/811014

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