Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-25T18:31:43.039Z Has data issue: false hasContentIssue false

Spectroscopic study of formation, evolution and interaction of M31 and M33 with star clusters

Published online by Cambridge University Press:  07 March 2016

Zhou Fan
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang Dist., Beijing, China email: [email protected]
Yanbin Yang
Affiliation:
GEPI, Observatoire de Paris, CNRS, 5 Place Jules Janssen, Meudon F92195, France
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The recent studies show that the formation and evolution process of the nearby galaxies are still unclear. By using the Canada France Hawaii Telescope (CFHT) 3.6m telescope, the PanDAS shows complicated substructures (dwarf satellite galaxies, halo globular clusters, extended clusters, star streams, etc.) in the halo of M31 to ~150 kpc from the center of galaxy and M31-M33 interaction has been studied. In our work, we would like to investigate formation, evolution and interaction of M31 and M33, which are the nearest two spiral galaxies in Local Group. The star cluster systems of the two galaxies are good tracers to study the dynamics of the substructures and the interaction. Since 2010, the Xinglong 2.16m, Lijiang 2.4m and MMT 6.5m telescopes have been used for our spectroscopic observations. The radial velocities and Lick absorption-line indices can thus be measured with the spectroscopy and then ages, metallicities and masses of the star clusters can be fitted with the simple stellar population models. These parameters could be used as the input physical parameters for numerical simulations of M31-M33 interaction.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2016 

References

Fan, Z., Huang, Y. F., Li, J. Z., Zhou, X., Ma, J., et al. 2011, RAA, 11, 1298Google Scholar
Fan, Z., Huang, Y. F., Li, J. Z., Zhou, X., Ma, J., & Zhao, Y. H. 2012, RAA, 12, 829Google Scholar
Galleti, S., Federici, L., Bellazzini, M., Fusi Pecci, F., & Macrina, S. 2004, A&A, 416, 917Google Scholar
McConnachie, A. W., et al. 2009, Nature, 461, 66Google Scholar
Perina, S., Cohen, J. G., Barmby, P., et al. 2010, A&A, 511, A23Google Scholar
Thomas, D., Maraston, C., & Johansson, J. 2011, MNRAS, 412, 2183Google Scholar
Worthey, G., Faber, S. M., Gonzalez, J. J., & Burstein, D. 1994, ApJS, 94, 687Google Scholar