Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-25T23:46:50.502Z Has data issue: false hasContentIssue false

Can we infer the Initial Mass Function of galaxies at z ~ 2?

Published online by Cambridge University Press:  17 August 2016

Themiya Nanayakkara
Affiliation:
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia email: [email protected]
Karl Glazebrook
Affiliation:
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
The ZFIRE Team
Affiliation:
website: http://zfire.swinburne.edu.au
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.

Recent studies show increasing evidence for the possibility of the Initial Mass Function (IMF) of galaxies to vary as a function of numerous physical parameters. These studies mainly focus on the low redshift galaxies (at z≤0.1) and is not backed by any studies at higher redshifts. Using MOSFIRE data from KECK, we use the Hα Equivalent-Width (EW) as a proxy for the IMF to study in situ IMF of galaxies at z ~ 2. In this proceedings we focus on the underlying physics of this method and present our initial findings. More work is needed to interpret the results accurately and will be presented in our future papers.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2016 

References

Baldry, I. K. & Glazebrook, K. 2003, ApJ, 593, 258 Google Scholar
Bastian, N., Covey, K. R., & Meyer, M. R. 2010, A&AR, 48, 339 Google Scholar
Calzetti, D., Armus, L., Bohlin, R. C., et al. 2000, ApJ, 533, 682 CrossRefGoogle Scholar
Calzetti, D., Kinney, A. L., & Storchi-Bergmann, T. 1994, ApJ, 429, 582 Google Scholar
Cardelli, J. A., Clayton, G. C., & Mathis, J. S. 1989, ApJ, 345, 245 CrossRefGoogle Scholar
Cappellari, M., McDermid, R. M., Alatalo, K., et al. 2012, Nature, 484, 485 Google Scholar
Chabrier, G. 2003, Publications of the Astronomical Society of the Pacific 115 pp. 763 Google Scholar
Chattopadhyay, T., De, T., Warlu, B., & Chattopadhyay, A. K. 2015, ApJ, 808, 24 CrossRefGoogle Scholar
Conroy, C., Dutton, A. A., Graves, G. J., Mendel, J. T., & van Dokkum, P. G. 2013, Ap. Lett., 776, L26 Google Scholar
Ferreras, I., La Barbera, F., de la Rosa, I. G., et al. 2013, MNRAS, 429, L15 Google Scholar
Ferreras, I., Weidner, C., Vazdekis, A., & La Barbera, F. 2015, MNRAS, 448, L82 Google Scholar
Fioc, M. & Rocca-Volmerange, B. 1997, A&A, 326, 950 Google Scholar
Gunawardhana, M. L. P., Hopkins, A. M., Sharp, R. G., et al. 2011, MNRAS, 415, 1647 CrossRefGoogle Scholar
Hoversten, E. A. & Glazebrook, K. 2008, ApJ, 675, 163 CrossRefGoogle Scholar
Kennicutt, R. C. Jr. 1983, ApJ, 272, 54 Google Scholar
Kroupa, P. 2001, MNRAS, 322, 231 CrossRefGoogle Scholar
Meurer, G. R. 2011, in Astronomical Society of the Pacific Conference Series, Vol. 440, UP2010: Have Observations Revealed a Variable Upper End of the Initial Mass Function?, ed. Treyer, M., Wyder, T., Neill, J., Seibert, M., & Lee, J., 189Google Scholar
Miller, G. E. & Scalo, J. M. 1979, ApJS, 41, 513 Google Scholar
Pettini, M., Steidel, C. C., Adelberger, K. L., Dickinson, M., & Giavalisco, M. 2000, ApJ, 528, 96 Google Scholar
Quider, A. M., Pettini, M., Shapley, A. E., & Steidel, C. C. 2009, MNRAS, 398, 1263 CrossRefGoogle Scholar
Reddy, N. A., Kriek, M., Shapley, A. E., et al. 2015, ApJ, 806, 259 Google Scholar
Salpeter, E. E., 1955, Apj, Vol. 121, 161 CrossRefGoogle Scholar
Scalo, J. M. 1986, in IAU Symposium, Vol. 116, Luminous Stars and Associations in Galaxies, ed. De Loore, C. W. H., Willis, A. J., & Laskarides, P., 451–466Google Scholar
Smith, R. J. 2014, MNRAS, 443, L69 Google Scholar
Steidel, C. C., Shapley, A. E., Pettini, M., et al. 2004, ApJ, 604, 534 Google Scholar
van Dokkum, P. G. & Conroy, C. 2010, Nature, 468, 940 Google Scholar
Weidner, C., Ferreras, I., Vazdekis, A., & La Barbera, F. 2013, MNRAS, 435, 2274 Google Scholar