Maximum likelihood method for fitting the Fundamental Plane of the 6dF Galaxy Survey

C. Magoulas; M. Colless; D. Jones; C. Springob; J. Mould

doi:10.1017/S1743921310003303

Maximum likelihood method for fitting the Fundamental Plane of the 6dF Galaxy Survey

C. Magoulas, M. Colless, D. Jones, C. Springob, J. Mould

Research output: Contribution to journal › Article › peer-review

Abstract

We have used over 10,000 early-type galaxies from the 6dF Galaxy Survey (6dFGS) to construct the Fundamental Plane across the optical and near-infrared passbands. We demonstrate that a maximum likelihood fit to a multivariate Gaussian model for the distribution of galaxies in size, surface brightness and velocity dispersion can properly account for selection effects, censoring and observational errors, leading to precise and unbiased parameters for the Fundamental Plane and its intrinsic scatter. This method allows an accurate and robust determination of the dependencies of the Fundamental Plane on variations in the stellar populations and environment of early-type galaxies.

Original language	English
Pages (from-to)	376-378
Number of pages	3
Journal	Proceedings of the International Astronomical Union
Volume	5
Issue number	S262
DOIs	https://doi.org/10.1017/S1743921310003303
Publication status	Published - Aug 2009
Externally published	Yes

Keywords

Galaxies: distance and redshifts
Large-scale structure of Universe
Surveys

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10.1017/S1743921310003303

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abstract = "We have used over 10,000 early-type galaxies from the 6dF Galaxy Survey (6dFGS) to construct the Fundamental Plane across the optical and near-infrared passbands. We demonstrate that a maximum likelihood fit to a multivariate Gaussian model for the distribution of galaxies in size, surface brightness and velocity dispersion can properly account for selection effects, censoring and observational errors, leading to precise and unbiased parameters for the Fundamental Plane and its intrinsic scatter. This method allows an accurate and robust determination of the dependencies of the Fundamental Plane on variations in the stellar populations and environment of early-type galaxies.",

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author = "C. Magoulas and M. Colless and D. Jones and C. Springob and J. Mould",

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doi = "10.1017/S1743921310003303",

language = "English",

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journal = "Proceedings of the International Astronomical Union",

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T1 - Maximum likelihood method for fitting the Fundamental Plane of the 6dF Galaxy Survey

AU - Magoulas, C.

AU - Colless, M.

AU - Jones, D.

AU - Springob, C.

AU - Mould, J.

PY - 2009/8

Y1 - 2009/8

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AB - We have used over 10,000 early-type galaxies from the 6dF Galaxy Survey (6dFGS) to construct the Fundamental Plane across the optical and near-infrared passbands. We demonstrate that a maximum likelihood fit to a multivariate Gaussian model for the distribution of galaxies in size, surface brightness and velocity dispersion can properly account for selection effects, censoring and observational errors, leading to precise and unbiased parameters for the Fundamental Plane and its intrinsic scatter. This method allows an accurate and robust determination of the dependencies of the Fundamental Plane on variations in the stellar populations and environment of early-type galaxies.

KW - Galaxies: distance and redshifts

KW - Large-scale structure of Universe

KW - Surveys

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