ell_gal_profile


This dataset gives the radial surface brightness profiles for three elliptical galaxies in the nearby Virgo galaxy cluster (Kormendy et al. 2009).  They are useful for exercising nonlinear regression in 2-dimensions; the Sersic (1968) profile function is commonly used.  The samples are described in Appendix C.11 of Feigelson & Babu (2012) with regression illustrated in Chapter 7. 


datasets

A collection of 19 datasets from contemporary astronomical research.  They are described the textbook `Modern Statistical Methods for Astronomy with R Applications' by Eric D. Feigelson and G. Jogesh Babu (Cambridge University Press, 2012, Appendix C) or on the website of Penn State's Center for Astrostatistics (http://astrostatistics.psu.edu/datasets).  These datasets can be used to exercise methodology involving: density estimation; heteroscedastic measurement errors; contingency tables; two-sample hypothesis tests; spatial point processes; nonlinear regression; mixture models; censoring and truncation; multivariate analysis; classification and clustering; inhomogeneous Poisson processes; periodic and stochastic time series analysis.

Eric D

astrodatR

Astronomical Data

ell_gal_profile function

A table containing 150 rows and 3 columns with header row. It includes 58 entries for NGC 4472, 52 rows for NGC 4406, and 40 rows for NGC 4551.

Format

Feigelson and Babu (2012), Kormendy et al. (2009), Sersic (1968)

ell_gal_profile: Elliptical galaxy radial profiles

Description

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References