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Parameterisation of Galaxy Spectra in the 2dF Galaxy Redshift Survey

Madgwick, Darren and Lahav, Ofer and Taylor, Keith (2003) Parameterisation of Galaxy Spectra in the 2dF Galaxy Redshift Survey. In: Mining the Sky. ESO Astrophysics Symposia. Springer , Berlin, pp. 331-336. ISBN 978-3-540-42468-0.

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The 2dF Galaxy Redshift Survey has already yielded over 130,000 galaxy spectra (out of the planned 250,000). We present a method for the parameterisation of galaxy spectra in the 2dF and other large redshift surveys using a new continuous parameter η = 0.44 pc₁−pc₂, based on a Principal Components Analysis (where pc₁ and pc₂ are the projections onto the first and second principal components respectively). This parameter is designed to be robust to instrumental uncertainties and it represents the absorption/emission strength of a galaxy.

Item Type:Book Section
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Additional Information:© 2001 Springer-Verlag Berlin Heidelberg. First Online: 08 October 2003.
Series Name:ESO Astrophysics Symposia
Record Number:CaltechAUTHORS:20200610-151236950
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103830
Deposited By: Tony Diaz
Deposited On:10 Jun 2020 22:45
Last Modified:10 Jun 2020 22:45

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