Published October 8, 2003
| public
Book Section - Chapter
Parameterisation of Galaxy Spectra in the 2dF Galaxy Redshift Survey
Abstract
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.
Additional Information
© 2001 Springer-Verlag Berlin Heidelberg. First Online: 08 October 2003.Additional details
- Eprint ID
- 103830
- DOI
- 10.1007/10849171_39
- Resolver ID
- CaltechAUTHORS:20200610-151236950
- Created
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2020-06-10Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Series Name
- ESO Astrophysics Symposia