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A survey of galaxy redshifts. I - Data reduction techniques
Abstract
A magnitude-limited redshift survey of galaxies having B magnitudes no fainter than 14.5, galactic latitudes no less than 40 deg, and nonnegative declinations is currently being undertaken. This paper presents in some detail the methods of data reduction, which are based on cross correlation against filtered templates. Expressions are presented for the uncertainty of a measured redshift, for the internal broadening of the object, and for the uncertainty of this broadening. Comparison of the optical data with previously published 21-cm data shows no systematic errors and yields excellent agreement with the internal error analysis. The method of analyzing velocity dispersions is quite promising for further application. A series of spectra are presented as examples to show the power and limitations of the correlation techniques.
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Citations
Cited by
Sloan Digital Sky Survey: Early Data Release
Stoughton, C., Lupton, R. H., Bernardi, M., Blanton, M. R., Burles, S., Castander, F. J., Connolly, A. J., Eisenstein, D. J., Frieman, J. A., Hennessy, G. S., et al. (2002) · The Astronomical Journal · doi:10.1086/324741 · Cited by 2,390
The 2dF Galaxy Redshift Survey: spectra and redshifts
Colless, M., Dalton, G., Maddox, S., Sutherland, W., Norberg, P., Cole, S., Bland-Hawthorn, J., Bridges, T., Cannon, R., Collins, C., et al. (2001) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.2001.04902.x · Cited by 2,367
A dwarf satellite galaxy in Sagittarius
Ibata, R. A., Gilmore, G., & Irwin, M. J. (1994) · Nature · doi:10.1038/370194a0 · Cited by 1,381
Improved redshifts for SDSS quasar spectra: Improved SDSS redshifts
Hewett, P. C., & Wild, V. (2010) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2010.16648.x · Cited by 272
The Target-selection Pipeline for the Dark Energy Spectroscopic Instrument
Myers, A. D., Moustakas, J., Bailey, S., Weaver, B. A., Cooper, A. P., Forero-Romero, J. E., Abolfathi, B., Alexander, D. M., Brooks, D., Chaussidon, E., et al. (2023) · The Astronomical Journal · doi:10.3847/1538-3881/aca5f9 · Cited by 158
“…include the development of techniques to perform spectroscopic reductions in near real-time to improve the completeness of redshift surveys (e.g. Tonry & Davis 1979), and the automated cataloging of galaxies using scanning machines in order to better sample and char- acterize…”
Method
Metadata
- Authors
- Tonry, J., & Davis, M.
- Venue
- The Astronomical Journal
- Publisher
- American Astronomical Society
- Published
- 1979-10
- Volume
- 84
- Pages
- 1511
- ISSN
- 0004-6256 (ISSN-L)
- OpenAlex
- W2601053151
- Cited by
- 1,475
- References
- 0
- FWCI
- 2.97
- Type
- journal article
- Language
- en
- Open access
- closed
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- Tonry, J., & Davis, M. (1979). A survey of galaxy redshifts. I - Data reduction techniques. The Astronomical Journal. https://doi.org/10.1086/112569
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