The DOI matches its Crossref record; 18 of the 18 references it cites were found in a registry or an index.
Improved redshifts for SDSS quasar spectra: Improved SDSS redshifts
Open accessAbstract
A systematic investigation of the relationship between different redshift estimation schemes for more than 91 000 quasars in the Sloan Digital Sky Survey (SDSS) Data Release 6 is presented. The publicly available SDSS quasar redshifts are shown to possess systematic biases of (600 km s−1) over both small and large redshift intervals. Empirical relationships between redshifts based on (i) Ca ii H&K host galaxy absorption, (ii) quasar [O ii] 3728, (iii) [O iii] 4960, 5008 emission and (iv) cross-correlation (with a master-quasar template) that includes, at increasing quasar redshift, the prominent Mg ii2799, C iii] 1908 and C iv1549 emission lines are established as a function of quasar redshift and luminosity. New redshifts in the resulting catalogue possess systematic biases, a factor of 20 lower compared to the SDSS redshift values; systematic effects are reduced to the level of (30 km s−1) per unit redshift or per unit absolute magnitude. Redshift errors, including components due both to internal reproducibility and to the intrinsic quasar-to-quasar variation among the population, are available for all quasars in the catalogue. The improved redshifts and their associated errors have wide applicability in areas such as quasar absorption outflows, quasar clustering, quasar-galaxy clustering and proximity-effect determinations.
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Cited by
Villar, V. A., Hosseinzadeh, G., Berger, E., Ntampaka, M., Jones, D. O., Challis, P., Chornock, R., Drout, M. R., Foley, R. J., Kirshner, R. P., et al. (2020) · The Astrophysical Journal · doi:10.3847/1538-4357/abc6fd · Cited by 92
Metadata
- Authors
- Hewett, P. C., & Wild, V.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2010-04
- Pages
- no-no
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W1830146004
- Cited by
- 272
- References
- 18
- FWCI
- 4.74
- Type
- journal article
- Language
- en
- Open access
- green
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