Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-07-23
Astrophys.J.Suppl.175:297-313,2008
Astronomy and Astrophysics
Astrophysics
21 pages with 8 color figures. ApJS, in press. Minor modifications from previous version
Scientific paper
10.1086/524984
With the Sixth Data Release of the Sloan Digital Sky Survey, the imaging of the Northern Galactic Cap is now complete. The survey contains images and parameters of roughly 287 million objects over 9583 deg^2, and 1.27 million spectra of stars, galaxies, quasars and blank sky (for sky subtraction) selected over 7425 deg^2. This release includes much more extensive stellar spectroscopy than previously, and also includes detailed estimates of stellar temperatures, gravities, and metallicities. The results of improved photometric calibration are now available, with uncertainties of roughly 1% in g, r, i, and z, and 2% in u, substantially better than the uncertainties in previous data releases. The spectra in this data release have improved wavelength and flux calibration, especially in the extreme blue and extreme red, leading to the qualitatively better determination of stellar types and radial velocities. The spectrophotometric fluxes are now tied to point spread function magnitudes of stars rather than fiber magnitudes, giving a 0.35 mag change in the spectrophotometric flux scale. Systematic errors in the velocity dispersions of galaxies have been fixed, and the results of two independent codes for determining spectral classifications and redshifts are made available. (Abridged)
Adelman-McCarthy Jennifer K.
for the SDSS Collaboration
No associations
LandOfFree
The Sixth Data Release of the Sloan Digital Sky Survey does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Sixth Data Release of the Sloan Digital Sky Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Sixth Data Release of the Sloan Digital Sky Survey will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-109948