$μ$--PhotoZ: Photometric Redshifts by Inverting the Tolman Surface Brightness Test
| dc.creator | Kurtz, Michael J. | |
| dc.creator | Geller, Margaret J. | |
| dc.creator | Fabricant, Daniel G. | |
| dc.creator | Wyatt, William F. | |
| dc.creator | Dell'Antonio, Ian P. | |
| dc.date | 2007-07-03 | |
| dc.date.accessioned | 2026-07-07T11:17:29Z | |
| dc.date.available | 2026-07-07T11:17:29Z | |
| dc.description | Surface brightness is a fundamental observational parameter of galaxies. We show, for the first time in detail, how it can be used to obtain photometric redshifts for galaxies, the $μ$-PhotoZ method. We demonstrate that the Tolman surface brightness relation, $μ\propto (1+z)^{-4}$, is a powerful tool for determining galaxy redshifts from photometric data. We develop a model using $μ$ and a color percentile (ranking) measure to demonstrate the $μ$-PhotoZ method. We apply our method to a set of galaxies from the SHELS survey, and demonstrate that the photometric redshift accuracy achieved using the surface brightness method alone is comparable with the best color-based methods. We show that the $μ$-PhotoZ method is very effective in determining the redshift for red galaxies using only two photometric bands. We discuss the properties of the small, skewed, non-gaussian component of the error distribution. We calibrate $μ_r, (r-i)$ from the SDSS to redshift, and tabulate the result, providing a simple, but accurate look up table to estimate the redshift of distant red galaxies. | |
| dc.description | Accepted for publication in the Astronomical Journal | |
| dc.identifier | https://arxiv.org/abs/0707.0484 | |
| dc.identifier | http://arxiv.org/abs/0707.0484 | |
| dc.identifier | Astron.J.134:1360-1367,2007 | |
| dc.identifier | doi:10.1086/521430 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/193022 | |
| dc.subject | Astrophysics | |
| dc.title | $μ$--PhotoZ: Photometric Redshifts by Inverting the Tolman Surface Brightness Test | |
| dc.type | text |