K-corrections and filter transformations in the ultraviolet, optical, and near infrared
| dc.creator | Blanton, Michael R. | |
| dc.creator | Roweis, Sam | |
| dc.date | 2006-06-07 | |
| dc.date.accessioned | 2026-07-07T11:25:41Z | |
| dc.date.available | 2026-07-07T11:25:41Z | |
| dc.description | Template fits to observed galaxy fluxes allow calculation of K-corrections and conversions among observations of galaxies at various wavelengths. We present a method for creating model-based template sets given a set of heterogeneous photometric and spectroscopic galaxy data. Our technique, non-negative matrix factorization, is akin to principle component analysis (PCA), except that it is constrained to produce nonnegative templates, it can use a basis set of models (rather than the delta function basis of PCA), and it naturally handles uncertainties, missing data, and heterogeneous data (including broad-band fluxes at various redshifts). The particular implementation we present here is suitable for ultraviolet, optical, and near-infrared observations in the redshift range 0 < z < 1.5. Since we base our templates on stellar population synthesis models, the results are intepretable in terms of approximate stellar masses and star-formation histories. We present templates fit with this method to data from GALEX, Sloan Digital Sky Survey spectroscopy and photometry, the Two-Micron All Sky Survey, the Deep Extragalactic Evolutionary Probe and the Great Observatories Origins Deep Survey. In addition, we present software for using such data to estimate K-corrections and stellar masses. | |
| dc.description | 43 pages, 20 figures, submitted to AJ, software and full-resolution figures available at http://cosmo.nyu.edu/blanton/kcorrect | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0606170 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0606170 | |
| dc.identifier | Astron.J.133:734-754,2007 | |
| dc.identifier | doi:10.1086/510127 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/195583 | |
| dc.subject | Astrophysics | |
| dc.title | K-corrections and filter transformations in the ultraviolet, optical, and near infrared | |
| dc.type | text |