A Catalogue of Two-Dimensional Photometric Decompositions in the SDSS-DR7 Spectroscopic Main Galaxy Sample: Extension to g- and i-Bands

TL;DR

This paper extends a galaxy photometric decomposition catalogue to include g- and i-band data, providing detailed fits and color information for approximately 700,000 SDSS galaxies, enhancing multi-band galaxy analysis capabilities.

Contribution

The study adds g- and i-band photometric decompositions to an existing SDSS galaxy catalogue, enabling more comprehensive multi-band galaxy structure analysis.

Findings

Extended catalogue includes g- and i-band fits for ~700,000 galaxies.

Provides fixed aperture magnitudes and colors for all galaxies.

Maintains the original flagging system with adjustments for signal-to-noise.

Abstract

We extend the catalogue of two-dimensional, PSF-corrected de Vacouleurs, Sersic, de Vacouleurs+Exponential, and Sersic+Exponential fits of ~7x10^5 galaxies presented in Meert, Vikram & Bernardi (2015) to include the g- and i-bands. Fits are analysed using the physically motivated flagging system presented in the original text, making adjustments for the differing signal-to-noise when necessary. We compare the fits in each of the g-, r-, and i-bands. Fixed aperture magnitudes and colours are also provided for all galaxies. The catalogues are available in electronic format.