This study is a part of the Cosmicflows-4 project with the aim of measuring the distances of ~20,000 spiral galaxies in the local universe up to ~15,000 km/s. We have performed the photometry of our sample galaxies in optical (SDSS ugriz) and infrared bands (WISE W1 and W2). To measure distances, we use the correlation between the rotation rate of spirals and their absolute luminosity, known as the Tully-Fisher Relation (TFR). In this study, we present the calibration of the TFR in optical and infrared bands using a sub-sample of ~600 spiral galaxies located in 20 galaxy clusters. Exploring correlations among various observable features, we present a set of relations to reduce the scatter about the TFR with the goal of obtaining more accurate distances.
American Astronomical Society Meeting Abstracts
- Pub Date:
- January 2020