Detailed HI kinematics of Tully-Fisher calibrator galaxies

TL;DR

This paper provides detailed spatially-resolved HI kinematics for 32 spiral galaxies used as calibrators for the Tully-Fisher relation, including high-quality rotation curves and comprehensive HI data analysis.

Contribution

It offers a uniform analysis and an atlas of HI kinematics for a diverse sample of Tully-Fisher calibrator galaxies, combining archival and new GMRT data.

Findings

High-resolution rotation curves derived from 2D velocity fields

Comprehensive HI profiles and surface density maps

A publicly available atlas of HI kinematics for calibrator galaxies

Abstract

We present spatially-resolved HI kinematics of 32 spiral galaxies which have Cepheid or/and Tip of the Red Giant Branch distances, and define a calibrator sample for the Tully-Fisher relation. The interferometric HI data for this sample were collected from available archives and supplemented with new GMRT observations. This paper describes an uniform analysis of the HI kinematics of this inhomogeneous data set. Our main result is an atlas for our calibrator sample that presents global HI profiles, integrated HI column-density maps, HI surface density profiles and, most importantly, detailed kinematic information in the form of high-quality rotation curves derived from highly-resolved, two-dimensional velocity fields and position-velocity diagrams.