Spatially resolved spectroscopy of Coma cluster early-type galaxies IV. Completing the dataset

TL;DR

This paper presents comprehensive spectroscopic and photometric data for 12 early-type galaxies in the Coma cluster, including rotation, velocity dispersion, and stellar population indices, to facilitate dynamical modeling and stellar population analysis.

Contribution

It completes the dataset of spatially resolved spectroscopy for Coma cluster early-type galaxies, providing detailed kinematic and stellar population measurements for 12 galaxies.

Findings

Derived rotation curves and velocity dispersion profiles.

Measured line strength indices (Hbeta, Mg, Fe).

Provided Hubble Space Telescope photometry for 4 galaxies.

Abstract

The long-slit spectra obtained along the minor axis, offset major axis and diagonal axis are presented for 12 E and S0 galaxies of the Coma cluster drawn from a magnitude-limited sample studied before. The rotation curves, velocity dispersion profiles and the H_3 and H_4 coefficients of the Hermite decomposition of the line of sight velocity distribution are derived. The radial profiles of the Hbeta, Mg, and Fe line strength indices are measured too. In addition, the surface photometry of the central regions of a subsample of 4 galaxies recently obtained with Hubble Space Telescope is presented. The data will be used to construct dynamical models of the galaxies and study their stellar populations.