# 2D kinematic study of the central region of NGC 4501

**Authors:** P. Repetto, M. Faundez-Abans, P. Freitas-Lemes, I. Rodrigues, M. de, Oliveira-Abans

arXiv: 1702.00023 · 2017-02-02

## TL;DR

This study uses integral field spectroscopy to analyze the gas kinematics and stellar populations in NGC 4501, revealing outflows, an active nucleus, and an old stellar population with no ongoing starburst activity.

## Contribution

It provides detailed two-dimensional kinematic maps and evidence of outflows in NGC 4501, enhancing understanding of the galaxy's nuclear activity and gas dynamics.

## Key findings

- Detection of non-circular motions indicating outflows
- Dominance of old stellar population in the central regions
- Confirmation of active galactic nucleus nature

## Abstract

GMOS-IFU observational data were used to study the detailed two dimensional gas kinematics and morphological structures within the ~500x421 pc^2 of the active Seyfert 2 galaxy NGC 4501. We provide empirical evidences of possible outflowing material from the central zones of NGC 4501 to the observer. In addition, we performed a spectral synthesis and diagnostic diagram analysis to determine respectively the dominant stellar population in the inner disc of this galaxy and to unveil the actual nature of the central engine of NGC 4501. The principal finding of this work is that the central regions of NGC 4501 are dominated by non circular motions connected to probable outflows of matter from the nuclear regions of this galaxy. A predominant old stellar population inhabits the internal zones of NGC 4501 excluding the possibility of ongoing starburst activity in the central parsecs of this galaxy. The latter result is confirmed by the diagnostic diagram analysis that establishes a preponderant active galactic nucleus character for NGC 4501. These outcomes together provide a general description of the gas motion and the corresponding nuclear activity in the internal disc of NGC 4501 in an attempt to elucidate the possible relation among the central activity and the induced kinematic properties of this nearby galaxy.

## Full text

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## Figures

11 figures with captions in the complete paper: https://tomesphere.com/paper/1702.00023/full.md

## References

85 references — full list in the complete paper: https://tomesphere.com/paper/1702.00023/full.md

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Source: https://tomesphere.com/paper/1702.00023