Synchrotron superbubble in the galaxy IC10: the ionized gas structure, kinematics, and emission spectrum

TL;DR

This study examines the ionized gas structure, kinematics, and emission spectrum of the synchrotron superbubble in galaxy IC 10, revealing a filamentary shell with measured expansion velocity, mass, and energy, contributing to understanding its nature.

Contribution

It provides detailed observational analysis of the superbubble's structure and kinematics using multiple spectroscopic methods, offering new insights into its physical properties.

Findings

Identified a bright filamentary optical shell in the superbubble.

Measured the shell's expansion velocity, mass, and kinetic energy.

Discussed the possible nature and origin of the superbubble.

Abstract

We have investigated the structure, kinematics, and emission spectrum of the ionized gas in the synchrotron superbubble in the irregular galaxy IC 10 based on observations with the 6-m Special Astrophysical Observatory telescope with the SCORPIO focal reducer in three modes: direct imaging in the [SII](6717+6731)A lines, long-slit spectroscopy, and spectroscopy with a scanning Fabry--Perot interferometer. We have identified a bright (in the [SII] lines) filamentary optical shell and determined its expansion velocity, mass, and kinetic energy. The nature of the object is discussed.