Scholarlink

Abstract <p>MaNGaL (Mapper of Narrow Galaxy Lines) is a tunable filter narrow-band photometer installed at the 2.5-m telescope of the Caucasian Mountain Observatory of the Sternberg Astronomical Institute at Lomonosov Moscow State University (CMO SAI MSU). It enables us to detect and study the gas clouds, ionized by UV-radiation from an active galactic nucleus (AGN). We present a brief overview of MaNGaL observations of various manifestations of AGN ionization cones: tracking of fading nuclear activity in merging galaxies; the cross-ionization of disc companion of galaxies; the discovery of a complex system of external emission filaments near the NGC 1142/1144, the first [OIII] map of a rare type of objects known as ‘‘green beans,’’ characterized by powerful, extended ionization cones at redshifts <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(z=0.2{-}0.4\)</EquationSource> <!--BPhysMGU2570178Smirnova-m1--> </InlineEquation>.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Observations of Ionized Gas around Active Galaxies at the 2.5-m CMO SAI MSU Telescope

  • 期刊论文

  • 发表日期：

    2025年12月1日

查看全文
  • A. A. Smirnova,
  • A. V. Moiseev,
  • A. Arshinova,
  • D. V. Oparin,
  • A. E. Perepelitsyn,
  • R. I. Uklein

摘要

Abstract

MaNGaL (Mapper of Narrow Galaxy Lines) is a tunable filter narrow-band photometer installed at the 2.5-m telescope of the Caucasian Mountain Observatory of the Sternberg Astronomical Institute at Lomonosov Moscow State University (CMO SAI MSU). It enables us to detect and study the gas clouds, ionized by UV-radiation from an active galactic nucleus (AGN). We present a brief overview of MaNGaL observations of various manifestations of AGN ionization cones: tracking of fading nuclear activity in merging galaxies; the cross-ionization of disc companion of galaxies; the discovery of a complex system of external emission filaments near the NGC 1142/1144, the first [OIII] map of a rare type of objects known as ‘‘green beans,’’ characterized by powerful, extended ionization cones at redshifts \(z=0.2{-}0.4\) .