Rings and arcs around evolved stars – III. Physical conditions of the ring-like structures in the planetary nebula IC 4406 revealed by MUSE-Reference-Cited by-同舟云学术

Rings and arcs around evolved stars – III. Physical conditions of the ring-like structures in the planetary nebula IC 4406 revealed by MUSE

Published:2022-03-08 Issue:2 Volume:513 Page:2862-2868
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Ramos-Larios G¹^ORCID,Toalá J A²^ORCID,Rodríguez-González J B²^ORCID,Guerrero M A³^ORCID,Gómez-González V M A²⁴^ORCID

Affiliation:

1. Instituto de Astronomía y Meteorología, Departamento de Física. CUCEI, Univ. de Guadalajara, Av. Vallarta 2602, Arcos Vallarta, 44130 Guadalajara, Mexico

2. Instituto de Radioastronomía y Astrofísica (IRyA) , UNAM Campus Morelia, Apartado postal 3-72, 58090 Morelia, Michoacán, Mexico

3. Instituto de Astrofísica de Andalucía , IAA-CSIC, Glorieta de la Astronomía S/N, E-18008 Granada, Spain

4. Institute for Physics and Astronomy, Universität Potsdam , Karl-Liebknecht-Str. 24/25, D-14476 Potsdam, Germany

Abstract

ABSTRACT We present the analysis of Very Large Telescope Multi Unit Spectroscopic Explorer (MUSE) observations of the planetary nebula (PN) IC 4406. MUSE images in key emission lines are used to unveil the presence of at least five ring-like structures north and south of the main nebula of IC 4406. MUSE spectra are extracted from the rings to unambiguously assess for the first time in a PN their physical conditions, electron density (ne), and temperature (Te). The rings are found to have similar Te as the rim of the main nebula, but smaller ne. Ratios between different ionic species suggest that the rings of IC 4406 have a lower ionization state than the main cavity, in contrast to what was suggested for the rings in NGC 6543, the Cat’s Eye Nebula.

Funder

CONACYT

Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México

UNAM

DGAPA, UNAM

Ministerio de Ciencia, Innovación y Universidades

FEDER

NASA

ESA

Space Telescope Science Institute

NRC

CSA