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IC 485 : A candidate for a new disk-maser galaxy

Published online by Cambridge University Press:  07 February 2024

Elisabetta Ladu Open the ORCID record for Elisabetta Ladu [Opens in a new window] ,
Andrea Tarchi Open the ORCID record for Andrea Tarchi [Opens in a new window] ,
Paola Castangia Open the ORCID record for Paola Castangia [Opens in a new window] ,
Gabriele Surcis Open the ORCID record for Gabriele Surcis [Opens in a new window] ,
James A. Braatz ,
Francesca Panessa  and
Dominic Pesce
Elisabetta Ladu*
Affiliation:
Dipartimento di Fisica, Universitá degli Studi di Cagliari, S.P.Monserrato-Sestu km 0,700, I-09042 Monserrato (CA), Italy. INAF-Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047, Selargius (CA), Italy
Andrea Tarchi
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047, Selargius (CA), Italy
Paola Castangia
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047, Selargius (CA), Italy
Gabriele Surcis
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047, Selargius (CA), Italy
James A. Braatz
Affiliation:
National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
Francesca Panessa
Affiliation:
INAF - Istituto di Astrofisica e Planetologia Spaziali, via Fosso del Cavaliere 100, I-00133 Roma, Italy
Dominic Pesce
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
*
[email protected]
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Abstract

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Fundamental physical quantities of the nuclear regions of the Active Galactic Nuclei can be obtained using megamaser studies. In particular, disk-masers associated with accretion disks around the supermassive black holes are used, through high angular resolution measurements, to trace the disk geometry, to estimate the BH mass and to measure accurate distances to their host galaxies. In this contribution, we present the first results in continuum and spectral-line mode of a high-sensitivity, multi-epoch VLBI study of the nuclear region of the megamaser LINER galaxy IC 485.

Keywords

maserstechnique:high angular resolutiongalaxy:activegalaxy:individual (IC 485)
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 45 - 49
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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