Mid-infrared Studies of Dusty Sources in the Galactic Center

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

Detalles Bibliográficos
Autores: Bhat, Harshitha K., Sabha, Nadeen B., Zajaček, Michal, Eckart, Andreas, Schödel, Rainer, Hosseini, S. Elaheh, Peißker, Florian, Zensus, Anton
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/273223
Acceso en línea:http://hdl.handle.net/10261/273223
Access Level:acceso abierto
Palabra clave:Galactic center
Infrared photometry
Galaxy kinematics
id ES_e2a1563baf3cdee5e4330a3cc2b6f8c8
oai_identifier_str oai:digital.csic.es:10261/273223
network_acronym_str ES
network_name_str España
repository_id_str
spelling Mid-infrared Studies of Dusty Sources in the Galactic CenterBhat, Harshitha K.Sabha, Nadeen B.Zajaček, MichalEckart, AndreasSchödel, RainerHosseini, S. ElahehPeißker, FlorianZensus, AntonGalactic centerInfrared photometryGalaxy kinematicsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.Mid-infrared (MIR) images of the Galactic center show extended gas and dust features along with bright infrared sources (IRS). Some of these dust features are a part of ionized clumpy streamers orbiting Sgr A*, known as the mini-spiral. We present their proper motions over a 12 yr time period and report their flux densities in N-band filters and derive their spectral indices. The observations were carried out by VISIR at the ESO's Very Large Telescope. High-pass filtering led to the detection of several resolved filaments and clumps along the mini-spiral. Each source was fit by a 2D Gaussian profile to determine the offsets and aperture sizes. We perform aperture photometry to extract fluxes in two different bands. We present the proper motions of the largest consistent set of resolved and reliably determined sources. In addition to stellar orbital motions, we identify a stream-like motion of extended clumps along the mini-spiral. We also detect MIR counterparts of the radio tail components of the IRS 7 source. They show a clear kinematical deviation with respect to the star. They likely represent Kelvin–Helmholtz instabilities formed downstream in the shocked stellar wind. We also analyze the shape and orientation of the extended late-type IRS 3 star that is consistent with the Atacama Large Millimeter/submillimeter Array submillimeter detection of the source. Its puffed-up envelope with a radius of ∼2 × 106 R⊙ could be the result of the red-giant collision with a nuclear jet, which was followed by tidal prolongation along the orbit. © 2022. The Author(s). Published by the American Astronomical Society.This work was supported in part by SFB 956, "Conditions and Impact of Star Formation." H.B. and E.H. are members of the International Max Planck Research School for Astronomy and Astrophysics at the Universities of Bonn and Cologne. We thank the Collaborative Research Centre 956, subproject A02, funded by the Deutsche Forschungsgemeinschaft (DFG), project ID 184018867. N.B.S. acknowledges financial support from the Austrian National Science Foundation through a FWF standalone grant No. P31154-N27. M.Z. acknowledges financial support by the GAČR EXPRO grant No. 21-13491X, "Exploring the Hot Universe and Understanding Cosmic Feedback." R.S. acknowledges financial support from the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa" award for the Instituto de Astrofisica de Andalucia (grant No. SEV-2017-0709) and financial support from national project PGC2018-095049-B-C21 (MCIU/AEI/FEDER, UE).Peer reviewedIOP PublishingMinisterio de Ciencia e Innovación (España)European CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/273223reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//SEV-2017-0709info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-095049-B-C21Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2732232026-05-22T06:33:51Z
dc.title.none.fl_str_mv Mid-infrared Studies of Dusty Sources in the Galactic Center
title Mid-infrared Studies of Dusty Sources in the Galactic Center
spellingShingle Mid-infrared Studies of Dusty Sources in the Galactic Center
Bhat, Harshitha K.
Galactic center
Infrared photometry
Galaxy kinematics
title_short Mid-infrared Studies of Dusty Sources in the Galactic Center
title_full Mid-infrared Studies of Dusty Sources in the Galactic Center
title_fullStr Mid-infrared Studies of Dusty Sources in the Galactic Center
title_full_unstemmed Mid-infrared Studies of Dusty Sources in the Galactic Center
title_sort Mid-infrared Studies of Dusty Sources in the Galactic Center
dc.creator.none.fl_str_mv Bhat, Harshitha K.
Sabha, Nadeen B.
Zajaček, Michal
Eckart, Andreas
Schödel, Rainer
Hosseini, S. Elaheh
Peißker, Florian
Zensus, Anton
author Bhat, Harshitha K.
author_facet Bhat, Harshitha K.
Sabha, Nadeen B.
Zajaček, Michal
Eckart, Andreas
Schödel, Rainer
Hosseini, S. Elaheh
Peißker, Florian
Zensus, Anton
author_role author
author2 Sabha, Nadeen B.
Zajaček, Michal
Eckart, Andreas
Schödel, Rainer
Hosseini, S. Elaheh
Peißker, Florian
Zensus, Anton
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Galactic center
Infrared photometry
Galaxy kinematics
topic Galactic center
Infrared photometry
Galaxy kinematics
description This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/273223
url http://hdl.handle.net/10261/273223
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICINN//SEV-2017-0709
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-095049-B-C21
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422427655634944
score 15.812429

Similares en LA Referencia