Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region

Aims. We study the O-type star HD 161853, which has been noted as a probable double-lined spectroscopic binary system. Methods. We secured high-resolution spectra of HD 161853 during the past nine years. We separated the two components in the system and measured their respective radial velocities fo...

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Authors: Gamen, R., Putkuri, C., Morrell, N. I., Barbá, R. H., Arias, J. I., Maíz Apellániz, Jesús, Walborn, N. R., Sota Ballano, Alfredo, Alfaro, Emilio J.
Format: article
Status:Published version
Publication Date:2015
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/387066
Online Access:http://hdl.handle.net/10261/387066
Access Level:Open access
Keyword:Binaries: spectroscopic
Stars: early-type
Stars: individual: HD 161853
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spelling Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II regionGamen, R.Putkuri, C.Morrell, N. I.Barbá, R. H.Arias, J. I.Maíz Apellániz, JesúsWalborn, N. R.Sota Ballano, AlfredoAlfaro, Emilio J.Binaries: spectroscopicStars: early-typeStars: individual: HD 161853Aims. We study the O-type star HD 161853, which has been noted as a probable double-lined spectroscopic binary system. Methods. We secured high-resolution spectra of HD 161853 during the past nine years. We separated the two components in the system and measured their respective radial velocities for the first time. Results. We confirm that HD 161853 is an ~1 Ma old binary system consisting of an O8 V star (M ≥ 22 M) and a B1-3 V star (M ≥ 7.2 M) at about 1.3 kpc. From the radial velocity curve, we measure an orbital period P = 2.66765 ± 0.00001 d and an eccentricity e = 0.121 ± 0.007. Its V-band light curve is constant within 0.014 mag and does not display eclipses, from which we impose a maximum orbital inclination i = 54 deg. HD 161853 is probably associated with an H ii region and a poorly investigated very young open cluster. In addition, we detect a compact emission region at 50 arcsec to HD 161853 in 22 μm-WISE and 24 μm-Spitzer images, which may be identified as a dust wave piled up by the radiation pressure of the massive binary system. © ESO, 2015.We thank the referee José A. Caballero for careful reading of our paper and useful suggestions that improved the work. We thank the directors and staffs of CASLEO, LCO, and ESO/La Silla for the use of their facilities and their kind hospitality during the observing runs. CASLEO is operated under agreement between CONICET and the Universities of La Plata, Córdoba and San Juan, Argentina. The Échelle Liège Spectrograph was jointly built by REOSC and Liège Observatory and is on long-term loan from the latter. This research has made use of NASA’s Astrophysics Data System, the SIMBAD database operated at CDS, Strasbourg, France, and the Aladin interactive sky atlas developed at CDS.Peer reviewedEDP SciencesConsejo Nacional de Investigaciones Científicas y Técnicas (Argentina)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2025202520152025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/387066reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1051/0004-6361/201425558Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3870662026-05-22T06:33:51Z
dc.title.none.fl_str_mv Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
title Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
spellingShingle Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
Gamen, R.
Binaries: spectroscopic
Stars: early-type
Stars: individual: HD 161853
title_short Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
title_full Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
title_fullStr Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
title_full_unstemmed Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
title_sort Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
dc.creator.none.fl_str_mv Gamen, R.
Putkuri, C.
Morrell, N. I.
Barbá, R. H.
Arias, J. I.
Maíz Apellániz, Jesús
Walborn, N. R.
Sota Ballano, Alfredo
Alfaro, Emilio J.
author Gamen, R.
author_facet Gamen, R.
Putkuri, C.
Morrell, N. I.
Barbá, R. H.
Arias, J. I.
Maíz Apellániz, Jesús
Walborn, N. R.
Sota Ballano, Alfredo
Alfaro, Emilio J.
author_role author
author2 Putkuri, C.
Morrell, N. I.
Barbá, R. H.
Arias, J. I.
Maíz Apellániz, Jesús
Walborn, N. R.
Sota Ballano, Alfredo
Alfaro, Emilio J.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Binaries: spectroscopic
Stars: early-type
Stars: individual: HD 161853
topic Binaries: spectroscopic
Stars: early-type
Stars: individual: HD 161853
description Aims. We study the O-type star HD 161853, which has been noted as a probable double-lined spectroscopic binary system. Methods. We secured high-resolution spectra of HD 161853 during the past nine years. We separated the two components in the system and measured their respective radial velocities for the first time. Results. We confirm that HD 161853 is an ~1 Ma old binary system consisting of an O8 V star (M ≥ 22 M) and a B1-3 V star (M ≥ 7.2 M) at about 1.3 kpc. From the radial velocity curve, we measure an orbital period P = 2.66765 ± 0.00001 d and an eccentricity e = 0.121 ± 0.007. Its V-band light curve is constant within 0.014 mag and does not display eclipses, from which we impose a maximum orbital inclination i = 54 deg. HD 161853 is probably associated with an H ii region and a poorly investigated very young open cluster. In addition, we detect a compact emission region at 50 arcsec to HD 161853 in 22 μm-WISE and 24 μm-Spitzer images, which may be identified as a dust wave piled up by the radiation pressure of the massive binary system. © ESO, 2015.
publishDate 2015
dc.date.none.fl_str_mv 2015
2025
2025
2025
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/10261/387066
url http://hdl.handle.net/10261/387066
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1051/0004-6361/201425558
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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
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