Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region
- Autores
- Gamen, Roberto Claudio; Putkuri, Cristina Ester; Morrell, Nidia Irene; Barbá, Rodolfo Héctor; Arias, Julia Inés; Maíz Apellániz, J.; Walborn, N. R.; Sota, A.; Alfaro, E. J.
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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 (MA,RV ≥ 22 M⊙) and a B1-3 V star (MB,RV ≥ 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.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata - Materia
-
Ciencias Astronómicas
Binaries: spectroscopic
Stars: early-type
Stars: individual: HD 161853 - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/86405
Ver los metadatos del registro completo
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Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II regionGamen, Roberto ClaudioPutkuri, Cristina EsterMorrell, Nidia IreneBarbá, Rodolfo HéctorArias, Julia InésMaíz Apellániz, J.Walborn, N. R.Sota, A.Alfaro, E. J.Ciencias AstronómicasBinaries: 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<SUB>A,RV</SUB> ≥ 22 M⊙) and a B1-3 V star (M<SUB>B,RV</SUB> ≥ 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-<i>Spitzer</i> images, which may be identified as a dust wave piled up by the radiation pressure of the massive binary system.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/86405enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201425558info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:57:42Zoai:sedici.unlp.edu.ar:10915/86405Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:57:42.372SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| 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, Roberto Claudio Ciencias Astronómicas 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, Roberto Claudio Putkuri, Cristina Ester Morrell, Nidia Irene Barbá, Rodolfo Héctor Arias, Julia Inés Maíz Apellániz, J. Walborn, N. R. Sota, A. Alfaro, E. J. |
| author |
Gamen, Roberto Claudio |
| author_facet |
Gamen, Roberto Claudio Putkuri, Cristina Ester Morrell, Nidia Irene Barbá, Rodolfo Héctor Arias, Julia Inés Maíz Apellániz, J. Walborn, N. R. Sota, A. Alfaro, E. J. |
| author_role |
author |
| author2 |
Putkuri, Cristina Ester Morrell, Nidia Irene Barbá, Rodolfo Héctor Arias, Julia Inés Maíz Apellániz, J. Walborn, N. R. Sota, A. Alfaro, E. J. |
| author2_role |
author author author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas Binaries: spectroscopic Stars: early-type Stars: individual: HD 161853 |
| topic |
Ciencias Astronómicas Binaries: spectroscopic Stars: early-type Stars: individual: HD 161853 |
| dc.description.none.fl_txt_mv |
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<SUB>A,RV</SUB> ≥ 22 M⊙) and a B1-3 V star (M<SUB>B,RV</SUB> ≥ 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-<i>Spitzer</i> images, which may be identified as a dust wave piled up by the radiation pressure of the massive binary system. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Astrofísica de La Plata |
| 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<SUB>A,RV</SUB> ≥ 22 M⊙) and a B1-3 V star (M<SUB>B,RV</SUB> ≥ 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-<i>Spitzer</i> images, which may be identified as a dust wave piled up by the radiation pressure of the massive binary system. |
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2015 |
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2015 |
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