The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry
- Autores
- Putkuri, Cristina Ester; Gamen, Roberto Claudio; Morrell, Nidia Irene; Maı́z Apellániz, J.; Arias, Julia Inés; Simón-Dı́az, S.; Ferrero Sosa, Gabriel Antonio; Rodríguez, Cinthya Nazarena; Sota, A.; Benvenuto, Omar Gustavo; Barbá, Rodolfo Héctor
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present the first spectroscopic orbit of the O-type double-lined star HD 168112 A,B. We analyse 101 high-resolution optical spectra identifying the absorption lines of both components. The orbital solution presents a relatively long period, P = 513.52 ± 0.01 d, and a high eccentricity, e = 0.743 ± 0.005. The binary system consists of two very similar stars of minimum masses of ∼25 M☉, effective temperatures of ∼40 000 K, and surface gravities of ∼3.7 dex. The system has a minimum semimajor axis a sin i ∼ 1000 R☉. We confirm that the A and B visual components identified via interferometry do correspond to the spectroscopic ones. We also analyse the underlying stellar groups using Gaia DR3 data and ground-based spectroscopy as part 38 of the Villafranca project, determining that NGC 6604 is at a distance of 1942+ 38 −36 pc and giving spectral classifications for 23 massive stellar systems in Villafranca O-035 and the surrounding Ser OB2 association, for which we provide the most complete census of massive stars to date.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata - Materia
-
Ciencias Astronómicas
binaries: spectroscopic
stars: early-type
stars: individual: HD 168112 - 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:10915/191805
Ver los metadatos del registro completo
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The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometryPutkuri, Cristina EsterGamen, Roberto ClaudioMorrell, Nidia IreneMaı́z Apellániz, J.Arias, Julia InésSimón-Dı́az, S.Ferrero Sosa, Gabriel AntonioRodríguez, Cinthya NazarenaSota, A.Benvenuto, Omar GustavoBarbá, Rodolfo HéctorCiencias Astronómicasbinaries: spectroscopicstars: early-typestars: individual: HD 168112We present the first spectroscopic orbit of the O-type double-lined star HD 168112 A,B. We analyse 101 high-resolution optical spectra identifying the absorption lines of both components. The orbital solution presents a relatively long period, P = 513.52 ± 0.01 d, and a high eccentricity, e = 0.743 ± 0.005. The binary system consists of two very similar stars of minimum masses of ∼25 M☉, effective temperatures of ∼40 000 K, and surface gravities of ∼3.7 dex. The system has a minimum semimajor axis a sin i ∼ 1000 R☉. We confirm that the A and B visual components identified via interferometry do correspond to the spectroscopic ones. We also analyse the underlying stellar groups using Gaia DR3 data and ground-based spectroscopy as part 38 of the Villafranca project, determining that NGC 6604 is at a distance of 1942+ 38 −36 pc and giving spectral classifications for 23 massive stellar systems in Villafranca O-035 and the surrounding Ser OB2 association, for which we provide the most complete census of massive stars to date.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2023-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf6084–6096http://sedici.unlp.edu.ar/handle/10915/191805enginfo:eu-repo/semantics/altIdentifier/issn/1365-2966info: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:UNLP2026-05-13T12:59:23Zoai:sedici.unlp.edu.ar:10915/191805Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-05-13 12:59:23.748SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry |
| title |
The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry |
| spellingShingle |
The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry Putkuri, Cristina Ester Ciencias Astronómicas binaries: spectroscopic stars: early-type stars: individual: HD 168112 |
| title_short |
The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry |
| title_full |
The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry |
| title_fullStr |
The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry |
| title_full_unstemmed |
The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry |
| title_sort |
The spectroscopic orbit of HD 168112 A,B in NGC 6604: another massive binary target for interferometry |
| dc.creator.none.fl_str_mv |
Putkuri, Cristina Ester Gamen, Roberto Claudio Morrell, Nidia Irene Maı́z Apellániz, J. Arias, Julia Inés Simón-Dı́az, S. Ferrero Sosa, Gabriel Antonio Rodríguez, Cinthya Nazarena Sota, A. Benvenuto, Omar Gustavo Barbá, Rodolfo Héctor |
| author |
Putkuri, Cristina Ester |
| author_facet |
Putkuri, Cristina Ester Gamen, Roberto Claudio Morrell, Nidia Irene Maı́z Apellániz, J. Arias, Julia Inés Simón-Dı́az, S. Ferrero Sosa, Gabriel Antonio Rodríguez, Cinthya Nazarena Sota, A. Benvenuto, Omar Gustavo Barbá, Rodolfo Héctor |
| author_role |
author |
| author2 |
Gamen, Roberto Claudio Morrell, Nidia Irene Maı́z Apellániz, J. Arias, Julia Inés Simón-Dı́az, S. Ferrero Sosa, Gabriel Antonio Rodríguez, Cinthya Nazarena Sota, A. Benvenuto, Omar Gustavo Barbá, Rodolfo Héctor |
| author2_role |
author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas binaries: spectroscopic stars: early-type stars: individual: HD 168112 |
| topic |
Ciencias Astronómicas binaries: spectroscopic stars: early-type stars: individual: HD 168112 |
| dc.description.none.fl_txt_mv |
We present the first spectroscopic orbit of the O-type double-lined star HD 168112 A,B. We analyse 101 high-resolution optical spectra identifying the absorption lines of both components. The orbital solution presents a relatively long period, P = 513.52 ± 0.01 d, and a high eccentricity, e = 0.743 ± 0.005. The binary system consists of two very similar stars of minimum masses of ∼25 M☉, effective temperatures of ∼40 000 K, and surface gravities of ∼3.7 dex. The system has a minimum semimajor axis a sin i ∼ 1000 R☉. We confirm that the A and B visual components identified via interferometry do correspond to the spectroscopic ones. We also analyse the underlying stellar groups using Gaia DR3 data and ground-based spectroscopy as part 38 of the Villafranca project, determining that NGC 6604 is at a distance of 1942+ 38 −36 pc and giving spectral classifications for 23 massive stellar systems in Villafranca O-035 and the surrounding Ser OB2 association, for which we provide the most complete census of massive stars to date. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Astrofísica de La Plata |
| description |
We present the first spectroscopic orbit of the O-type double-lined star HD 168112 A,B. We analyse 101 high-resolution optical spectra identifying the absorption lines of both components. The orbital solution presents a relatively long period, P = 513.52 ± 0.01 d, and a high eccentricity, e = 0.743 ± 0.005. The binary system consists of two very similar stars of minimum masses of ∼25 M☉, effective temperatures of ∼40 000 K, and surface gravities of ∼3.7 dex. The system has a minimum semimajor axis a sin i ∼ 1000 R☉. We confirm that the A and B visual components identified via interferometry do correspond to the spectroscopic ones. We also analyse the underlying stellar groups using Gaia DR3 data and ground-based spectroscopy as part 38 of the Villafranca project, determining that NGC 6604 is at a distance of 1942+ 38 −36 pc and giving spectral classifications for 23 massive stellar systems in Villafranca O-035 and the surrounding Ser OB2 association, for which we provide the most complete census of massive stars to date. |
| publishDate |
2023 |
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2023-09 |
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eng |
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eng |
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