A close encounter of the massive kind
We have used (a) HST ACS imaging and STIS spectroscopy, (b) ground-basedPIONIER/VLT long-baseline interferometry, and (c) ground-basedspectroscopy from different instruments to study the orbit of theextreme multiple system HD 93 129 Aa,Ab, which is composed of (at least)two very massive stars in a l...
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| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/93520 https://academic.oup.com/mnras/article/464/3/3561/2514582 |
| Aporte de: |
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I19-R120-10915-93520 |
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dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Ephemerides Binaries: Visual Stars: Individual: Hd 93 129 Aa,Ab Stars: Kinematics And Dynamics Stars: Winds, Outflows X-Rays: Stars. |
| spellingShingle |
Ciencias Astronómicas Ephemerides Binaries: Visual Stars: Individual: Hd 93 129 Aa,Ab Stars: Kinematics And Dynamics Stars: Winds, Outflows X-Rays: Stars. Maíz Apellániz, Jesús Sana, H. Barba, Rodolfo Hector Le Bouquin, J.B. Gamen, Roberto Claudio A close encounter of the massive kind |
| topic_facet |
Ciencias Astronómicas Ephemerides Binaries: Visual Stars: Individual: Hd 93 129 Aa,Ab Stars: Kinematics And Dynamics Stars: Winds, Outflows X-Rays: Stars. |
| description |
We have used (a) HST ACS imaging and STIS spectroscopy, (b) ground-basedPIONIER/VLT long-baseline interferometry, and (c) ground-basedspectroscopy from different instruments to study the orbit of theextreme multiple system HD 93 129 Aa,Ab, which is composed of (at least)two very massive stars in a long-period orbit with e>0.92 that willpass through periastron in 2017/2018. In several ways, the system is aneta Car precursor. Around the time of periastron passage the two verystrong winds will collide and generate an outburst of non-thermal hardX-ray emission without precedent in an O+O binary since astronomers havebeen able to observe above Earth's atmosphere. A coordinatedmultiwavelength monitoring in the next two years will enable abreakthrough understanding of the wind interactions in such extremeclose encounters. Furthermore, we have found evidence that HD 93 129 Aamay be a binary system itself. In that case, we could witness athree-body interaction that may yield a runaway star or a stellarcollision close to or shortly after the periastron passage. Either ofthose outcomes would be unprecedented, as they are predicted to below-frequency events in the Milky Way. |
| format |
Articulo Articulo |
| author |
Maíz Apellániz, Jesús Sana, H. Barba, Rodolfo Hector Le Bouquin, J.B. Gamen, Roberto Claudio |
| author_facet |
Maíz Apellániz, Jesús Sana, H. Barba, Rodolfo Hector Le Bouquin, J.B. Gamen, Roberto Claudio |
| author_sort |
Maíz Apellániz, Jesús |
| title |
A close encounter of the massive kind |
| title_short |
A close encounter of the massive kind |
| title_full |
A close encounter of the massive kind |
| title_fullStr |
A close encounter of the massive kind |
| title_full_unstemmed |
A close encounter of the massive kind |
| title_sort |
close encounter of the massive kind |
| publishDate |
2017 |
| url |
http://sedici.unlp.edu.ar/handle/10915/93520 https://academic.oup.com/mnras/article/464/3/3561/2514582 |
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