Status: Bibliographieeintrag
Standort: ---
Exemplare:
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| Online-Ressource |
Verfasst von: | Grellmann, Rebekka [VerfasserIn]  |
| Ratzka, Th. [VerfasserIn]  |
| Köhler, Rainer [VerfasserIn]  |
| Preibisch, Th. [VerfasserIn]  |
| Mucciarelli, P. [VerfasserIn]  |
Titel: | New constraints on the multiplicity of massive young stars in Upper Scorpius |
Verf.angabe: | R. Grellmann, Th. Ratzka, R. Köhler, Th. Preibisch, and P. Mucciarelli |
E-Jahr: | 2015 |
Jahr: | 10 June 2015 |
Umfang: | 11 S. |
Fussnoten: | Gesehen am 09.11.2020 |
Titel Quelle: | Enthalten in: Astronomy and astrophysics |
Ort Quelle: | Les Ulis : EDP Sciences, 1969 |
Jahr Quelle: | 2015 |
Band/Heft Quelle: | 578(2015) Artikel Nummer: A84, 11 Seiten |
ISSN Quelle: | 1432-0746 |
Abstract: | Context: Observations and simulations have clearly established that most stars form in multiple systems. Characterizing their properties is thus important for our understanding of the star formation process. Aims: To provide statistics about the number of companions per star over the full range of angular distances, infrared long-baseline interferometric studies can be employed to fill the gap between spectroscopic and adaptive optics searches. The Upper Scorpius OB association is a good target for such observations, because its stellar content is very well known from both spectroscopic and adaptive optics searches. Methods: We used the ESO Very Large Telescope Interferometer to perform long-baseline interferometric observations of a sample of seven B stars. Furthermore, we used ROSAT X-ray data to search for indications of low-mass companions. Results: With the interferometric observations, we find previously known companions around <i>σ<i/> Sco and HR 6027. For the other targets we determine the parameter space in which the presence of companions can be excluded from our data. For two of the B stars in our sample, <i>π<i/> Sco and HR 6026, the detection of X-ray emission provides indirect evidence of previously unknown low-mass companions. Conclusions: In total we find two previously unknown companions. We can exclude the presence of other unknown companions within the separation range of ~2 to ~100 mas and for a brightness ratio ≥0.1. |
DOI: | doi:10.1051/0004-6361/201219577 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1051/0004-6361/201219577 |
| Volltext: https://www.aanda.org/articles/aa/abs/2015/06/aa19577-12/aa19577-12.html |
| DOI: https://doi.org/10.1051/0004-6361/201219577 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1738242285 |
Verknüpfungen: | → Zeitschrift |
New constraints on the multiplicity of massive young stars in Upper Scorpius / Grellmann, Rebekka [VerfasserIn]; 10 June 2015 (Online-Ressource)
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