Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Grellmann, Rebekka [VerfasserIn]   i
 Ratzka, Th. [VerfasserIn]   i
 Köhler, Rainer [VerfasserIn]   i
 Preibisch, Th. [VerfasserIn]   i
 Mucciarelli, P. [VerfasserIn]   i
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

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68658868   QR-Code
zum Seitenanfang