دورية أكاديمية
ARMADA. II. Further Detections of Inner Companions to Intermediate-mass Binaries with Microarcsecond Astrometry at CHARA and VLTI
| العنوان: | ARMADA. II. Further Detections of Inner Companions to Intermediate-mass Binaries with Microarcsecond Astrometry at CHARA and VLTI |
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| المؤلفون: | Gardner, Tyler, Monnier, John D., Fekel, Francis C., Le Bouquin, Jean-Baptiste, Scovera, Adam, Schaefer, Gail, Kraus, Stefan, Adams, Fred C., Anugu, Narsireddy, Berger, Jean-Philippe, ten Brummelaar, Theo, Davies, Claire L., Ennis, Jacob, Gies, Douglas R., Johnson, Keith J. C., Kervella, Pierre, Kratter, Kaitlin M., Labdon, Aaron, Lanthermann, Cyprien, Sahlmann, Johannes, Setterholm, Benjamin R. |
| المساهمون: | Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) |
| المصدر: | ISSN: 0004-6256. |
| بيانات النشر: | HAL CCSD American Astronomical Society |
| سنة النشر: | 2022 |
| المجموعة: | Archive de l'Observatoire de Paris (HAL) |
| مصطلحات موضوعية: | Astrometric binary stars, Multiple stars, Astrometry, Long baseline interferometry, Trinary stars, Spectroscopic binary stars, Astrophysics - Solar and Stellar Astrophysics, [SDU]Sciences of the Universe [physics], [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] |
| الوصف: | International audience ; We started a survey with CHARA/MIRC-X and VLTI/GRAVITY to search for low-mass companions orbiting individual components of intermediate-mass binary systems. With the incredible precision of these instruments, we can detect astrometric "wobbles" from companions down to a few tens of microarcseconds. This allows us to detect any previously unseen triple systems in our list of binaries. We present the orbits of 12 companions around early F- to B-type binaries, 9 of which are new detections and 3 of which are first astrometric detections of known radial velocity (RV) companions. The masses of these newly detected components range from 0.45 to 1.3 M ⊙ . Our orbits constrain these systems to a high astrometric precision, with median residuals to the orbital fit of 20-50 μas in most cases. For seven of these systems we include newly obtained RV data, which help us to identify the system configuration and to solve for masses of individual components in some cases. Although additional RV measurements are needed to break degeneracy in the mutual inclination, we find that the majority of these inner triples are not well aligned with the wide binary orbit. This hints that higher-mass triples are more misaligned compared to solar and lower-mass triples, though a thorough study of survey biases is needed. We show that the ARMADA survey is extremely successful at uncovering previously unseen companions in binaries. This method will be used in upcoming papers to constrain companion demographics in intermediate-mass binary systems down to the planetary-mass regime. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/arxiv/2209.00669; insu-03860262; https://insu.hal.science/insu-03860262Test; https://insu.hal.science/insu-03860262/documentTest; https://insu.hal.science/insu-03860262/file/Gardner_2022_AJ_164_184.pdfTest; ARXIV: 2209.00669; BIBCODE: 2022AJ.164.184G |
| DOI: | 10.3847/1538-3881/ac8eae |
| الإتاحة: | https://doi.org/10.3847/1538-3881/ac8eaeTest https://insu.hal.science/insu-03860262Test https://insu.hal.science/insu-03860262/documentTest https://insu.hal.science/insu-03860262/file/Gardner_2022_AJ_164_184.pdfTest |
| حقوق: | http://creativecommons.org/licenses/byTest/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.C7A82B66 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3847/1538-3881/ac8eae |
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