High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints
We present a direct imaging study of V892 Tau, a young Herbig Ae/Be star with a close-in stellar companion and circumbinary disk. Our observations consist of images acquired via Keck II/NIRC2 with nonredundant masking and the pyramid wavefront sensor at $K^{\prime} $ band (2.12 μ m) and $L^{\prime}...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/acfda6 |
| _version_ | 1797608259139403776 |
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| author | Christina L. Vides Steph Sallum Josh Eisner Andy Skemer Ruth Murray-Clay |
| author_facet | Christina L. Vides Steph Sallum Josh Eisner Andy Skemer Ruth Murray-Clay |
| author_sort | Christina L. Vides |
| collection | DOAJ |
| description | We present a direct imaging study of V892 Tau, a young Herbig Ae/Be star with a close-in stellar companion and circumbinary disk. Our observations consist of images acquired via Keck II/NIRC2 with nonredundant masking and the pyramid wavefront sensor at $K^{\prime} $ band (2.12 μ m) and $L^{\prime} $ band (3.78 μ m). Sensitivity to low-mass accreting companions and cool disk material is high at $L^{\prime} $ band, while complimentary observations at $K^{\prime} $ band probe hotter material with higher angular resolution. These multiwavelength, multiepoch data allow us to differentiate the secondary stellar emission from disk emission and deeply probe the structure of the circumbinary disk at small angular separations. We constrain architectural properties of the system by fitting geometric disk and companion models to the $K^{\prime} $ - and $L^{\prime} $ -band data. From these models, we constrain the astrometric and photometric properties of the stellar binary and update the orbit, placing the tightest estimates to date on the V892 Tau orbital parameters. We also constrain the geometric structure of the circumbinary disk, and resolve a circumprimary disk for the first time. |
| first_indexed | 2024-03-11T05:42:03Z |
| format | Article |
| id | doaj.art-948c03087e5b47b1b8d0d63207a6933c |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-11T05:42:03Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-948c03087e5b47b1b8d0d63207a6933c2023-11-17T16:23:04ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-01958212310.3847/1538-4357/acfda6High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital ConstraintsChristina L. Vides0https://orcid.org/0000-0002-6978-0653Steph Sallum1https://orcid.org/0000-0001-6871-6775Josh Eisner2https://orcid.org/0000-0002-1031-4199Andy Skemer3https://orcid.org/0000-0001-6098-3924Ruth Murray-Clay4Department of Physics and Astronomy, University Of California , Irvine, USADepartment of Physics and Astronomy, University Of California , Irvine, USADepartment of Astronomy and Steward Observatory, University of Arizona , USAAstronomy & Astrophysics Department, University of California , Santa Cruz, USAAstronomy & Astrophysics Department, University of California , Santa Cruz, USAWe present a direct imaging study of V892 Tau, a young Herbig Ae/Be star with a close-in stellar companion and circumbinary disk. Our observations consist of images acquired via Keck II/NIRC2 with nonredundant masking and the pyramid wavefront sensor at $K^{\prime} $ band (2.12 μ m) and $L^{\prime} $ band (3.78 μ m). Sensitivity to low-mass accreting companions and cool disk material is high at $L^{\prime} $ band, while complimentary observations at $K^{\prime} $ band probe hotter material with higher angular resolution. These multiwavelength, multiepoch data allow us to differentiate the secondary stellar emission from disk emission and deeply probe the structure of the circumbinary disk at small angular separations. We constrain architectural properties of the system by fitting geometric disk and companion models to the $K^{\prime} $ - and $L^{\prime} $ -band data. From these models, we constrain the astrometric and photometric properties of the stellar binary and update the orbit, placing the tightest estimates to date on the V892 Tau orbital parameters. We also constrain the geometric structure of the circumbinary disk, and resolve a circumprimary disk for the first time.https://doi.org/10.3847/1538-4357/acfda6Protoplanetary disksInterferometryNear infrared astronomy |
| spellingShingle | Christina L. Vides Steph Sallum Josh Eisner Andy Skemer Ruth Murray-Clay High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints The Astrophysical Journal Protoplanetary disks Interferometry Near infrared astronomy |
| title | High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints |
| title_full | High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints |
| title_fullStr | High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints |
| title_full_unstemmed | High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints |
| title_short | High-angular-resolution Imaging of the V892 Tau Binary System: A New Circumprimary Disk Detection and Updated Orbital Constraints |
| title_sort | high angular resolution imaging of the v892 tau binary system a new circumprimary disk detection and updated orbital constraints |
| topic | Protoplanetary disks Interferometry Near infrared astronomy |
| url | https://doi.org/10.3847/1538-4357/acfda6 |
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