TY - JOUR
T1 - Testing the Interaction between a Substellar Companion and a Debris Disk in the HR 2562 System
AU - Zhang, Stella Yimiao
AU - Duchêne, Gaspard
AU - De Rosa, Robert J.
AU - Ansdell, Megan
AU - Konopacky, Quinn
AU - Esposito, Thomas
AU - Chiang, Eugene
AU - Rice, Malena
AU - Matthews, Brenda
AU - Kalas, Paul
AU - Macintosh, Bruce
AU - Marchis, Franck
AU - Metchev, Stan
AU - Patience, Jenny
AU - Rameau, Julien
AU - Ward-Duong, Kimberly
AU - Wolff, Schuyler
AU - Fitzgerald, Michael P.
AU - Bailey, Vanessa P.
AU - Barman, Travis S.
AU - Bulger, Joanna
AU - Chen, Christine H.
AU - Chilcotte, Jeffrey K.
AU - Cotten, Tara
AU - Doyon, René
AU - Follette, Katherine B.
AU - Gerard, Benjamin L.
AU - Goodsell, Stephen
AU - Graham, James R.
AU - Greenbaum, Alexandra Z.
AU - Hibon, Pascale
AU - Hung, Li Wei
AU - Ingraham, Patrick
AU - Maire, Jérôme
AU - Marley, Mark S.
AU - Marois, Christian
AU - Millar-Blanchaer, Maxwell A.
AU - Nielsen, Eric L.
AU - Oppenheimer, Rebecca
AU - Palmer, David W.
AU - Perrin, Marshall D.
AU - Poyneer, Lisa A.
AU - Pueyo, Laurent
AU - Rajan, Abhijith
AU - Rantakyrö, Fredrik T.
AU - Ruffio, Jean Baptiste
AU - Savransky, Dmitry
AU - Schneider, Adam C.
AU - Sivaramakrishnan, Anand
AU - Song, Inseok
AU - Soummer, Remi
AU - Thomas, Sandrine
AU - Wang, Jason J.
AU - Wiktorowicz, Sloane J.
N1 - Funding Information:
This work is based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA), under a cooperative agreement with the National Science Foundation (NSF) on behalf of the Gemini partnership: the NSF (United States), the National Research Council (Canada), CONICYT (Chile), Ministerio de Ciencia, Tecnología e Innovación Productiva (Argentina), and Ministério da Ciência, Tecnologia e Inovação (Brazil). This work made use of data from the European Space Agency mission Gaia ( https://www.cosmos.esa.int/gaia ), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium ). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This research made use of the SIMBAD and VizieR databases, operated at CDS, Strasbourg, France. We are thankful for support from NSF AST-1518332, NASA NNX15AC89G, NNX15AD95G/NEXSS, and award SOSPA4-006 through the NSF from the NRAO.
Publisher Copyright:
© 2023. The Author(s). Published by the American Astronomical Society.
PY - 2023/5/1
Y1 - 2023/5/1
N2 - The HR 2562 system is a rare case where a brown dwarf companion resides in a cleared inner hole of a debris disk, offering invaluable opportunities to study the dynamical interaction between a substellar companion and a dusty disk. We present the first ALMA observation of the system as well as the continued Gemini Planet Imager monitoring of the companion's orbit with six new epochs from 2016 to 2018. We update the orbital fit, and in combination with absolute astrometry from GAIA, place a 3σ upper limit of 18.5 M J on the companion's mass. To interpret the ALMA observations, we used radiative transfer modeling to determine the disk properties. We find that the disk is well resolved and nearly edge-on. While the misalignment angle between the disk and the orbit is weakly constrained, due to the short orbital arc available, the data strongly support a (near) coplanar geometry for the system. Furthermore, we find that the models that describe the ALMA data best have inner radii that are close to the companion's semimajor axis. Including a posteriori knowledge of the system's SED further narrows the constraints on the disk's inner radius and places it at a location that is in reasonable agreement with (possibly interior to) predictions from existing dynamical models of disk truncation by an interior substellar companion. HR 2562 has the potential over the next few years to become a new test bed for dynamical interaction between a debris disk and a substellar companion.
AB - The HR 2562 system is a rare case where a brown dwarf companion resides in a cleared inner hole of a debris disk, offering invaluable opportunities to study the dynamical interaction between a substellar companion and a dusty disk. We present the first ALMA observation of the system as well as the continued Gemini Planet Imager monitoring of the companion's orbit with six new epochs from 2016 to 2018. We update the orbital fit, and in combination with absolute astrometry from GAIA, place a 3σ upper limit of 18.5 M J on the companion's mass. To interpret the ALMA observations, we used radiative transfer modeling to determine the disk properties. We find that the disk is well resolved and nearly edge-on. While the misalignment angle between the disk and the orbit is weakly constrained, due to the short orbital arc available, the data strongly support a (near) coplanar geometry for the system. Furthermore, we find that the models that describe the ALMA data best have inner radii that are close to the companion's semimajor axis. Including a posteriori knowledge of the system's SED further narrows the constraints on the disk's inner radius and places it at a location that is in reasonable agreement with (possibly interior to) predictions from existing dynamical models of disk truncation by an interior substellar companion. HR 2562 has the potential over the next few years to become a new test bed for dynamical interaction between a debris disk and a substellar companion.
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U2 - 10.3847/1538-3881/acbafb
DO - 10.3847/1538-3881/acbafb
M3 - Article
AN - SCOPUS:85159959931
SN - 0004-6256
VL - 165
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
M1 - 219
ER -