Discovery of a Substellar Companion to the Nearby Debris Disk Host HR 2562

Konopacky, Quinn M.; Rameau, Julien; Duchêne, Gaspard; Filippazzo, Joseph C.; Giorla Godfrey, Paige A.; Marois, Christian; Nielsen, Eric L.; Pueyo, Laurent; Rafikov, Roman R.; Rice, Emily L.; Wang, Jason J.; Ammons, S. Mark; Bailey, Vanessa P.; Barman, Travis S.; Bulger, Joanna; Bruzzone, Sebastian; Chilcote, Jeffrey K.; Cotten, Tara; Dawson, Rebekah I.; De Rosa, Robert J.; Doyon, René; Esposito, Thomas M.; Fitzgerald, Michael P.; Follette, Katherine B.; Goodsell, Stephen; Graham, James R.; Greenbaum, Alexandra Z.; Hibon, Pascale; Hung, Li-Wei; Ingraham, Patrick; Kalas, Paul; Lafrenière, David; Larkin, James E.; Macintosh, Bruce A.; Maire, Jérôme; Marchis, Franck; Marley, Mark S.; Matthews, Brenda C.; Metchev, Stanimir; Millar-Blanchaer, Maxwell A.; Oppenheimer, Rebecca; Palmer, David W.; Patience, Jenny; Perrin, Marshall D.; Poyneer, Lisa A.; Rajan, Abhijith; Rantakyrö, Fredrik T.; Savransky, Dmitry; Schneider, Adam C.; Sivaramakrishnan, Anand; Song, Inseok; Soummer, Remi; Thomas, Sandrine; Wallace, J. Kent; Ward-Duong, Kimberly; Wiktorowicz, Sloane J.; Wolff, Schuyler G.

doi:10.3847/2041-8205/829/1/l4

Discovery of a Substellar Companion to the Nearby Debris Disk Host HR 2562

Konopacky, Quinn M.; Rameau, Julien; Duchêne, Gaspard; Filippazzo, Joseph C.; Giorla Godfrey, Paige A.; Marois, Christian; Nielsen, Eric L.; Pueyo, Laurent; Rafikov, Roman R.; Rice, Emily L.; Wang, Jason J.; Ammons, S. Mark; Bailey, Vanessa P.; Barman, Travis S.; Bulger, Joanna; Bruzzone, Sebastian; Chilcote, Jeffrey K.; Cotten, Tara; Dawson, Rebekah I.; De Rosa, Robert J.; Doyon, René; Esposito, Thomas M.; Fitzgerald, Michael P.; Follette, Katherine B.; Goodsell, Stephen; Graham, James R.; Greenbaum, Alexandra Z.; Hibon, Pascale; Hung, Li-Wei; Ingraham, Patrick; Kalas, Paul; Lafrenière, David; Larkin, James E.; Macintosh, Bruce A.; Maire, Jérôme; Marchis, Franck; Marley, Mark S.; Matthews, Brenda C.; Metchev, Stanimir; Millar-Blanchaer, Maxwell A.; Oppenheimer, Rebecca; Palmer, David W.; Patience, Jenny; Perrin, Marshall D.; Poyneer, Lisa A.; Rajan, Abhijith; Rantakyrö, Fredrik T.; Savransky, Dmitry; Schneider, Adam C.; Sivaramakrishnan, Anand; Song, Inseok; Soummer, Remi; Thomas, San...

Authors

Quinn M. Konopacky

Julien Rameau

Gaspard Duchêne

Joseph C. Filippazzo

Paige A. Giorla Godfrey

Christian Marois

Eric L. Nielsen

Laurent Pueyo

Roman R. Rafikov

Emily L. Rice

Jason J. Wang

S. Mark Ammons

Vanessa P. Bailey

Travis S. Barman

Joanna Bulger

Sebastian Bruzzone

Jeffrey K. Chilcote

Tara Cotten

Rebekah I. Dawson

Robert J. De Rosa

René Doyon

Thomas M. Esposito

Michael P. Fitzgerald

Katherine B. Follette

Dr Stephen Goodsell stephen.goodsell@durham.ac.uk
Programme Manager

James R. Graham

Alexandra Z. Greenbaum

Pascale Hibon

Li-Wei Hung

Patrick Ingraham

Paul Kalas

David Lafrenière

James E. Larkin

Bruce A. Macintosh

Jérôme Maire

Franck Marchis

Mark S. Marley

Brenda C. Matthews

Stanimir Metchev

Maxwell A. Millar-Blanchaer

Rebecca Oppenheimer

David W. Palmer

Jenny Patience

Marshall D. Perrin

Lisa A. Poyneer

Abhijith Rajan

Fredrik T. Rantakyrö

Dmitry Savransky

Adam C. Schneider

Anand Sivaramakrishnan

Inseok Song

Remi Soummer

Sandrine Thomas

J. Kent Wallace

Kimberly Ward-Duong

Sloane J. Wiktorowicz

Schuyler G. Wolff

Abstract

We present the discovery of a brown dwarf companion to the debris disk host star HR 2562. This object, discovered with the Gemini Planet Imager (GPI), has a projected separation of 20.3±0.3 au (0.618±0.004") from the star. With the high astrometric precision afforded by GPI, we have confirmed common proper motion of HR 2562B with the star with only a month time baseline between observations to more than 5σ. Spectral data in J, H, and K bands show morphological similarity to L/T transition objects. We assign a spectral type of L7±3 to HR 2562B, and derive a luminosity of log(Lbol/L⊙)=-4.62±0.12, corresponding to a mass of 30±15 MJup from evolutionary models at an estimated age of the system of 300-900 Myr. Although the uncertainty in the age of the host star is significant, the spectra and photometry exhibit several indications of youth for HR 2562B. The source has a position angle consistent with an orbit in the same plane as the debris disk recently resolved with Herschel. Additionally, it appears to be interior to the debris disk. Though the extent of the inner hole is currently too uncertain to place limits on the mass of HR 2562B, future observations of the disk with higher spatial resolution may be able to provide mass constraints. This is the first brown dwarf-mass object found to reside in the inner hole of a debris disk, offering the opportunity to search for evidence of formation above the deuterium burning limit in a circumstellar disk.

Citation

Konopacky, Q. M., Rameau, J., Duchêne, G., Filippazzo, J. C., Giorla Godfrey, P. A., Marois, C., …Wolff, S. G. (2016). Discovery of a Substellar Companion to the Nearby Debris Disk Host HR 2562. Astrophysical Journal Letters, 829(1), Article L4. https://doi.org/10.3847/2041-8205/829/1/l4

Journal Article Type	Article
Acceptance Date	Aug 22, 2016
Online Publication Date	Sep 14, 2016
Publication Date	Sep 14, 2016
Deposit Date	Dec 6, 2016
Publicly Available Date	Jan 26, 2017
Journal	Astrophysical Journal Letters
Print ISSN	2041-8205
Electronic ISSN	2041-8213
Publisher	American Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	829
Issue	1
Article Number	L4
DOI	https://doi.org/10.3847/2041-8205/829/1/l4