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https://doi.org/10.3847/1538-3881/ab8bcc

A Dynamical Mass of 70 ± 5 M Jup for Gliese 229B, the First T Dwarf

Timothy D. Brandt, Trent J. Dupuy, Brendan P. Bowler, Daniella C. Bardalez Gagliuffi, Jacqueline Faherty, G. Mirek Brandt and Daniel Michalik
The Astronomical Journal 160 (4) 196 (2020)
https://doi.org/10.3847/1538-3881/abb45e

CARMENES input catalogue of M dwarfs

C. Cifuentes, J. A. Caballero, M. Cortés-Contreras, D. Montes, F. J. Abellán, R. Dorda, G. Holgado, M. R. Zapatero Osorio, J. C. Morales, P. J. Amado, V. M. Passegger, A. Quirrenbach, A. Reiners, I. Ribas, J. Sanz-Forcada, A. Schweitzer, W. Seifert and E. Solano
Astronomy & Astrophysics 642 A115 (2020)
https://doi.org/10.1051/0004-6361/202038295

Spectroscopic Orbits of 11 Nearby, Mid-to-late M-dwarf Binaries

Jennifer G. Winters, Jonathan M. Irwin, David Charbonneau, David W. Latham, Amber M. Medina, Jessica Mink, Gilbert A. Esquerdo, Perry Berlind, Michael L. Calkins and Zachory K. Berta-Thompson
The Astronomical Journal 159 (6) 290 (2020)
https://doi.org/10.3847/1538-3881/ab8d31

The kinematical and space structures of IC 2391 open cluster and moving group with Gaia-DR2

E. S. Postnikova, W. H. Elsanhoury, Devesh P. Sariya, N. V. Chupina, S. V. Vereshchagin and Ing-Guey Jiang
Research in Astronomy and Astrophysics 20 (2) 016 (2020)
https://doi.org/10.1088/1674-4527/20/2/16

The HOSTS Survey for Exozodiacal Dust: Observational Results from the Complete Survey

S. Ertel, D. Defrère, P. Hinz, B. Mennesson, G. M. Kennedy, W. C. Danchi, C. Gelino, J. M. Hill, W. F. Hoffmann, J. Mazoyer, G. Rieke, A. Shannon, K. Stapelfeldt, E. Spalding, J. M. Stone, A. Vaz, A. J. Weinberger, P. Willems, O. Absil, P. Arbo, V. P. Bailey, C. Beichman, G. Bryden, E. C. Downey, O. Durney, et al.
The Astronomical Journal 159 (4) 177 (2020)
https://doi.org/10.3847/1538-3881/ab7817

Observations of Binary Stars with the Differential Speckle Survey Instrument. IX. Observations of Known and Suspected Binaries, and a Partial Survey of Be Stars

Elliott P. Horch, Gerard T. van Belle, James W. Davidson, Daryl Willmarth, Francis C. Fekel, Matthew Muterspaugh, Dana I. Casetti-Dinescu, Frederick W. Hahne, Nicole M. Granucci, Catherine Clark, Jennifer G. Winters, Justin D. Rupert, Samuel A. Weiss, Nicole M. Colton, Daniel A. Nusdeo and Todd J. Henry
The Astronomical Journal 159 (5) 233 (2020)
https://doi.org/10.3847/1538-3881/ab87a6

Speckle Interferometry of Nearby Multiple Stars: 2007–2019 Positional Measurements and Orbits of Eight Objects

A. Mitrofanova, V. Dyachenko, A. Beskakotov, Yu. Balega, A. Maksimov, D. Rastegaev and S. Komarinsky
The Astronomical Journal 159 (6) 266 (2020)
https://doi.org/10.3847/1538-3881/ab8ae2

TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet*

Johanna Teske, Matías R. Díaz, Rafael Luque, Teo Močnik, Julia V. Seidel, Jon Fernández Otegi, Fabo Feng, James S. Jenkins, Enric Pallè, Damien Ségransan, Stèphane Udry, Karen A. Collins, Jason D. Eastman, George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, David. R. Anderson, Thomas Barclay, François Bouchy, Jennifer A. Burt, R. Paul Butler, Douglas A. Caldwell, et al.
The Astronomical Journal 160 (2) 96 (2020)
https://doi.org/10.3847/1538-3881/ab9f95

The Solar Neighborhood. XLVI. Revealing New M Dwarf Binaries and Their Orbital Architectures

Eliot Halley Vrijmoet, Todd J. Henry, Wei-Chun Jao and Serge B. Dieterich
The Astronomical Journal 160 (5) 215 (2020)
https://doi.org/10.3847/1538-3881/abb4e9

The Gemini Planet Imager Exoplanet Survey: Dynamical Mass of the Exoplanet β Pictoris b from Combined Direct Imaging and Astrometry

Eric L. Nielsen, Robert J. De Rosa, Jason J. Wang, Johannes Sahlmann, Paul Kalas, Gaspard Duchêne, Julien Rameau, Mark S. Marley, Didier Saumon, Bruce Macintosh, Maxwell A. Millar-Blanchaer, Meiji M. Nguyen, S. Mark Ammons, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, et al.
The Astronomical Journal 159 (2) 71 (2020)
https://doi.org/10.3847/1538-3881/ab5b92

The extended molecular envelope of the asymptotic giant branch star π1 Gruis as seen by ALMA

L. Doan, S. Ramstedt, W. H. T. Vlemmings, S. Mohamed, S. Höfner, E. De Beck, F. Kerschbaum, M. Lindqvist, M. Maercker, C. Paladini and M. Wittkowski
Astronomy & Astrophysics 633 A13 (2020)
https://doi.org/10.1051/0004-6361/201935245

A new study of the spectroscopic binary 7 Vul with a Be star primary

P. Harmanec, J. Lipták, P. Koubský, H. Božić, J. Labadie-Bartz, M. Šlechta, S. Yang and A. Harmanec
Astronomy & Astrophysics 639 A32 (2020)
https://doi.org/10.1051/0004-6361/202037964

On the correctness of orbital solutions obtained from a small set of points. Orbit of HIP 53731

Arina Mitrofanova, Vladimir Dyachenko, Anatoly Beskakotov, Yury Balega, Alexander Maksimov, Denis Rastegaev and Sergey Komarinsky
Research in Astronomy and Astrophysics 20 (11) 187 (2020)
https://doi.org/10.1088/1674-4527/20/11/187

K-Stacker: an algorithm to hack the orbital parameters of planets hidden in high-contrast imaging

H. Le Coroller, M. Nowak, P. Delorme, G. Chauvin, R. Gratton, M. Devinat, J. Bec-Canet, A. Schneeberger, D. Estevez, L. Arnold, H. Beust, M. Bonnefoy, A. Boccaletti, C. Desgrange, S. Desidera, R. Galicher, A. M. Lagrange, M. Langlois, A. L. Maire, F. Menard, P. Vernazza, A. Vigan, A. Zurlo, T. Fenouillet, J. C. Lambert, et al.
Astronomy & Astrophysics 639 A113 (2020)
https://doi.org/10.1051/0004-6361/202037605

Dynamical Mass Estimates of the β Pictoris Planetary System through Gaussian Process Stellar Activity Modeling

Thomas Vandal, Julien Rameau and René Doyon
The Astronomical Journal 160 (5) 243 (2020)
https://doi.org/10.3847/1538-3881/abba30

Spectroscopic Detection of the Pre-White Dwarf Companion of Regulus

Douglas R. Gies, Kathryn V. Lester, Luqian Wang, Andrew Couperus, Katherine Shepard, Coralie Neiner, Gregg A. Wade, David W. Dunham and Joan B. Dunham
The Astrophysical Journal 902 (1) 25 (2020)
https://doi.org/10.3847/1538-4357/abb372

Dust Populations in the Iconic Vega Planetary System Resolved by ALMA

Luca Matrà, William R. F. Dent, David J. Wilner, Sebastián Marino, Mark C. Wyatt, Jonathan P. Marshall, Kate Y. L. Su, Miguel Chavez, Antonio Hales, A. Meredith Hughes, Jane S. Greaves and Stuartt A. Corder
The Astrophysical Journal 898 (2) 146 (2020)
https://doi.org/10.3847/1538-4357/aba0a4

Unlocking Galactic Wolf–Rayet stars with Gaia DR2 – I. Distances and absolute magnitudes

Gemma Rate and Paul A Crowther
Monthly Notices of the Royal Astronomical Society 493 (1) 1512 (2020)
https://doi.org/10.1093/mnras/stz3614

Multiband Polarimetric Imaging of HR 4796A with the Gemini Planet Imager

Pauline Arriaga, Michael P. Fitzgerald, Gaspard Duchêne, Paul Kalas, Maxwell A. Millar-Blanchaer, Marshall D. Perrin, Christine H. Chen, Johan Mazoyer, Mark Ammons, Vanessa P. Bailey, Trafis S. Barman, Joanna Bulger, Jeffrey K. Chilcote, Tara Cotten, Robert J. De Rosa, Rene Doyon, Thomas M. Esposito, Katherine B. Follette, Benjamin L. Gerard, Stephen Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Justin Hom, Li-Wei Hung, et al.
The Astronomical Journal 160 (2) 79 (2020)
https://doi.org/10.3847/1538-3881/ab91b1

Identification of Possible Stellar Companions via Speckle Interferometry in a Sample of Be Stars

T. B. Souza, C. A. Guerrero and M. Borges Fernandes
The Astronomical Journal 159 (4) 132 (2020)
https://doi.org/10.3847/1538-3881/ab6dcd

(Sub)stellar companions shape the winds of evolved stars

L. Decin, M. Montargès, A. M. S. Richards, C. A. Gottlieb, W. Homan, I. McDonald, I. El Mellah, T. Danilovich, S. H. J. Wallström, A. Zijlstra, A. Baudry, J. Bolte, E. Cannon, E. De Beck, F. De Ceuster, A. de Koter, J. De Ridder, S. Etoka, D. Gobrecht, M. Gray, F. Herpin, M. Jeste, E. Lagadec, P. Kervella, T. Khouri, et al.
Science 369 (6510) 1497 (2020)
https://doi.org/10.1126/science.abb1229

High-precision abundances of elements in solar-type stars

P. E. Nissen, J. Christensen-Dalsgaard, J. R. Mosumgaard, V. Silva Aguirre, E. Spitoni and K. Verma
Astronomy & Astrophysics 640 A81 (2020)
https://doi.org/10.1051/0004-6361/202038300

Evidence for a high mutual inclination between the cold Jupiter and transiting super Earth orbiting π Men

Jerry W Xuan and Mark C Wyatt
Monthly Notices of the Royal Astronomical Society 497 (2) 2096 (2020)
https://doi.org/10.1093/mnras/staa2033

New BRITE-Constellation observations of the roAp star α Cir

W. W. Weiss, H.-E. Fröhlich, T. Kallinger, R. Kuschnig, A. Popowicz, D. Baade, D. Buzasi, G. Handler, O. Kochukhov, O. Koudelka, A. F. J. Moffat, B. Pablo, G. Wade and K. Zwintz
Astronomy & Astrophysics 642 A64 (2020)
https://doi.org/10.1051/0004-6361/202038345

An Updated Visual Orbit of the Directly Imaged Exoplanet 51 Eridani b and Prospects for a Dynamical Mass Measurement with Gaia

Robert J. De Rosa, Eric L. Nielsen, Jason J. Wang, S. Mark Ammons, Gaspard Duchêne, Bruce Macintosh, Julien Rameau, Vanessa P. Bailey, Travis Barman, Joanna Bulger, Jeffrey Chilcote, Tara Cotten, Rene Doyon, Thomas M. Esposito, Michael P. Fitzgerald, Katherine B. Follette, Benjamin L. Gerard, Stephen J. Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Justin Hom, Li-Wei Hung, Patrick Ingraham, Paul Kalas, et al.
The Astronomical Journal 159 (1) 1 (2020)
https://doi.org/10.3847/1538-3881/ab4da4

Properties of carbon stars in the solar neighbourhood based on Gaia DR2 astrometry

C. Abia, P. de Laverny, S. Cristallo, G. Kordopatis and O. Straniero
Astronomy & Astrophysics 633 A135 (2020)
https://doi.org/10.1051/0004-6361/201936831