Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey

Beth A. Biller; Antoine Grandjean; Sergio Messina; Silvano Desidera; Philippe Delorme; Anne-Marie Lagrange; Franz-Josef Hambsch; Dino Mesa; Markus Janson; Raffaele Gratton; Valentina D'Orazi; Maud Langlois; Anne-Lise Maire; Joshua Schlieder; Thomas Henning; Alice Zurlo; Janis Hagelberg; S. Brown; C. Romero; Mickael Bonnefoy; Gael Chauvin; Markus Feldt; Michael Meyer; Arthur Vigan; A. Pavlov; C. Soenke; D. LeMignant; A. Roux

doi:10.1051/0004-6361/202142438

Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey

Beth A. Biller, Antoine Grandjean, Sergio Messina, Silvano Desidera, Philippe Delorme, Anne-Marie Lagrange, Franz-Josef Hambsch, Dino Mesa, Markus Janson, Raffaele Gratton, Valentina D'Orazi, Maud Langlois, Anne-Lise Maire, Joshua Schlieder, Thomas Henning, Alice Zurlo, Janis Hagelberg, S. Brown, C. Romero, Mickael BonnefoyGael Chauvin, Markus Feldt, Michael Meyer, Arthur Vigan, A. Pavlov, C. Soenke, D. LeMignant, A. Roux

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

We present orbital fits and dynamical masses for HIP 113201AB and HIP 36985AB, two M1 + mid-M dwarf binary systems monitored as part of the SPHERE SHINE survey. To robustly determine the age of both systems via gyrochronology, we undertook a photometric monitoring campaign for HIP 113201 and for GJ 282AB, the two wide K star companions to HIP 36985, using the 40 cm Remote Observatory Atacama Desert (ROAD) telescope. Based on this monitoring and gyrochronological relationships, we adopt ages of 1.2±0.1 Gyr for HIP 113201AB and 750±100 Myr for HIP 36985AB. These systems are sufficiently old that we expect that all components of these binaries will have reached the main sequence. To derive dynamical masses for all components of the HIP 113201AB and HIP 36985AB systems, we used parallel-tempering Markov Chain Monte Carlo sampling to fit a combination of radial velocity, direct imaging, and Gaia and Hipparcos astrometry. Fitting the direct imaging and radial velocity data for HIP 113201 yields a primary mass of 0.54±0.03 MΘ, fully consistent with its M1 spectral type, and a secondary mass of 0.145± MΘ. The secondary masses derived with and without including Hipparcos/Gaia data are all considerably more massive than the 0.1 MΘ estimated mass from the
photometry of the companion. Thus, the dynamical impacts of this companion suggest that it is more massive than expected from its photometry. An undetected brown dwarf companion to HIP 113201B could be a natural explanation for this apparent discrepancy. At an age >1 Gyr, a 30 MJup companion to HIP 113201B would make a negligible (<1%) contribution to the system luminosity, but could have strong dynamical impacts. Fitting the direct imaging, radial velocity, and Hipparcos/Gaia proper motion anomaly for HIP
36985AB, we find a primary mass of 0.54±0.01 MΘ and a secondary mass of 0.185±0.001 MΘ which agree well with photometric estimates of component masses, the masses estimated from MK– mass relationships for M dwarf stars, and previous dynamical masses in the literature.

Original language	English
Article number	A145
Pages (from-to)	1-23
Number of pages	23
Journal	Astronomy and Astrophysics
Volume	658
DOIs	https://doi.org/10.1051/0004-6361/202142438
Publication status	Published - 10 Feb 2022

Keywords / Materials (for Non-textual outputs)

Astrometry
Binaries: visual
Infrared: stars
Stars: fundamental parameters
Stars: imaging
Stars: low-mass

Access to Document

10.1051/0004-6361/202142438

Astronomy and Astrophysics at Edinburgh
Dunlop, J., Best, P., Biller, B., Ferguson, A., Hambly, N., Heymans, C., Khochfar, S., Lawrence, A., Liddle, A., Mann, B., McLure, R., Meiksin, A., Peacock, J., Penarrubia, J., Rice, K. & Taylor, A.
STFC
1/04/15 → 30/09/18
Project: Research

Cite this

Biller, B. A., Grandjean, A., Messina, S., Desidera, S., Delorme, P., Lagrange, A.-M., Hambsch, F.-J., Mesa, D., Janson, M., Gratton, R., D'Orazi, V., Langlois, M., Maire, A.-L., Schlieder, J., Henning, T., Zurlo, A., Hagelberg, J., Brown, S., Romero, C., ... Roux, A. (2022). Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey. Astronomy and Astrophysics, 658, 1-23. Article A145. https://doi.org/10.1051/0004-6361/202142438

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title = "Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey",

abstract = "We present orbital fits and dynamical masses for HIP 113201AB and HIP 36985AB, two M1 + mid-M dwarf binary systems monitored as part of the SPHERE SHINE survey. To robustly determine the age of both systems via gyrochronology, we undertook a photometric monitoring campaign for HIP 113201 and for GJ 282AB, the two wide K star companions to HIP 36985, using the 40 cm Remote Observatory Atacama Desert (ROAD) telescope. Based on this monitoring and gyrochronological relationships, we adopt ages of 1.2±0.1 Gyr for HIP 113201AB and 750±100 Myr for HIP 36985AB. These systems are sufficiently old that we expect that all components of these binaries will have reached the main sequence. To derive dynamical masses for all components of the HIP 113201AB and HIP 36985AB systems, we used parallel-tempering Markov Chain Monte Carlo sampling to fit a combination of radial velocity, direct imaging, and Gaia and Hipparcos astrometry. Fitting the direct imaging and radial velocity data for HIP 113201 yields a primary mass of 0.54±0.03 MΘ, fully consistent with its M1 spectral type, and a secondary mass of 0.145± MΘ. The secondary masses derived with and without including Hipparcos/Gaia data are all considerably more massive than the 0.1 MΘ estimated mass from thephotometry of the companion. Thus, the dynamical impacts of this companion suggest that it is more massive than expected from its photometry. An undetected brown dwarf companion to HIP 113201B could be a natural explanation for this apparent discrepancy. At an age >1 Gyr, a 30 MJup companion to HIP 113201B would make a negligible (<1%) contribution to the system luminosity, but could have strong dynamical impacts. Fitting the direct imaging, radial velocity, and Hipparcos/Gaia proper motion anomaly for HIP36985AB, we find a primary mass of 0.54±0.01 MΘ and a secondary mass of 0.185±0.001 MΘ which agree well with photometric estimates of component masses, the masses estimated from MK– mass relationships for M dwarf stars, and previous dynamical masses in the literature.",

keywords = "Astrometry, Binaries: visual, Infrared: stars, Stars: fundamental parameters, Stars: imaging, Stars: low-mass",

author = "Biller, {Beth A.} and Antoine Grandjean and Sergio Messina and Silvano Desidera and Philippe Delorme and Anne-Marie Lagrange and Franz-Josef Hambsch and Dino Mesa and Markus Janson and Raffaele Gratton and Valentina D'Orazi and Maud Langlois and Anne-Lise Maire and Joshua Schlieder and Thomas Henning and Alice Zurlo and Janis Hagelberg and S. Brown and C. Romero and Mickael Bonnefoy and Gael Chauvin and Markus Feldt and Michael Meyer and Arthur Vigan and A. Pavlov and C. Soenke and D. LeMignant and A. Roux",

note = "Publisher Copyright: {\textcopyright} ESO 2022.",

year = "2022",

month = feb,

day = "10",

doi = "10.1051/0004-6361/202142438",

language = "English",

volume = "658",

pages = "1--23",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

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Biller, BA, Grandjean, A, Messina, S, Desidera, S, Delorme, P, Lagrange, A-M, Hambsch, F-J, Mesa, D, Janson, M, Gratton, R, D'Orazi, V, Langlois, M, Maire, A-L, Schlieder, J, Henning, T, Zurlo, A, Hagelberg, J, Brown, S, Romero, C, Bonnefoy, M, Chauvin, G, Feldt, M, Meyer, M, Vigan, A, Pavlov, A, Soenke, C, LeMignant, D & Roux, A 2022, 'Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey', Astronomy and Astrophysics, vol. 658, A145, pp. 1-23. https://doi.org/10.1051/0004-6361/202142438

TY - JOUR

T1 - Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey

AU - Biller, Beth A.

AU - Grandjean, Antoine

AU - Messina, Sergio

AU - Desidera, Silvano

AU - Delorme, Philippe

AU - Lagrange, Anne-Marie

AU - Hambsch, Franz-Josef

AU - Mesa, Dino

AU - Janson, Markus

AU - Gratton, Raffaele

AU - D'Orazi, Valentina

AU - Langlois, Maud

AU - Maire, Anne-Lise

AU - Schlieder, Joshua

AU - Henning, Thomas

AU - Zurlo, Alice

AU - Hagelberg, Janis

AU - Brown, S.

AU - Romero, C.

AU - Bonnefoy, Mickael

AU - Chauvin, Gael

AU - Feldt, Markus

AU - Meyer, Michael

AU - Vigan, Arthur

AU - Pavlov, A.

AU - Soenke, C.

AU - LeMignant, D.

AU - Roux, A.

PY - 2022/2/10

Y1 - 2022/2/10

N2 - We present orbital fits and dynamical masses for HIP 113201AB and HIP 36985AB, two M1 + mid-M dwarf binary systems monitored as part of the SPHERE SHINE survey. To robustly determine the age of both systems via gyrochronology, we undertook a photometric monitoring campaign for HIP 113201 and for GJ 282AB, the two wide K star companions to HIP 36985, using the 40 cm Remote Observatory Atacama Desert (ROAD) telescope. Based on this monitoring and gyrochronological relationships, we adopt ages of 1.2±0.1 Gyr for HIP 113201AB and 750±100 Myr for HIP 36985AB. These systems are sufficiently old that we expect that all components of these binaries will have reached the main sequence. To derive dynamical masses for all components of the HIP 113201AB and HIP 36985AB systems, we used parallel-tempering Markov Chain Monte Carlo sampling to fit a combination of radial velocity, direct imaging, and Gaia and Hipparcos astrometry. Fitting the direct imaging and radial velocity data for HIP 113201 yields a primary mass of 0.54±0.03 MΘ, fully consistent with its M1 spectral type, and a secondary mass of 0.145± MΘ. The secondary masses derived with and without including Hipparcos/Gaia data are all considerably more massive than the 0.1 MΘ estimated mass from thephotometry of the companion. Thus, the dynamical impacts of this companion suggest that it is more massive than expected from its photometry. An undetected brown dwarf companion to HIP 113201B could be a natural explanation for this apparent discrepancy. At an age >1 Gyr, a 30 MJup companion to HIP 113201B would make a negligible (<1%) contribution to the system luminosity, but could have strong dynamical impacts. Fitting the direct imaging, radial velocity, and Hipparcos/Gaia proper motion anomaly for HIP36985AB, we find a primary mass of 0.54±0.01 MΘ and a secondary mass of 0.185±0.001 MΘ which agree well with photometric estimates of component masses, the masses estimated from MK– mass relationships for M dwarf stars, and previous dynamical masses in the literature.

AB - We present orbital fits and dynamical masses for HIP 113201AB and HIP 36985AB, two M1 + mid-M dwarf binary systems monitored as part of the SPHERE SHINE survey. To robustly determine the age of both systems via gyrochronology, we undertook a photometric monitoring campaign for HIP 113201 and for GJ 282AB, the two wide K star companions to HIP 36985, using the 40 cm Remote Observatory Atacama Desert (ROAD) telescope. Based on this monitoring and gyrochronological relationships, we adopt ages of 1.2±0.1 Gyr for HIP 113201AB and 750±100 Myr for HIP 36985AB. These systems are sufficiently old that we expect that all components of these binaries will have reached the main sequence. To derive dynamical masses for all components of the HIP 113201AB and HIP 36985AB systems, we used parallel-tempering Markov Chain Monte Carlo sampling to fit a combination of radial velocity, direct imaging, and Gaia and Hipparcos astrometry. Fitting the direct imaging and radial velocity data for HIP 113201 yields a primary mass of 0.54±0.03 MΘ, fully consistent with its M1 spectral type, and a secondary mass of 0.145± MΘ. The secondary masses derived with and without including Hipparcos/Gaia data are all considerably more massive than the 0.1 MΘ estimated mass from thephotometry of the companion. Thus, the dynamical impacts of this companion suggest that it is more massive than expected from its photometry. An undetected brown dwarf companion to HIP 113201B could be a natural explanation for this apparent discrepancy. At an age >1 Gyr, a 30 MJup companion to HIP 113201B would make a negligible (<1%) contribution to the system luminosity, but could have strong dynamical impacts. Fitting the direct imaging, radial velocity, and Hipparcos/Gaia proper motion anomaly for HIP36985AB, we find a primary mass of 0.54±0.01 MΘ and a secondary mass of 0.185±0.001 MΘ which agree well with photometric estimates of component masses, the masses estimated from MK– mass relationships for M dwarf stars, and previous dynamical masses in the literature.

KW - Astrometry

KW - Binaries: visual

KW - Infrared: stars

KW - Stars: fundamental parameters

KW - Stars: imaging

KW - Stars: low-mass

U2 - 10.1051/0004-6361/202142438

DO - 10.1051/0004-6361/202142438

M3 - Article

SN - 0004-6361

VL - 658

SP - 1

EP - 23

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A145

ER -

Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

Access to Document

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Projects

Astronomy and Astrophysics at Edinburgh

Cite this