干旱区生态环境知识资源中心(Arid): Dynamical masses for two M1+mid-M dwarf binaries monitored during the SPHERE-SHINE survey

Arid

DOI	10.1051/0004-6361/202142438
	Dynamical masses for two M1+mid-M dwarf binaries monitored during the SPHERE-SHINE survey
	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-Sevilla, S.; Romero, C.; Bonnefoy, M.; Chauvin, G.; Feldt, M.; Meyer, M.; Vigan, A.; Pavlov, A.; Soenke, C.; LeMignant, D.; Roux, A.
通讯作者	Biller, BA (corresponding author)，Univ Edinburgh, Inst Astron, SUPA, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland. ; Biller, BA (corresponding author)，Univ Edinburgh, Ctr Exoplanet Sci, Edinburgh, Midlothian, Scotland. ; Biller, BA (corresponding author)，Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.
来源期刊	ASTRONOMY & ASTROPHYSICS
ISSN	0004-6361
EISSN	1432-0746
出版年	2022
卷号	658
英文摘要	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 GJ 282AB, the two wide K star companions to HIP 36985, using the 40 cm Remote Observatory Atacama Desert 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 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 M-circle dot, fully consistent with its M1 spectral type, and a secondary mass of 0.145 +/- M-circle dot. The secondary masses derived with and without including HIPPARCOS-Gaia data are all considerably more massive than the 0.1 M-circle dot mass estimated 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 M-Jup 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 M-circle dot and a secondary mass of 0.185 +/- 0.001 M-circle dot, which agree well with photometric estimates of component masses, the masses estimated from M-K- mass relationships for M dwarf stars, and previous dynamical masses in the literature.
英文关键词	astrometry binaries visual stars low-mass stars imaging infrared stars stars fundamental parameters
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000753660000002
WOS关键词	STELLAR KINEMATIC GROUPS ; RADIAL-VELOCITY ; VARIABLE-STARS ; BROWN DWARFS ; CATALOG ; AGE ; PERFORMANCES ; COMPANIONS ; ASTROMETRY ; EXOPLANETS
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376303
作者单位	[Biller, B. A.] Univ Edinburgh, Inst Astron, SUPA, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland; [Biller, B. A.] Univ Edinburgh, Ctr Exoplanet Sci, Edinburgh, Midlothian, Scotland; [Biller, B. A.; Janson, M.; Maire, A-L; Schlieder, J.; Henning, T.; Brown-Sevilla, S.; Feldt, M.; Pavlov, A.] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany; [Grandjean, A.; Delorme, P.; Lagrange, A-M; Romero, C.; Bonnefoy, M.; Chauvin, G.; Roux, A.] Univ Grenoble Alpes, IPAG, CNRS, F-38000 Grenoble, France; [Messina, S.] INAF Catania Astrophys Observ, Via S Sofia 78, I-95123 Catania, Italy; [Desidera, S.; Mesa, D.; Gratton, R.; D'Orazi, V] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy; [Lagrange, A-M] Univ Paris, Sorbonne Univ, Univ PSL, Observ Paris,LESIA,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France; [Lagrange, A-M] IMCCE Observ Paris, 77 Ave Denfert Rochereau, F-75014 Paris, France; [Hambsch, F-J] Amer Assoc Variable Star Observers, 49 Bay State Rd, Cambridge,...
推荐引用方式 GB/T 7714	Biller, B. A.,Grandjean, A.,Messina, S.,et al. Dynamical masses for two M1+mid-M dwarf binaries monitored during the SPHERE-SHINE survey[J],2022,658.
APA	Biller, B. A..,Grandjean, A..,Messina, S..,Desidera, S..,Delorme, P..,...&Roux, A..(2022).Dynamical masses for two M1+mid-M dwarf binaries monitored during the SPHERE-SHINE survey.ASTRONOMY & ASTROPHYSICS,658.
MLA	Biller, B. A.,et al."Dynamical masses for two M1+mid-M dwarf binaries monitored during the SPHERE-SHINE survey".ASTRONOMY & ASTROPHYSICS 658(2022).