Presentation Title

Imaging Analysis and Spectroscopy of Resolved Very Low Mass Binary Systems

Faculty Mentor

Adam Burgasser

Start Date

18-11-2017 2:15 PM

End Date

18-11-2017 3:15 PM

Location

BSC-Ursa Minor 31

Session

Poster 3

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

Low-mass stars and brown dwarfs are among the most common objects in the Milky Way Galaxy, but theories of their formation and evolution remain poorly constrained. Binary systems are important for understanding the formation of these objects and for making direct orbit and mass measurements to validate evolutionary theories. We present SpeX observations of three new binary systems. In each case, near-infrared spectroscopy indicates late-M spectral types, in one case nearly identical M7 twins. By modeling the imaging data, we measured the separations, position angles and relative brightnesses of the systems, and used our spectroscopic analysis to estimate their distances, projected separations and tangential velocities. We also performed atmosphere model fits to assess their physical properties. We place this set of binaries in context with other widely-separated late M dwarf binaries.

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Nov 18th, 2:15 PM Nov 18th, 3:15 PM

Imaging Analysis and Spectroscopy of Resolved Very Low Mass Binary Systems

BSC-Ursa Minor 31

Low-mass stars and brown dwarfs are among the most common objects in the Milky Way Galaxy, but theories of their formation and evolution remain poorly constrained. Binary systems are important for understanding the formation of these objects and for making direct orbit and mass measurements to validate evolutionary theories. We present SpeX observations of three new binary systems. In each case, near-infrared spectroscopy indicates late-M spectral types, in one case nearly identical M7 twins. By modeling the imaging data, we measured the separations, position angles and relative brightnesses of the systems, and used our spectroscopic analysis to estimate their distances, projected separations and tangential velocities. We also performed atmosphere model fits to assess their physical properties. We place this set of binaries in context with other widely-separated late M dwarf binaries.