MEASURING THE NUMBER OF M DWARFS PER M DWARF USINGKEPLERECLIPSING BINARIES
نویسندگان
چکیده
منابع مشابه
Follow-up Observations of SPY White Dwarf + M-Dwarf Binaries
We present the results of follow-up observations of white-dwarf + M-dwarf binaries identified using spectra obtained as part of the SPY survey. Spectra of the Hα region were obtained with the SPIRAL spectrograph on the AAT telescope. Of the eleven stars observed, seven are binaries with periods in the range 2.8 hours to 7.7 days. We also show that one of our targets, WD 0137−349, has a brown dw...
متن کاملTwo nearby M dwarf binaries from 2 MASS
We report the discovery of two binary M dwarf systems in the immediate solar neighborhood using 2MASS. The first is an M6.5 companion to the nearby G star HD 86728 (Gl 376). The known properties of HD 86728 indicate that the M dwarf (Gl 376B) is old, metal-rich and only 14.9 parsecs away. The M dwarf is highly active with both Hα and X-ray emission. Thus, Gl 376B offers the opportunity to study...
متن کاملResolved Spectroscopy of M Dwarf/l Dwarf Binaries. I. Denis J220002.05−303832.9ab
We present the discovery of the common proper motion M9 + L0 binary DENIS J220002.05−303832.9AB, identified serendipitously with the SpeX near infrared imager/spectrograph. Spectral types are derived from resolved near infrared spectroscopy of the wellseparated (1. 09±0. 06) components and comparison to equivalent data for M and L dwarf spectral standards. Physical association is deduced from t...
متن کاملResolved Spectroscopy of M Dwarf/l Dwarf Binaries. Ii. 2mass J17072343 0558249ab
We present Infrared Telescope Facility SpeX observations of the M/L binary system 2MASS J17072343 0558249. SpeX imaging resolves the system into a 1B01 0B17 visual binary in which both components have red near-infrared colors. Resolved low-resolution (R 150) 0.8Y2.5 m spectroscopy reveals strong H2O, CO, and FeH bands and alkali lines in the spectra of both components, characteristic of late-ty...
متن کاملMetallicity determination of M dwarfs
Lindgren, S. 2017. Metallicity determination of M dwarfs. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1587. 46 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0127-3. M dwarfs constitute around 70% of all stars in the local Galaxy. Their multitude together with their long main-sequence lifetimes make them important for studies...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2015
ISSN: 1538-4357
DOI: 10.1088/0004-637x/813/1/75