NOAO >   Observing Info >   Approved Programs >   2017A-0380

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Program Information for 2017A-0380


PI: Masashi Omiya, NAOJ, omiya.masashi@nao.ac.jp
Address: Extrasolar Planet Detection Project Office, 2-21-1 Ohsawa, Mitaka, Tokyo 181-8588 Japan

CoI: Masayuki Kuzuhara, Astrobiology Center of NINS
CoI: Bun'Ei Sato, Tokyo Institute of Technology
CoI: Teruyuki Hirano, Tokyo Institute of Technology
CoI: Yohei Koizumi, Tokyo Institute of Technology
CoI: Tadashi Nakajima, NAOJ
CoI: Hiroki Harakawa, NAOJ
CoI: Wako Aoki, NAOJ
CoI: Norio Narita, University of Tokyo
CoI: Shogo Nishiyama, Miyagi University of Education
CoI: Akihiko Fukui, NAOJ

Title: Spectroscopic survey of nearby late-M dwarfs for near-future Earth-like planet searches II

Abstract: M dwarfs are the key targets for any future extensive planet-search programs including TESS and our planning infrared Doppler planet search with Subaru Telescope, because their small masses, radii, and luminosities are the distinctive advantages in searching for habitable Earth-like planets. However, a non-negligible fraction of late-M dwarfs are active and fast rotators, making it challenging to precisely measure their RVs and confirm the planet detections; the rotation and activity of an M dwarf therefore must be constrained before its radial velocity observations. We here propose to continue our characterization program for nearby 100 M-dwarfs, which we proposed to observe in 2016B (2016B- 0275) to obtain their medium-resolution optical spectra using HYDRA and Bench Spectrograph on the WIYN 3.5m telescope. The obtained optical spectra are available to measure the H$alpha$ emissions of the M dwarfs, as well as to determine their stellar properties. The equivalent width of an H$alpha$ emission well correlates with the rotation velocity, distinguishing slowly-rotating M dwarfs from the rests. These WIYN observations are crucial to complete our constructing M-dwarf database that significantly helps us explore exoplanets around late-M dwarfs.

Program Type: Standard/NASA WIYN

Scheduled Nights:
Run 1 (2017A):  WIYN/GRDPK -- 5n on May 02 - May 06 2017


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NOAO >   Observing Info >   Approved Programs >   2017A-0380

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