VizieR Online Data Catalog: Spectroscopy of bright M dwarfs in the northern sky (Lepine+, 2013)

Targets for the follow-up spectroscopic program were selected from the catalog of 8889 bright M dwarfs of Lepine & Gaidos (2011, cat. J/AJ/142/138). All stars are selected from the SUPERBLINK catalog of stars (Lepine & Shara, 2005, cat. I/298) with proper motions μ>40mas/yr.

Of the 1564 M dwarf candidates, we found that 286 had been observed at the MDM observatory by one of us (SL) prior to 2008 November, as part of a separate spectroscopic follow-up survey of very nearby (d<20pc) stars (Alpert & Lepine, 2011AAS...21724211A). The remaining targets were distributed between our observing teams at the MDM Observatory and University of Hawaii 2.2m telescope (UH22), with the MDM team in charge of higher declination targets (δ>30) and the UH22 team in charge of the lower declination range (0<δ<30).

Spectra were collected at the MDM observatory in a series of 22 observing runs scheduled between 2002 June and 2012 April. Most of the spectra were collected at the McGraw-Hill 1.3m telescope, but a number were obtained at the neighboring Hiltner 2.4m telescope. Two different spectrographs were used: the MkIII spectrograph, and the CCDS spectrograph. Both are facility instruments which provide low- to medium-resolution spectroscopy in the optical regime. Their operation at either 1.3m or 2.4m telescopes is identical. Data were collected in slit spectroscopy mode, with an effective slit width of 1.0" to 1.5". The MkIII spectrograph was used with two different gratings: the 300l/mm grating blazed at 8000Å, providing a spectral resolution R~2000, and the 600l/mm grating blazed at 5800Å, which provides R~4000. The two gratings were used with either one of two thick-chip CCD cameras (Wilbur and Nellie) both having negligible fringing in the red. Spectra for a total of 901 bright M dwarf targets were collected at MDM.

Additional spectra were obtained with the SuperNova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2m telescope on Mauna Kea between 2009 February and 2012 November. SNIFS has separate but overlapping blue (3200-5600Å) and red (5200-10000Å) spectrograph channels, along with an imaging channel, mounted behind a common shutter. The spectral resolution is ~1000 in the blue channel, and ~1300 in the red channel; the spatial resolution of the 225-lenslet array is 0.4". Spectra for 655 bright M dwarf targets were collected at UH22 with SNIFS.

(3 data files).