VizieR Online Data Catalog: How to constrain your M dwarf. II. Nearby binaries (Mann+, 2019)

We obtained near infra-red (NIR) spectra for 58 of our 62 nearby binary targets using the SpeX spectrograph on the NASA Infrared Telescope Facility (IRTF) atop Maunakea. Observations were taken between 2011 May and 2017 November (wavelength coverage from 0.9 to 2.5um and R~2000).

We analyzed a mix of Adaptative Optics (AO) data from our own program with Keck/NIRC2 and archival imaging from the Keck II Telescope, the Canada-France-Hawaii Telescope (CFHT), the Very Large Telescope (VLT), and the Gemini North Telescope.

As part of a long-term monitoring program with KeckII atop Maunakea, between 2015 June and 2018 July we observed 51 of the 55 multistar systems analyzed here. All observations were taken using the facility AO imager NIRC2 (in K' (λ_c=2.124um) or narrow K_cont (λ_c=2.271um) filter). In addition to our own data, we downloaded images from the Keck Observatory Archive (KOA), spanning 2002 March to 2015 November, all of which were taken with the NIRC2 imager (in H- or K-band filters).

We obtained data for 34 of our targets from the Canadian Astronomy Data Centre archive, all taken with the 3.6m Canada-France-Hawaii Telescope (CFHT) using the Adaptive Optics Bonnette (AOB) and the KIR infrared camera. A total of 239 data sets were included. Observations spanned 1997 December to 2007 January. Images were taken using a range of filters across JHK bands, but the majority used either the narrowband Brγ or [FeII] filters.

We downloaded AO-corrected images from the European Southern Observatory (ESO) archive taken with the Nasmyth Adaptive Optics System Near-Infrared Imager and Spectrograph (NAOS-CONICA, or NaCo) instrument on very large telescope (VLT). Data spanned 2002 November to 2016 October, with about half of the 72 data sets taken from 2001 to 2005. Data covered 21 of our targets with a wide range of filters, but the majority were taken either in broadband Ks and L or narrowband [FeII] and Brγ filters.

We retrieved 36 data sets for eight of our targets from the Gemini archive, all taken with the AO Near-Infrared imager (NIRI) on the Frederick C. Gillett Gemini Telescope (Gemini North). All observations were taken between 2004 August and 2011 February with the assistance of the ALTtitude conjugate Adaptive optics for the InfraRed (ALTAIR). Most observations were taken using broadband J-, H-, or K-band filters.

(3 data files).