The UltracoolSheet: Photometry, Astrometry, Spectroscopy, and Multiplicity for 3000+ Ultracool Dwarfs and Imaged Exoplanets

The UltracoolSheet is a catalog of 3000+ ultracool dwarfs (spectral types M6 and later) and imaged exoplanets, including photometry, absolute astrometry, proper motions, parallaxes, multiplicity (including orbit determinations), and spectroscopic classifications.

The catalog lives in a Google spreadsheet at

      http://bit.ly/UltracoolSheet

where it will receive future updates.  The README tab in the spreadsheet contains a detailed description of the contents of the catalog.

The first public release, posted here as CSV files, is intended to be a catalog of all spectroscopically confirmed objects of spectral type L0 or later in the extended solar neighborhood (􏰁out to ~100 pc) that were known as of April 15, 2015, augmented by more recent discoveries and late-M dwarfs from the Database of Ultracool Parallaxes, which this compilation supersedes.

When using data from the UltracoolSheet, please cite the individual papers from which the data comes. Citations codes are included for all the data in the tables, and the References table translates the citation codes into ADS bibcodes, Papers citekeys, and publication titles.

For research that benefits from this compilation, please cite this Zenodo post and include the following acknowledgment:

"This work has benefited from The UltracoolSheet at http://bit.ly/UltracoolSheet, maintained by Will Best, Trent Dupuy, Michael Liu, Rob Siverd, and Zhoujian Zhang, and developed from compilations by Dupuy & Liu (2012), Dupuy & Kraus (2013), Liu et al. (2016), Best et al. (2018), and Best et al. (2020b, AJ, in press)."

Questions, comments, suggestions, or contributions?
Please send them to ultracool.sheet@gmail.com (especially contributions!)