期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 435, 期 3, 页码 2161-2170出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stt1436
关键词
catalogues; Stars: low-mass; Galaxy: stellar content
资金
- RoPACS, a Marie Curie Initial Training Network
- European Commissions Seventh Framework Programme
- Science and Technology Facilities Council [ST/F007280/1, ST/G002622/1, ST/L001403/1] Funding Source: researchfish
- STFC [ST/L001403/1, ST/J001333/1, ST/F007280/1, ST/G002622/1] Funding Source: UKRI
Using the Position and Proper Motion Extended-L (PPMXL) catalogue, we have used optical and near-infrared colour cuts together with a reduced proper motion cut to find bright M dwarfs for future exoplanet transit studies. PPMXL's low proper motion uncertainties allow us to probe down to smaller proper motions than previous similar studies. We have combined unique objects found with this method to that of previous work to produce 8479 K < 9 M dwarfs. Low-resolution spectroscopy was obtained of a sample of the objects found using this selection method to gain statistics on their spectral type and physical properties. Results show a spectral-type range of K7-M4V. This catalogue is the most complete collection of K < 9 M dwarfs currently available and is made available here.
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