Spectroscopy of northern NLTT stars

DOI

We present initial results of an all-sky search for late-type dwarfs within 20pc of the Sun using the New Luyten Two-Tenths (NLTT) catalog cross-referenced with the Two Micron All Sky Survey (2MASS) database. The results were obtained with low-resolution optical spectroscopic follow-up of candidate nearby stars as a preliminary test of our methodology. M_J_, derived using spectral indices, and 2MASS J are used to estimate distances. Out of the 70 objects observed, 28 are identified as previously unrecognized objects within 25pc of the Sun, and up to 19 of these are within 20pc. One, LP 647-13, is an M9-type dwarf at 10.5pc, making it one of the four closest M9 dwarfs currently known. We also discuss the chromospheric activity of the observed dwarfs.

Cone search capability for table J/AJ/123/2828/table1 (Previously known objects in our sample of NLTT targets)

Cone search capability for table J/AJ/123/2828/table2 (Data for targets included in NLTT sample 1)

Cone search capability for table J/AJ/123/2828/table3 (Data for targets not included in NLTT sample 1)

Identifier
DOI http://doi.org/10.26093/cds/vizier.51232828
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/123/2828
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/123/2828
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/123/2828
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/123/2828
Provenance
Creator Cruz K.L.; Reid I.N.
Publisher CDS
Publication Year 2003
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy