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Title: The solar neighborhood. XXXV. Distances to 1404 M dwarf systems within 25 PC in the southern sky

Abstract

We present trigonometric, photometric, and photographic distances to 1748 southern (δ⩽0{sup ∘}) M dwarf systems with μ⩾0{sub ⋅}{sup ′′}18 yr{sup −1}, of which 1404 are believed to lie within 25 pc of the Sun. The stars have 6.67⩽V{sub J}⩽21.38 and 3.50⩽(V{sub J}−K{sub s})⩽9.27, covering the entire M dwarf spectral sequence from M0.0 V through M9.5 V. This sample therefore provides a comprehensive snapshot of our current knowledge of the southern sky for the nearest M dwarfs that dominate the stellar population of the Galaxy. Roughly one-third of the 1748 systems, each of which has an M dwarf primary, have published high quality parallaxes, including 179 from the REsearch Consortium On Nearby Stars astrometry program. For the remaining systems, we offer photometric distance estimates that have well-calibrated errors. The bulk of these (∼700) are based on new V{sub J}R{sub KC}I{sub KC} photometry acquired at the CTIO/SMARTS 0.9 m telescope, while the remaining 500 primaries have photographic plate distance estimates calculated using SuperCOSMOS B{sub J}R{sub 59F}I{sub IVN} photometry. Confirmed and candidate subdwarfs in the sample have been identified, and a census of companions is included.

Authors:
; ;
Publication Date:
OSTI Identifier:
22342176
Resource Type:
Journal Article
Journal Name:
Astronomical Journal (New York, N.Y. Online)
Additional Journal Information:
Journal Volume: 149; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COVERINGS; DISTANCE; DWARF STARS; GALAXIES; MASS; PHOTOMETRY; PLATES; SUN; TELESCOPES

Citation Formats

Winters, Jennifer G., Jao, Wei-Chun, Dieterich, Sergio B., E-mail: winters@astro.gsu.edu, E-mail: jao@astro.gsu.edu, E-mail: dieterich@astro.gsu.edu, and others, and. The solar neighborhood. XXXV. Distances to 1404 M dwarf systems within 25 PC in the southern sky. United States: N. p., 2015. Web. doi:10.1088/0004-6256/149/1/5.
Winters, Jennifer G., Jao, Wei-Chun, Dieterich, Sergio B., E-mail: winters@astro.gsu.edu, E-mail: jao@astro.gsu.edu, E-mail: dieterich@astro.gsu.edu, & others, and. The solar neighborhood. XXXV. Distances to 1404 M dwarf systems within 25 PC in the southern sky. United States. https://doi.org/10.1088/0004-6256/149/1/5
Winters, Jennifer G., Jao, Wei-Chun, Dieterich, Sergio B., E-mail: winters@astro.gsu.edu, E-mail: jao@astro.gsu.edu, E-mail: dieterich@astro.gsu.edu, and others, and. 2015. "The solar neighborhood. XXXV. Distances to 1404 M dwarf systems within 25 PC in the southern sky". United States. https://doi.org/10.1088/0004-6256/149/1/5.
@article{osti_22342176,
title = {The solar neighborhood. XXXV. Distances to 1404 M dwarf systems within 25 PC in the southern sky},
author = {Winters, Jennifer G. and Jao, Wei-Chun and Dieterich, Sergio B., E-mail: winters@astro.gsu.edu, E-mail: jao@astro.gsu.edu, E-mail: dieterich@astro.gsu.edu and others, and},
abstractNote = {We present trigonometric, photometric, and photographic distances to 1748 southern (δ⩽0{sup ∘}) M dwarf systems with μ⩾0{sub ⋅}{sup ′′}18 yr{sup −1}, of which 1404 are believed to lie within 25 pc of the Sun. The stars have 6.67⩽V{sub J}⩽21.38 and 3.50⩽(V{sub J}−K{sub s})⩽9.27, covering the entire M dwarf spectral sequence from M0.0 V through M9.5 V. This sample therefore provides a comprehensive snapshot of our current knowledge of the southern sky for the nearest M dwarfs that dominate the stellar population of the Galaxy. Roughly one-third of the 1748 systems, each of which has an M dwarf primary, have published high quality parallaxes, including 179 from the REsearch Consortium On Nearby Stars astrometry program. For the remaining systems, we offer photometric distance estimates that have well-calibrated errors. The bulk of these (∼700) are based on new V{sub J}R{sub KC}I{sub KC} photometry acquired at the CTIO/SMARTS 0.9 m telescope, while the remaining 500 primaries have photographic plate distance estimates calculated using SuperCOSMOS B{sub J}R{sub 59F}I{sub IVN} photometry. Confirmed and candidate subdwarfs in the sample have been identified, and a census of companions is included.},
doi = {10.1088/0004-6256/149/1/5},
url = {https://www.osti.gov/biblio/22342176}, journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 1,
volume = 149,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}