| Issue |
A&A
Volume 464, Number 2, March III 2007
|
|
|---|---|---|
| Page(s) | 787 - 791 | |
| Section | Celestial mechanics and astrometry | |
| DOI | https://doi.org/10.1051/0004-6361:20066408 | |
| Published online | 02 January 2007 | |
Nearby star candidates in the Torino observatory parallax program
1
Istituto Nazionale di Astrofisica (INAF), Osservatorio Astronomico di Torino, Strada Osservatorio 20, 10025 Pino Torinese, Italy e-mail: [smart; lattanzi; bucc; massone]@oato.inaf.it
2
Astronomisches Rechen-Institut am Zentrum für Astronomie der Universität Heidelberg, Mönchhofstr. 12-14, 69120 Heidelberg, Germany e-mail: hartmut@ari.uni-heidelberg.de
Received:
16
September
2006
Accepted:
20
December
2006
Aims.Candidates with suspect distances from the Catalog of Nearby Stars were included in the Torino Observatory Parallax Program with the goal to clarify their membership in that catalog.
Methods.Observations of the objects were made over the period 1996–2001 on the 1.05 m Torino telescope. The trigonometric parallaxes and proper motions were determined using standard techniques.
Results.Of the 22 objects examined, 11 are within the 25 pc horizon of the Catalog of Nearby Stars. The remaining objects are either misclassified, sub-dwarfs rather than main sequence dwarfs with consequently overestimated photometric distances, or objects with published trigonometric parallaxes that are incorrect.
Key words: astrometry / methods: data analysis / stars: distances / stars: fundamental parameters / subdwarfs / stars: low-mass, brown dwarfs
© ESO, 2007
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.