The First US Naval Observatory CCD Astrograph Catalog

Zacharias, N.; Urban, S. E.; Zacharias, M. I.; Hall, David; Wycoff, G. L.; Rafferty, T. J.; Germain, M. E.; Holdenried, E. R.; Pohlman, J. W.; Gauss, F. S.; Monet, D. G.; Winter, Lars

doi:10.1086/301563

Cited by 154 publications

(148 citation statements)

References 14 publications

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“…In the northern hemisphere, a smaller parallax program has been carried on at the Allegheny observatory, and parallaxes of 21 nearby stars have recently been reported (Gatewood & Coban 2009). The United States Naval Observatory has also been supporting a parallax program in the past decades, from observations made at the USNO Flagstaff station (Monet et al 1992;Zacharias et al 2000;Vrba et al 2004;Burgasser et al 2008;Dahn et al 2008); the program has notably contributed parallaxes for the first representative sample of brown dwarfs (Dahn et al 2002). The Torino Observatory Parallax Program has also recently contributed data on six white dwarf candidates (Smart et al 2003) and 22 suspected nearby red dwarfs (Smart et al 2007).…”

Section: Introductionmentioning

confidence: 99%

New Neighbors: Parallaxes of 18 Nearby Stars Selected From the LSPM-North Catalog

Lépine

Thorstensen

Shara

et al. 2009

The Astronomical Journal

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We present astrometric parallaxes for 18 suspected nearby stars selected from the LSPM-north proper motion catalog. Sixteen objects are confirmed to be main sequence M dwarfs within 16 parsecs of the Sun, including three stars (LSPM J0011+5908, LSPM J0330+5413, LSPM J0510+2714) which lie just within the 10 parsec horizon. Two other targets (LSPM J1817+1328, LSPM J2325+1403) are confirmed to be nearby white dwarfs at distances of 14 and 22 parsecs, respectively. One of our targets, the common proper motion pair LSPM J0405+7116E + LSPM J0405+7116W, is revealed to be a triple system, with the western component resolved into a pair of 16th magnitude stars (LSPM J0405+7116W-A and LSPM J0405+7116W-B) with a 0.7±0.1 ′′ angular separation. We find two stars (LSPM J1314+1320 and LSPM J1757+7042) to be significantly overluminous for their colors, and conclude that these may be unresolved doubles/multiples.

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Section: Introductionmentioning

confidence: 99%

New Neighbors: Parallaxes of 18 Nearby Stars Selected From the LSPM-North Catalog

Lépine

Thorstensen

Shara

et al. 2009

The Astronomical Journal

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“…On the other hand, positions and proper motions of large sets of faint stars have been determined in the Hipparcos system, using ground-based observations, e.g., the Tycho-2 (Hog et al 2000) and UCAC1 (Zacharias et al 2000) Catalogues. These Catalogues have allowed various small field investigations to be performed in the new system (e.g., Dias et al 2000;Teixeira et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Proper motions of open clusters within 1 kpc based on the TYCHO2 Catalogue

Dias

Lépine

Alessi

2001

A&A

116

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Abstract. We present mean absolute proper motions of 112 open clusters, determined using the data from the Tycho2 Catalogue. For 28 clusters, this is the first determination of proper motion. The measurements made use of a large number of stars (usually several tens) for each cluster. The total number of stars studied in the fields of the 164 open clusters is 5016, of which 4006 were considered members. The mean proper motions of the clusters and membership probability of individual stars were obtained from the proper motion data by applying the statistical method proposed by Sanders (1971).

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“…At moderate zenith angles, the amplitude of colour effects of ∼20 mas is quite small, but not can be neglected in precise studies linking optical and radio reference frames (Stone et al 1999). Colours may be derived two ways: based on R values measured with the MAC, and by using R values of the USNO CCD Astrograph Catalogue (UCAC) having a passband of 579-642 nm (Zacharias et al 2000).…”

Section: Observing Programsmentioning

confidence: 99%

Observing programs of the Kyiv meridian axial circle equipped with a CCD micrometer

Tel'Nyuk-Adamchuk

Babenko

Lazorenko

et al. 2002

A&A

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Abstract. The present status of the Kyiv meridian axial circle after its refurbishment is described. The mounting of a new micrometer with the front-illuminated CCD 1040×1160 allows to observe stars up to V = 16 mag. For the stars of 11-14 mag, the internal positional accuracy of a single observation is 0.05-0.10 , and stellar V values are determined with an accuracy of 0.03-0.06 mag. The project of observations of star fields in the direction of 209 extragalactic radio-sources in declination zone 0+30 • is now in progress. The catalogue of positions, magnitudes and proper motions of secondary reference stars in regions with ICRF sources is expected to be compiled by 2003. Another project under way is a long-term astrometric survey of the equatorial zone to extend the Hipparcos-Tycho frame to fainter stars, and to measure their magnitudes and V − R colours.

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The First US Naval Observatory CCD Astrograph Catalog

Cited by 154 publications

References 14 publications

New Neighbors: Parallaxes of 18 Nearby Stars Selected From the LSPM-North Catalog

New Neighbors: Parallaxes of 18 Nearby Stars Selected From the LSPM-North Catalog

Proper motions of open clusters within 1 kpc based on the TYCHO2 Catalogue

Observing programs of the Kyiv meridian axial circle equipped with a CCD micrometer

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