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HD 112990


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Kinematics and properties of F stars near the North Galactic Pole. II - The isothermal disc
Radial velocities are given for about 550 photometrically-identifieddisk-population F stars lying within 15 deg of the North Galactic Pole.The overall radial and z-velocity distributions are found to be closelyGaussian, with corrected rms and mean z velocities of 11.3 + or - 0.6and -9.5 + or - 0.5 km/s, respectively. The isothermal kinematics of thepopulation are reflected in the constant velocity dispersion to a zdistance of 400 pc. No systematic variation of either the velocitydispersion or the stellar age with the metallicity-sensitive Stromgrendelta m1 index is noted over a range of ages up to 5 Gyr.

Further Studies of A-Stars and F-Stars in the Region of the North Galactic Pole - Part Four - a Catalogue of Uvbyr Photometry and Derived Quantities
Not Available

Further Studies of A-Stars and F-Stars in the Region of the North Galactic Pole - Part Three - a Catalogue of Star Names and Positions
Not Available

Parallaxes and proper motions of stars from plates taken with the VanVleck 20-inch refractor .
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1968AJ.....73..744G&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Basakci
Sað Açýklýk:13h00m31.83s
Yükselim:+12°43'32.1"
Görünürdeki Parlaklýk:10.527
özdevim Sað Açýklýk:-32.2
özdevim Yükselim:11.1
B-T magnitude:10.771
V-T magnitude:10.548

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 112990
TYCHO-2 2000TYC 889-859-1
USNO-A2.0USNO-A2 0975-07089014
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