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HD 119713


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The calibration of the Stromgren photometric system for A, F and early G supergiants. I - The observational data
An empirical calibration of the Stromgren uvby-beta photometric systemfor the A, F, and early G supergiants is being derived. This paperexplains the observational program and the photometric reductiontechniques used and presents a catalog of new Stromgren photometry forover 600 A, F, and G supergiants.

Estimation of spectral classifications for bright southern stars with interesting Stromgren indices
This paper investigates the degree of success with which uvby photometrycan be applied to predict spectral classifications for 947 A, F, and Gstars brighter than an apparent magnitude of 8.3 and with four-colorindices indicating some kind of interesting, unusual, or peculiarspectrum. One or several possible spectral classifications are estimatedfor each star from photometry alone, double stars are distinguished, andthe estimates are compared with published classifications. The resultsshow that the framework provided by uvby photometry can be extended toinclude most G and K stars, reddened stars, peculiar stars, and certaintypes of double star.

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观测天体数据

星座:半人馬座
右阿森松:13h45m31.93s
赤纬:-39°21'21.2"
视星:7.757
距离:180.18 天文距离
右阿森松适当运动:-41.2
赤纬适当运动:-11.4
B-T magnitude:8.291
V-T magnitude:7.802

目录:
适当名称   (Edit)
HD 1989HD 119713
TYCHO-2 2000TYC 7789-364-1
USNO-A2.0USNO-A2 0450-16230638
HIPHIP 67135

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