Inici     Començant     Sobreviure a l'Univers    
Inhabited Sky
    News@Sky     Astro Fotografia     La Col·lecció     Fòrum     Blog New!     FAQ     Premsa     Login  

HD 7494


Contingut

Imatges

Carregar la teva Imatge

DSS Images   Other Images


Articles Relacionats

UBV photoelectric catalogue (1986). II - Analysis
The UBV photoelectric data of the stars presenting several entries inthe 1986 edition of the UBV catalog have been systematicallyintercompared, and this paper presents a discussion of the stars forwhich discrepancies larger than 0.2 mag were found. Thirty-six probablyvariable stars have been detected, among which 18 are Be stars. Sixtyfurther stars present differences in the V magnitude larger than 0.2mag. Sixteen stars already appear in the NSV catalog. Although manyproblems are probably due to poor observations, new (eclipsing) variablestars may be found in this sample. Complete disagreement is foundbetween the values published from two independent sources in 34 cases. Afirst analysis of the quality of the UBV data shows that 65 percent ofthe differences in the V magnitude and in U-B color, for respectively11,500 and 7200 stars with two sources of data, are smaller than 0.04.The scatter on the B-V index appears to be smaller, since the samepercentage reaches 79 percent.

UBV photometry of 180 early-type stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974PASP...86..795G&db_key=AST

Enviar un nou article


Enllaços Relacionats

  • - No s'ha trobat enllaços -
Enviar un nou enllaç


Membre dels grups següents:


Dades d'Observació i Astrometria

Constel·lació:Cetus
Ascensió Recta:01h14m49.84s
Declinació:-13°44'52.0"
Magnitud Aparent:9.666
Moviment propi RA:0
Moviment propi Dec:9.4
B-T magnitude:10.091
V-T magnitude:9.702

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 7494
TYCHO-2 2000TYC 5275-1414-1
USNO-A2.0USNO-A2 0750-00295825
HIPHIP 5835

→ Sol·licitar més catàlegs i designacions de VizieR