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

HD 220574


Contingut

Imatges

Carregar la teva Imatge

DSS Images   Other Images


Articles Relacionats

Estimation of spectral classifications for bright northern stars with interesting Stromgren indices
The purpose of this investigation is to provide spectroscopic observerswith finding lists of potentially interesting objects. From anunpublished UVBY catalogue of 7026 northern stars (mostly brighter than8.3m) 1094 objects with interesting combinations of UVBY indices havebeen selected. Most stars with post-HD classifications have beenexcluded, as well as late F dwarfs belonging to the intermediatepopulation II. For the 792 remaining stars estimated spectralclassifications are given. The techniques and experience from a previouspaper dealing with southern stars have been utilized here. Among thepredicted spectral classifications are 40 OB stars; 262 Ap, Am, or Fmstars; 16 supergiants of types A to G; 110 bright giants of types A to K(class II); 156 double stars or objects with composite spectra; 26 lateF dwarfs; 91 weak-lined dwarf and giant stars of types F to K, includingearly F-type population II field blue stragglers; and a few possiblefield horizontal branch stars, lambda Bootis-type stars, and late-typehalo giants.

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:Cepheus
Ascensió Recta:23h23m59.49s
Declinació:+66°44'18.1"
Magnitud Aparent:8.863
Distancia:344.828 parsecs
Moviment propi RA:-4.6
Moviment propi Dec:-1.9
B-T magnitude:9.244
V-T magnitude:8.895

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 220574
TYCHO-2 2000TYC 4291-566-1
USNO-A2.0USNO-A2 1500-09718328
HIPHIP 115516

→ Sol·licitar més catàlegs i designacions de VizieR