Home     Per cominciare     Sopravvivere Nell'Universo    
Inhabited Sky
    News@Sky     Astro Foto     La collezione     Forum     Blog New!     FAQ     Stampa     Login  

HD 103322


Contenuti

Immagini

Carica la tua immagine

DSS Images   Other Images


Articoli relazionati

Effective temperature scale and bolometric corrections from 2MASS photometry
We present a method to determine effective temperatures, angularsemi-diameters and bolometric corrections for population I and II FGKtype stars based on V and 2MASS IR photometry. Accurate calibration isaccomplished by using a sample of solar analogues, whose averagetemperature is assumed to be equal to the solar effective temperature of5777 K. By taking into account all possible sources of error we estimateassociated uncertainties to better than 1% in effective temperature andin the range 1.0-2.5% in angular semi-diameter for unreddened stars.Comparison of our new temperatures with other determinations extractedfrom the literature indicates, in general, remarkably good agreement.These results suggest that the effective temperaure scale of FGK starsis currently established with an accuracy better than 0.5%-1%. Theapplication of the method to a sample of 10 999 dwarfs in the Hipparcoscatalogue allows us to define temperature and bolometric correction (Kband) calibrations as a function of (V-K), [m/H] and log g. Bolometriccorrections in the V and K bands as a function of T_eff, [m/H] and log gare also given. We provide effective temperatures, angularsemi-diameters, radii and bolometric corrections in the V and K bandsfor the 10 999 FGK stars in our sample with the correspondinguncertainties.

Possible Horizontal-Branch Stars at High Galactic Latitudes. II
Not Available

A finding-list of stars of spectral type F2 and earlier in a north galactic pole region.
Not Available

Sottometti un nuovo articolo


Link relazionati

  • - Nessun link trovato -
Sottometti un nuovo link


Membro dei seguenti gruppi:


Osservazione e dati astrometrici

Costellazione:Orsa Maggiore
Ascensione retta:11h53m57.40s
Declinazione:+44°44'05.6"
Magnitudine apparente:9.296
Moto proprio RA:12.8
Moto proprio Dec:-2
B-T magnitude:9.707
V-T magnitude:9.33

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 103322
TYCHO-2 2000TYC 3016-268-1
USNO-A2.0USNO-A2 1275-07997085
HIPHIP 58013

→ Richiesta di ulteriori cataloghi da VizieR