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

HD 111930


Contenuti

Immagini

Carica la tua immagine

DSS Images   Other Images


Articoli relazionati

A catalog of bright calibrator stars for 200-m baseline near-infrared stellar interferometry
We present in this paper a catalog of reference stars suitable forcalibrating infrared interferometric observations. In the K band,visibilities can be calibrated with a precision of 1% on baselines up to200 meters for the whole sky, and up to 300 meters for some part of thesky. This work, extending to longer baselines a previous catalogcompiled by Bordé et al. (2002, A&A, 393, 183), isparticularl y well adapted to hectometric-class interferometers such asthe Very Large Telescope Interferometer (VLTI, Glindemann et al. 2003,Proc. SPIE, 4838, 89) or the CHARA array (ten Brummelaar et al. 2003,Proc. SPIE, 4838, 69) when one is observing well-resolved, high-surfacebrightness objects (K  8). We use the absolute spectro-photometriccalibration method introduced by Cohen et al. (1999, AJ, 117, 1864) toderive the angular diameters of our new set of 948 G8-M0 calibratorstars extracted from the IRAS, 2MASS and MSX catalogs. Angular stellardiameters range from 0.6 mas to 1.8 mas (median is 1.1 mas) with amedian precision of 1.35%. For both the northern and southernhemispheres, the closest calibrator star is always less than 10°away.

Sottometti un nuovo articolo


Link relazionati

  • - Nessun link trovato -
Sottometti un nuovo link


Membro dei seguenti gruppi:


Osservazione e dati astrometrici

Costellazione:Centauro
Ascensione retta:12h53m13.30s
Declinazione:-39°23'24.8"
Magnitudine apparente:6.867
Distanza:315.457 parsec
Moto proprio RA:-0.1
Moto proprio Dec:1.7
B-T magnitude:8.885
V-T magnitude:7.034

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 111930
TYCHO-2 2000TYC 7776-884-1
USNO-A2.0USNO-A2 0450-14853480
HIPHIP 62880

→ Richiesta di ulteriori cataloghi da VizieR