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

TYC 1993-2423-1


Contenuti

Immagini

Carica la tua immagine

DSS Images   Other Images


Articoli relazionati

Pulkovo compilation of radial velocities for 35495 stars in a common system.
Not Available

U, V, W velocity components for the old disk using radial velocities of 1295 stars in the three cardinal Galactic directions
New radial velocities are presented for 1295 stars chosen at random nearthe three cardinal Galactic directions of l = 180 deg, b = 0; l = 90deg, b = 0 deg; and b = 90 deg, giving the distribution in U, V, and W,respectively, from the radial velocities alone. The measurements weremade with the coude spectrograph of the Mount Wilson 100 in. Hookerreflector. The purpose of the program is to set limits on the densitynormalization in the solar neighborhood of the old thin disk, the oldthick disk, and the halo. Many more high-velocity stars are present inthe unbiased sample than expected from previous estimates of thenormalization. The data suggest the density ratios in the solarneighborhood to be about 90 percent, 10 percent, and about 0.5 percentfor the thin disk, thick disk, and halo populations, respectively.

Sottometti un nuovo articolo


Link relazionati

  • - Nessun link trovato -
Sottometti un nuovo link


Membro dei seguenti gruppi:


Osservazione e dati astrometrici

Costellazione:Chioma di Berenice
Ascensione retta:13h01m20.06s
Declinazione:+25°36'02.9"
Magnitudine apparente:9.055
Moto proprio RA:15.3
Moto proprio Dec:-11.7
B-T magnitude:10.163
V-T magnitude:9.147

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 1993-2423-1
USNO-A2.0USNO-A2 1125-06636190
HIPHIP 63549

→ Richiesta di ulteriori cataloghi da VizieR