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

TYC 4492-2416-1


Contenuti

Immagini

Carica la tua immagine

DSS Images   Other Images


Articoli relazionati

New Brown Dwarf Companions to Young Stars in Scorpius-Centaurus
We present the discoveries of three faint companions to young stars inthe Scorpius-Centaurus region, imaged with the NICI instrument on GeminiSouth. We have confirmed all three companions through common propermotion tests. Follow-up spectroscopy has confirmed two of them, HIP65423 B and HIP 65517 B, to be brown dwarfs, while the third, HIP 72099B, is more likely a very low mass star just above the hydrogen burninglimit. The detection of wide companions in the mass range of ~40-100 Mjup complements previous work in the same region, reportingdetections of similarly wide companions with lower masses, in the rangeof ~10-30 M jup. Such low masses near the deuterium burninglimit have raised the question of whether those objects formed likeplanets or stars. The existence of intermediate objects as reported herecould represent a bridge between lower-mass companions and stellarcompanions, but in any case demonstrate that mass alone may not providea clear-cut distinction for the formation of low-mass companions tostars.Based on Gemini observations from programs GS-2011A-Q-44, GS-2012A-Q-18,and GS-2012A-DD-6, and on ESO observations from program 089.C-0422(A).

Sottometti un nuovo articolo


Link relazionati

  • - Nessun link trovato -
Sottometti un nuovo link


Membro dei seguenti gruppi:


Osservazione e dati astrometrici

Costellazione:Cefeo
Ascensione retta:00h25m29.93s
Declinazione:+75°59'17.8"
Magnitudine apparente:9.961
Moto proprio RA:-2.9
Moto proprio Dec:-0.3
B-T magnitude:10.356
V-T magnitude:9.994

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 4492-2416-1
USNO-A2.0USNO-A2 1650-00095277
HIPHIP 2012

→ Richiesta di ulteriori cataloghi da VizieR