Inici     Sobreviure a l'Univers    
Services
    Per que Habitar     Millors Contribuents     Astro Fotografia     La Col·lecció     Fòrum     Blog New!     FAQ     Login  
→ Adopt this star  

HD 21807


Contingut

Imatges

Carregar la teva Imatge

DSS Images   Other Images


Articles Relacionats

Measurements of 258 radial velocities in two fields near Alpha Per
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1987A&AS...68..515F&db_key=AST

Identification of the optical counterpart of the X-ray source V0332 + 53
The optical counterpart of the X-ray transient V0332 + 53 is a star ofmagnitudes V = 15.13 and B - V = 2.31. The line H-alpha has a P-Cygniprofile with the absorption component at -1400 km/s. The possibility ofa 2.198 s optical periodicity, at 3.4 sigma level, is investigated.

A spectrophotometric survey of stars along the Milky Way. IV
In the present paper a catalogue of spectrophotometric quantities,spectral types, monochromatic magnitudes and colour equivalents is givenfor all stars brighter than the magnitude m4400 = 10.5 in aregion of the Milky Way in Perseus. No absorption is found for starscloser than about r = 100 pc. The absorbing clouds are situated atdistances closer than 1 kpc and at about 2.5 kpc in the local arm andthe Perseus arm, respectively. The space between the two arms is freefrom absorption. It is also concluded that the Perseus arm continuesbeyond l = 140 deg, containing not only hydrogen gas but also dust to atleast l = 150 deg), while the content of OB stars decreases abruptly atl = 140 deg.

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:Camelopardalis
Ascensió Recta:03h33m22.69s
Declinació:+52°57'09.4"
Magnitud Aparent:8.936
Distancia:211.416 parsecs
Moviment propi RA:-5.9
Moviment propi Dec:-11.3
B-T magnitude:9.275
V-T magnitude:8.964

Catàlegs i designacions:
Noms Propis
HD 1989HD 21807
TYCHO-2 2000TYC 3716-319-1
USNO-A2.0USNO-A2 1425-04389260
HIPHIP 16575

→ Sol·licitar més catàlegs i designacions de VizieR