Inici     Començant     Sobreviure a l'Univers    
Inhabited Sky
    News@Sky     Astro Fotografia     La Col·lecció     Fòrum     Blog New!     FAQ     Premsa     Login  

HD 38623


Contingut

Imatges

Carregar la teva Imatge

DSS Images   Other Images


Articles Relacionats

Observations of fuors. FU Orionis during 1984-1990 - Notable variation in the brightness decline rate
Results of FU Ori photometry on Mt. Maidanak during 1984-1990 areanalyzed. In December 1987, the fuor exhibited a stepwise decrease inbrightness by 0.1 mag, after which the decrease rate of FU Oribrightness grew threefold (0.07 mag/yr compared to 0.02 mag/yr during1961-1980), while the U-B color parameter decreased to +0.82 mag. Adistance modulus of 8.1 +/- 0.2 mag is confirmed on the basis ofphotometry of 65 stars in the neighborhood of FU Ori. UBVR magnitudes ofvariable and emission-line stars in the FU Ori field are also presented;brightness variations are suspected for seven stars.

Far-ultraviolet stellar photometry: A field in Orion
Far-ultraviolet photometry for 625 objects in Orion is presented. Thesedata were extracted from electrographic camera images obtained duringsounding rocket flights in 1975 and 1982. The 1975 images were centeredclose to the belt of Orion while the 1982 images were centeredapproximately 9 deg further north. One hundred and fifty stars fell inthe overlapping region and were observed with both cameras. Sixty-eightpercent of the objects were tentatively identified with known starsusing the SIMBAD database while another 24% are blends of objects tooclose together to separate with our resolution. As in previous studies,the majority of the identified ultraviolet sources are early-type stars.However, there are a significant number for which no such identificationwas possible, and we suggest that these are interesting objects whichshould be further investigated. Seven stars were found which were brightin the ultraviolet but faint in the visible. We suggest that some ofthese are nearby white dwarfs.

FUOR observations III. FU Orionis during 1984-1990. A remarkable change in the brightness decrease rate.
Not Available

Absolute Emission Line Intensities of Planetary Nebulae. II.
Not Available

Das bisherige Verhalten von FU Orionis. Mit 7 Textabbildungen
Not Available

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:Orion
Ascensió Recta:05h47m22.67s
Declinació:+08°32'54.2"
Magnitud Aparent:8.171
Distancia:290.698 parsecs
Moviment propi RA:-0.9
Moviment propi Dec:-3.5
B-T magnitude:8.112
V-T magnitude:8.167

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 38623
TYCHO-2 2000TYC 715-439-1
USNO-A2.0USNO-A2 0975-02014918
HIPHIP 27332

→ Sol·licitar més catàlegs i designacions de VizieR