Poчetna     Да почнемо     To Survive in the Universe    
Inhabited Sky
    News@Sky     Астро Фотографије     Колекција     Форум     Blog New!     FAQ(Често постављана питања     Штампа     Улогуј се  

HD 42966


Садржај

Слике

Уплоадјуј своје слике

DSS Images   Other Images


Везани чланци

Empirical temperature calibrations for early-type stars
Three temperature calibrations of suitable photometric quantities havebeen derived for O and B stars. A sample of 120 stars with reliableT(eff.) determinations has been used for establishing each calibration.The different calibrations have been critically discussed and compared.Temperature determinations for 1009 program stars have been obtainedwith an accuracy of the order of 10 percent.

E(B-V) determination from an UV-visual two-colour diagram - O and B stars in the Catalogue of Stellar Ultraviolet Fluxes
For the O and B type stars in the Catalogue of Stellar UltravioletFluxes, an approach is presented which does not require a preciseknowledge of spectral type and luminosity class for deriving E(B-V)color excesses. The method is based on the use of an UV-visual two-colordiagram; galactic variations in the interstellar extinction law areanalyzed and fully taken into account. The results have been comparedwith those derived by using the differences between observed andintrinsic colors for stars with known spectral classification. The verygood agreement in a large number of cases (94 percent) demonstrates thatthe present approach permits the derivation of reliable color excessvalues for early-type stars even if only a rough spectral classificationis available.

Додај нови чланак


Линкови у сродству са темом

  • - Нема линкова -
Додај нови линк


Чланови следећих група \:


Посматрања и Астрометриски подаци

Сазвежђа:Велики пас
Ректацензија:06h13m07.39s
Deклинација:-15°29'36.2"
Apparent магнитуда:8.64
Даљина:487.805 parsecs
Proper motion RA:-11.4
Proper motion Dec:1.3
B-T magnitude:8.682
V-T magnitude:8.644

Каталог и designations:
Proper имена   (Edit)
HD 1989HD 42966
TYCHO-2 2000TYC 5933-1327-1
USNO-A2.0USNO-A2 0675-02798603
HIPHIP 29520

→ Захтевај још каталога од VizieR