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 62525


Садржај

Слике

Уплоадјуј своје слике

DSS Images   Other Images


Везани чланци

Spot modelling of the flare M4.5 dwarf YZ CMi
We report on a photometric study of the flare M4.5 dwarf YZ CMi as basedon photoelectric observations from the seasons 1972/73, 1979/80 and1996/97. We suggest spot activity to explain the light and colourcurves. Spots are generally 500K cooler than the surrounding photosphereand there are basically two solutions available for the observations:high latitude spot changing slightly basic properties such as radius andlatitude or active near-equatorial (belt-like) centers represented bythree spots. However, the activity centers changed in longitudes(˜180o). The typical spot coverage (inclinationi=60o) is 10-15% and 5% for the season 1996/97 or ˜25%for the stellar inclination i=75o. As a by-product, V curveand (V-I) and (V-K) indexes turn out to be most promising in modellingof M-type stars as far as present calibrations are concerned.

Monitoring of spotted RS CVn and BY Dra type stars. I. Simultaneous optical and infrared photometry
UBV(RI)cJHK photometry of 6 active stars, collected at theSouth African Astronomical Observatory in 1996 and 1997, is presented.The light and colour curves, which are compared with those observed atprevious epochs, show significant variation in their wave-likemodulation and in their maximum brightness.

Coordinated Ultraviolet, Optical and Radio Observations of RS CVn and Flare Stars
Not Available

Додај нови чланак


Линкови у сродству са темом

  • - Нема линкова -
Додај нови линк


Чланови следећих група \:


Посматрања и Астрометриски подаци

Сазвежђа:Мали пас
Ректацензија:07h44m31.16s
Deклинација:+03°28'17.2"
Apparent магнитуда:8.125
Proper motion RA:-4.8
Proper motion Dec:-0.4
B-T magnitude:9.251
V-T magnitude:8.218

Каталог и designations:
Proper имена   (Edit)
HD 1989HD 62525
TYCHO-2 2000TYC 183-2048-1
USNO-A2.0USNO-A2 0900-05350599

→ Захтевај још каталога од VizieR