Home     Baþlangýç     Evrende yaþayabilmek için    
Inhabited Sky
    News@Sky     Gökyüzü görüntüsü     Koleksiyon     Forum     Blog New!     SSS     Basýn     Giriþ  

HD 157786


Ýçindekiler

Görüntüler

Resim Yükleyin

DSS Images   Other Images


Ýlgili Makaleler

An IRAS survey of main sequence B, A, and F stars
Results are presented of an IRAS survey of main-sequence B, A, and Fstars, based on three primary sources as a data base: theBernacca-Perinotto Catalog of Stellar Rotational Velocities, theMichigan Spectral Catalog, and the Bright Star Catalog. The stars in thedata base are divided into four categories: (1) main-sequence singlestars, (2) main-sequence close binary stars, (3) spectrally peculiarstars such as Am, Ap, Fm, and Fp stars, and (4) subgiants. It is foundthat about 20 percent of main-sequence single stars show an IR colorexcess in at least one of the 12, 25, or 60 micron IRAS bands, while theother three groups do not show any statistically significant percentageof IR color excess stars. It is also found that stars with large (v sini) values are more likely to show color excesses at IRAS wavelengthsthan stars with small (v sin i) values.

Yeni bir Makale Öner


Ýlgili Baðlantýlar

  • - Baðlantý Bulunamadý -
Yeni Bir Baðlantý Öner


sonraki gruplarýn üyesi:


Gözlemler ve gökölçümü verileri

Takýmyýldýz:Sunak
Sað Açýklýk:17h28m23.55s
Yükselim:-54°01'16.4"
Görünürdeki Parlaklýk:7.137
Uzaklýk:204.918 parsek
özdevim Sað Açýklýk:2.6
özdevim Yükselim:6.6
B-T magnitude:7.386
V-T magnitude:7.158

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 157786
TYCHO-2 2000TYC 8728-879-1
USNO-A2.0USNO-A2 0300-31714320
HIPHIP 85501

→ VizieR 'den daha fazla katalog ve tanýmlama isteyin