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

ω Oct


Ýçindekiler

Görüntüler

Resim Yükleyin

DSS Images   Other Images


Ýlgili Makaleler

The ROSAT all-sky survey catalogue of optically bright OB-type stars.
For the detailed statistical analysis of the X-ray emission of hot starswe selected all stars of spectral type O and B listed in the Yale BrightStar Catalogue and searched for them in the ROSAT All-Sky Survey. Inthis paper we describe the selection and preparation of the data andpresent a compilation of the derived X-ray data for a complete sample ofbright OB stars.

The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1995ApJS...99..135A&db_key=AST

The local system of early type stars - Spatial extent and kinematics
Published uvby and H-beta photometric data and proper motions arecompiled and analyzed to characterize the structure and kinematics ofthe bright early-type O-A0 stars in the solar vicinity, with a focus onthe Gould belt. The selection and calibration techniques are explained,and the data are presented in extensive tables and graphs and discussedin detail. The Gould belt stars of age less than 20 Myr are shown togive belt inclination 19 deg to the Galactic plane and node-lineorientation in the direction of Galactic rotation, while the symmetricaldistribution about the Galactic plane and kinematic properties (purecircular differential rotation) of the belt stars over 60 Myr oldresemble those of fainter nonbelt stars of all ages. The unresolveddiscrepancy between the expansion observed in the youngest nearby starsand the predictions of simple models of expansion from a point isattributed to the inhomogeneous distribution of interstellar matter.

Radial velocities of bright southern stars. I - 139 B-type HR and FK stars
Radial velocity determinations for 139 southern B stars in the BrightStar, FK4, and FK4 Supplement catalogues and for 53 bright southernlate-type stars are presented, based on coudespectrograms taken with theESO 1.5 m telescope at La Silla. The programs, observations,measurements, and reductions are described. Among the data presented arethe visual magnitude, spectral class, mean error, E/T variabilityparameter, velocity of interstellar lines, and rotation class.

Spectrophotometry of bright southern stars
Careful intermediate resolution (10-18 nm) multicolor photometricmeasurements on 28 bright stars in the southern winter sky have beencompleted at wavelengths from 339 to 700 nm. The spectra are tied to thecalibration of Alpha Lyr through secondary standards. Relative spectraare accurate to better than 0.01 mag over the entire range and it isestimated that the absolute spectra are accurate to 0.02 mag

Erratum - Discordances Between SAO and HD Numbers for Bright Stars
Not Available

Intermediate band photometry of early-type stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977PASP...89..205E&db_key=AST

Yeni bir Makale Öner


Ýlgili Baðlantýlar

  • - Baðlantý Bulunamadý -
Yeni Bir Baðlantý Öner


sonraki gruplarýn üyesi:


Gözlemler ve gökölçümü verileri

Takýmyýldýz:Sekizlik
Sað Açýklýk:15h11m08.30s
Yükselim:-84°47'15.0"
Görünürdeki Parlaklýk:5.91
Uzaklýk:97.656 parsek
özdevim Sað Açýklýk:3.9
özdevim Yükselim:1.6
B-T magnitude:5.832
V-T magnitude:5.861

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
Bayerω Oct
HD 1989HD 131596
TYCHO-2 2000TYC 9513-948-1
USNO-A2.0USNO-A2 0000-01265640
BSC 1991HR 5557
HIPHIP 74296

→ VizieR 'den daha fazla katalog ve tanýmlama isteyin