Home     Getting Started     To Survive in the Universe    
Inhabited Sky
    News@Sky     Astro Photo     The Collection     Forum     Blog New!     FAQ     Press     Login  

TYC 8141-2668-1


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

A study of visual double stars with early type primaries. IV Astrophysical data
Astrophysical parameters (MK class, color excess, absolute magnitude,distance, effective temperature, mass, and age) are derived fromcalibrations of the uvby-beta indices for the members of 253 doublestars with O or B type primaries and faint secondaries. The photometricspectral classification is compared to the MK classes, and the agreementis very good. The derived data together with spectroscopic and JHKL dataare used for deciding which pairs are likely to be physical and whichare optical, and it is shown that 98 (34 percent) of the secondaries arelikely to be members of physical systems. For 90 percent of the physicalpairs the projected separation between the components is less than25,000 AU. A majority of the physical secondaries are late-type stars,and 50 percent of them are contracting towards the zero-agemain-sequence. Also presented are new uvby-beta data for 43 secondariesand a computer program for determining astrophysical parameters fromuvby-beta data.

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:とも座
Right ascension:07h32m45.02s
Declination:-49°12'30.2"
Apparent magnitude:9.993
Proper motion RA:-5.7
Proper motion Dec:6.2
B-T magnitude:10.088
V-T magnitude:10.001

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 8141-2668-1
USNO-A2.0USNO-A2 0375-03611325
HIPHIP 36678

→ Request more catalogs and designations from VizieR