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

TYC 919-783-1


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

Superflares on Ordinary Solar-Type Stars
Short-duration flares are well known to occur on cool main-sequencestars as well as on many types of ``exotic'' stars. Ordinarymain-sequence stars are usually pictured as being static on timescalesof millions or billions of years. Our Sun has occasional flaresinvolving up to ~1031 ergs that produce optical brighteningstoo small in amplitude to be detected in disk-integrated brightness.However, we identify nine cases of superflares involving1033-1038 ergs on normal solar-type stars. Thatis, these stars are on or near the main sequence, are of spectral classF8-G8, are single (or in very wide binaries), are not rapid rotators,and are not exceedingly young in age. This class of stars includes manyof those recently discovered to have planets as well as our own Sun, andthe consequences for any life on surrounding planets could be profound.For the case of the Sun, historical records suggest that no superflareshave occurred in the last two millennia.

Sunspots That Changed the World
Not Available

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:Bärenhüter
Right ascension:15h03m57.97s
Declination:+09°54'40.8"
Apparent magnitude:10.034
Proper motion RA:18.2
Proper motion Dec:-51.3
B-T magnitude:10.638
V-T magnitude:10.084

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 919-783-1
USNO-A2.0USNO-A2 0975-07697047
HIPHIP 73707

→ Request more catalogs and designations from VizieR