Astrophysics (index)about

G-type star

(G, G dwarf, G-class star)
(stars similar to the Sun)

A G-type star (i.e., G-class star or G dwarf), is a star of the G-class, i.e., the spectral class for stars of around a solar mass and solar radius, i.e., the Sun is of this type. They burn up their hydrogen in about ten billion years. They have weak hydrogen absorption lines. Characteristics:

yellowconventional color
5500-6000Ksurface temperature
.85-1.1radius(solar)
.65-1mass(solar)
2.6-4.7absolute magnitude(visual)
.5-1.2bolometric luminosity(solar)
9-18 billion yearsmain-sequence lifetime
7.6%abundance

(star type,spectral type)
http://en.wikipedia.org/wiki/Stellar_classification
WaveLFreqPhoton
Energy
  
387nm775THz3.3eVbeginG-type star
527nm569THz2.4eVendG-type star

Referenced by:
calcium (Ca)
FGK star
55 Cancri e (55 Cnc e)
51 Pegasi b (51 Peg b)
G band
G-dwarf problem
HD 209458 b
HD 80606 b
Kepler Telescope
Morgan classification
solar mass (MSun)
multiplicity fraction
spectral class
Sun
Transiting Exoplanet Survey Satellite (TESS)
Wilson-Bappu effect

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