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gptkbp:instanceOf
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gptkb:stellar_classification
|
|
gptkbp:color
|
gptkb:orange
|
|
gptkbp:commonIn
|
second most common main sequence stars
|
|
gptkbp:compared_to_M-type_stars
|
hotter and more massive
|
|
gptkbp:compared_to_Sun
|
cooler and less massive
|
|
gptkbp:discoveredBy
|
19th century spectral classification
|
|
gptkbp:end_state
|
gptkb:white_dwarf
|
|
gptkbp:example
|
gptkb:Epsilon_Indi
gptkb:Alpha_Centauri_B
gptkb:61_Cygni_A
|
|
gptkbp:fraction_of_Milky_Way_stars
|
~12%
|
|
gptkbp:giant_branch
|
gptkb:K_III
|
|
gptkbp:giant_name
|
K giant
|
|
gptkbp:habitable_zone_distance
|
0.3–1.3 AU
|
|
gptkbp:host_exoplanets
|
yes
|
|
gptkbp:luminosity_class
|
III (giant)
V (main sequence)
|
|
gptkbp:magnetic_activity
|
moderate
|
|
gptkbp:main_sequence
|
gptkb:K_V
|
|
gptkbp:main_sequence_lifetime
|
15–30 billion years
|
|
gptkbp:main_sequence_luminosity
|
0.08–0.6 solar luminosities
|
|
gptkbp:main_sequence_name
|
K dwarf
|
|
gptkbp:metallicity
|
varied
|
|
gptkbp:notable_for
|
long stable lifetimes
|
|
gptkbp:potential_for_habitable_planets
|
high
|
|
gptkbp:range
|
0.6–0.9 solar masses
|
|
gptkbp:rotation_rate
|
slower than O, B, A stars
|
|
gptkbp:spectral_lines
|
strong metallic lines
|
|
gptkbp:spectralType
|
K
|
|
gptkbp:subspecies
|
K0, K1, K2, K3, K4, K5, K6, K7, K8, K9
|
|
gptkbp:surfaceGravity
|
varies by class
|
|
gptkbp:temperature
|
3900–5200 K
|
|
gptkbp:UV_radiation
|
lower than G-type stars
|
|
gptkbp:進化
|
become red giants
|
|
gptkbp:bfsParent
|
gptkb:Population_I
gptkb:main_sequence
|
|
gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
K-type stars
|