2010-09-10

jude_rook: Image of Andromeda Galaxy (Default)
2010-09-10 06:04 pm

K stars from 30 to 35 light years

Here are some more brief notes on K stars, these ones in the 30-35 light year range:

Gliese 432: a K0V star with an M companion over 100 AU distant, in Hydra, 32 light years away, between 4 and 6 billion years old.  ETA: Beichman et al give a metallicity around 42% of Sol’s.

Gliese 638: a K7V star in Hercules, 32 light years away.

12 Ophiuchi: a variable K2V star, 32 light years away, around the same metallicity as Sol but only 1 to 2 billion years old.

Gliese 75: a K0V star in Cassiopeia, 33 light years away, metallicity close to Sol’s or higher, between 2 and 4 billion years old.

HR 5256: a K3V star in Ursa Major, 33 light years away.

Gliese 453: a K5V star in Hydra, 33 light years away.  Metallicity is about half again that of Sol.

Gliese 117: a K1V star in Eridanus, 34 light years away, metallicity close to Sol’s, probably a variable star. 

Gliese 688: a K3V star with a companion of unknown type, in Ophiuchus, 34 light years away.