More H_2_O maser in J-type carbon stars

Details More H_2_O maser in J-type carbon stars More H_2_O maser in J-type carbon stars

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...285..497e&link_type=abstract

Astronomy and Astrophysics 285, 497-502 (1994)

Astronomy and Astrophysics

Astrophysics

20

Stars: Carbon, Maser, Stars: Agb, Post-Agb

Scientific paper

The detection of five new H_2_O masers in J-type carbon stars is reported, confirming the suggestion made earlier that they have an oxygen-rich environment. This increases the sample of peculiar carbon stars of this type to 13. The high maser detection rate suggests that perhaps all J-type carbon stars with IRAS flux ratios S_25_/S_12_ > 0.45 have oxygen-rich environment. Two of the new stars show large radial velocities, stimulating the suggestion that these carbon stars belong to the metal-weak halo population.

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