Discovery of CI around 51 Ophiuchi.

Details Discovery of CI around 51 Ophiuchi. Discovery of CI around 51 Ophiuchi.

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...321l..39l&link_type=abstract

Astronomy and Astrophysics, v.321, p.L39-L42

Astronomy and Astrophysics

Astrophysics

8

Stars: Individual: 51 Oph, Circumstellar Matter, Planetary Systems, Line: Profiles

Scientific paper

We present the discovery of cold CI in the 51 Oph environment, with a column density of N=5x10^13^cm^-2^ and temperature T=~20K. This is the first β Pic-like star other than β Pic with simultaneous detection of cold dust and gas. The CI/infrared continuum ratio and consequently the gas/dust ratio are similar to the β Pic ones. Since CI has a very short lifetime, it must be continuously replenished, probably by molecular gas dissociation. This provides evidence for the presence of evaporating bodies. A new upper limit on CO content is also given.

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