The Chandra View of the Very Young Cluster IC 348
Thomas Preibisch & Hans Zinnecker
Contributed paper presented at the
12th Cambridge Workshop
"Cool Stars, Stellar Systems, and the Sun",
July 30th - August 3rd, 2001, Boulder, Colorado
We summarize some of the initial results of a deep (53 ksec)
X-ray imaging study
of the very young stellar cluster IC 348 with the
Advanced CCD Imaging Spectrometer on board the
Chandra X-Ray Observatory. Our image with a sensitivity limit
of 1 x10^28 erg/sec
reveals 215 X-ray sources. About 80% of all
cluster members known from optical/infrared spectroscopic studies
which have masses between ~ 0.15 M_sun and 2 M_sun
are detected as X-ray sources.
We discover X-ray emission at levels of ~ 10^28 erg/sec
from 7 of the known brown dwarfs and brown dwarf candidates in
The X-ray properties of the brown dwarfs are
similar to those of late M-type field stars, suggesting that the X-ray
emission of the sub-stellar objects originates from a hot corona.
For further information see our
second paper in the Astronomical Journal.
You can also get preprints of paper I
and paper II.
images of IC 348 can be found here.
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