Issue |
A&A
Volume 400, Number 2, March III 2003
|
|
---|---|---|
Page(s) | 575 - 583 | |
Section | Interstellar and circumstellar matter | |
DOI | https://doi.org/10.1051/0004-6361:20021833 | |
Published online | 03 March 2003 |
Mid-IR observations of small stellar clusters surrounding Herbig AeBe stars*
1
Osservatorio Astrofisico di Arcetri, INAF, Largo E. Fermi 5, 50125 Firenze, Italy
2
European Southern Observatory, Santiago, Chile
Corresponding author: E. Habart, habart@arcetri.astro.it
Received:
23
September
2002
Accepted:
28
November
2002
We present TIMMI2 observations at 10 μm of 12 fields centered
on known Herbig AeBe (HAeBe) stars.
We detected sources (in addition to the HAeBe star) in five fields,
three of which are associated with early B stars. Using complementary near-IR and
optical data, we estimate that the detected
sources are young, embedded (AV
mag), intermediate-mass
objects (~
). In four objects
the 10 μm emission can be accounted for by
a circumstellar disk, while in 2 cases (possibly 3) there is evidence that the
objects are still in an earlier stage of evolution (Class I).
These results confirm the association of the early B Herbig stars with rather
rich clusters, as well as their very young age.
If our estimates of the stellar parameters are confirmed,
this would be the largest
sample so far of embedded, intermediate-mass objects available for further studies.
Key words: stars: formation / stars: pre-main sequence / infrared: stars / open clusters and associations: general / circumstellar matter
© ESO, 2003
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