Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...360.1107d&link_type=abstract
Astronomy and Astrophysics, Vol. 360, p.1107-1116
Astronomy and Astrophysics
Astrophysics
11
Stars: Early-Type, Stars: Formation, Ism: H Ii Regions, Ism: Individual Objects: Sh2-88B, Infrared: Stars
Scientific paper
We present a photometric study of the compact H II region Sh2-88B and its associated stellar cluster. The positions and JHK magnitudes are obtained for 125 stars over an 80''×80'' field centered on the region. The region has two components, called Sh2-88B1 and Sh2-88B2. B1 is a compact cometary H II region associated with a cluster containing several massive stars. The dominant exciting star, at the center of the cometary structure, has an ionizing radiation flux corresponding to a spectral type in the range O8.5V-O9.5V. It is highly reddened, with a visual extinction in the 30-42 mag range, and exhibits a near-IR excess. B1 has a simple morphology, with the ionized and neutral gas clearly separated. Its unidentified infrared band (UIB) emission, observed by ISOCAM in the 5-8.5 μm passband, comes from the photodissociation region at the periphery of the ionized gas. B2 is an ultracompact H II region whose exciting star, probably of spectral type later than B0.5V, is not detected; this indicates a visual extinction greater than 60 mag. A very steep and regular increase of the extinction from west to east is observed over the whole of Sh2-88B. Based on observations done at the Canada-France-Hawaii Telescope and at the Observatoire de Haute Provence. The CFHT is operated by the Centre National de la Recherche Scientifique of France, the National Research Council of Canada, and the University of Hawaii. Table 1 is available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html Fig. 3 is only available electronically with the On-Line publication at http://link.springer.de/link/service/00230/
Caplan James
Deharveng Lise
Nadeau Daniel
Zavagno Annie
No associations
LandOfFree
The stellar content of the compact H II region Sh2-88B does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The stellar content of the compact H II region Sh2-88B, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The stellar content of the compact H II region Sh2-88B will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-734266