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of 574
pro vyhledávání: '"Caplan J"'
Automating the extraction and quantification of features from three-dimensional (3-D) image stacks is a critical task for advancing computer vision research. The union of 3-D image acquisition and analysis enables the quantification of biological res
Externí odkaz:
http://arxiv.org/abs/1704.02356
We take advantage of the very simple morphology of RCW 120 -- a perfect bubble -- to understand the mechanisms triggering star formation around an HII region and to establish what kind of stars are formed there. We present 870 microns observations of
Externí odkaz:
http://arxiv.org/abs/0902.0903
Autor:
Pomares, M., Zavagno, A., Deharveng, L., Cunningham, M., Jones, P., Kurtz, S., Russeil, D., Caplan, J., Comeron, F.
We are engaged in a multi-wavelength study of several Galactic HII regions that exhibit signposts of triggered star formation on their borders, and where the collect and collapse process could be at work. When addressing the question of triggered sta
Externí odkaz:
http://arxiv.org/abs/0812.2618
Aims: We wish to establish whether sequential star formation is taking place at the periphery of the Galactic HII region Sh2-212. Methods: We present CO millimetre observations of this region obtained at the IRAM 30-m telescope to investigate the dis
Externí odkaz:
http://arxiv.org/abs/0803.4152
Context. Massive-star formation triggered by the expansion of HII regions. Aims. To understand if sequential star formation is taking place at the periphery of the HII region Sh2-219. Methods. We present 12CO(2-1) line observations of this region, ob
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608465
Publikováno v:
Astron.Astrophys.446:171-184,2006
We present SEST-SIMBA 1.2-mm continuum maps and ESO-NTT SOFI JHK images of the Galactic HII region RCW 79. The millimetre continuum data reveal the presence of massive fragments located in a dust emission ring surrounding the ionized gas. The two mos
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509289
Young massive stars or clusters are often observed at the peripheries of HII regions. What triggers star formation at such locations? Among the scenarios that have been proposed, the `collect and collapse' process is particularly attractive because i
Externí odkaz:
http://arxiv.org/abs/astro-ph/0412602
Autor:
Deharveng, L., Lefloch, B., Zavagno, A., Caplan, J., Whitworth, A. P., Nadeau, D., Martin, S.
Publikováno v:
Astron.Astrophys.408:L25-L28,2003
We present millimetre-line imaging of the Galactic HII region Sh 104. We show that it is surrounded by a ring of molecular gas and dust. Four large molecular condensations are regularly spaced around the ring. These condensations are themselves fragm
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309018
Publikováno v:
Astron.Astrophys. 399 (2003) 1135-1146
The HII regions Sh 217 and Sh 219 are textbook examples of a Stromgren sphere surrounded by an annular photodissociation region (PDR). The annular PDR is observed in both the 21 cm atomic hydrogen emission and the dust (PAH) emission near 8 micron (M
Externí odkaz:
http://arxiv.org/abs/astro-ph/0212383
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