Publications (9)
Triggered massive-star formation on the borders of Galactic HII regions. IV- Star formation at the periphery of Sh2-212
L. Deharveng, B. Lefloch, S. Kurtz +4
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…
Triggered star formation on the borders of the Galactic HII region RCW 82
M. Pomares, A. Zavagno, L. Deharveng +6
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 p…
Triggered massive-star formation on the borders of Galactic HII regions. III. Star formation at the periphery of Sh2-219
L. Deharveng, B. Lefloch, F. Massi +4
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 Sh2-2…
Triggered massive-star formation on the borders of Galactic HII regions. II. Evidence for the collect and collapse process around RCW 79
A. Zavagno, L. Deharveng, F. Comeron +4
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 lo…
Sequential star formation at the periphery of the HII regions Sh 217 and Sh 219
L. Deharveng, A. Zavagno, L. Salas +3
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…
Triggered massive-star formation at the border of the HII region Sh 104
L. Deharveng, B. Lefloch, A. Zavagno +4
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 regu…
Triggered massive-star formation on the borders of Galactic HII regions. I. A search for `collect and collapse' candidates
L. Deharveng, A. Zavagno, J. Caplan
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, t…
Star formation around RCW 120, the perfect bubble
L. Deharveng, A. Zavagno, F. Schuller +3
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…
Three-Dimensional Segmentation of Vesicular Networks of Fungal Hyphae in Macroscopic Microscopy Image Stacks
P. Saponaro, W. Treible, A. Kolagunda +4
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…