Geysers in the Lagoon: new Herbig-Haro objects in M8

Details Geysers in the Lagoon: new Herbig-Haro objects in M8 Geysers in the Lagoon: new Herbig-Haro objects in M8

2007-06-15

arxiv.org/abs/0706.2378v1

Astronomy and Astrophysics

Astrophysics

9 pages, 6 postscript figures (one in color). Accepted, Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20066081

Aims: We search for direct evidence of ongoing star formation by accretion in the Lagoon Nebula (M8), using optical wide-field narrow-band imaging obtained at La Silla Observatory. Methods: We examine [SII] and Halpha images for line-emission features that could be interpreted as signatures of outflow activity of the exciting sources. Results: We discover five new Herbig-Haro objects, study in detail their morphology and attempt to identify their potential driving sources among the population of T Tauri stars and embedded sources in the surroundings. Conclusions: The results reported here conclusively demonstrate the existence of very young stars going through the accreting phase in the M8 region.

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