Geysers in the Lagoon: new Herbig-Haro objects in M 8*
Departamento de Física, Universidad de La Serena, Benavente 980, La Serena, Chile e-mail: firstname.lastname@example.org
2 Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, and Instituto de Astrofísica La Plata, Paseo del Bosque S/N, B1900FWA, La Plata, Argentina e-mail: email@example.com
Accepted: 15 June 2007
Aims.We search for direct evidence of ongoing star formation by accretion in the Lagoon Nebula (M 8), using optical wide-field narrow-band imaging obtained at La Silla Observatory.
Methods.We examine  and Hα 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 M 8 region.
Key words: ISM: Herbig-Haro objects / ISM: jets and outflows / stars: formation
© ESO, 2007