GS:100-02-41: a new HI supershell in the outer part of the Galaxy.

SUAD LAURA ANDREA; ARNAL E. MARCELO; CICHOWOLSKI SILVINA; TESTORI JUAN CARLOS

Greenoble

Taller; Seventh IRAM Millimeter Interferometry School; 2010

In this work we have made a multifrequency study of a newdetected HI supershell (GS100-02-41) in the outer part of the Galaxy. This feature is located at a distance of 4.6 +- 0.8 kpc from the Sun.  We have studied the interaction of GS100-2-41 with the intesrtellar medium looking for evidence of induced star formation.  Four HII regions are seen projected onto the HI structure.  An excelent correlation between the neutral hydrogen supershell (SC-HI) emission, 408 MHz and 1420 MHz continuum emission has been found. Furthermore there is good correlation between SC-HI and infrared (60 microns).We have used the all sky HI survey (Kalberla et al. 2005), The CGPS(Canadian Galactic Plane Survey), the 408 MHz (Haslam et al. 1982) and the1420 MHz (Reich P. and Reich W. 1986) surveys. Images at 8.25 microns  were taken by MSX satellite. IRIS 60 microns  was another survey used in this work.