Natal molecular cloud of SNR Kes 41. Complete characterisation

SUPAN, L.; CASTELLETTI, G.; SUPANITSKY, A. D.; BURTON, M. G.; WONG, G. F.; BRAIDING, C.

ASTRONOMY AND ASTROPHYSICS

EDP SCIENCES S A

Lugar: Paris; Año: 2018 vol. 619

0004-6361

Using high-resolution data of the 12CO and 13CO (J = 1-0) line emission from the Mopra Southern Galactic Plane CO Survey in conjunction with neutral hydrogen observations from the Southern Galactic Plane Survey (SGPS) and mid-infrared Spitzer data, we have explored the large-scale environment of the supernova remnant Kes 41. On the basis of these data, we identified for the first time the parent cloud of Kes 41 in its whole extension and surveyed the HII regions, masers, and the population of massive young stellar objects in the cloud. The whole unveiled giant cloud, located at the kinematic distance of 12.0 +/- 3.6 kpc, whose average total mass and size are 10-30 x 10^5 Msun and 26 arcmin, also shines in γ-rays, as revealed by the Large Area Telescope on board the Fermi satellite. We determined a high average proton density 500-1000 cm^-3 in the large molecular complex, of which protons from the neutral atomic and ionised gases comprise only 15%.