El remanente de supernova CTB80 y su entorno observado en la línea del Hidrógeno neutro

CASTELLETTI G., VELÁZQUEZ P., DUBNER G.

Rosario, Santa Fe, Argentina, 21 al 24 de septiembre

Congreso; 43a Reunión Anual de la Asociación Argentina de Astronomia; 1999

We have performed a study of the neutral Hydrogen (HI) distribution around the enigmatical supernova remnant CTB80 (G69.0+2.7), based on archive data obtained by Hartmann and Burton (1997) using the 25 m Dwingeloo Radiotelescope (The Netherlands) with angular resolution of 36´. The HI images were combined with a high resolution image of CTB80 in radio continuum at 1460 MHz, obtained with the radio interferometer VLA (NRAO, Socorro, New Mexico). The analysis of these data in HI, in spite of its limited angular resolution, provides an excellent means of studying the large scale distribution of the atomic gas, which is a previous step to the detailed understanding of the effects produced by the interaction of a supernova remnant with the interstellar medium. The study of the distribution of this gas over a large velocity interval, -54.6 km/s < v < 37.1 km/s and 71.1 km/s < v < 74.2 km/s, made it possible to detect structures that have likely influenced the complex morphology of CTB80. Such structures become evident in the intervals: [-19.6;-10] km/s, [-7.2;0.0] km/s, [10.3;14.4] km/s and [71.1;74.2] km/s.