lucadinoi1988
Ngc 7635
NGC 7635 (sometimes known as the Bubble Nebula or C 11) is a diffuse nebula visible in the constellation Cassiopeia, towards the border with Cepheus.
It can be identified very close to the open cluster M52, to the point that at low magnifications it appears in the same field of view; its main feature is a vacuum "bubble" surrounded by a nebula, visible with powerful instruments in the southern area of the object, caused by the stellar wind of the young central star, of magnitude 8.7. In an amateur telescope, however, the nebula is revealed well, which seems to end in the south with an arc shape.
It is a HII region, at the southern vertex of which there is an empty structure, caused by the pressure of the radiation of a central star of blue color (spectral class O), SAO 20575, of ninth magnitude, whose stellar wind reaches 2000 km /s;[1] it is a blue giant, which is also responsible for the ionization of the nebula, which emits its own light. Its distance from the Sun is estimated at 11,000 light-years.
Ngc 7635
NGC 7635 (sometimes known as the Bubble Nebula or C 11) is a diffuse nebula visible in the constellation Cassiopeia, towards the border with Cepheus.
It can be identified very close to the open cluster M52, to the point that at low magnifications it appears in the same field of view; its main feature is a vacuum "bubble" surrounded by a nebula, visible with powerful instruments in the southern area of the object, caused by the stellar wind of the young central star, of magnitude 8.7. In an amateur telescope, however, the nebula is revealed well, which seems to end in the south with an arc shape.
It is a HII region, at the southern vertex of which there is an empty structure, caused by the pressure of the radiation of a central star of blue color (spectral class O), SAO 20575, of ninth magnitude, whose stellar wind reaches 2000 km /s;[1] it is a blue giant, which is also responsible for the ionization of the nebula, which emits its own light. Its distance from the Sun is estimated at 11,000 light-years.