Thin Shell Formation Time and [OIII] Line in Fast Wind Bubble

Details Thin Shell Formation Time and [OIII] Line in Fast Wind Bubble Thin Shell Formation Time and [OIII] Line in Fast Wind Bubble

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pkas...11...91c&link_type=abstract

Publications of the Korean Astronomical Society, vol.11, no.1, p.91-107

Astronomy and Astrophysics

Astronomy

Scientific paper

We determine analytically the onset of thin-shell formation time of fast wind bubble with power-law energy injection E_in = E_0 t^s, and power-law ambient density structure, rho_0(r) = rho(bar)(r/r(bar))^-w. Thin-shell formation time, t_sf can be estimated by minimizing the total time elapsed before the complete cooling of shocked gas. For uniform medium (w = 0) and constant energy injection (s = 1), the onset of shell formation is found to be at t_sf = 5.2x10e3 yr, which agrees quite well with the results of FCT 1D numerical calculation. We solve the line transfer problem with previous result derived by numerical calculation in order to calculate line profile of [OIII] (lambda= 5007 A) forbidden line. In general, radiative outer shell causes the formation of double peaked line profile. Each peak corresponds to approaching and receding shells with large velocities. Our line profiles show good agreements with observation of expanding shell structure.

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