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![Table 2 . Ha+[N n] fluxes.](profile/Gc-Anupama/publication/237133729/figure/tbl2/AS:669562357960708@1536647514430/Ha-N-n-fluxes_Q320.jpg)
We report results of a search for optical emission line gas in the Hickson compact group 62. From narrow band (Hα ) imaging observations we estimate 104 M⊙ of ionized hydrogen gas within the central regions of three of the galaxies in the group. There has been considerable interest in this group since ROSAT detected an extended halo of diffuse X-ra...
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Context 1
... V is the volume of the emitting region, e is the filling factor and a^ a is the effective recombination coefficient for Ha emissivity (Osterbrock 1989), is the electron density, and rc H is the hydrogen density. Assuming that the gas is fully ionized and n p = n H =n e we estimate the mass of ion- ized hydrogen in each of the three galaxies (Table 3) . The estimated mass depends on an accurate esti- mate of the electron density in the nebula. ...
Context 2
... 0.1 (typical x-ray estimated density for the hot gas in the central region), r H = 10 4 K we estimate an electron density of n e =l00 cm -3 for T X =10 7 K, the estimated-temperature for the gas in the central region (PB). In Table 3 we list the estimated masses of ionized hydrogen for three possible values of n e using Ha fluxes in the equation above. ...
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