IJAA  Vol.3 No.2 , June 2013
Distances Scale Determination for a Planetary Nebula in Galactic Bulge
ABSTRACT

Planetary Nebulae (PN) distances represent the fundamental parameter for the determination the physical properties of the central star of PN. In this paper the distances scale to Planetary Nebulae in the Galactic bulge were calculated related to previous distances scales. The proposed distance scale was done by recalibrated the previous distance scale technique CKS/D82. This scale limited for nearby PN (D ≤ 3.5 kpc), so the surface fluxes less than other distance scales. With these criteria the results showed that the proposed distance scale is more accurate than other scales related to the observations for adopted sample of PN distances, also the limit of ionized radius (Rio) for all both optically thick and optically thin in the rang of sizes (0.45 > Rio (pc) > 0.03).


Cite this paper
S. Abdullah, N. Ali and M. Sallih, "Distances Scale Determination for a Planetary Nebula in Galactic Bulge," International Journal of Astronomy and Astrophysics, Vol. 3 No. 2, 2013, pp. 81-86. doi: 10.4236/ijaa.2013.32008.
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