Spectroscopy Study of the Planetary Nebulae H1-3

Details Spectroscopy Study of the Planetary Nebulae H1-3 Spectroscopy Study of the Planetary Nebulae H1-3

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006rmxac..26..165w&link_type=abstract

XI IAU Regional Latin American Meeting of Astronomy (Eds. L. Infante & M. Rubio) Revista Mexicana de Astronomía y Astrofísica (S

Astronomy and Astrophysics

Astronomy

Scientific paper

We have carried out a spectroscopy study of the planetary nebulae H1-3 (PN G 342.7+00.7) with the spectrograph REOSC at the 2.15-m telescope at CASLEO, Argentina. The measured wavelength of the strong line H α indicate a systematic velocity V_{LSR} = 8+/-10 km s^{-1}, the expansion velocity of the nebula is estimated in V_{exp} = 25km s^{-1}. The emission lines identified in our spectra are: HI (Hα, Hβ), HeI 6678, 7065, [OIII]λλ 4959, 5007, [NII]λλ 6548, 6583, [SII]λλ 6716, 6731. The electron densities were derived from the [SII] 6716/6731 ratio this vary from 1.3×10^{-3} in the central region to 0.6×10^{-3} along the major axis. The ratio [OIII]/Hβ shows a high exitation degree: class VII. On the other hand the ratio 5007/Hβ allows estimate an abundance O/H of 10^{-4}. Finally the low-excitation line [NII]6584 is strong compared to Hα, furthermore the ratio 6584/Hα increases towards the lobes.

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