SIMBAD references

1996PASP..108..980K - Publ. Astron. Soc. Pac., 108, 980-985 (1996/November-0)

Spectrophotometry of planetary nebulae. III. IIDS observations of compact nebulae.

KALER J.B., KWITTER K.B., SHAW R.A. and BROWNING L.

Abstract (from CDS):

We give spectral line intensities, electron temperatures, electron densities, and chemical compositions for 25 compact planetary nebulae observed with the IIDS at Kitt Peak. Several (Ha3-75, He2-15, K3-89, M1-16, M2-52, and M3-28) are found to be especially rich in helium and/or nitrogen (He/H > 0.15; N/O > 1). The results minimally confirm the correlation between N/O and He/H, but also confirm the intrinsic scatter int eh relation, as N-rich nebulae can be unenriched in He and vice versa.

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Journal keyword(s): Interstellar Medium and Nebulae

Simbad objects: 26

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