New old PN in the southern sky

Details New old PN in the southern sky New old PN in the southern sky

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243..236m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, March 15, 1990, p. 236-240.

Astronomy and Astrophysics

Astronomy

17

Planetary Nebulae, Southern Sky, Brightness Distribution, Cosmic Dust, Sky Surveys (Astronomy), Stellar Magnitude

Scientific paper

From a search of 417 ESO R and 112 SERC J film copies, 16 new planetary nebulas have been found. All of them are of very low surface brightness and range in angular diameter from 0.1 to 6 arcmin. They are highly evolved objects. The central stars have apparent magnitudes of m(j) between 17.5 and 22.0; for these estimates, a series of direct measurements of image diameters was carried out for stars of known magnitude to provide a calibration. Three of our nebulas are coincident with IRAS point sources; for two of them, several physical parameters could be derived.

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