2 NEW EVOLVED NEIGHBORING PLANETARY-NEBULAE IN AQUILA

Citation
A. Ali et J. Pfleiderer, 2 NEW EVOLVED NEIGHBORING PLANETARY-NEBULAE IN AQUILA, Monthly Notices of the Royal Astronomical Society, 289(3), 1997, pp. 589-591
Citations number
13
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
00358711
Volume
289
Issue
3
Year of publication
1997
Pages
589 - 591
Database
ISI
SICI code
0035-8711(1997)289:3<589:2NENPI>2.0.ZU;2-Z
Abstract
In the course of a search for faint new non-stellar objects in the Nor thern Galactic Plane, two neighbouring planetary nebula (PNe) candidat es have been detected on film copies of the POSS II. Whereas the morph ology of the smaller of the two objects (empty set = 15 arcsec) is typ ical for PNe, the nature of the larger one (34 x 18 arcsec(2)) defied an even provisional classification, on its photographic appearance alo ne. Optical spectra, however, allowed both sources, which are separate d by 20 arcmin only, to be classified as highly obscured PNe. Both neb ulae obviously are rather old, i.e. they are evolved representatives o f their kind.