315 datasets found

We apply a method, described in Gorny et al. (1997, Cat. ), to derive the masses of 125 central stars of planetary nebulae (PN). This method is self-consistent and...

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A new determination of the radial abundance gradients of O/H, Ne/H, S/H, and Ar/H is made for disk planetary nebulae, (PN), that is, those objects of Peimbert types I, II, and...

All modern determinations of chemical abundances of He/H, O/H, C/H, N/H and Ne/H in 277 galactic Planetary Nebulae have been used to update our knowledge of the chemical...

Spectroscopic observations, plasma diagnostics and chemical composition of 15 non-type I planetary nebulae (PNe) in the Large Magellanic Cloud (LMC) are reported. Abundances of...

IRAS sources having IR colours typical of planetary nebulae and located outside the Galactic bulge were observed in the radio continuum at 6cm with the Australian Compact Array...

The photometric UBV observations of V4334 Sgr during 1996-1998 are presented. V4334 Sgr is the nucleus of a planetary nebula during the last helium flash of the shell source and...

We discuss the infrared (IR) (1.25-5microns) photometry of eight planetary nebulae performed in 1999-2006. For all of the nebulae under study, we have firmly established IR...

We have examined central stars of planetary nebulae and symbiotic stars found in the MACHO Galactic bulge database to look for variability. We found four central stars of...

We analyze the spatial orientation of a homogeneous sample of 440 elongated Planetary Nebulae (PNe) in order to determine the orientation of their apparent major axis with...

A detailed high spectral resolution study of the spectrum of IC 418 is made for the region 3650{AA} to 10050{AA}, using the Hamilton echelle spectrograph of Lick Observatory,...

List of all new planetary nebulae discovered by French amateurs (from 2016, Lastr, 91, 26) and nebulae in the mid-infrared (from 2016, LAstr, 91 36). Cone search capability for...

List of new planetary nebulae discovered by French amateurs. Cone search capability for table J/other/LAstr/80.42/table1 (Planerary nebulae candidates discovered by French...

List of all new planetary nebulae discovered by French amateurs. Cone search capability for table J/other/LAstr/136.58/table1 (List of planetary nebulae candidates) Cone search...

List of all new planetary nebulae discovered by French amateurs. Cone search capability for table J/other/LAstr/125.54/table1 (List of planetary nebulae candidates) Cone search...

La recherche d'objets non references dans le ciel est devenue une activite courante dans le milieu amateur. Les cibles convoitees sont de differentes natures: cometes, etoiles...

List of all new planetary nebulae discovered by French amateurs. Cone search capability for table J/other/LAstr/102.46/table1 (List of planetary nebulae candidates) Cone search...

We present an analysis of a new 120 deg^2^ radio continuum image of the Large Magellanic Cloud (LMC) at 888MHz with a bandwidth of 288MHz and beam size of 13.9"x12.1", from the...

Planetary nebulae (PNe) are strong H{alpha} line emitters and a lot of new PNe discoveries have been made by the SuperCOSMOS AAO/UKST H{alpha} Survey (SHS) and the Isaac Newton...

We present medium-resolution K-band long-slit spectroscopy of 29 true, likely, possible, and candidate Galactic Plane planetary nebulae (PNe) from the UWISH2 survey, many of...