New planetary nebulae in the Galactic bulge region with l &gt; 0 - II

Boumis, P.; Akras, S.; Xilouris, E. M.; Mavromatakis, F.; Kapakos, E.; Papamastorakis, I.; Goudis, C.

doi:10.1111/j.1365-2966.2006.10048.x

Cited by 27 publications

(33 citation statements)

References 22 publications

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“…Comparison of deep on-band and off-band CCD imaging (Beaulieu, Dopita & Freeman 1999;Boumis et al 2003Boumis et al , 2006 has found additional PN in the Galactic bulge. This technique has been used extremely successfully by Jacoby and co-workers for the discovery of numerous extragalactic PN (e.g.…”

Section: Image Comparison Techniquesmentioning

confidence: 99%

Planetary Nebulae: Observational Properties, Mimics and Diagnostics

Frew

Parker

2010

Publ. – Astron. Soc. Aust

183

262

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Abstract:The total number of true, likely and possible planetary nebulae (PN) now known in the Milky Way is nearly 3000, double the number known a decade ago. The new discoveries are a legacy of the recent availability of wide field, narrowband imaging surveys, primarily in the light of H-alpha. In this paper, we summarise the various PN discovery techniques, and give an overview of the many types of objects which mimic PN and which appear as contaminants in both Galactic and extragalactic samples. Much improved discrimination of classical PN from their mimics is now possible based on the wide variety of high-quality multiwavelength data sets that are now available. We offer improved taxonomic and observational definitions for the PN phenomenon based on evaluation of these better diagnostic capabilities. However, we note that evidence is increasing that the PN phenomenon is heterogeneous, and PN are likely to be formed from multiple evolutionary scenarios. In particular, the relationships between some collimated symbiotic outflows and bipolar PN remain uncertain.

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Section: Image Comparison Techniquesmentioning

confidence: 99%

Planetary Nebulae: Observational Properties, Mimics and Diagnostics

Frew

Parker

2010

Publ. – Astron. Soc. Aust

183

262

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“…An additional ∼450 PNe were then added from a large number of literature sources (e.g. Acker et al 1992Acker et al , 1996Kohoutek 1994Kohoutek , 2002Zanin et al 1997;Beaulieu et al 1999;Cappellaro et al 2001;Jacoby & Van de Steene 2004;Boumis et al 2003Boumis et al , 2006Górny 2006). As a further check we made use of updated coordinates provided by Kerber et al (2003) and SIMBAD to ensure no objects were missed.…”

Section: Planetary Nebulae Catalogue Constructionmentioning

confidence: 99%

Binary planetary nebulae nuclei towards the Galactic bulge

Miszalski

Acker

Moffat³

et al. 2009

A&A

215

310

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Binarity has been hypothesised to play an important, if not ubiquitous, role in the formation of planetary nebulae (PNe). Yet there remains a severe paucity of known binary central stars required to test the binary hypothesis and to place strong constraints on the physics of the common-envelope (CE) phase of binary stellar evolution. Large photometric surveys offer an unrivalled opportunity to efficiently discover many binary central stars. We have combined photometry from the OGLE microlensing survey with the largest sample of PNe towards the Galactic bulge to systematically search for new binaries. A total of 21 periodic binaries were found thereby more than doubling the known sample. The orbital period distribution was found to be best described by CE population synthesis models when no correlation between primary and secondary masses is assumed for the initial mass ratio distribution. A comparison with post-CE white dwarf binaries indicates both distributions are representative of the true post-CE period distribution with most binaries exhibiting periods less than one day. A close binary fraction of 12−21% is derived and is the first robust and independent validation of the previous 10−15% estimate. This suggests that binarity is not a precondition for the formation of PNe and that close binaries do not play a dominant role in the shaping of nebular morphologies. Systematic effects and biases of the survey are discussed with implications for future photometric surveys.

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“…Many surveys have been made in the past in order to discover new PNe (Boumis et al 2003 and references therein -Paper I, Boumis et al 2006-Paper II, Parker et al 2006 and references therein).…”

Section: Introductionmentioning

confidence: 97%

New Planetary Nebulae towards the Galactic bulge

Boumis

Akras

Hoof

et al. 2006

IAU

Self Cite

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New Planetary Nebulae (PNe) were discovered through an [O iii] 5007Å emission line survey in the Galactic bulge region with l > 0 • . We detected 240 objects, including 44 new PNe. Deep Hα+[N ii] CCD images as well as low resolution spectra were obtained for the new PNe in order to study them in detail. Preliminary photo-ionization models of the new PNe with Cloudy resulted in first estimates of the physical parameters and abundances. They are compared to the abundances of Galactic PNe.

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New planetary nebulae in the Galactic bulge region with l > 0 - II

Cited by 27 publications

References 22 publications

Planetary Nebulae: Observational Properties, Mimics and Diagnostics

Planetary Nebulae: Observational Properties, Mimics and Diagnostics

Binary planetary nebulae nuclei towards the Galactic bulge

New Planetary Nebulae towards the Galactic bulge

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