scholarly journals Narrow-band imaging and a search for planetary nebulae

1999 ◽  
Vol 135 (3) ◽  
pp. 487-491 ◽  
Author(s):  
T. Rauch
2015 ◽  
Vol 11 (S317) ◽  
pp. 304-305
Author(s):  
Denise R. Gonçalves ◽  
T. Aparício-Villegas ◽  
S. Akras ◽  
A. Cortesi ◽  
M. Borges-Fernandes ◽  
...  

AbstractThe Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) is a narrow-band imaging, very wide field cosmological survey. It will last 5 years and will observe 8500 sq. deg. of the sky. There will be 54 contiguous narrow-band filters of 145Å FWHM, from 3,500 to 10,000Å. Two broad-band filters will be added at the extremes, UV and IR, plus the 3–g, r, and i– SDSS filters. Thus, J-PAS can be an important tool to search for new planetary nebulae (PNe) at the halo, increasing their numbers, because only 14 of them have been convincingly identified in the literature. Halo PNe are able to reveal precious information for the study of stellar evolution and the early chemical conditions of the Galaxy. The characteristic low continuum and intense emission lines of PNe make them good objects to be searched by J-PAS. Though covering a significantly smaller sky area, data from the ALHAMBRA survey were used to test our J-PAS strategy to search for PNe. Our first results are shown in this contribution.


1997 ◽  
Vol 180 ◽  
pp. 393-394
Author(s):  
K. Werner ◽  
K. Bagschik ◽  
T. Rauch ◽  
R. Napiwotzki

Time scales for post-AGB stellar evolution are still unclear. In order to study them it is useful to look for old PNe and compare nebula expansion and stellar evolutionary ages. We have selected very hot members from different white dwarf sub-classes. Many of them are objects recently discovered in the Hamburg-Schmidt Survey (Hagen et al. 1995). The sample includes three peculiar objects whose spectra show signatures of an extremely hot wind (≈ 106 K), namely absorption lines of ultra-high ionized metals, e.g. O VIII (Werner et al. 1995). A complete list is given in the table below. The search was performed by direct Hα narrow band imaging using a wide angle (20′ × 20′) CCD camera (WWFPP) attached to the Calar Alto 1.23m telescope (28.9.-3.10.1995).


2011 ◽  
Vol 7 (S283) ◽  
pp. 388-389
Author(s):  
Chih-Hao Hsia ◽  
Sun Kwok

AbstractWe report the optical and infrared studies of a sample of five new planetary nebulae (PNe) in the IPHAS and DSH catalogues. The PN status of these objects was confirmed by optical narrow-band imaging and low resolution spectroscopy. One object (IPHASX J195248.8+255359) is found to be a bipolar PN with faint Hα lobes and a bright core in [O iii].


2002 ◽  
Vol 54 (6) ◽  
pp. 883-889 ◽  
Author(s):  
Sadanori Okamura ◽  
Naoki Yasuda ◽  
Magda Arnaboldi ◽  
Kenneth C. Freeman ◽  
Hiroyasu Ando ◽  
...  

Endoscopy ◽  
2011 ◽  
Vol 43 (12) ◽  
Author(s):  
M López-Cerón ◽  
M Jimeno ◽  
C Rodríguez de Miguel ◽  
M Zabalza ◽  
V Alonso-Espinaco ◽  
...  

2013 ◽  
Vol 26 (01) ◽  
Author(s):  
S Al-Mammari ◽  
U Selvarajah ◽  
JE East ◽  
AA Bailey ◽  
B Braden

Endoscopy ◽  
2015 ◽  
Vol 47 (11) ◽  
Author(s):  
A Caballero Marcos ◽  
Ó Nogales Rincón ◽  
A Clemente Sánchez ◽  
G Pérez Rial ◽  
C Carbonell Blanco ◽  
...  

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
F. Prada ◽  
C. Pipolo ◽  
Massimiliano Bene ◽  
A. Saibene

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