SIMBAD references

2014A&A...563A..63H - Astronomy and Astrophysics, volume 563A, 63-63 (2014/3-1)

Discovery of new low-excitation planetary nebulae.

HSIA C.-H. and ZHANG Y.

Abstract (from CDS):

We report a multi-wavelength study of four new planetary nebula (PN) candidates selected from the INT/WFC Photometric Hα Survey of the Northern Galactic Plane (IPHAS) and Deep Sky Hunter (DSH) catalogues. We present mid-resolution optical spectra of these PNs. The PN status of our sample was confirmed by optical narrow-band images and mid-resolution spectra. Based on the locations of these objects in the log(Hα/[N II]) versus log(Hα/[S II]) diagnostic diagram, we conclude that these sources are evolved low-excitation PNs. The optical and infrared appearances of these newly discovered PNs are discussed. Three of the new nebulae studied here are detected in infrared and have low infrared-to-radio flux ratios, probably suggesting that they are evolved. Furthermore, we derive the dynamical ages and distances of these nebulae and study the spectral energy distribution for one of them with extensive infrared archival data.

Abstract Copyright:

Journal keyword(s): surveys - planetary nebulae: general - stars: AGB and post-AGB

VizieR on-line data: <Available at CDS (J/A+A/563/A63): pns.dat list.dat sp/* fits/*>

Simbad objects: 13

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2014A&A...563A..63H and select 'bookmark this link' or equivalent in the popup menu


2021.01.21-16:57:02

© Université de Strasbourg/CNRS

    • Contact