66 citations · 259 across the 12 of their papers we have counts for
12 papers
Gas physical conditions and kinematics of the giant outflow Ou4
Romano L. M. Corradi, Nicolas Grosso, Agnès Acker +2
Ou4 is a recently discovered bipolar outflow with a projected size of more than one degree in the plane of the sky. It is apparently centred on the young stellar cluster -whose mos…
Discovery of New Faint Northern Galactic Planetary Nebulae
Agnes Acker, Henri M. J. Boffin, Nicolas Outters +4
We present the discovery of 6 nebular objects made by amateur astronomers. Four of these discoveries are clearly planetary nebulae (PNe), one is a possible PN, and another is a lik…
Newly Discovered Wolf-Rayet and Weak Emission-Line Central Stars of Planetary Nebulae
Kyle DePew, Quentin A. Parker, Brent Miszalski +5
We present spectra of 32 previously unpublished confirmed and candidate Wolf-Rayet ([WR]) and weak emission-line (WELS) central stars of planetary nebulae (CSPNe). Eighteen stars h…
Searching for Faint Planetary Nebulae Using the Digital Sky Survey
George H. Jacoby, Matthias Kronberger, Dana Patchick +8
Recent Halpha surveys such as SHS and IPHAS have improved the completeness of the Galactic planetary nebula (PN) census. We now know of ~3,000 PNe in the Galaxy, but this is far sh…
Chemical compositions and plasma parameters of planetary nebulae with Wolf-Rayet and wels type central stars
P. Girard, J. Koppen, A. Acker
Aims: Chemical compositions and other properties of planetary nebulae around central stars of spectral types [WC], [WO], and wels are compared with those of `normal' central stars,…
New insights on the complex planetary nebula Hen 2-113
Eric Lagadec, Olivier Chesneau, Mikako Matsuura +5
We report infrared observations of the planetary nebula Hen 2-113 obtained with VLT/NACO, VLTI/MIDI, VLT/ISAAC and TIMMI at the ESO 3.6m. Hen 2-113 exhibits a clear ring-like struc…