arXiv subjects

Myfanwy Bryce

Publications and source records attributed to Myfanwy Bryce.

2 recordsLinked to original sources

arXiv2003

New Planetary Nebulae in the Northern Galactic Plane

We present deep Halpha+[N II] CCD images of selected new Planetary Nebulae (PNe) discovered through an [O III] 5007 A emission line survey in the Galactic Bulge region with l > 0 deg. In total, we detected more than 200 objects, including 45 new PNe. Deep Halpha+[N II] CCD images as well as low resolution spectra were obtained for the new PNe in order to study them in detail. Their first morphological study suggests that most of them are round (60%), while 31% and 9% are elliptical and bipolar, respectively. 63% of the round PNe present ring-like structure while 37% are compact.

astro-ph↗

arXiv1999

The kinematics of the planetary nebula BD+30 3639

In this paper we describe the results of the first optical kinematic study of the planetary nebula BD+30 3639. This system has a central star of the Wolf-Rayet type and is believed to be fairly young. Emission line spectra were obtained at high spectral and spatial resolution using the Utrecht echelle spectrometer at the William Herschel Telescope. These spectra indicate that the main ionized shell of BD+30 3639 appears to be evolving in a more complex way than previously thought.

astro-ph↗