67 citations · 143 across the 7 of their papers we have counts for
5 papers · 1 filter
On the Asymmetries of Extended X-ray Emission from Planetary Nebulae
Joel H. Kastner, Jingqiang Li, Saeqa D. Vrtilek +3
Chandra X-ray Observatory (CXO) images have revealed that the X-ray emitting regions of the molecule-rich young planetary nebulae (PNs) BD+30 3639 (BD+30) and NGC 7027 are much mor…
Kinematics of Molecular Hydrogen Emission from Pre-planetary Nebulae: RAFGL 2688 and RAFGL 618
Joel H. Kastner, David A. Weintraub, Ian Gatley +1
We present high spectral resolution maps of near-infrared molecular hydrogen emission from the bipolar pre-planetary nebulae RAFGL 2688 and RAFGL 618, obtained with the NOAO Phoeni…
Kinematics of Molecular Hydrogen Emission from Planetary and Pre-planetary Nebulae
Joel H. Kastner, Ian Gatley, David A. Weintraub
We report results from a program of high-resolution spectral mapping of rotational H_2 emission from bipolar planetary and pre-planetary nebulae. Long-slit spectra obtained with th…
The Optical/Near-IR Colors of Broad Absorption Line Quasars, Including the Candidate Radio-Loud BAL Quasar 1556+3517
Patrick B. Hall, Paul Martini, D. L. Depoy +1
A candidate radio-loud broad absorption line quasar (RLBAL) has been reported by Becker et al. (1997). We present JHK observations of this object and three other radio-detected BAL…
Nuclear bars and blue nuclei within barred spiral galaxies
M. Shaw, D. Axon, R. Probst +1
Multicolour near IR photometry for a sample of 32 large barred spiral galaxies is presented. By applying ellipse fitting techniques, we identify significant isophote twists with re…