182 citations · 434 across the 9 of their papers we have counts for
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High-Velocity Interstellar Bullets in IRAS05506+2414: A Very Young Protostar
Raghvendra Sahai, Mark Claussen, Carmen Sánchez Contreras +2
We have made a serendipitous discovery of an enigmatic outflow source, IRAS 05506+2414 (hereafter IRAS 05506), as part of a multi-wavelength survey of pre-planetary nebulae (PPNs).…
Preplanetary Nebulae: An HST Imaging Survey and a New Morphological Classification System
Raghvendra Sahai, Mark Morris, Carmen Sánchez Contreras +1
Using the Hubble Space Telescope (HST), we have carried out a survey of candidate preplanetary nebulae (PPNs). We report here our discoveries of objects having well-resolved geomet…
Chemical and Photometric Evolution of Extended Ultraviolet Disks: Optical Spectroscopy of M83 (NGC5236) and NGC4625
A. Gil de Paz, B. F. Madore, S. Boissier +21
We present the results from the analysis of optical spectra of 31 Halpha-selected regions in the extended UV (XUV) disks of M83 (NGC5236) and NGC4625 recently discovered by GALEX.…
Adaptive Optics Imaging of IRAS 18276-1431: a bipolar pre-planetary nebula with circumstellar "searchlight beams" and "arcs"
C. Sanchez Contreras, D. Le Mignant, R. Sahai +2
We present high-angular resolution images of the post-AGB nebula IRAS18276-1431 (also known as OH17.7-2.0) obtained with the Keck II Adaptive Optics (AO) system in its Natural Guid…