Publications (6)
From BRAVA to BAaDE: A New Kinematic Survey of the Bulge AGB
R. Michael Rich, Adam Trapp, Mark R. Morris +4
We consider interesting results on the kinematics of the bulge, beginning with Mould's (1983) measurement of the velocity dispersion of the late M giants in the bulge, and carrying…
A molecular-line study of the interstellar bullet engine IRAS 05506+2414
Raghvendra Sahai, Chin-Fei Lee, Carmen Sanchez Contreras +3
We present interferometric and single-dish molecular line observations of the interstellar bullet-outflow source IRAS 05506+2414, whose wide-angle bullet spray is similar to the Or…
Proper Motion of Water Masers Near NGC1333-SVS13
Alwyn Wootten, Kevin Marvel, Mark Claussen +1
VLBA observations of water masers toward the region of NGC1333 near SVS13, the driving source for the well-known Herbig-Haro objects HH7-11, are reported. Maser emission was observ…
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…
Understanding Mass-Loss and the late Evolution of Intermediate Mass Stars: Jets, Disks, Binarity, Dust and Magnetic Fields
Raghvendra Sahai, Bruce Balick, Eric Blackman +7
Almost all stars in the 1-8 Msun range evolve through the Asymptotic Giant Branch (AGB), preplanetary nebula (PPN) and planetary nebula (PN) evolutionary phases. Most stars that le…