V
Valentin Bujarrabal
Researcher at Spanish National Research Council
Publications - 277
Citations - 5708
Valentin Bujarrabal is an academic researcher from Spanish National Research Council. The author has contributed to research in topics: Stars & Nebula. The author has an hindex of 41, co-authored 268 publications receiving 5246 citations. Previous affiliations of Valentin Bujarrabal include One America News Network & University of Chile.
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Journal ArticleDOI
Mass, linear momentum and kinetic energy of bipolar flows in protoplanetary nebulae
TL;DR: In this paper, the authors studied the CO emission from protoplanetary nebulae (PPNe) and identified a slowly expanding shell (represented in the spectra by a central core) and a fast outflow (corresponding to the line wings).
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A 12 CO (J =1 ! 0) and (J =2 ! 1) atlas of circumstellar envelopes of AGB and post-AGB stars
TL;DR: In this paper, the authors presented the results of a 12 CO (J = 1!0) and (J 2!1) survey on a sample of 46 objects classi- ed as AGB and post-AGB stars.
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Extended rotating disks around post-AGB stars
TL;DR: In this article, the mass of the CO-emitting gas and its extent were derived for a group of binary post-AGB stars that show conspicuous near-infrared (NIR) excess, which is usually assumed to arise from hot dust in very compact possibly rotating disks.
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The Chandra X-Ray Survey of Planetary Nebulae (CHANPLANS): Probing Binarity, Magnetic Fields, and Wind Collisions
Joel H. Kastner,Rodolfo Montez,Bruce Balick,David J. Frew,Brent Miszalski,Raghvendra Sahai,Eric G. Blackman,You-Hua Chu,O. De Marco,Alejandro Frank,Martín A. Guerrero,José Alberto López,Valerie Rapson,Albert A. Zijlstra,Ehud Behar,Valentin Bujarrabal,Romano L. M. Corradi,Romano L. M. Corradi,Jason Nordhaus,Quentin A. Parker,Quentin A. Parker,C. Sandin,Detlef Schönberner,Noam Soker,Jennifer L. Sokoloski,Matthias Steffen,Toshiya Ueta,Eva Villaver +27 more
TL;DR: The first phase of the Chandra X-Ray Observatory survey (CHANPLANS) was conducted by as discussed by the authors, yielding four detections of diffuse X-ray emission and nine detection of Xray-luminous point sources at the central stars of these objects.
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Mapping the 12CO J = 1-0 and J = 2-1 emission in AGB and early post-AGB circumstellar envelopes. I. The COSAS program, first sample
A. Castro-Carrizo,G. Quintana-Lacaci,R. Neri,Valentin Bujarrabal,Fredrik L. Schöier,J. M. Winters,Hans Olofsson,Michael Lindqvist,J. Alcolea,R. Lucas,Michael Grewing +10 more
TL;DR: The COSAS (CO Survey of late AGB stars) project as discussed by the authors is a project to map and analyze the 12CO J = 1−0 and J = 2−1 line emission in a representative sample of circumstellar envelopes around AGB and post-AGB stars.