LINKING CHEMISTRY AND KINEMATICS IN THE MOLECULAR GAS OF PROTOPLANETARY NEBULA M1-92 [PDF]
Proceedings of the 2023 International Symposium on Molecular Spectroscopy, 2023 . Protoplanetary nebulae (PPNe) play a significant role in the evolution of low and intermediate mass stars, serving as the link between the asymptotic giant branch (AGB) and planetary nebulae phases.
Katherine J. Gold, L. M. Ziurys
openalex +2 more sources
Oxygen Isotope Constraints on the Importance of Photochemical Processing in Protoplanetary Disks
The Astronomical JournalObservations have revealed evidence of photochemical processing in protoplanetary disks. This processing occurs in the photon-dominated layer, the optically thin regions of the disk high above the disk midplane. It remains unclear, however, how much this
Fred J. Ciesla +3 more
doaj +2 more sources
Millimetre polarization of the protoplanetary nebula OH 231.8+4.2: a follow-up study with CARMA [PDF]
, 2015 In order to investigate the characteristics and influence of the magnetic field in evolved stars, we performed a follow-up investigation of our previous submillimeter analysis of the proto-planetary nebula (PPN) OH 231.8+4.2 (Sabin et al.
L. Sabin +6 more
openalex +3 more sources
ALMA Observations of Asymmetric Molecular Gas Emission from a Protoplanetary Disk in the Orion Nebula [PDF]
, 2017 We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of molecular line emission from d216-0939, one of the largest and most massive protoplanetary disks in the Orion Nebula Cluster.
Samuel M. Factor +9 more
openalex +3 more sources
HST STIS UV Spectroscopic Observations of the Protoplanetary Nebula Hen3-1475∗ † [PDF]
Astrophysical Journal, 2018 We present UV spectra of the protoplanetary nebula (pPN) Hen 3-1475 obtained with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope (HST). Our deep, low-dispersion spectroscopy enables monochromatic imaging of Hen 3-1475
Xuan Fang +3 more
openalex +3 more sources
Early science with the Large Millimeter Telescope: molecules in the extreme outflow of a protoplanetary nebula [PDF]
, 2017 Extremely high velocity emission likely related to jets is known to occur in some proto-Planetary Nebulae. However, the molecular complexity of this kinematic component is largely unknown.
Arturo I. Gómez-Ruiz +13 more
openalex +3 more sources
Discovery of Radio Recombination Lines from Proplyds in the Orion Nebula Cluster
The Astrophysical JournalWe present new Atacama Large Millimeter/submillimeter Array observations that, for the first time, detect hydrogen and helium radio recombination lines from a protoplanetary disk.
Ryan D. Boyden +7 more
doaj +2 more sources
Size-selective concentration of chondrules and other small particles in protoplanetary nebula turbulence [PDF]
, 2000 Size-selective concentration of particles in a weakly turbulent protoplanetary nebula may be responsible for the initial collection of chondrules and other constituents into primitive body precursors. This paper presents the main elements of this process
Barge P. +23 more
core +2 more sources
Particle confinement in a non-axisymmetric protoplanetary nebula
Open Astronomy, 1999 Fuente Marcos C. de la, Barge P.
doaj +2 more sources
DETECTION OF C60IN THE PROTOPLANETARY NEBULA IRAS 01005+7910 [PDF]
, 2011 We report the first detection of buckminsterfullerene (C60) in a protoplanetary nebula. The vibrational transitions of C60 at 7.0, 17.4, and 18.9 μm are detected in the Spitzer/Infrared Spectrograph spectrum of IRAS 01005+7910.
Yong Zhang, Sun Kwok
openalex +3 more sources