90 citations · 533 across the 30 of their papers we have counts for
12 papers · 1 filter
Multiple and Precessing Collimated Outflows in the Planetary Nebula IC 4634
M. A. Guerrero, L. F. Miranda, A. Riera +6
With its remarkable double-S shape, IC 4634 is an archetype of point-symmetric planetary nebulae (PN). In this paper, we present a detailed study of this PN using archival HST WFPC…
Non-LTE dust nucleation in sub-saturated vapors
Davide Lazzati
We use the kinetic theory of nucleation to explore the properties of dust nucleation in sub-saturated vapors. Due to radiation losses, the sub-critical clusters have a smaller temp…
Proper Motions of the Jets in the Region of HH 30 and HL/XZ Tau. Evidence for a Binary Exciting Source of the HH 30 Jet
Guillem Anglada, Rosario Lopez, Robert Estalella +3
We present [SII] images of the HH 30 and HL/XZ Tau region obtained at two epochs, as well as long-slit optical spectroscopy of the HH 30 jet. We measured proper motions of about 10…
The Structure of the Inner HH 34 Jet from Optical Integral Field Spectroscopy
Tracy L. Beck, A. Riera, A. C. Raga +1
We present high spatial resolution optical integral field spectroscopy of a collimated Herbig-Haro jet viewed nearly edge-on. Maps of the line emission, velocity centroid, and velo…
3D Spectroscopy of Herbig-Haro objects
R. Lopez, S. F. Sanchez, B. Garcia-Lorenzo +5
HH 110 and HH 262 are two Herbig-Haro jets with rather peculiar, chaotic morphology. In the two cases, no source suitable to power the jet has been detected along the outflow, at o…
The interaction of a jet-like pulse with a wind from a stellar companion
A. Riera, A. C. Raga, J. Alcolea
We present numerical simulations of the interaction between a collimated, bipolar ``pulse'' ejected from a star and a continuous wind ejected from a stellar companion. We explore t…
3-D Kinematics of the HH 110 jet
Rosario Lopez, Robert Estalella, Alejandro C. Raga +3
We present new results on the kinematics of the jet HH 110. New proper motion measurements have been calculated from [SII] CCD images obtained with a time baseline of nearly fiftee…
K 4-47: a planetary nebula excited by photons and shocks
D. R. Goncalves, A. Mampaso, R. L. M. Corradi +3
K 4-47 is an unusual planetary nebula composed of a compact high-ionization core and a pair of low-ionization knots. Long-slit medium-resolution spectra of the knots and core are a…
Time-dependent ejection velocity model for the outflow of Hen 3--1475
P. F. Velazquez, A. Riera, A. C. Raga
We present 2D axisymmetric and 3D numerical simulations of the proto-planetary nebula Hen 3-1475, which is characterized by a remarkably highly collimated optical jet, formed by a…
The 3-Dimensional Structure of HH 32 from GMOS IFU Spetroscopy
Tracy L. Beck, A. Riera, A. C. Raga +1
We present new high resolution spectroscopic observations of the Herbig-Haro object HH 32 from System Verification observations made with the GMOS IFU at Gemini North Observatory.…
Fabry-Perot observations of the HH 110 jet
A. Riera, A. C. Raga, B. Reipurth +4
We have obtained a Halpha position-velocity cube from Fabry-Perot interferometric observations of the HH 110 flow. We analyze the results in terms of anisotropic wavelet transforms…
The high-velocity outflow in the proto-planetary nebula Hen 3-1475
A. Riera, P. Garcia-Lario, A. Manchado +2
The proto-planetary nebula Hen 3-1475 shows a remarkable highly collimated optical jet with an S-shaped string of three pairs of knots and extremely high velocities. We present her…