212 citations · 486 across the 10 of their papers we have counts for
10 papers
The mixed chemistry phenomenon in Galactic Bulge PNe
J. V. Perea-Calderon, D. A. Garcia-Hernandez, P. Garcia-Lario +2
We investigate the dual-dust chemistry (DDC) phenomenon in PNe and discuss reasons for its occurrence, by analyzing Spitzer/IRS spectra of a sample of 40 Galactic PNe among which 2…
Spitzer/IRS spectroscopy of high mass precursors to planetary nebulae
D. A. Garcia-Hernandez, J. V. Perea-Calderon, M. Bobrowsky +1
We present Spitzer/IRS observations of a small sample of heavily obscured IRAS sources displaying both the infrared and OH maser emission characteristic of OH/IR stars on the asymp…
Nebular emission lines in IRAS 17347-3139
F. M. Jiménez-Esteban, J. V. Perea-Calderón, O. Suárez +2
We report the detection of nebular emission lines in the optical and mid-infrared spectra of IRAS 17347-3139, a heavily obscured OH/IR star which may be rapidly evolving from the A…
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…
Two Subclasses of Proto-Planetary Nebulae: Model Calculations
M. Meixner, T. Ueta, M. Bobrowsky +1
We use detailed radiative transfer models to investigate the differences between the Star-Obvious Low-level-Elongated proto-planetary nebulae (SOLE PPNs) and DUst-Prominent Longitu…
The Circumstellar Matter Around OH44.8-2.3
M. Bobrowsky, B. W. Greeley, T. Ueta +1
I-band images of the OH maser source OH44.8-2.3 are presented. Having a well-determined distance, this object is shown to be very young and physically small, with an asymmetric com…