842 citations · 6.8k across the 80 of their papers we have counts for
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A search for diffuse bands in the circumstellar envelopes of post-AGB stars
R. Luna, N. L. J. Cox, M. A. Satorre +3
In this work we present the results of a systematic search for diffuse bands (DBs, hereafter) in the circumstellar envelopes of a carefully selected sample of post-AGB stars. We co…
Spitzer Infrared Spectrograph Observations of Magellanic Cloud Planetary Nebulae: the nature of dust in low metallicity circumstellar ejecta
L. Stanghellini, P. Garcia-Lario, D. A. Garcia-Hernandez +5
We present 5 - 40 micron spectroscopy of 41 planetary nebulae (PNe) in the Magellanic Clouds, observed with the Infrared Spectrograph on board the Spitzer Space Telescope. The spec…
The Infrared Astronomical Mission AKARI
H. Murakami, H. Baba, P. Barthel +90
AKARI, the first Japanese satellite dedicated to infrared astronomy, was launched on 2006 February 21, and started observations in May of the same year. AKARI has a 68.5 cm cooled…
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…
High resolution spectroscopy of the high velocity hot post-AGB star LS III +52 24 (IRAS 22023+5249)
G. Sarkar, M. Parthasarathy, P. Garcia-Lario
Aims: To investigate the first high resolution optical spectrum of the B-type star, LS III +52 24, identified as the optical counterpart of the hot post-AGB candidate IRAS 22023+52…
Rubidium-Rich Asymptotic Giant Branch Stars
D. A. Garcia-Hernandez, P. Garcia-Lario, B. Plez +3
A long debated issue concerning the nucleosynthesis of neutron-rich elements in Asymptotic Giant Branch (AGB) stars is the identification of the neutron source. We report intermedi…
Near-IR/optical monitoring programme of the 'Arecibo sample of OH/IR stars'
Francisco Jiménez-Esteban, Dieter Engels, Pedro García-Lario
We performed a near-IR/optical monitoring programme from 1999 to 2005 in order to study the variability properties of the 'Arecibo sample of OH/IR stars' (periods, amplitudes, and…
Lithium and zirconium abundances in massive Galactic O-rich AGB stars
D. A. Garcia-Hernandez, P. Garcia-Lario, B. Plez +4
Lithium and zirconium abundances (the latter taken as representative for s-process enrichment) are determined for a large sample of massive Galactic O-rich AGB stars, for which hig…
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…
A spectroscopic atlas of post-AGB stars and planetary nebulae selected from the IRAS Point Source Catalogue
O. Suarez, P. Garcia-Lario, A. Manchado +3
Aims: We study the optical spectral properties of a sample of stars showing far infrared colours similar to those of well-known planetary nebulae. The large majority of them were u…
Near-IR variability properties of a selected sample of AGB stars
F. M. Jiménez-Esteban, P. García-Lario, D. Engels +1
We present the results of a near-infrared monitoring programme of a selected sample of stars, initially suspected to be Mira variables and OH/IR stars, covering more than a decade…
Spitzer Spectra of Magellanic Cloud PNe
L. Stanghellini, P. Garcia Lario, A. Manchado +4
Planetary nebulae (PNe) in the Magellanic Clouds (LMC, SMC) offer a unique opportunity to study both the population and evolution of low- and intermediate-mass stars in an environm…
Properties of Post-AGB stars
P. Garcia-Lario
A review is presented of the most relevant results obtained in the last few years on this rare class of astronomical sources. Multi-wavelength analysis of an increasing number of p…
Properties of the Scorpii Circumstellar Disk from Continuum Modeling
A. C. Carciofi, A. S. Miroshnichenko, A. V. Kusakin +8
We present optical and infrared photometric observations of the Be binary system Sco, obtained in 2000--2005, mid-infrared (10 and m) photometry and optical…
High resolution optical spectroscopy of IRAS 09425-6040 (=GLMP 260)
D. A. Garcia-Hernandez, C. Abia, A. Manchado +1
We present high resolution optical spectroscopic observations of IRAS 09425-6040, a peculiar, extremely red, C-rich AGB star showing prominent O-rich dust features in its ISO infra…
Revealing the mid-infrared emission structure of IRAS 16594-4656 and IRAS 07027-7934
D. A. Garcia-Hernandez, A. Manchado, P. Garcia-Lario +3
TIMMI2 diffraction-limited mid-infrared images of a multipolar proto-planetary nebula IRAS 16594-4656 and a young [WC] elliptical planetary nebula IRAS 07027-7934 are presented. Th…
An infrared study of galactic OH/IR stars. II. The `GLMP sample' of red oxygen-rich AGB stars
F. M. Jiménez-Esteban, P. García-Lario, D. Engels +1
We present optical and near-infrared finding charts taken from the DSS and 2MASS surveys of 94 IRAS sources selected from the GLMP catalogue (Garc\'ıa-Lario 1992), and accurate ast…
On the evolutionary connection between AGB stars and PNe
F. M. Jiménez-Esteban, P. García-Lario, D. Engels
The `O-rich AGB sequence' is a sequence of colours describing the location of O-rich AGB stars in the IRAS two-colour diagram [12]--[25] vs [25]--[60]. We propose an evolutionary s…
Why are massive O-rich AGB stars in our Galaxy not S-stars?
D. A. Garcia-Hernandez, P. Garcia-Lario, B. Plez +4
We present the main results derived from a chemical analysis carried out on a large sample of galactic O-rich AGB stars using high resolution optical spectroscopy (R~40,000-50,000)…
The use of Planetary Nebulae precursors in the study of Diffuse Interstellar Bands
P. Garcia-Lario, R. Luna, M. A. Satorre
We present the first results of a systematic search for Diffuse Interstellar Bands in a carefully selected sample of post-AGB stars observed with high resolution optical spectrosco…
Stellar evolution and the 'O-rich AGB sequence'
F. M. Jimenez-Esteban, D. Engels, P. Garcia-Lario
The `O-rich AGB sequence' is a well defined area occupied by oxygen-rich AGB stars (OH/IR) in the IRAS two-colour diagram [12]-[25] vs [25]-[60]. This sequence is interpreted in te…
From ISO to Spitzer: a new view of the AGB-PN transition phase
P. Garcia-Lario, J. V. Perea Calderon
We present a novel classification scheme for stars evolving in the transition phase between the Asymptotic Giant Branch (AGB) to the Planetary Nebula (PN) stage based on the result…
The Mid-IR Emission Structure of IRAS 16594-4656
D. A. Garcia-Hernandez, A. Manchado, P. Garcia-Lario +3
We report TIMMI2 diffraction-limited mid-IR images of the multipolar PPN IRAS 16594-4656. By using the Lucy-Richardson deconvolution algorithm we recover a two-peaked morphology in…
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…