69 citations · 257 across the 20 of their papers we have counts for
20 papers
Confirmation and characterization of Galactic planetary nebulae: insights from a spectroscopic study
D. A. Beleño-Molina, L. Olguín, L. F. Miranda +2
We present a spectroscopic investigation of 25 objects previously reported as possible Planetary Nebulae (PNe) in recent catalogs to obtain their physical properties and to establi…
Long and short term variability of the possible nascent planetary nebula IRAS 22568+6141: A late thermal pulse?
Roldán A. Cala, Luis F. Miranda, José F. Gómez +4
IRAS 22568+6141 has been classified as a low-ionisation planetary nebula (PN) and presents non-thermal radio continuum emission, which could be a signature of nascent PNe. We prese…
Morphokinematical study of the planetary nebula Me2-1: Unveiling its point-symmetric and unusual physical structure
L. F. Miranda, R. Vázquez, L. Olguín +2
(Abridged) We present narrow-band images in several emission lines, and high- and intermediate-resolution long-slit spectra of Me2-1 to investigate its morphology and 3D structure,…
The origin of the planetary nebula M 1-16. A morphokinematic and chemical analysis
M. A. Gómez-Muñoz, R. Vázquez, L. Sabin +4
We investigated the origin of the Planetary Nebula (PN) M 1-16 using narrow-band optical imaging, and high- and low-resolution optical spectra to perform a detailed morpho-kinemati…
The reactivation of water maser emission in the planetary nebula IRAS 18061--2505 through a born-again episode
L. F. Miranda, O. Suárez, L. Olguín +12
Water maser emitting planetary nebulae (HO-PNe) are believed to be among the youngest PNe. We present new optical narrow- and broad-band images, intermediate- and high-resoluti…
The morpho-kinematical structure and chemical abundances of the complex planetary nebula NGC 1514
Alba Aller, Roberto Vázquez, Lorenzo Olguín +2
We present high-resolution, long-slit optical spectra and images of the planetary nebula NGC1514. The position velocity maps of the [OIII] emission line reveal complex kinematics w…
A Submillimeter Polarization Analysis of Frosty Leo
L. Sabin, Q. Zhang, R. Vázquez +1
We present a polarimetric investigation of the protoplanetary nebula Frosty Leo performed with the Submillimeter Array. We were able to detect, in the low continuum level (peak at…
Measuring the Expansion and Age of the Nova Shell IPHASXJ210204.7+471015
E. Santamaría, M. A. Guerrero, G. Ramos-Larios +4
The parallax expansion and kinematics of a nova shell can be used to assess its age and distance, and to investigate the interaction of the ejecta with the circumstellar medium. Th…
The interaction of the halo around the butterfly planetary nebula NGC650-1 with the interstellar medium
G. Ramos-Larios, M. A. Guerrero, A. Nigoche-Netro +7
With its bright and wide equatorial waist seen almost edge-on (the butterfly body) and the faint and broad bipolar extensions (the butterfly wings), NGC650-1 is the archetypical ex…
Catching a Grown-Up Starfish Planetary Nebula: I. Morpho-Kinematical study of PC 22
L. Sabin, M. A. Gómez-Muñoz, M. A. Guerrero +9
We present the first part of an investigation on the planetary nebula (PN) PC 22 which focuses on the use of deep imaging and high resolution echelle spectroscopy to perform a deta…
Morpho-kinematics of the planetary nebula NGC 3242: an analysis beyond its multiple-shell structure
M. A. Gómez-Muñoz, M. W. Blanco Cárdenas, R. Vázquez +3
In this paper we present the results of optical high-resolution imaging and spectroscopy of the complex planetary nebula (PN) NGC~3242. Our study is based on the analysis of the na…
Millimeter polarisation of the protoplanetary nebula OH 231.8+4.2: A follow-up study with CARMA
L. Sabin, C. L. H. Hull, R. L. Plambeck +4
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 t…
The physical structure of planetary nebulae around sdO stars: Abell36, DeHt2, and RWT152
A. Aller, L. F. Miranda, L. Olguín +5
We present narrow-band Halpha and [OIII] images, and high-resolution, long-slit spectra of the planetary nebulae (PNe) Abell36, DeHt2, and RWT152 aimed at studying their morphology…
Submillimeter polarisation and magnetic field properties in the envelopes of proto-planetary nebulae CRL 618 and OH 231.8+4.2
L. Sabin, Q. Zhang, A. A. Zijlstra +5
We have carried out continuum and line polarisation observations of two Proto-planetary nebulae (PPNe), CRL 618 and OH 231.8+4.2, using the Submillimeter Array (SMA) in its compact…
Multiple outflows in the planetary nebula NGC 6058
P. F. Guillén, R. Vázquez, L. F. Miranda +4
We present narrow-band [O III]lambda5007 and H-alpha images, as well as long-slit high-resolution echelle spectra of the planetary nebula NGC 6058. Our data reveal that NGC 6058 is…
Detection of a multi-shell planetary nebula around the hot subdwarf O-type star 2MASS J19310888+4324577
A. Aller, L. F. Miranda, A. Ulla +8
(Abridged) The origin of hot subdwarf O-type stars (sdOs) remains unclear since their discovery in 1947. Among others, a post-Asymptotic Giant Branch (post-AGB) origin is possible…
New Galactic supernova remnants discovered with IPHAS
L. Sabin, Q. A. Parker, M. E. Contreras +7
As part of a systematic search programme of a 10-degree wide strip of the Northern Galactic plane we present preliminary evidence for the discovery of four (and possibly five) new…
Bubbles and Knots in the Kinematical Structure of the Bipolar Planetary Nebula NGC 2818
Roberto Vázquez
High-resolution Hubble Space Telescope (HST) archive imaging and high-dispersion spectroscopy are used to study the complex morphological and kinematical structure of the planetary…
High Resolution Spectroscopy of the Planetary Nebulae PM1-242, PM1-318 and PM1-322
L. F. Miranda, R. Vázquez, M. A. Guerrero +2
We have recently confirmed the planetary nebula (PN)nature of PM1-242, PM1-318 and PM1-322. Here we present high-resolution long-slit spectra of these three PNe in order to analyze…
The physical structure of the point-symmetric and quadrupolar planetary nebula NGC 6309
R. Vázquez, L. F. Miranda, L. Olguín +4
We analyse the point-symmetric planetary nebula NGC 6309 in terms of its three-dimensional structure and of internal variations of the physical conditions to deduce the physical pr…