97 citations · 1.3k across the 112 of their papers we have counts for
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Wolf-Rayet stars in the Antennae unveiled by MUSE
V. M. A. Gómez-González, Y. D. Mayya, J. A. Toalá +3
We present the analysis of archival Very Large Telescope (VLT) Multi Unit Spectroscopic Explorer (MUSE) observations of the interacting galaxies NGC 4038/39 (a.k.a. the Antennae) a…
Detailed studies of IPHAS sources -- I. The disrupted late bipolar IPHASX J193718.6+202102
L. Sabin, M. A. Guerrero, S. Zavala +3
We present a detailed analysis of the new planetary nebula (PN) IPHASX J193718.6+202102 using deep imaging and intermediate- and high resolution spectroscopy that are interpreted t…
Discovery of a Fast Expanding Shell in the Inside-out Born-Again Planetary Nebula HuBi 1 Through High-Dispersion Integral Field Spectroscopy
J. S. Rechy-García, M. A. Guerrero, E. Santamaría +8
HuBi 1 has been proposed to be member of the rare class of born-again planetary nebulae (PNe), i.e., its central star experienced a very late thermal pulse and ejected highly-proce…
Unveiling the stellar origin of the Wolf-Rayet nebula NGC6888 through infrared observations
G. Rubio, J. A. Toalá, P. Jiménez-Hernández +5
We present a comprehensive infrared (IR) study of the iconic Wolf-Rayet (WR) wind-blown bubble NGC6888 around WR136. We use Wide-field Infrared Survey Explorer (WISE), Spitzer IRAC…
A Radio Pinwheel Emanating from WR147
Luis F. Rodríguez, Jane Arthur, Gabriela Montes +2
Wolf-Rayet (WR) stars are evolved massive stars, presumably on their way to becoming supernova. They are characterized by high luminosities and fast and dense stellar winds. We hav…
Dust in the Wolf-Rayet Nebula M1-67
P. Jiménez-Hernández, S. J. Arthur, J. A. Toalá
The Wolf-Rayet nebula M1-67 around WR124 is located above the Galactic plane in a region mostly empty of interstellar medium, which makes it the perfect target to study the mass-lo…
Planetary nebulae with Wolf-Rayet-type central stars -- I. The case of the high-excitation NGC 2371
V. M. A. Gómez-González, J. A. Toalá, M. A. Guerrero +4
We present the analysis of the planetary nebula (PN) NGC 2371 around the [Wolf-Rayet] ([WR]) star WD 0722295. Our Isaac Newton Telescope (INT) Intermediate Dispersion Spectrogra…
Extended X-ray emission from the classic nova DQ Her -- On the possible presence of a magnetized jet
J. A. Toalá, M. A. Guerrero, E. Santamaría +2
We present an analysis of archival Chandra and XMM-Newton observations of the magnetically-active cataclysmic variable DQ Her and the shell around it ejected in a nova event in 193…
Rings and arcs around evolved stars. II. The Carbon Star AFGL 3068 and the Planetary Nebulae NGC 6543, NGC 7009 and NGC 7027
M. A. Guerrero, G. Ramos-Larios, J. A. Toala +2
We present a detailed comparative study of the arcs and fragmented ring-like features in the haloes of the planetary nebulae (PNe) NGC 6543, NGC 7009, and NGC 7027 and the spiral p…
Chandra observations of the planetary nebula IC 4593
J. A. Toalá, M. A. Guerrero, L. Bianchi +2
The ACIS-S camera on board the Chandra X-ray Observatory has been used to discover a hot bubble in the planetary nebula (PN) IC4593, the most distant PN detected by Chandra so far.…
The Bubble Nebula NGC 7635 -- testing the wind-blown bubble theory
J. A. Toalá, M. A. Guerrero, H. Todt +5
We present a multiwavelength study of the iconic Bubble Nebula (NGC 7635) and its ionising star BD602522. We obtained XMM-Newton EPIC X-ray observations to search for…
Angular Expansion of Nova Shells
E. Santamaría, M. A. Guerrero, G. Ramos-Larios +4
Nova shells can provide us with important information on their distance, their interactions with the circumstellar and interstellar media, and the evolution in morphology of the ej…
Wolf-Rayet stars in M81 using GTC/OSIRIS: 7 new detections, analysis and classification of the full sample
V. M. A. Gómez-González, Y. D. Mayya, D. Rosa-González +3
We report the detection of 7 new Wolf-Rayet (WR) star locations in M81 using the Multi-Object Spectrograph of the OSIRIS instrument at Gran Telescopio Canarias. These detections ar…