Publications (16)
Mapping NGC 7027 in New Light: CO and HCO Emission Reveal Its Photon- and X-ray-Dominated Regions
Jesse Bublitz, Joel H. Kastner, Pierre Hily-Blant +7
The young and well-studied planetary nebula NGC 7027 harbors significant molecular gas that is irradiated by luminous, point-like UV (central star) and diffuse (shocked nebular) X-…
Circumstellar masers in the Magellanic Clouds
Jacco Th. van Loon, Albert A. Zijlstra, Valentin Bujarrabal +1
We have searched for 22 GHz H2O and 43/86/129 GHz SiO masers in bright IRAS point sources in the SMC and LMC, to test whether the kinematics of the mass loss from these stars depen…
The Science Case for Simultaneous mm-Wavelength Receivers in Radio Astronomy
Richard Dodson, MarÃa J. Rioja, Taehyun Jung +6
This review arose from the European Radio Astronomy Technical Forum (ERATec) meeting held in Firenze, October 2015, and aims to highlight the breadth and depth of the high-impact s…
Discovery of the first extra-galactic SiO maser
Jacco Th. van Loon, Albert A. Zijlstra, Valentin Bujarrabal +1
We report on the detection of SiO J=2--1 v=1 (86 GHz) maser emission from the red supergiant IRAS04553--6825 in the LMC. It has thereby become the first known source of SiO maser e…
VLTI images of circumbinary disks around evolved stars
Jacques Kluska, Rik Claes, Akke Corporaal +13
The new generation of VLTI instruments (GRAVITY, MATISSE) aims to produce routinely interferometric images to uncover the morphological complexity of different objects at high angu…
VLTI/PIONIER imaging of post-AGB binaries. An INSPIRING hunt for inner rim substructures in circumbinary discs
Toon De Prins, Akke Corporaal, Jacques Kluska +10
We image the detailed inner rim morphology for a sample of post-AGB circumbinary discs observed using NIR interferometry. At resolutions down to ~1-2 mas (corresponding to ~1-10 AU…
The messy death of a multiple star system and the resulting planetary nebula as observed by JWST
Orsola De Marco, Muhammad Akashi, Stavros Akras +66
Planetary nebulae (PNe), the ejected envelopes of red giant stars, provide us with a history of the last, mass-losing phases of 90 percent of stars initially more massive than the…
A population of transition disks around evolved stars: Fingerprints of planets? Catalog of disks surrounding Galactic post-AGB binaries
Jacques Kluska, Hans Van Winckel, Quentin Coppée +4
Post-asymptotic giant branch (post-AGB) binaries are surrounded by massive disks of gas and dust that are similar to protoplanetary disks around young stars. We assembled a catalog…
The binary and the disk: the beauty is found within NGC3132 with JWST
Raghvendra Sahai, Valentin Bujarrabal, Guillermo Quintana-Lacaci +4
The planetary nebula (PN) NGC3132 is a striking example of the dramatic but poorly understood, mass-loss phenomena that (1-8) Msun stars undergo during their death throes as they e…
Registration of HO and SiO masers in the Calabash Nebula, to confirm the Planetary Nebula paradigm
Richard Dodson, Maria Rioja, Valentin Bujarrabal +4
We report on the astrometric registration of VLBI images of the SiO and water masers in OH231.8+4.2, the iconic Proto-Planetary Nebula also known as the Calabash nebula, using the…
A New Radio Molecular Line Survey of Planetary Nebulae: HNC/HCN as a Diagnostic of Ultraviolet Irradiation
Jesse Bublitz, Joel H. Kastner, Miguel Santander-GarcÃa +3
Certain planetary nebulae contain shells, filaments, or globules of cold gas and dust whose heating and chemistry are likely driven by UV and X-ray emission from their central star…
Discovery of H2O maser emission from the red supergiant IRAS04553-6825 in the Large Magellanic Cloud
Jacco Th. van Loon, Peter te Lintel Hekkert, Valentin Bujarrabal +2
We report the detection of 22 GHz H2O maser emission from the red supergiant IRAS04553-6825 in the Large Magellanic Cloud. It is the first known source of circumstellar H2O maser e…
Searching for Corannulene with ALMA: Observations of the Red Rectangle Nebula
Elise Koo, Alessandra Candian, Michiel Hogerheijde +6
Polycyclic Aromatic Hydrocarbons (PAHs) are organic molecules responsible for the Aromatic Infrared Bands (AIBs), observed across a multitude of astrophysical environments. Despite…
The Red Rectangle: a thin disk with big grains
Javier Alcolea, Valentin Bujarrabal, Arancha Castro-Carrizo +3
The Red Rectangle is a nebula surrounding the post-AGB star HD 44179. It is the prototype of a particular class of nebulae associated with post-AGB binaries characterised by the pr…
High-Speed Outflows and Dusty Disks during the AGB to PN Transition: The PANORAMA survey
Raghvendra Sahai, Javier Alcolea, Bruce Balick +15
As mass-losing asymptotic giant branch (AGB) stars evolve to planetary nebulae (PNe), the mass outflow geometries transform from nearly spherical to extreme aspherical. The physica…
Sampling Molecular Gas in the Helix Planetary Nebula: Variation in HNC/HCN with UV Flux
Jesse Bublitz, Joel H. Kastner, Pierre Hily-Blant +4
Observations of molecular clouds, prestellar cores, and protoplanetary disks have established that the HNC/HCN ratio may be a potent diagnostic of molecular gas physical conditions…