226 citations · 1.3k across the 51 of their papers we have counts for
16 papers · 1 filter
Detection of C Combination Bands in the Near-IR Spectrum of Tc 1
Morgan M. Giese, Vincent J. Esposito, Simon Van Schuylenbergh +26
We report the detection of a set of new near-infrared emission features between 3.5 and 5.2 m in JWST/NIRSpec observations of Tc 1, the planetary nebula known for displaying the…
Detection of CH3+ in the O-rich planetary nebula NGC 6302
Charmi Bhatt, Jan Cami, Els Peeters +33
Planetary nebulae are sites where ejected stellar material evolves into complex molecules, but the precise physical conditions and chemical routes that govern these processes are u…
ALMA detection of Masers and Dasars in the Hydrogen Recombination Lines of the Planetary Nebula Mz3
Z. Abraham, P. P. B. Beaklini, I. Aleman +5
The hydrogen recombination lines H30, H40, H42, H50 and H57 and the underlying bremsstrahlung continuum emission were detected with ALMA in the bipolar nebula Mz3. T…
SMC-Last Extracted Photometry
T. A. Kuchar, G. C. Sloan, D. R. Mizuno +11
We present point-source photometry from the Spitzer Space Telescope's final survey of the Small Magellanic Cloud (SMC). We mapped 30 square degrees in two epochs in 2017, with the…
Diverse Science from VLT imagery and spectroscopy of PNe in the Galactic Bulge
Quentin Parker, Shuyu Tan, Andreas Ritter +1
We have undertaken a deep investigation of a well defined sample of 136 PNe located in a 10x10 degree central region of the Galactic Bulge observed with the ESO VLT and supplemente…
Radio observations of planetary nebulae: no evidence for strong radial density gradients
Marcin Hajduk, Peter A. M. van Hoof, Karolina Śniadkowska +4
Radio continuum observations trace thermal emission of ionized plasma in planetary nebulae and bring useful information on nebular geometries. A model of homogeneous sphere or shel…
Herschel Planetary Nebula Survey (HerPlaNS): Hydrogen Recombination Laser Lines in Mz 3
Isabel Aleman, Katrina Exter, Toshiya Ueta +12
The bipolar nebula Menzel 3 (Mz 3) was observed as part of the \textit{Herschel} Planetary Nebula Survey (\textit{HerPlaNS}), which used the PACS and SPIRE instruments aboard the \…
The extinction and dust-to-gas structure of the planetary nebula NGC 7009 observed with MUSE
J. R. Walsh, A. Monreal-Ibero, M. J. Barlow +3
The large field and wavelength range of MUSE is well suited to mapping Galactic planetary nebulae (PN). The bright PN NGC 7009 was observed with MUSE on the VLT during the Science…
A study of rotating globular clusters - the case of the old, metal-poor globular cluster NGC 4372
N. Kacharov, P. Bianchini, A. Koch +7
Aims: We present the first in-depth study of the kinematic properties and derive the structural parameters of NGC 4372 based on the fit of a Plummer profile and a rotating, physica…
Herschel Planetary Nebula Survey (HerPlaNS) - First Detection of OH+ in Planetary Nebulae
I. Aleman, T. Ueta, D. Ladjal +15
We report the first detections of OH emission in planetary nebulae (PNe). As part of an imaging and spectroscopy survey of 11 PNe in the far-IR using the PACS and SPIRE instrum…
3He: Does the problem persists?
L. Guzman-Ramirez, J. E. Pineda, A. A. Zijlstra +2
To understand the chemical evolution of the Galaxy, we need to understand the contribution of PNe in the 3He abundance. 3He abundances have been detected only in a couple of PNe, t…
Radiation Transfer in the Cavity and Shell of Planetary Nebulae
M. D. Gray, M. Matsuura, A. A. Zijlstra
We develop an approximate analytical solution for the transfer of line-averaged radiation in the hydrogen recombination lines for the ionized cavity and molecular shell of a spheri…
The Expansion Proper Motions of the Planetary Nebula NGC 6302 from HST imaging
C. Szyszka, A. A. Zijlstra, J. R. Walsh
Planetary nebulae expand on time scales of 10^3-10^4 yr. For nearby objects, their expansion can be detected within years to decades. The pattern of expansion probes the internal v…
Spitzer Spectroscopy of Mass Loss and Dust Production by Evolved Stars in Globular Clusters
G. C. Sloan, N. Matsunaga, M. Matsuura +7
We have observed a sample of 35 long-period variables and four Cepheid variables in the vicinity of 23 Galactic globular clusters using the Infrared Spectrograph on the Spitzer Spa…
The Structure of the Outer Galactic Disc as revealed by IPHAS early A Stars
S. E. Sale, J. E. Drew, C. Knigge +10
This study is an investigation of the stellar density profile of the Galactic disc in the Anticentre direction. We select over 40,000 early A stars from IPHAS photometry in the Gal…
The global gas and dust budget of the Large Magellanic Cloud: AGB stars and supernovae, and the impact on the ISM evolution
M. Matsuura, M. J. Barlow, A. A. Zijlstra +10
We report on an analysis of the gas and dust budget in the the interstellar medium (ISM) of the Large Magellanic Cloud (LMC). Recent observations from the Spitzer Space Telescope e…