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12 papers · 2 filters
Coronal heating in multiple magnetic threads
K. V. Tam, A. W. Hood, P. K. Browning +1
Context. Heating the solar corona to several million degrees requires the conversion of magnetic energy into thermal energy. In this paper, we investigate whether an unstable magne…
Planetary nebulae in 2014: A review of research
Albert Zijlstra
Planetary nebulae had a double anniversary in 2014, 250 year since their discovery and 150 year since the correct spectroscopic identification. This paper gives an overview of plan…
Spitzer Infrared Spectrographic point source classification in the Small Magellanic Cloud
Paul M. E. Ruffle, F. Kemper, O. C. Jones +16
The Magellanic clouds are uniquely placed to study the stellar contribution to dust emission. Individual stars can be resolved in these systems even in the mid-infrared, and they a…
The Central Star Candidate of the Planetary Nebula Sh2-71: Photometric and Spectroscopic Variability
Teo Močnik, Myfanwy Lloyd, Don Pollacco +1
We present the analysis of several newly obtained and archived photometric and spectroscopic datasets of the intriguing and yet poorly understood 13.5-mag central star candidate of…
Witnessing the Emergence of a Carbon Star
L. Guzman-Ramirez, E. Lagadec, R. Wesson +9
During the late stages of their evolution, Sun-like stars bring the products of nuclear burning to the surface. Most of the carbon in the Universe is believed to originate from sta…
Dissecting the AGB star L2 Puppis: a torus in the making
F. Lykou, D. Klotz, C. Paladini +11
The circumstellar environment of L2 Pup, an oxygen-rich semiregular variable, was observed to understand the evolution of mass loss and the shaping of ejecta in the late stages of…