924 citations · 6.6k across the 158 of their papers we have counts for
158 papers
Current Unsolved Problems in Planetary Nebulae Research
Sun Kwok, Bruce Balick, You-Hua Chu +5
While there has been significant progress in our understanding of the origin and evolu-tion of planetary nebulae in the last 50 years, there remain several unsolved problems. These…
The porous envelope and circumstellar wind matter of the closest carbon star, CW Leonis
Hyosun Kim, Ho-Gyu Lee, Youichi Ohyama +5
Recent abrupt changes of CW Leonis may indicate that we are witnessing the moment that the central carbon star is evolving off the Asymptotic Giant Branch (AGB) and entering into t…
Chandra Observation of NGC 1559: Eight Ultraluminous X-ray Sources Including a Compact Binary Candidate
Chen-Hsun Ma, Kwan-Lok Li, You-Hua Chu +1
Despite the 30-year history of ultra-luminous X-ray sources (ULXs) studies, issues like the majority of their physical natures (i.e., neutron stars, stellar-mass black holes, or in…
XMM-Newton Detection of X-ray Emission from the Metal-Polluted White Dwarf G 29-38
S. Estrada-Dorado, M. A. Guerrero, J. A. Toalá +3
A recent analysis of Chandra X-ray data of the metal-polluted white dwarf (WD) G29-38 has revealed X-ray emission that can be attributed to the accretion of debris from a planetary…
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…
Critical Metallicity of Cool Supergiant Formation. I. Effects on Stellar Mass Loss and Feedback
Po-Sheng Ou, Ke-Jung Chen, You-Hua Chu +1
This paper systematically studies the relation between metallicity and mass loss of massive stars. We perform one-dimensional stellar evolution simulations and build a grid of $\si…