10 papers
Studying hot evolved stars with ultraviolet spectroscopy
Stephan Geier, Nicole Reindl, Matti Dorsch +7
Hot evolved stars are key objects to reconstruct the various evolutionary pathways of Sun-like stars, to probe binary interactions and the physics of supernovae. They serve as powe…
A formation pathway for giant planets in S-type discs of γ-Cephei-like compact binaries
MarÃa Paula Ronco, Octavio M. Guilera, Julia Venturini +2
Planet formation in close binary systems such as -Cephei is strongly challenged by the truncation of the circumprimary disc induced by the stellar companion, which limits the a…
Two hot pre-white dwarfs inside the red-giant-branch planetary nebula Pa 13 -- Double core evolution or common envelope-induced rejuvenation?
Nicole Reindl, David Jones, Todd Hillwig +4
Close binary central stars of PNe offer a unique window for investigating the conditions immediately following the ejection of a common envelope (CE). Double eclipsing and double-l…
New axion bounds derived from the 100-parsec Gaia DR3 white dwarf luminosity function
MartÃn L. Alberino, Marcelo M. Miller Bertolami, MarÃa E. Camisassa +2
The axion, a well-motivated hypothetical particle arising in extensions of the Standard Model, can be produced copiously within the hot, compact cores of white dwarf stars. The sha…
Local mixing length theory with compositional effects:\ First application to asymptotic giant branch evolution
M. M. Ocampo, M. M. Miller Bertolami, A. H. Córsico +1
During the evolution of stars on the asymptotic giant branch (AGB), thermal pulses lead to the formation of strongly stratified layers in the outer regions of the CO core, which mi…
The PICS Project: II. Circumnebular extinction variations and their effect on the planetary nebula luminosity function
Lucas M. Valenzuela, George H. Jacoby, Rhea-Silvia Remus +2
For decades, the theoretical understanding of planetary nebulae (PNe) has remained in tension with the observed universal bright-end cutoff of the PN luminosity function (PNLF). Th…