186 citations
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49 papers · 1 filter
The White Dwarf Binary Pathways Survey -- IX. Three long period white dwarf plus subgiant binaries
S. G. Parsons, M. S. Hernandez, O. Toloza +8
Virtually all binaries consisting of a white dwarf with a non-degenerate companion can be classified as either close post-interaction systems (with orbital periods of a few days or…
white dwarfs within 40 pc III: spectroscopic observations of new candidates in the southern hemisphere
Mairi W. O'Brien, P. -E. Tremblay, N. P. Gentile Fusillo +31
We present a spectroscopic survey of 248 white dwarf candidates within 40 pc of the Sun; of these 244 are in the southern hemisphere. Observations were performed mostly with the Ve…
Infrared variability of young solar analogs in the Lagoon Nebula
C. Ordenes-Huanca, M. Zoccali, A. Bayo +9
T Tauri stars are low-mass pre-main sequence stars that are intrinsically variable. Due to the intense magnetic fields they possess, they develop dark spots on their surface that,…
The White Dwarf Binary Pathways Survey -- VIII: a post common envelope binary with a massive white dwarf and an active G-type secondary star
M. S. Hernandez, M. R. Schreiber, S. G. Parsons +6
The white dwarf binary pathways survey is dedicated to studying the origin and evolution of binaries containing a white dwarf and an intermediate-mass secondary star of the spectra…
Physical properties of accretion shocks toward the Class I protostellar system Oph-IRS 44
E. Artur de la Villarmois, V. V. Guzmán, J. K. Jørgensen +6
(Abridged) Physical processes such as accretion shocks are thought to be common in the protostellar phase, where the envelope component is still present, and they can release molec…
Discovery of a brown dwarf with quasi-spherical mass-loss
Dary A. Ruíz-Rodríguez, Lucas A. Cieza, Simon Casassus +14
We report the serendipitous discovery of an elliptical shell of CO associated with the faint stellar object SSTc2d J163134.1-24006 as part of the "Ophiuchus Disk Survey Employing A…