Results 61 to 70 of about 2,016,206 (398)
The white dwarf luminosity function. I. Statistical errors and alternatives [PDF]
, 2006 Over the years, several methods have been proposed to compute galaxy luminosity functions, from the most simple ones -counting sample objects inside a given volume- to very sophisticated ones -like the C- method, the STY method or the Choloniewski method,
Abazajian +59 more
core +3 more sources
The Temperatures of White Dwarfs in Dwarf Novae [PDF]
International Astronomical Union Colloquium, 1996 AbstractWe attempt to measure the temperature of all the quiescent dwarf novae that have been observed with IUE, by fitting the observed flux distribution of white dwarfs (WDs) with known temperatures. This approach gives results similar to those using much more sophisticated modelling, but allows us to investigate the relationship with system ...
C. La Dous, B. J. M. Hassall
openaire +2 more sources
White-Dwarf Asteroseismology With the Kepler Space Telescope
Frontiers in Astronomy and Space Sciences, 2020 In the course of their evolution, white-dwarf stars go through at least one phase of variability in which the global pulsations they undergo allow astronomers to peer into their interiors, making it possible to shed light on their deep inner structure ...
Alejandro H. Córsico +1 more
doaj +1 more source
Hot white dwarfs and pre-white dwarfs discovered with SALT
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The Southern African Large Telescope survey of helium-rich hot subdwarfs aims to explore evolutionary pathways among groups of highly evolved stars. The selection criteria mean that several hot white dwarfs and related objects have also been included.
C S Jeffery +5 more
openaire +3 more sources
Sub-Chandrasekhar-mass White Dwarf Detonations Revisited [PDF]
, 2017 The detonation of a sub-Chandrasekhar-mass white dwarf (WD) has emerged as one of the most promising Type Ia supernova (SN Ia) progenitor scenarios. Recent studies have suggested that the rapid transfer of a very small amount of helium from one WD to ...
K. Shen +3 more
semanticscholar +1 more source
A refined search for pulsations in white dwarf companions to millisecond pulsars★ [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present optical high-speed photometry of three millisecond pulsars with low-mass ($< 0.3 M_{\odot}$) white dwarf companions, bringing the total number of such systems with follow-up time-series photometry to five.
M. Kilic +9 more
semanticscholar +1 more source
Galaxies, 2023 In this paper, the possibility of periodic pulsar-like gamma-ray emission from the white dwarfs in AE Aquarii and AR Scorpii is investigated. We show that the white dwarf magnetospheres in AE Aquarii and AR Scorpii can possibly induce potentials to ...
Pieter J. Meintjes +3 more
doaj +1 more source
The Post-Merger Magnetized Evolution of White Dwarf Binaries: The Double-Degenerate Channel of Sub-Chandrasekhar Type Ia Supernovae and the Formation of Magnetized White Dwarfs [PDF]
, 2013 Type Ia supernovae (SNe Ia) play a crucial role as standardizable cosmological candles, though the nature of their progenitors is a subject of active investigation.
Behrends, Jan +8 more
core +3 more sources
Binary Star Orbits. V. The Nearby White Dwarf/Red Dwarf Pair 40 Eri BC [PDF]
, 2017 A new relative orbit solution with new dynamical masses is determined for the nearby white dwarf–red dwarf pair 40 Eri BC. The period is 230.29 ± 0.68 years.
B. Mason, W. Hartkopf, Korie N. Miles
semanticscholar +1 more source
White dwarf pollution by asteroids from secular resonances [PDF]
Monthly notices of the Royal Astronomical Society, 2018 In the past few decades, observations have revealed signatures of metals polluting the atmospheres of white dwarfs. The diffusion timescale for metals to sink from the atmosphere of a white dwarf is of the order of days for a hydrogen-dominated ...
Jeremy L. Smallwood +3 more
semanticscholar +1 more source