59 citations · 288 across the 18 of their papers we have counts for
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Unveiling the properties of pulsating low-mass helium-core white dwarfs through TESS asteroseismology I. First results
Leila M. Calcaferro, Nikoo Hosseininezhad, Murat Uzundag +4
Recent space-based photometry, particularly from TESS, has opened new possibilities for probing the internal structure of low-mass (LM) helium (He)-core white dwarfs (WDs). We pres…
Magneto-Archeology of White Dwarfs. Revisiting the fossil field scenario with observational constraints during the red giant branch
Lukas Einramhof, Lisa Bugnet, Leila Magdalena Calcaferro +2
The detection of strong, large-scale magnetic fields at the surface of only the oldest population of white dwarfs might point towards a hidden internal magnetic field slowly rising…
Observing bright pulsating white dwarfs with PLATO: A new window into the late stages of stellar evolution
Murat Uzundag, Alejandro H. Corsico, Nicholas Jannsen +17
We present the scientific case for exploiting the capabilities of the PLATO mission to study bright pulsating white dwarfs across a wide spectral range, including hydrogen-deficien…
Post-common Envelope Evolution of Helium-core White Dwarfs
Leandro G. Althaus, Leila M. Calcaferro, Alejandro H. Córsico +1
Helium-core white dwarfs (He WDs) formed through common envelope (CE) evolution offer valuable insight into binary interaction channels and compact remnant formation. Their cooling…
An analysis of spectroscopic, seismological, astrometric, and photometric masses of pulsating white dwarf stars
Leila M. Calcaferro, Alejandro H. Córsico, Murat Uzundag +3
A central challenge in the field of stellar astrophysics lies in accurately determining the mass of isolated stars. However, for pulsating white dwarf (WD) stars, the task becomes…
Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS VI. Asteroseismology of the GW Vir-type central star of the Planetary Nebula NGC 246
Leila M. Calcaferro, Paulina Sowicka, Murat Uzundag +7
Significant advances have been achieved through the latest improvements in the photometric observations accomplished by the recent space missions, substantially boosting the study…
Exploring the internal rotation of the extremely low-mass He-core white dwarf GD 278 with TESS asteroseismology
Leila M. Calcaferro, Alejandro H. Córsico, Leandro G. Althaus +2
(Abridged) We present an exploration of the internal rotation of GD 278, the first pulsating extremely low-mass white dwarf that shows rotational splittings within its periodogram.…
Discovery, TESS Characterization, and Modeling of Pulsations in the Extremely Low Mass White Dwarf GD 278
Isaac D. Lopez, J. J. Hermes, Leila M. Calcaferro +5
We report the discovery of pulsations in the extremely low mass (ELM), likely helium-core white dwarf GD 278 via ground- and space-based photometry. GD 278 was observed by the Tran…
White dwarf-main sequence binaries from Gaia EDR3: the unresolved 100pc volume-limited sample
A. Rebassa-Mansergas, E. Solano, F. M. Jiménez-Esteban +6
We use the data provided by the Gaia Early Data Release 3 to search for a highly-complete volume-limited sample of unresolved binaries consisting of a white dwarf and a main sequen…
A new instability domain of CNO-flashing low-mass He-core stars on their early white-dwarf cooling branches
Leila M. Calcaferro, Alejandro H. Córsico, Leandro G. Althaus +1
Before reaching their quiescent terminal white-dwarf cooling branch, some low-mass helium-core white dwarf stellar models experience a number of nuclear flashes which greatly reduc…
On the existence of warm H-rich pulsating white dwarfs
Leandro G. Althaus, Alejandro H. Córsico, Murat Uzundag +8
The possible existence of warm ( K) pulsating DA white dwarf (WD) stars, hotter than ZZ Ceti stars, was predicted in theoretical studies more than 30 yr ago…
Pulsating low-mass white dwarfs in the frame of new evolutionary sequences VI. Thin H-envelope sequences and asteroseismology of ELMV stars revisited
Leila M. Calcaferro, Alejandro H. Córsico, Leandro G. Althaus +2
Some low-mass white-dwarf (LMWD) stars with H atmospheres show long-period g-mode pulsations, comprising the class of pulsating WDs called extremely low-mass variable (ELMV) stars.…
A Refined Search for Pulsations in White Dwarf Companions to Millisecond Pulsars
Mukremin Kilic, J. J. Hermes, A. H. Corsico +7
We present optical high-speed photometry of three millisecond pulsars with low-mass () white dwarf companions, bringing the total number of such systems with follo…
The coolest extremely low-mass white dwarfs
Leila M. Calcaferro, Leandro G. Althaus, Alejandro H. Córsico
Extremely low-mass white dwarf (ELM WD; ) stars are thought to be formed in binary systems via stable or unstable mass transfer. Alt…
Pulsating low-mass white dwarfs in the frame of new evolutionary sequences: V. Asteroseismology of ELMV white dwarf stars
Leila M. Calcaferro, Alejandro H. Córsico, Leandro G. Althaus
Many pulsating low-mass white-dwarf stars have been detected in the last years in the field of our Galaxy. Given that some of them exhibit multiperiodic variation of brightness, it…
Pulsating low-mass white dwarfs in the frame of new evolutionary sequences: IV. The secular rate of period change
Leila M. Calcaferro, Alejandro H. Córsico, Leandro G. Althaus
We present a theoretical assessment of the expected temporal rates of change of periods () for low-mass ($M_{\star}/M_{\sun} \lesssim 0.45$) and extremely low-mass (ELM, $M_…
Asteroseismology of the GW Virginis stars SDSS J0349-0059 and VV 47
Leila M. Calcaferro, Alejandro H. Córsico, Leandro G. Althaus
We present an asteroseismological study of SDSS J0349-0059 and VV 47 aimed mainly at deriving their total mass on the basis of state-of-the-art PG 1159 evolutionary models. We comp…