105 citations · 338 across the 20 of their papers we have counts for
21 papers
Two Predicted, Concentric Nova Shells Surround the Prototype Dwarf Nova U Geminorum
Michael M. Shara, Kenneth M. Lanzetta, Aayushi Doshi +7
In the 170 years since its discovery, U Gem has been intensively studied as the prototypical cataclysmic binary star. Its massive white dwarf (WD) (~ 1.2 Msun) is cannibalizing its…
The Role of Binary Configuration in Shaping Nova Evolution via Wind Accretion in Symbiotic Systems
Irin Babu Vathachira, Yael Hillman, Amit Kashi
We investigate the impact of the Bondi--Hoyle--Lyttleton (BHL) accretion mechanism on the evolution of nova eruptions in symbiotic systems by systematically varying three key input…
An optical--mid-infrared color evolution tool for nova identification using WISE data
Joseph Onuegbu, Dafne Guetta, Yael Hillman +2
We present a novel approach for characterizing nova candidates by exploiting the infrared capabilities of the Wide-field Infrared Survey Explorer (WISE) catalog. We developed a pip…
It's always the quiet ones: Single Degenerate Double Detonation Type Ia Supernova from Quiescent Helium Accretion
Amir Michaelis, Yael Hillman, Hagai B. Perets
We investigate a sub-Chandrasekhar mass double detonation pathway for Type Ia supernovae arising from single degenerate helium accreting carbon-oxygen white dwarfs. Building on our…
Helium Accumulation and Thermonuclear Instabilities on Accreting White Dwarfs: From Recurring Helium Novae to Type Ia Supernovae
Yael Hillman, Amir Michaelis, Hagai B. Perets
We investigate helium accumulation on carbon-oxygen (CO) white dwarfs (WDs), exploring a broad parameter space of initial WD masses (--) and helium accretion ra…
On the light-curves of disk and bulge novae
Asaf Cohen, Dafne Guetta, Yael Hillman +4
We examine the light curves of a sample of novae, classifying them into single-peaked and multiple-peaked morphologies. Using accurate distances from Gaia, we determine the spatial…
Exploring mass transfer mechanisms in symbiotic systems
Irin Babu Vathachira, Yael Hillman, Amit Kashi
We define two regimes of the parameter space of symbiotic systems based on the dominant mass transfer mechanism. A wide range of white dwarf (WD) mass, donor mass, and donor radius…
Eruptive novae in symbiotic systems
Irin Babu Vathachira, Yael Hillman, Amit Kashi
We conduct numerical simulations of multiple nova eruptions in detached, widely separated symbiotic systems that include an asymptotic giant branch (AGB) companion to investigate t…
A 9-Month Hubble Space Telescope Near-UV Survey of M87. I. Light and Color Curves of 94 Novae, and a Re-determination of the Nova Rate
Michael M. Shara, Alec M. Lessing, Rebekah Hounsell +10
M87 has been monitored with a cadence of 5 days over a 9 month-long span through the near-ultraviolet (NUV:F275W) and optical (F606W) filters of the Wide Field Camera 3 (WFC3) of t…
The Nova KT Eri Is a Recurrent Nova With a Recurrence Time-Scale of 40-50 Years
Bradley E. Schaefer, Frederick M. Walter, Rebekah Hounsell +1
KT Eridani was a very fast nova in 2009 peaking at V=5.42 mag. We marshal large data sets of photometry to finally work out the nature of KT Eri. From the TESS light curve, as conf…
Nova Neutrinos in the Multi-Messenger Era
Dafne Guetta, Yael Hillman, Massimo Della Valle
The recently discovered high energy emission from the recurrent nova RS Ophiuchi by Fermi-LAT ( 100 MeV), H.E.S.S. and MAGIC ( 100 GeV), hints towards a possible hadronic ori…
Explaining Prolonged Fluctuations in Light Curves of Classical Novae via Modeling
Yael Hillman
Fluctuations during a prolonged maximum have been observed in several nova eruptions, although it is not clear, and can not be deduced directly from observations, if the phenomenon…
The Effect of Enriched Accreted Matter on the Development of Novae
Yael Hillman, Maya Gerbi
The development of a nova eruption is well known to be determined by the white dwarf (WD) mass and the rate at which it accretes mass from its donor. One of the advancements in thi…
In-depth Analysis of Evolving Binary Systems that Produce Nova Eruptions
Yael Hillman
This study is the direct continuation of the work performed in Hillman et al. (2020) where they used their feedback dominated numerical simulations to model the evolution of four i…
Simulations of Multiple Nova Eruptions Induced by Wind Accretion in Symbiotic Systems
Yael Hillman, Amit Kashi
We use a combined binary evolution code including dynamical effects to study nova eruptions in a symbiotic system. Following the evolution, over years, of multiple conse…
A unified theory of cataclysmic variables from self-consistent numerical simulations
Yael Hillman, Michael M. Shara, Dina Prialnik +1
The hydrogen-rich envelopes accreted by white dwarf stars from their red dwarf companions lead to thermonuclear runaways observed as classical nova eruptions peaking at up to 1 Mil…
The supersoft X-ray transient ASASSN-16oh as a thermonuclear runaway without mass ejection
Yael Hillman, Marina Orio, Dina Prialnik +3
The supersoft X-ray and optical transient ASASSN-16oh has been interpreted by Maccarone et al. (2019) as having being induced by an accretion event on a massive white dwarf, resemb…
The Masses and Accretion Rates of White Dwarfs in Classical and Recurrent Novae
Michael M. Shara, Dina Prialnik, Yael Hillman +1
Models have long predicted that the frequency-averaged masses of white dwarfs in Galactic classical novae are twice as large as those of field white dwarfs. Only a handful of dynam…
Temporal resolution of a pre-maximum halt in a Classical Nova: V5589 Sgr observed with STEREO HI-1B
S. P. S. Eyres, D. Bewsher, Y. Hillman +5
Classical novae show a rapid rise in optical brightness over a few hours. Until recently the rise phase, particularly the phenomenon of a pre-maximum halt, was observed sporadicall…
Growing White Dwarfs to the Chandrasekhar Limit: The Parameter Space of the Single Degenerate SNIa Channel
Yael Hillman, Dina Prialnik, Attay Kovetz +1
Can a white dwarf, accreting hydrogen-rich matter from a non-degenerate companion star, ever exceed the Chandrasekhar mass and explode as a type Ia supernova? We explore the range…
Observational Signatures of SNIa Progenitors, as Predicted by Models
Yael Hillman, Dina Prialnik, Attay Kovetz +1
A definitive determination of the progenitors of type Ia supernovae (SNIa) has been a conundrum for decades. The single degenerate scenario a white dwarf (WD) in a semi-detache…