300 citations · 2.4k across the 70 of their papers we have counts for
27 papers · 1 filter
Metallicity dependence of Wolf-Rayet binaries using detailed binary models: An absence of long-period systems at low metallicity
Max M. Briel, Eirini Kasdagli, Tassos Fragos +6
Observations of Wolf-Rayet (WR) stars in binaries in the SMC and LMC suggest a preference for short period ( days) orbits, with an apparent absence of WRs in long-peri…
Forming Double Neutron Stars using Detailed Binary Evolution Models with POSYDON: Comparison to the Galactic Systems
Abhishek Chattaraj, Jeff J. Andrews, Simone S. Bavera +14
With over two dozen detections in the Milky Way, double neutron stars (DNSs) provide a unique window into massive binary evolution. We use the POSYDON binary population synthesis c…
Mass Transfer in Eccentric Orbits with Self-consistent Stellar Evolution
Kyle Akira Rocha, Rachel Hur, Vicky Kalogera +12
We investigate Roche lobe overflow mass transfer (MT) in eccentric binary systems between stars and compact objects (COs), modeling the coupled evolution of both the star and the o…
Irregularly Sampled Time Series Interpolation for Detailed Binary Evolution Simulations
Philipp M. Srivastava, Ugur Demir, Aggelos Katsaggelos +14
Modeling of large populations of binary stellar systems is an intergral part of a many areas of astrophysics, from radio pulsars and supernovae to X-ray binaries, gamma-ray bursts,…
The Formation of Black Holes in Non-interacting, Isolated Binaries. Gaia Black Holes as Calibrators of Stellar Winds From Massive Stars
Matthias U. Kruckow, Jeff J. Andrews, Tassos Fragos +10
Context. The black holes discovered using Gaia, especially Gaia BH1 and BH2, have low mass companions of solar-like metallicity in wide orbits. For standard isolated binary evoluti…
Emulators for stellar profiles in binary population modeling
Elizabeth Teng, Ugur Demir, Zoheyr Doctor +14
Knowledge about the internal physical structure of stars is crucial to understanding their evolution. The novel binary population synthesis code POSYDON includes a module for inter…
A Lack of Mass-Gap Compact Object Binaries in APOGEE
Meir Schochet, Jamie Tayar, Jeff J. Andrews
Depending principally on mass, the compact object remnant left behind after a star's life may be a white dwarf (WD), neutron star (NS), or black hole (BH). While we have large samp…
Theia 456: Tidally Shredding an Open Cluster
Kyle R. Tregoning, Jeff J. Andrews, Marcel A. Agüeros +4
The application of clustering algorithms to the Gaia astrometric catalog has revolutionized our census of stellar populations in the Milky Way, including the discovery of many new,…
A Sample of Neutron Star and Black Hole Binaries Detected through Gaia DR3 Astrometry
Jeff J. Andrews, Kirsty Taggart, Ryan Foley
With its exquisite astrometric precision, the latest Gaia data release includes astrometric binaries, each of which have measured orbital periods, eccentricities, and…
Active Learning for Computationally Efficient Distribution of Binary Evolution Simulations
Kyle Akira Rocha, Jeff J. Andrews, Christopher P. L. Berry +13
Binary stars undergo a variety of interactions and evolutionary phases, critical for predicting and explaining observed properties. Binary population synthesis with full stellar-st…
POSYDON: A General-Purpose Population Synthesis Code with Detailed Binary-Evolution Simulations
Tassos Fragos, Jeff J. Andrews, Simone S. Bavera +22
Most massive stars are members of a binary or a higher-order stellar systems, where the presence of a binary companion can decisively alter their evolution via binary interactions.…
Weighing the Darkness II: Astrometric Measurement of Partial Orbits with Gaia
Jeff J. Andrews, Katelyn Breivik, Chirag Chawla +2
Over the course of several years, stars trace helical trajectories as they traverse across the sky due to the combined effects of proper motion and parallax. It is well known that…
The ELM Survey. VIII. 98 Double White Dwarf Binaries
Warren R. Brown, Mukremin Kilic, Alekzander Kosakowski +7
We present the final sample of 98 detached double white dwarf (WD) binaries found in the Extremely Low Mass (ELM) Survey, a spectroscopic survey targeting <0.3 Msun He-core WDs com…
Weighing the Darkness: Astrometric Mass Measurement of Hidden Stellar Companions using Gaia
Jeff J. Andrews, Katelyn Breivik, Sourav Chatterjee
In astrometric binaries, the presence of a dark, unseen star can be inferred from the gravitational pull it induces on its luminous binary companion. While the orbit of such binari…
Using APOGEE Wide Binaries to Test Chemical Tagging with Dwarf Stars
Jeff J. Andrews, Borja Anguiano, Julio Chanamé +4
Stars of a common origin are thought to have similar, if not nearly identical, chemistry. Chemical tagging seeks to exploit this fact to identify Milky Way subpopulations through t…
A Serendipitous Pulsar Discovery in a Search for a Companion to a Low-Mass White Dwarf
Jeff J. Andrews, Marcel A. Agüeros, Fernando Camilo +4
We report the discovery of a previously unidentified pulsar as part of a radio campaign to identify neutron star companions to low-mass white dwarfs (LMWDs) using the Robert C.\ By…
Validating TGAS wide binaries with Gaia DR2 Radial Velocities and Parallaxes
Jeff J. Andrews, Julio Chanamé, Marcel A. Agüeros
Featuring greatly improved astrometry and precise radial velocities (RVs), the second data release (DR2) from Gaia affords us a unique opportunity to test the validity of samples o…
The spin of the second-born black hole in coalescing binary black holes
Y. Qin, T. Fragos, G. Meynet +3
Various binary black hole formation channels have been proposed since the first gravitational event GW150914 was discovered by the Advanced Laser Interferometer Gravitational-Wave…
Wide Binaries in Tycho-Gaia II: Metallicities, Abundances, and Prospects for Chemical Tagging
Jeff J. Andrews, Julio Chanamé, Marcel A. Agüeros
From our recent catalog based on the first Gaia data release (TGAS), we select wide binaries in which both stars have been observed by the Radial Velocity Experiment (RAVE) or the…
Wide Binaries in Tycho-{\it Gaia}: Search Method and the Distribution of Orbital Separations
Jeff J. Andrews, Julio Chanamé, Marcel A. Agüeros
We mine the Tycho-{\it Gaia} astrometric solution (TGAS) catalog for wide stellar binaries by matching positions, proper motions, and astrometric parallaxes. We separate genuine bi…
Today a Duo, But Once a Trio? The Double White Dwarf HS 22202146 May Be A Post-Blue Straggler Binary
Jeff J. Andrews, Marcel Agüeros, Warren R. Brown +4
For sufficiently wide orbital separations {\it a}, the two members of a stellar binary evolve independently. This implies that in a wide double white dwarf (DWD), the more massive…
Constraints on the Initial-Final Mass Relation from Wide Double White Dwarfs
Jeff J. Andrews, Marcel A. Agüeros, A. Gianninas +3
We present observational constraints on the initial-final mass relation (IFMR) using wide double white dwarfs (DWDs). We identify 65 new candidate wide DWDs within the Sloan Digita…
Ultracool white dwarfs and the age of the Galactic disc
A. Gianninas, B. Curd, John R. Thorstensen +5
We present parallax observations and a detailed model atmosphere analysis of 54 cool and ultracool ( < 4000 K) white dwarfs (WDs) in the solar neighbourhood. For the f…
The Mass Distribution of Companions to Low-Mass White Dwarfs
Jeff J. Andrews, Adrian M. Price-Whelan, Marcel A. Agüeros
Measuring the masses of companions to single-line spectroscopic binary stars is (in general) not possible because of the unknown orbital plane inclination. Even when the mass of th…