91 citations · 617 across the 30 of their papers we have counts for
30 papers
ZFIRE -- The Gas Inflow Inequality for Satellite Galaxies in Cluster and Field Halos at z = 2
Anishya Harshan, Kim-Vy Tran, Anshu Gupta +2
Gas inflow into galaxies should affect the star formation and hence the evolution of galaxies across cosmic time. In this work, we use TNG100 of the IllustrisTNG simulations to und…
MOSEL Survey: Extremely weak outflows in EoR analogues at z=3-4
Anshu Gupta, Kim-Vy Tran, Trevor Mendel +7
This paper presents deep K-band spectroscopic observations of galaxies at z=3-4 with composite photometric rest-frame Hb+[OIII] equivalent widths EW_0>600A, comparable to the EW of…
The AGEL Survey: Spectroscopic Confirmation of Strong Gravitational Lenses in the DES and DECaLS Fields Selected Using Convolutional Neural Networks
Kim-Vy H. Tran, Anishya Harshan, Karl Glazebrook +13
We present spectroscopic confirmation of candidate strong gravitational lenses using the Keck Observatory and Very Large Telescope as part of our ASTRO 3D Galaxy Evolution with Len…
High accuracy post-Newtonian and numerical relativity comparisons involving higher modes for eccentric binary black holes and a dominant mode eccentric inspiral-merger-ringdown model
Abhishek Chattaraj, Tamal RoyChowdhury, Divyajyoti +2
Spherical harmonic modes of gravitational waveforms for inspiraling compact binaries in eccentric orbits from post-Newtonian (PN) theory accurate to third post-Newtonian order, and…
-mode oscillations of compact stars with realistic equations of state in dynamical spacetime
Swarnim Shashank, Fatemeh Hossein Nouri, Anshu Gupta
In this study, we perform full three dimensional numerical relativity simulations of non-rotating general relativistic stars. Extending the studies for polytropic equation of state…
ZFIRE: The Beginning of the End for Massive Galaxies at z ~ 2 and Why Environment Matters
Anishya Harshan, Anshu Gupta, Kim-Vy Tran +6
We use ZFIRE and ZFOURGE observations with the Spectral Energy Distribution (SED) fitting tool Prospector to reconstruct the star formation histories (SFHs) of proto-cluster and fi…
Tidal deformation of dynamical horizons in binary black hole mergers
Vaishak Prasad, Anshu Gupta, Sukanta Bose +1
An important physical phenomenon that manifests itself during the inspiral of two orbiting compact objects is the tidal deformation of each under the gravitational influence of its…
Resolving star-forming clumps in a z 2 lensed galaxy: a pixelated Bayesian approach
Soniya Sharma, Johan Richard, Tiantian Yuan +5
We present a pixelized source reconstruction method applied on Integral Field Spectroscopic (IFS) observations of gravitationally lensed galaxies. We demonstrate the effectiveness…
MOSEL and IllustrisTNG: Massive Extended Galaxies at z=2 Quench Later Than Normal-size Galaxies
Anshu Gupta, Kim-Vy Tran, Annalisa Pillepich +4
Using the TNG100 (100 Mpc)^3 simulation of the IllustrisTNG project, we demonstrate a strong connection between the onset of star formation quenching and the stellar size of galaxi…
Gravitational waves from binary black hole mergers surrounded by scalar field clouds: Numerical simulations and observational implications
Sunil Choudhary, Nicolas Sanchis-Gual, Anshu Gupta +3
We show how gravitational-wave observations of binary black hole (BBH) mergers can constrain the physical characteristics of a scalar field cloud parameterized by mass an…
MOSEL: Strong [OIII]5007 Å Emitting Galaxies at (3<z<4) from the ZFOURGE Survey
Kim-Vy H. Tran, Ben Forrest, Leo Y. Alcorn +13
To understand how strong emission line galaxies (ELGs) contribute to the overall growth of galaxies and star formation history of the universe, we target Strong ELGs (SELGs) from t…
News from horizons in binary black hole mergers
Vaishak Prasad, Anshu Gupta, Sukanta Bose +2
In a binary black hole merger, it is known that the inspiral portion of the waveform corresponds to two distinct horizons orbiting each other, and the merger and ringdown signals c…
MOSEL Survey: Tracking the Growth of Massive Galaxies at 2<z<4 using Kinematics and the IllustrisTNG Simulation
Anshu Gupta, Kim-Vy Tran, Jonathan Cohn +13
We use K-band spectroscopic data from the Multi-Object Spectroscopic Emission Line (MOSEL) survey to analyze the kinematic properties of galaxies at z>3. Our sample consists of 34…
ZFIRE: Measuring Electron Density with [OII] as a function of environment at z = 1.62
Anishya Harshan, Anshu Gupta, Kim-Vy Tran +8
The global star formation rates (SFR) of galaxies at fixed stellar masses increase with redshift and are known to vary with environment unto z~2. We explore here whether the change…
A Tale of Two Clusters: An Analysis of Gas-Phase Metallicity and Nebular Gas Conditions in Proto-cluster Galaxies at z~2
Leo Y. Alcorn, Anshu Gupta, Kim-Vy Tran +12
The ZFIRE survey has spectroscopically confirmed two proto-clusters using the MOSFIRE instrument on Keck 1: one at z=2.095 in COSMOS and another at z=1.62 in UDS. Here we use an up…
Galaxy Merger Fractions in Two Clusters at Using the Hubble Space Telescope
Courtney Watson, Kim-Vy Tran, Adam Tomczak +8
We measure the fraction of galaxy-galaxy mergers in two clusters at using imaging and grism observations from the {\it Hubble Space Telescope}. The two galaxy cluster cand…
Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye
Łukasz Wyrzykowski, P. Mróz, K. A. Rybicki +182
Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the…
High Resolution spatial analysis of a z 2 lensed galaxy using adaptive coadded source-plane reconstruction
Soniya Sharma, Johan Richard, Tiantian Yuan +5
We present spatially resolved analysis of a lensed galaxy, SDSS1958+5950 at , from the Cambridge Sloan Survey of Wide Arcs in the Sky (CASSOWARY). We use our new high re…
Chemical pre-processing of cluster galaxies over the past 10 billion years in the IllustrisTNG simulations
Anshu Gupta, Tiantian Yuan, Paul Torrey +10
We use the IllustrisTNG simulations to investigate the evolution of the mass-metallicity relation (MZR) for star-forming cluster galaxies as a function of the formation history of…
Dynamics of marginally trapped surfaces in a binary black hole merger: Growth and approach to equilibrium
Anshu Gupta, Badri Krishnan, Alex B. Nielsen +1
The behavior of quasi-local black hole horizons in a binary black hole merger is studied numerically. We compute the horizon multipole moments, fluxes and other quantities on black…
The most ancient spiral galaxy: a 2.6-Gyr-old disk with a tranquil velocity field
Tiantian Yuan, Johan Richard, Anshu Gupta +7
We report an integral-field spectroscopic (IFS) observation of a gravitationally lensed spiral galaxy A1689B11 at redshift . It is the most ancient spiral galaxy discovered…
Survival of Massive Star-forming Galaxies in Cluster Cores Drives Gas-Phase Metallicity Gradients : The Effects of Ram Pressure Stripping
Anshu Gupta, Tiantian Yuan, Davide Martizzi +2
Recent observations of galaxies in a cluster at z=0.35 show that their integrated gas-phase metallicities increase with decreasing cluster-centric distance. To test if ram pressure…
The COSMOS [OII] Survey: Evolution of Electron Density with Star Formation Rate
Melanie Kaasinen, Fuyan Bian, Brent Groves +2
Star-forming galaxies at exhibit significantly different properties to local galaxies of equivalent stellar mass. Not only are high-redshift star-forming galaxies character…
Radial Distribution Of ISM Gas-phase Metallicity In CLASH Clusters at z~0.35: A New Outlook On Environmental Impact On Galaxy Evolution
Anshu Gupta, Tiantian Yuan, Kim-Vy H. Tran +3
We present the first observation of cluster-scale radial metallicity gradients from star-forming galaxies. We use the DEIMOS spectrograph on the Keck II telescope to observe two CL…