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The COSMOS-[O ii] survey: evolution of electron density with star formation rate
- M. Kaasinen, F. Bian, B. Groves, L. Kewley, Anshu Gupta
- Physics
- 3 November 2016
Star-forming galaxies at $z > 1$ exhibit significantly different properties to local galaxies of equivalent stellar mass. Not only are high-redshift star-forming galaxies characterized by higher star…
ZFIRE: Measuring Electron Density with [O ii] as a Function of Environment at z = 1.62
- A. Harshan, Anshu Gupta, C. Papovich
- PhysicsThe Astrophysical Journal
- 19 February 2020
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 changes in the star…
The most ancient spiral galaxy: a 2.6-Gyr-old disk with a tranquil velocity field
- T. Yuan, J. Richard, D. Fisher
- Physics
- 30 October 2017
We report an integral-field spectroscopic (IFS) observation of a gravitationally lensed spiral galaxy A1689B11 at redshift $z=2.54$. It is the most ancient spiral galaxy discovered to date and the…
Chemical pre-processing of cluster galaxies over the past 10 billion years in the IllustrisTNG simulations
- Anshu Gupta, T. Yuan, V. Springel
- Physics
- 10 January 2018
We use IllustrisTNG simulations to investigate the mass-metallicity relation (MZR) evolution of star-forming cluster galaxies as a function of the formation history of galaxy clusters. The…
Axisymmetric modes of rotating relativistic stars in the Cowling approximation
- J. Font, H. Dimmelmeier, Anshu Gupta, N. Stergioulas
- Physics
- 22 December 2000
ABSTRACT Axisymmetric pulsations of rotating neutron stars can be excited in severalscenarios, such as core-collapse, crust and core-quakes and binary mergersand could become detectable either in…
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, T. Yuan, K. Tran, D. Martizzi, P. Taylor, L. Kewley
- Physics
- 22 August 2016
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 CLASH clusters at…
Dynamics of marginally trapped surfaces in a binary black hole merger: Growth and approach to equilibrium
- Anshu Gupta, B. Krishnan, A. Nielsen, E. Schnetter
- Physics
- 22 January 2018
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 hole horizons…
High-resolution spatial analysis of a z ∼ 2 lensed galaxy using adaptive coadded source-plane reconstruction
- Soniya Sharma, J. Richard, T. Jones
- PhysicsMonthly Notices of the Royal Astronomical Society
- 29 August 2018
Author(s): Sharma, S; Richard, J; Yuan, T; Gupta, A; Kewley, L; Patricio, V; Leethochawalit, N; Jones, TA | Abstract: © 2018 The Author(s). We present spatially resolved analysis of a lensed galaxy,…
Galaxy Merger Fractions in Two Clusters at $z\sim 2$ Using the Hubble Space Telescope
- C. Watson, K. Tran, C. Willmer
- PhysicsThe Astrophysical Journal
- 19 February 2019
We measure the fraction of galaxy-galaxy mergers in two clusters at $z\sim2$ using imaging and grism observations from the {\it Hubble Space Telescope}. The two galaxy cluster candidates were…
Rotating compact objects with magnetic fields
- Anshu Gupta, A. Mishra, H. Mishra, A. Prasanna
- Physics
- 12 May 1998
We consider here the structure of rotating compact objects endowed with a magnetic field in general relativity as models of pulsars. We discuss the structure of rotating stars in the framework of…
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