A5052066301- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Plant Water Relations and Carbon Dynamics
- Astrophysics and Star Formation Studies
- Scientific Research and Discoveries
- Remote Sensing in Agriculture
York University
2022-2024
Abstract Despite the ubiquity of clumpy star-forming galaxies at high-redshift, origin clumps are still largely unconstrained due to limited observations that can validate mechanisms for clump formation. We postulate if form accretion metal-poor gas leads violent disk instability, should have lower gas-phase metallicities compared nonclumpy galaxies. In this work, we obtain near-infrared spectrum 42 and similar masses, star formation rates, colors z ≈ 0.7 using Gemini Near-Infrared...
Abstract The resolved mass assembly of Milky Way–mass galaxies has been previously studied in simulations, the local Universe, and at higher redshifts using infrared (IR) light profiles. To better characterize Way analogs (MWAs), as well their changes star formation rate (SFR) color gradients, we construct stellar SFR maps MWA progenitors selected with abundance matching techniques up to z ∼2 deep, multiwavelength imaging data from Hubble Frontier Fields. Our results profiles agree previous...
Abstract One of the challenges in understanding quenching processes for galaxies is connecting progenitor star-forming populations to their descendant quiescent over cosmic time. Here we attempt a novel approach this challenge by assuming that underlying stellar mass distribution not significantly altered during environmental-quenching solely affect gas content cluster galaxies, such as strangulation and ram pressure stripping. Using deep, high-resolution photometry Hubble Frontier Fields,...
Abstract Compact star-forming clumps observed in distant galaxies are often suggested to play a crucial role galaxy assembly. In this paper, we use novel approach of applying finite-resolution deconvolution on ground-based images the COSMOS field resolve 20,185 (SFGs) at 0.5 < z 2 an angular resolution 0.″3 and study their clump fractions. A comparison between deconvolved HST across four different filters shows good agreement validates image deconvolution. We model spectral energy...
We present a resolved study of $>900$ progenitors Milky Way Analogs (MWAs) at $0.3<z<5$ selected with abundance matching in the ten fields Canadian NIRISS Unbiased Cluster Survey (CANUCS). Utilizing 18-21 bands deep NIRCam, NIRISS, and HST photometry, we create stellar mass maps star formation rate via spectral energy distribution fitting Dense Basis. examine their specific (sSFR) profiles as function galactocentric radius, find clear evidence for inside-out assembly. The total $M_\star$...
The resolved mass assembly of Milky-Way-mass galaxies has been previously studied in simulations, the local universe, and at higher redshifts using infrared (IR) light profiles. To better characterize Milky Way Analogues (MWAs), as well their changes star-formation rate color gradients, we construct stellar maps MWA progenitors selected with abundance matching techniques up to z $\sim$ 2 deep, multi-wavelength imaging data from Hubble Frontier Fields. Our results profiles agree previous...
Despite the ubiquity of clumpy star-forming galaxies at high-redshift, origin clumps are still largely unconstrained due to limited observations that can validate mechanisms for clump formation. We postulate if form accretion metal-poor gas leads violent disk instability, should have lower gas-phase metallicities compared non-clumpy galaxies. In this work, we obtain near-infrared spectrum 42 and similar masses, SFRs, colors $z\approx0.7$ using Gemini Near-Infrared Spectrograph (GNIRS) infer...