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Results for “"Jasleen Matharu"”

8 results

Formation of a low-mass galaxy from star clusters in a 600-million-year-old Universe

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Lamiya Mowla, Kartheik G. Iyer, Yoshihisa Asada, G. Desprez et al.

Journal: NatureYear: 2024Citations: 56

Abstract The most distant galaxies detected were seen when the Universe was a scant 5% of its current age. At these times, progenitors of galaxies such as the Milky Way were about 10,000 times less massive. Using the James Webb Space Telescope (JWST) combined with magnification from gravitational le...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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A Steep Decline in the Galaxy Space Density beyond Redshift 9 in the CANUCS UV Luminosity Function

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Chris J. Willott, G. Desprez, Yoshihisa Asada, Ghassan T. E. Sarrouh et al.

Journal: The Astrophysical JournalYear: 2024Citations: 52

Abstract We present a new sample of 158 galaxies at redshift z > 7.5 selected from deep James Webb Space Telescope (JWST) NIRCam imaging of five widely separated sight lines in the CANUCS survey. Two-thirds of the pointings and 80% of the galaxies are covered by 12–14 NIRCam filters, including se...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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An H <i>α</i> view of galaxy buildup in the first 2 Gyr: Luminosity functions at <i>z</i>   ∼  4−6.5 from NIRCam/grism spectroscopy

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Alba Covelo-Paz, Emma Giovinazzo, Pascal A. Oesch, R. A. Meyer et al.

Journal: Astronomy and AstrophysicsYear: 2025Citations: 27

The H α nebular emission line is an optimal tracer for recent star formation in galaxies. With the advent of JWST , this line has recently become observable at z &gt; 3 for the first time. We present a catalog of 1050 H α emitters at 3.7 &lt; z &lt; 6.7 in the GOODS fields obtained from a blind sear...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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Exposing Line Emission: The Systematic Differences of Measuring Galaxy Stellar Masses with JWST NIRCam Medium versus Wide Band Photometry

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Ghassan T. E. Sarrouh, Adam Muzzin, Kartheik G. Iyer, Lamiya Mowla et al.

Journal: The Astrophysical Journal LettersYear: 2024Citations: 14

Abstract Photometrically derived stellar masses are known to suffer from systematic uncertainties, particularly due to nebular emission contributions to the spectral energy distribution (SED). Using James Webb Space Telescope NIRCam imaging from the CAnadian NIRISS Unbiased Cluster Survey, we introd...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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CANUCS/Technicolor Data Release 1: Imaging, Photometry, Slit Spectroscopy, and Stellar Population Parameters*

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Ghassan T. E. Sarrouh, Yoshihisa Asada, Nicholas S. Martis, Chris J. Willott et al.

Journal: The Astrophysical Journal Supplement SeriesYear: 2025Citations: 9

Abstract We present the first data release of the Canadian NIRISS Unbiased Cluster Survey (CANUCS), a JWST Cycle 1 GTO program targeting five lensing clusters and flanking fields in parallel (A370, MACS0416, MACS0417, MACS1149, and MACS1423; survey area ∼100 arcmin 2 ), with NIRCam imaging, NIRISS s...

Physical SciencesPhysics and AstronomyInstrumentationOpen Access
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NGDEEP: The Star Formation and Ionization Properties of Galaxies at 1.7 &lt; z &lt; 3.4

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Lu Shen, Casey Papovich, Jasleen Matharu, Nor Pirzkal et al.

Journal: The Astrophysical Journal LettersYear: 2025Citations: 7

Abstract We use JWST/NIRISS slitless spectroscopy from the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey to investigate the physical condition of 178 star-forming galaxies at 1.7 &lt; z &lt; 3.4. At these redshifts, the deep NGDEEP NIRISS slitless spectroscopy covers the [O i...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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Resolved UV and Optical Color Gradients Reveal Environmental Influence on Galaxy Evolution at Redshift z ∼ 1.6

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W. J. Cramer, Allison Noble, Gregory Rudnick, A. Pigarelli et al.

Journal: The Astrophysical JournalYear: 2024Citations: 4

Abstract The changes in colors across a galaxy are intimately connected to the galaxy’s formation, growth, quenching history, and dust content. A particularly important epoch in the growth of galaxies is near z ∼ 2, often referred to as “cosmic noon,” where galaxies on average reach the peak of thei...

Physical SciencesPhysics and AstronomyAstronomy and AstrophysicsOpen Access
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The Firefly Sparkle: The Earliest Stages of the Assembly of A Milky Way-type Galaxy in a 600 Myr Old Universe

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Lamiya Mowla, Kartheik G. Iyer, Yoshihisa Asada, G. Desprez et al.

Journal: Research SquareYear: 2024Citations: 3

The most distant galaxies detected by JWST are assembling in a Universe that is less than 5% of its present age. At these times, the progenitors of galaxies like the Milky Way are expected to be about 10,000 times less massive than they are now, with masses quite comparable to that of massive globul...

Physical SciencesPhysics and AstronomyInstrumentationOpen Access
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