Michaela Hirschmann

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Publications associées (87)

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Investigating the Impact of Supernova Feedback on Satellites in Elliptical Galaxies

Michaela Hirschmann

We investigate the influence of supernova (SN) feedback on the satellites of elliptical host galaxies using hydrodynamic simulations. Utilizing a modified version of the GADGET-3 code, we perform cosmological zoom-in simulations of 11 elliptical galaxies w ...

2025

A Census from JWST of Extreme Emission-line Galaxies Spanning the Epoch of Reionization in CEERS

Michaela Hirschmann

We present a sample of 1165 extreme emission-line galaxies (EELGs) at 4 < z < 9 selected using James Webb Space Telescope (JWST) NIRCam photometry in the Cosmic Evolution Early Release Science (CEERS) program. We use a simple method to photometrically iden ...

2024

On the origin of globular clusters in a hierarchical universe

Michaela Hirschmann

We present an end-to-end description of the formation of globular clusters (GCs) combining a treatment for their formation and dynamical evolution within galaxy haloes with a state-of-the-art semi-analytic simulation of galaxy formation. Our approach allow ...

2024

The Impact of Ram Pressure on Cluster Galaxies, Insights From Gaea and Tng

Michaela Hirschmann

Ram pressure stripping (RPS) has a non-negligible impact on the gas content of cluster galaxies. We used the semi-analytic model GAEA and the hydro-simulation TNG to investigate whether cluster galaxies suffer from strong RPS that is sufficient to remove a ...

EDP SCIENCES S A2025

CEERS Key Paper. VIII. Emission-line Ratios from NIRSpec and NIRCam Wide-Field Slitless Spectroscopy at z > 2

Michaela Hirschmann

We use James Webb Space Telescope Near-Infrared Camera Wide Field Slitless Spectroscopy (NIRCam WFSS) and the Near-Infrared spectrograph (NIRSpec) in the Cosmic Evolution Early Release survey to measure rest-frame optical emission-line ratios of 155 galaxi ...

Iop Publishing Ltd2024

Characterising the z ≈ 7.66 Type-II AGN candidate SMACS S06355 using BEAGLE-AGN and JWST NIRSpec/NIRCam

Michaela Hirschmann, Adèle Marie Françoise Plat

The presence of Active Galactic Nuclei (AGN) in low mass (M⋆ ≲ 109 M⊙) galaxies at high redshift has been established, and it is important to characterise these objects and the impact of their feedback on the host galaxies. In this paper we apply the Spect ...

Oxford University Press (OUP)2025

What Are the Pillars of Reionization? Revising the AGN Luminosity Function at z ∼ 5

Michaela Hirschmann

In the past, high-z active galactic nuclei (AGNs) were given a minor role as possible drivers of reionization, despite initial evidence in favor of their large space densities at low luminosities by Chandra and the Hubble Space Telescope. Recent observatio ...

IOP Publishing Ltd2024