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Showing 1 to 7 of 7 for “"extragalactic astrophysics"”.
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New Approaches to Map-Making for Cosmic Microwave Background Observations
Extragalactic point sources are an additional foreground contaminant in CMB maps; proper identification and removal of these sources is a crucial step in the analysis pipeline. From the standpoint of Extragalactic Astrophysics, point source data from the WMAP instrument can provide important …
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Connecting simulations and observations in galaxy formation studies
Observational and computational extragalactic astrophysics are two fields of research that study a similar subject from different perspectives. Observational extragalactic astrophysics aims, by recovering the spectral energy distribution of galaxies at different wavelengths, to reliably measure …
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Insights into the nature of dust attenuation in relation to galaxy evolution from local to cosmic noon galaxies
The dust attenuation in galaxies depends on numerous processes and physical properties, such as the stellar mass, the star formation rate (SFR), the metallicity, the star formation history (SFH), and the star-dust geometry, which also involves morphology and inclination. Throughout the work in this …
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New Insights on the Evolutionary Mechanisms of Local and Distant Galaxies
Galaxies can be roughly characterised by falling into two distinct populations, blue, star-forming, disc dominated and red, quiescent elliptical bulge dominated systems. These populations are defined via multiple scaling relations such as the star-forming main sequence, Schmidt-Kennicutt relation …
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Observational Studies of Rare Quasar Outflows: the FeLoBALs
The absorption spectra of quasar outflows are studied in order to determine their kinematic and energetic properties and how they affect their host galaxy and its surroundings. If an outflow is sufficiently powerful to have an effect, a process known as active galactic nucleus (AGN) feedback, it …
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The Universal Rotation Curve of Disk Galaxies
In the standard model of cosmology, the formation and evolution of dark matter halos plays an essential role in galaxy development. However, the response of the halo to internal baryonic processes is difficult to observe. We tackle this problem through an investigation of the Universal Rotation …
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The Universality of Intrinsic Flattening in Extragalactic Stellar Disks
Highly inclined (edge-on) galaxies provide the unique perspective necessary to constrain the intrinsic flattening, 𝑐/𝑎, of galactic disks. We use “dust-free” 3.6 𝜇m maps of 141 edge-on spiral galaxies from the Spitzer Survey of Stellar Structure in Galaxies (S4G) and its early-type galaxy extension …