Explanipedia

Retrieving the hot circumgalactic medium physics from the X-ray radial profile from eROSITA with an IlustrisTNG-based forward model Open

Soumya Shreeram, Johan Comparat, A. Merloni, G. Ponti, P. Popesso , et al. · 2025

Aims. Recent eROSITA measurements of the radial profiles of the hot circumgalactic medium (CGM) in the Milky Way stellar mass (MW-mass) regime provide us with a new benchmark to constrain the hot gas around MW-mass central and satellite ga…

The baryon census and the mass-density of stars, neutral gas, and hot gas as a function of halo mass Open

A. Dev, Simon P. Driver, M. Meyer, A. S. G. Robotham, Danail Obreschkow , et al. · 2024

We study the stellar, neutral gas content within haloes over a halo mass range $10^{10} \text{ to } 10^{15.5} \text{M}_\odot$ and hot X-ray gas content over a halo mass range $10^{12.8} \text{ to } 10^{15.5} \text{M}_\odot$ in the local un…

The baryon census and the mass-density of stars, neutral gas, and hot gas as a function of halo mass Open

A. Dev, Simon P. Driver, M. Meyer, A. S. G. Robotham, Danail Obreschkow , et al. · 2024

We study the stellar, neutral gas content within halos over a halo mass range $10^{10} \text{ to } 10^{15.5} \text{M}_\odot$ and hot X-ray gas content over a halo mass range $10^{12.8} \text{ to } 10^{15.5} \text{M}_\odot$ in the local uni…

The SRG/eROSITA All-Sky Survey Open

Y. E. Bahar, Esra Bülbül, V. Ghirardini, J. S. Sanders, Xiaoyuan Zhang , et al. · 2024

Context . Galaxy groups lying between galaxies and galaxy clusters in the mass spectrum of dark matter halos play a crucial role in the evolution and formation of the large-scale structure. Their shallower potential wells compared to clust…

The hot circumgalactic medium in the eROSITA All-Sky Survey I. X-ray surface brightness profiles Open

Yi Zhang, Johan Comparat, G. Ponti, A. Meloni, K. Nandra , et al. · 2024

The circumgalactic medium (CGM) provides the material needed for galaxy formation and influences galaxy evolution. The hot ($T>10^6K$) CGM is poorly detected around galaxies with stellar masses ($M_*$) lower than $3\times10^{11}M_\odot$ du…

The main sequence of star-forming galaxies across cosmic times Open

P. Popesso, Alice Concas, G. Cresci, Sirio Belli, G. Rodighiero , et al. · 2022

By compiling a comprehensive census of literature studies, we investigate the evolution of the main sequence (MS) of star-forming galaxies (SFGs) in the widest range of redshift (0 < z < 6) and stellar mass (108.5–1011.5 M⊙) ever pro…

A panchromatic spatially resolved analysis of nearby galaxies – II. The main sequence – gas relation at sub-kpc scale in grand-design spirals Open

L. Morselli, G. Rodighiero, A Enia, E. Corbelli, V. Casasola , et al. · 2020

In this work, we analyse the connection between gas availability and the position of a region with respect to the spatially resolved main-sequence (MS) relation. Following the procedure presented in Enia et al. (2020), for a sample of five…

The dust and cold gas content of local star-forming galaxies Open

P. Popesso, Alice Concas, L. Morselli, G. Rodighiero, A Enia , et al. · 2020

We use dust masses (Mdust) derived from far-infrared data and molecular gas masses (Mmol) based on CO luminosity to calibrate proxies based on a combination of the galaxy Balmer decrement, disc inclination, and gas metallicity. We use such…

A panchromatic spatially resolved analysis of nearby galaxies – I. Sub-kpc-scale main sequence in grand-design spirals Open

A Enia, G. Rodighiero, L. Morselli, V. Casasola, S. Bianchi , et al. · 2020

We analyse the spatially resolved relation between stellar mass (M⋆) and star formation rate (SFR) in disc galaxies (i.e. the main sequence, MS). The studied sample includes eight nearby face-on grand-design spirals, e.g. the descendant of…

A MUSE inquiry into the physical processes taking place within the Abell 2667 Brightest Cluster Galaxy Open

Edoardo Iani, G. Rodighiero, J. Fritz, G. Cresci, C. Mancini , et al. · 2019

Brightest cluster galaxies (BCGs) residing in cool-core clusters are known to be the stage of intricate baryon cycle phenomena (e.g. gas inflows, AGN outflows, star formation feedback). The scenarios describing the observed properties of t…

The main sequence of star-forming galaxies – II. A non-evolving slope at the high-mass end Open

P. Popesso, L. Morselli, Alice Concas, C. Schreiber, G. Rodighiero , et al. · 2019

By using the deepest available mid- and far-infrared surveys in the CANDELS, GOODS, and COSMOS fields we study the evolution of the main sequence (MS) of star-forming galaxies (SFGs) from z ∼ 0 to ∼ 2.5 at stellar masses larger than 1010 M…

Stellar mass–halo mass relation for the brightest central galaxies of X-ray clusters since <i>z</i> ∼ 0.65 Open

G. Erfanianfar, A. Finoguenov, K Furnell, P. Popesso, A. Biviano , et al. · 2019

We present the brightest cluster galaxies (BCGs) catalog for SPectroscoic IDentification of eROSITA Sources (SPIDERS) DR14 cluster program value-added catalog. We list the 416 BCGs identified as part of this process, along with their stell…

Inquiring into the nature of the Abell 2667 brightest cluster galaxy: physical properties from MUSE Open

Edoardo Iani, G. Rodighiero, J. Fritz, G. Cresci, C. Mancini , et al. · 2019

Based on HST and MUSE data, we probe the stellar and gas properties (i.e. kinematics, stellar mass, star formation rate) of the radio-loud brightest cluster galaxy (BCG) located at the centre of the X-ray-luminous cool-core cluster Abell 2…

Spatial distribution of stellar mass and star formation activity at 0.2 < <i>z</i> < 1.2 across and along the main sequence Open

L. Morselli, P. Popesso, A. Cibinel, Pascal A. Oesch, Mireia Montes , et al. · 2019

High-resolution multi-wavelength photometry is crucial to explore the spatial distribution of star formation in galaxies and understand how these evolve. To this aim, in this paper we exploit the deep, multi-wavelength Hubble Space Telesco…

A new empirical method to estimate the molecular gas mass in galaxies Open

Alice Concas, P. Popesso · 2019

We find a tight correlation between the dust extinction, traced by the Balmer Decrement (BD = H α/H β), the CO(1-0) line luminosity (LCO), and total molecular gas mass (MH2) in a sample of 222 local star-forming galaxies drawn from the xCO…

Two-face(s): ionized and neutral gas winds in the local Universe Open

Alice Concas, P. Popesso, M. Brusa, V. Mainieri, D. Thomas · 2019

We present a comprehensive study of the Na I λ 5890, 5895 (Na I D) resonant lines in the Sloan Digital Sky Survey (SDSS, DR7) spectroscopic sample to look for neutral gas outflows in the local galaxies. Individual galaxy spectra are stacke…

The main sequence of star-forming galaxies – I. The local relation and its bending Open

P. Popesso, Alice Concas, L. Morselli, C. Schreiber, G. Rodighiero , et al. · 2018

By using a set of different star formation rate (SFR) indicators, including Wide-field Infrared Survey Explorer (WISE) mid-infrared and H a emission, we study the slope of the main sequence (MS) of local star-forming galaxies at stellar ma…

Two-Face: Neutral And Ionized Light Breeze In The Local Universe Open

Alice Concas, P. Popesso, M. Brusa, V. Mainieri, Claudia Maraston , et al. · 2018

The physical mechanism(s) driving the "quenching" of the star formation activity in galaxies, remains one of the least understood puzzles in the galaxy formation theoretical framework. According to the most recent theoretical models, the e…

Light breeze in the local Universe Open

Alice Concas, P. Popesso, M. Brusa, V. Mainieri, G. Erfanianfar , et al. · 2017

We analyze a complete spectroscopic sample of galaxies ($\\sim$600,000 ) drawn\nfrom Sloan Digital Sky Survey (SDSS, DR7) to look for evidence of galactic\nwinds in the local Universe. We focus on the shape of the [OIII]$\\lambda$5007\nemi…

Abell 315: reconciling cluster mass estimates from kinematics, X-ray, and lensing Open

A. Biviano, P. Popesso, J. P. Dietrich, Y.-Y. Zhang, G. Erfanianfar , et al. · 2017

\n Context. Determination of cluster masses is a fundamental tool for cosmology. Comparing mass estimates obtained by different probes allows to understand possible systematic uncertainties.\n Aims. The cluster Abell 315 is an interesting …

Bulges and discs in the local Universe. Linking the galaxy structure to star formation activity Open

L. Morselli, P. Popesso, G. Erfanianfar, Alice Concas · 2017

\n We use a sample built on the SDSS DR7 catalogue and the bulge-disc decomposition of Simard et al. (2011, ApJS, 196, 11) to study how the bulge and disc components contribute to the parent galaxy’s star formation activity, by determining…

The effect of disc inclination on the main sequence of star-forming galaxies Open

L. Morselli, A. Renzini, P. Popesso, G. Erfanianfar · 2016

We use the Sloan Digital Sky Survey (SDSS) database to explore the effect of\nthe disk inclination angle on the derived star formation rate (SFR), hence on\nthe slope and width of the Main Sequence (MS) relation for star-forming\ngalaxies.…

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