Alessandro Peca
YOU?
Author Swipe
View article: BASS. LIV. Physical Properties of AGN-hosting Galaxy Mergers from Multiwavelength SED Fitting
BASS. LIV. Physical Properties of AGN-hosting Galaxy Mergers from Multiwavelength SED Fitting Open
Galaxy mergers are believed to play an important role in triggering rapid supermassive black hole (SMBH) growth. As merging nuclei approach each other, the physical properties of the participating galaxies and the associated SMBH growth ar…
View article: Insights for Early Massive Black Hole Growth from JWST Detection of the [Ne v] <i>γ</i>3427 Emission Line
Insights for Early Massive Black Hole Growth from JWST Detection of the [Ne v] <i>γ</i>3427 Emission Line Open
We use the narrow [Ne v] λ 3427 emission line detected in the recently published JWST spectra of two galaxies, at z ≃ 6.9 and 5.6, to study the key properties of the active galactic nuclei (AGN) and the supermassive black holes (SMBHs) in …
View article: BASS LIV. Physical Properties of AGN-Hosting Galaxy Mergers from Multiwavelength SED Fitting
BASS LIV. Physical Properties of AGN-Hosting Galaxy Mergers from Multiwavelength SED Fitting Open
Galaxy mergers are believed to play an important role in triggering rapid supermassive black hole (SMBH) growth. As merging nuclei approach each other, the physical properties of the participating galaxies and the associated SMBH growth ar…
View article: BASS. LII. The Prevalence of Double-peaked Broad Lines at Low Accretion Rates among Hard X-Ray Selected Active Galactic Nuclei
BASS. LII. The Prevalence of Double-peaked Broad Lines at Low Accretion Rates among Hard X-Ray Selected Active Galactic Nuclei Open
A fraction of active galactic nuclei (AGN) have double-peaked H α , H β, and Mg II broad lines attributed to emission from rotating gas in the accretion disk. Using optical spectroscopy of a flux-limited sample of AGN selected via ultrahar…
View article: VAR-PZ: Constraining the Photometric Redshifts of Quasars using Variability
VAR-PZ: Constraining the Photometric Redshifts of Quasars using Variability Open
The Vera C. Rubin Observatory LSST is expected to discover tens of millions of new Active Galactic Nuclei (AGNs). The survey's exceptional cadence and sensitivity will enable UV/optical/NIR monitoring of a significant fraction of these obj…
View article: A big red dot at cosmic noon
A big red dot at cosmic noon Open
We report the discovery of a little red dot (LRD), dubbed BiRD (‘big red dot’), at z ∼ 2.33 in the field around the z ∼ 6.3 quasar SDSS J1030+0524. Using JWST/NIRCam images, we identified it as a bright outlier in the F 200 W − F 356 W col…
View article: BASS. LIII. The Eddington Ratio as the Primary Regulator of the Fraction of X-Ray Emission in Active Galactic Nuclei
BASS. LIII. The Eddington Ratio as the Primary Regulator of the Fraction of X-Ray Emission in Active Galactic Nuclei Open
Active galactic nuclei (AGN) emit radiation via accretion across the entire energy spectrum. While the standard disk and corona model can somewhat describe this emission, it fails to predict specific features such as the soft X-ray excess,…
View article: BASS. XLIX. Characterization of Highly Luminous and Obscured AGNs: Local X-Ray and [Ne <scp>V</scp>]<i>λ</i>3426 Emission in Comparison with the High-redshift Universe
BASS. XLIX. Characterization of Highly Luminous and Obscured AGNs: Local X-Ray and [Ne <span>V</span>]<i>λ</i>3426 Emission in Comparison with the High-redshift Universe Open
We present a detailed analysis of the most luminous and obscured active galactic nuclei (AGNs) detected in the ultra-hard X-ray band (14–195 kev) by the Swift/Burst Alert Telescope. Our sample comprises 21 X-ray luminous ( …
View article: NuSTAR Detection of an Absorption Feature in ESP 39607: Evidence for an Ultrafast Inflow?
NuSTAR Detection of an Absorption Feature in ESP 39607: Evidence for an Ultrafast Inflow? Open
We report the serendipitous discovery of an absorption feature at 4.8 keV in the NuSTAR spectra of ESP 39607, a Seyfert 2 galaxy at z = 0.201, observed in 2023 May and 2024 August. The feature is detected in both observations with individu…
View article: BASS. XLVIII. [Ne <scp>V</scp>] <i>λ</i>3427 Emission in Powerful Nearby Active Galactic Nuclei
BASS. XLVIII. [Ne <span>V</span>] <i>λ</i>3427 Emission in Powerful Nearby Active Galactic Nuclei Open
We investigate the high-ionization, narrow [Ne V ] λ 3427 line emission in a sample of over 340 ultrahard X-ray (14–195 keV) selected active galactic nuclei (AGN) drawn from the BAT AGN Spectroscopic Survey project. The analysis includes m…
View article: Nuclear Spectral Energy Distributions of Luminous Infrared Galaxies
Nuclear Spectral Energy Distributions of Luminous Infrared Galaxies Open
We present nuclear (100–150 pc) spectral energy distributions (SEDs) for a sample of 23 nearby luminous infrared galaxies hosting a total of 28 nuclei. We gather aperture photometry from high-resolution X-ray to submillimeter data for each…
View article: BASS LIII: The Eddington Ratio as the Primary Regulator of the Fraction of X-ray Emission in Active Galactic Nuclei
BASS LIII: The Eddington Ratio as the Primary Regulator of the Fraction of X-ray Emission in Active Galactic Nuclei Open
Active galactic nuclei (AGN) emit radiation via accretion across the entire energy spectrum. While the standard disk and corona model can somewhat describe this emission, it fails to predict specific features such as the soft X-ray excess,…
View article: Tracing High-<i>z</i> Galaxies in X-Rays with JWST and Chandra
Tracing High-<i>z</i> Galaxies in X-Rays with JWST and Chandra Open
We leverage James Webb Space Telescope (JWST) data from the COSMOS-Web survey in order to provide updated measurements on the auto-power spectrum of the now resolved cosmic near-infrared background (CIB) and its coherence with the unresolv…
View article: A big red dot at cosmic noon
A big red dot at cosmic noon Open
We report the discovery of a little red dot (LRD), dubbed BiRD ('big red dot'), at $z=2.33$ in the field around the $z=6.3$ quasar SDSSJ1030+0524. Using NIRCam images, we identified it as a bright outlier in the $F200W-F356W$ color vs $F35…
View article: Nuclear Spectral Energy Distributions of Luminous Infrared Galaxies
Nuclear Spectral Energy Distributions of Luminous Infrared Galaxies Open
We present nuclear (100-150 pc) spectral energy distributions (SEDs) for a sample of 23 nearby luminous infrared galaxies hosting a total of 28 nuclei. We gather aperture photometry from high-resolution X-ray to submillimeter data for each…
View article: BASS. XLV. Quantifying Active Galactic Nuclei Selection Effects in the Chandra COSMOS-legacy Survey with BASS
BASS. XLV. Quantifying Active Galactic Nuclei Selection Effects in the Chandra COSMOS-legacy Survey with BASS Open
Deep extragalactic X-ray surveys, such as the Chandra COSMOS-Legacy field (CCLS), are prone to be biased against active galactic nuclei (AGN) with high column densities due to their lower count rates at a given luminosity. To quantify this…
View article: BASS. XLVII. 22 GHz Radio Atlas of Swift-BAT Selected AGN
BASS. XLVII. 22 GHz Radio Atlas of Swift-BAT Selected AGN Open
We present the third phase of the largest high-frequency, high-resolution imaging survey of 231 nearby, hard X-ray selected active galactic nuclei (AGNs), with a very high 98% ± 1% detection fraction. This survey presents VLA 22 GHz radio …
View article: Estimating Black Hole Masses in Obscured Active Galactic Nuclei from X-Ray and Optical Emission Line Luminosities
Estimating Black Hole Masses in Obscured Active Galactic Nuclei from X-Ray and Optical Emission Line Luminosities Open
We test a novel method for estimating black hole masses ( M BH ) in obscured active galactic nuclei (AGN) that uses proxies to measure the FWHM of broad H α (FWHM bH α ) and the accretion disk luminosity at 5100 Å ( λL 5100 Å ). Using a pu…
View article: Tracing High-z Galaxies in X-rays with JWST and Chandra
Tracing High-z Galaxies in X-rays with JWST and Chandra Open
We leverage JWST data from the COSMOS-Web Survey in order to provide updated measurements on the auto-power spectrum of the now resolved Cosmic Infrared Background (CIB) and its coherence with the unresolved soft Cosmic X-ray Background (C…
View article: BASS XLV: Quantifying AGN Selection Effects in the Chandra COSMOS-Legacy Survey with BASS
BASS XLV: Quantifying AGN Selection Effects in the Chandra COSMOS-Legacy Survey with BASS Open
Deep extragalactic X-ray surveys, such as the Chandra COSMOS-Legacy field (CCLS), are prone to be biased against active galactic nuclei (AGN) with high column densities due to their lower count rates at a given luminosity. To quantify this…
View article: BASS XLVII: 22 GHz Radio Atlas of Swift-BAT Selected AGN
BASS XLVII: 22 GHz Radio Atlas of Swift-BAT Selected AGN Open
We present the third phase of the largest high-frequency, high-resolution imaging survey of 231 nearby, hard X-ray selected AGN, with a very high $98 \pm 1\%$ detection fraction. This survey presents VLA 22 GHz radio observations with 1" s…
View article: Estimating Black Hole Masses in Obscured AGN from X-ray and Optical Emission Line Luminosities
Estimating Black Hole Masses in Obscured AGN from X-ray and Optical Emission Line Luminosities Open
We test a novel method for estimating black hole masses ($M_{\rm BH}$) in obscured active galactic nuclei (AGN) that uses proxies to measure the full-width half maximum of broad H$α$ (FWHM$_{\rm bHα}$) and the accretion disk luminosity at …
View article: Stripe 82X Data Release 3: Multiwavelength Catalog with New Spectroscopic Redshifts and Black Hole Masses
Stripe 82X Data Release 3: Multiwavelength Catalog with New Spectroscopic Redshifts and Black Hole Masses Open
We present the third catalog release of the wide-area (31.3 deg 2 ) Stripe 82 X-ray survey. This catalog combines previously published X-ray source properties with multiwavelength counterparts and photometric redshifts, presents 343 new sp…
View article: Stripe 82-XL: The ∼54.8 deg<sup>2</sup> and ∼18.8 Ms Chandra and XMM-Newton Point-source Catalog and Number of Counts
Stripe 82-XL: The ∼54.8 deg<sup>2</sup> and ∼18.8 Ms Chandra and XMM-Newton Point-source Catalog and Number of Counts Open
We present an enhanced version of the publicly available Stripe 82X catalog (S82-XL), featuring a comprehensive set of 22,737 unique X-ray point sources identified with a significance ≳4 σ . This catalog is four times larger than the origi…
View article: Stripe 82-XL: the $\sim$54.8 deg$^2$ and $\sim$18.8 Ms Chandra and XMM-Newton point source catalog and number of counts
Stripe 82-XL: the $\sim$54.8 deg$^2$ and $\sim$18.8 Ms Chandra and XMM-Newton point source catalog and number of counts Open
We present an enhanced version of the publicly-available Stripe 82X catalog (S82-XL), featuring a comprehensive set of 22,737 unique X-ray point sources identified with a significance $\gtrsim 4σ$. This catalog is four times larger than th…
View article: X-ray Redshifts for Obscured Active Galactic Nuclei with AXIS Deep and Intermediate Surveys
X-ray Redshifts for Obscured Active Galactic Nuclei with AXIS Deep and Intermediate Surveys Open
This study presents the capabilities of the AXIS telescope in estimating redshifts from X-ray spectra alone (X-ray redshifts, XZs). Through extensive simulations, we establish that AXIS observations enable reliable XZ estimates for more th…
View article: X-ray Redshifts for Obscured Active Galactic Nuclei with AXIS Deep and Intermediate Surveys
X-ray Redshifts for Obscured Active Galactic Nuclei with AXIS Deep and Intermediate Surveys Open
This study presents the capabilities of the AXIS telescope in estimating redshifts from X-ray spectra alone (X-ray redshifts, XZs). Through extensive simulations, we establish that AXIS observations enable reliable XZ estimates for more th…
View article: Stripe 82X Data Release 3: Multiwavelength Catalog with New Spectroscopic Redshifts and Black Hole Masses
Stripe 82X Data Release 3: Multiwavelength Catalog with New Spectroscopic Redshifts and Black Hole Masses Open
We present the third catalog release of the wide-area (31.3 deg$^2$) Stripe 82 X-ray survey. This catalog combines previously published X-ray source properties with multiwavelength counterparts and photometric redshifts, presents 343 new s…
View article: The Accretion History of AGN: The Spectral Energy Distributions of X-Ray-luminous Active Galactic Nuclei
The Accretion History of AGN: The Spectral Energy Distributions of X-Ray-luminous Active Galactic Nuclei Open
Spectral energy distributions (SEDs) from X-ray to far-infrared (FIR) wavelengths are presented for a sample of 1246 X-ray-luminous active galactic nuclei (AGNs; L 0.5–10 keV > 10 43 erg s −1 ), with z spec < 1.2, selected from Stripe 82X,…
View article: The Accretion History of AGN: The Spectral Energy Distributions of X-ray Luminous AGN
The Accretion History of AGN: The Spectral Energy Distributions of X-ray Luminous AGN Open
Spectral energy distributions (SEDs) from X-ray to far-infrared (FIR) wavelengths are presented for a sample of 1246 X-ray luminous active galactic nuclei (AGN; $L_{0.5-10\rm{keV}}>10^{43}$ erg s$^{-1}$), with $z_{\rm{spec}}<1.2$, selected…