Lauranne Lanz
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View article: The Spatially Resolved Hot Gas Properties of NGC 1266's AGN-Driven Outflow
The Spatially Resolved Hot Gas Properties of NGC 1266's AGN-Driven Outflow Open
Galactic winds play a critical role in galaxy evolution, yet their structure and driving mechanisms remain poorly understood, especially in low-luminosity AGN (LLAGN) systems. NGC 1266 hosts one such LLAGN, embedded in a massive molecular …
View article: Modeling Star Formation Histories of Changing-look AGN Host Galaxies with Prospector
Modeling Star Formation Histories of Changing-look AGN Host Galaxies with Prospector Open
Changing-look active galactic nuclei (CL-AGNs), are AGNs that appear to transition between Seyfert Type 1 and 2 over periods of months to years. Several mechanisms to trigger these transitions have been proposed, but we have yet to conclus…
View article: The Compton-thick AGN population and the <i>N</i>H distribution of low-mass AGN in our cosmic backyard
The Compton-thick AGN population and the <i>N</i>H distribution of low-mass AGN in our cosmic backyard Open
We present a census of the Compton-thick (CT) active galactic nucleus (AGN) population and the column density ($N_{\rm {H}}$) distribution of AGN in our cosmic backyard using a mid-infrared selected AGN sample within 15 Mpc. The column den…
View article: The Compton-thick AGN Population and the $N_{\rm H}$ Distribution of Low-mass AGN in our Cosmic Backyard
The Compton-thick AGN Population and the $N_{\rm H}$ Distribution of Low-mass AGN in our Cosmic Backyard Open
We present a census of the Compton-thick (CT) active galactic nucleus (AGN) population and the column density ($N_{\rm{H}}$) distribution of AGN in our cosmic backyard using a mid-infrared selected AGN sample within 15 Mpc. The column dens…
View article: HCG 57: Evidence for Shock-heated Intergalactic Gas from X-Rays and Optical Emission Line Spectroscopy
HCG 57: Evidence for Shock-heated Intergalactic Gas from X-Rays and Optical Emission Line Spectroscopy Open
We present Chandra and XMM-Newton X-ray observations of the compact group HCG 57, and optical integral field spectroscopy of the interacting galaxy pair HCG 57A/D. These two spiral galaxies recently suffered an off-axis collision with HCG …
View article: The NuSTAR Local AGN N <sub>H</sub> Distribution Survey (NuLANDS). I. Toward a Truly Representative Column Density Distribution in the Local Universe
The NuSTAR Local AGN N <sub>H</sub> Distribution Survey (NuLANDS). I. Toward a Truly Representative Column Density Distribution in the Local Universe Open
Hard X-ray-selected samples of active galactic nuclei (AGN) provide one of the cleanest views of supermassive black hole accretion but are biased against objects obscured by Compton-thick gas column densities of N H > 10 24 cm −2 . To tack…
View article: Characterizing the Molecular Gas in Infrared Bright Galaxies with CARMA
Characterizing the Molecular Gas in Infrared Bright Galaxies with CARMA Open
We present the CO(1–0) maps of 28 infrared-bright galaxies from the Great Observatories All-Sky Luminous Infrared Galaxy Survey (GOALS) taken with the Combined Array for Research in Millimeter Astronomy (CARMA). We detect 100 GHz continuum…
View article: Pulling Back the Curtain on Shocks and Star Formation in NGC 1266 with Gemini-NIFS
Pulling Back the Curtain on Shocks and Star Formation in NGC 1266 with Gemini-NIFS Open
We present Gemini near-infrared integral field spectrograph K -band observations of the central 400 pc of NGC 1266, a nearby ( D ≈ 30 Mpc) post-starburst galaxy with a powerful multiphase outflow and a shocked interstellar medium. We detec…
View article: The NuSTAR Local AGN $N_{\rm H}$ Distribution Survey (NuLANDS) I: Towards a Truly Representative Column Density Distribution in the Local Universe
The NuSTAR Local AGN $N_{\rm H}$ Distribution Survey (NuLANDS) I: Towards a Truly Representative Column Density Distribution in the Local Universe Open
Hard X-ray-selected samples of Active Galactic Nuclei (AGN) provide one of the cleanest views of supermassive black hole accretion, but are biased against objects obscured by Compton-thick gas column densities of $N_{\rm H}$ $>$ 10$^{24}$ …
View article: Characterizing the Molecular Gas in Infrared Bright Galaxies with CARMA
Characterizing the Molecular Gas in Infrared Bright Galaxies with CARMA Open
We present the CO(1-0) maps of 28 infrared-bright galaxies from the Great Observatories All-Sky Luminous Infrared Galaxy Survey (GOALS) taken with the Combined Array for Research in Millimeter Astronomy (CARMA). We detect 100GHz continuum …
View article: The NuSTAR Serendipitous Survey: The 80 Month Catalog and Source Properties of the High-energy Emitting Active Galactic Nucleus and Quasar Population
The NuSTAR Serendipitous Survey: The 80 Month Catalog and Source Properties of the High-energy Emitting Active Galactic Nucleus and Quasar Population Open
We present a catalog of hard X-ray serendipitous sources detected in the first 80 months of observations by the Nuclear Spectroscopic Telescope Array (NuSTAR). The NuSTAR serendipitous survey 80 month (NSS80) catalog has an unprecedented ∼…
View article: The Evolution of Galaxies and Clusters at High Spatial Resolution with Advanced X-ray Imaging Satellite (AXIS)
The Evolution of Galaxies and Clusters at High Spatial Resolution with Advanced X-ray Imaging Satellite (AXIS) Open
Stellar and black hole feedback heat and disperse surrounding cold gas clouds, launching gas flows off circumnuclear and galactic disks, producing a dynamic interstellar medium. On large scales bordering the cosmic web, feedback drives enr…
View article: The NuSTAR Serendipitous Survey: the 80-month catalog and source properties of the high-energy emitting AGN and quasar population
The NuSTAR Serendipitous Survey: the 80-month catalog and source properties of the high-energy emitting AGN and quasar population Open
We present a catalog of hard X-ray serendipitous sources detected in the first 80 months of observations by the Nuclear Spectroscopic Telescope Array (NuSTAR). The NuSTAR serendipitous survey 80-month (NSS80) catalog has an unprecedented $…
View article: Radio Jet Feedback on the Inner Disk of Virgo Spiral Galaxy Messier 58
Radio Jet Feedback on the Inner Disk of Virgo Spiral Galaxy Messier 58 Open
Spitzer spectral maps reveal a disk of highly luminous, warm (>150 K) H 2 in the center of the massive spiral galaxy Messier 58, which hosts a radio-loud active galactic nucleus (AGN). The inner 2.6 kpc of the galaxy appears to be overrun …
View article: X-ray emission from the taffy (VV254) galaxies and bridge
X-ray emission from the taffy (VV254) galaxies and bridge Open
We present the first X-ray observations of the Taffy galaxies (UGC 12914/5) with the Chandra observatory and detect soft X-ray emission in the region of the gas-rich, radio-continuum-emitting Taffy bridge. The results are compared to Hersc…
View article: Radio Jet Feedback on the Inner Disk of Virgo Spiral Galaxy Messier 58
Radio Jet Feedback on the Inner Disk of Virgo Spiral Galaxy Messier 58 Open
Spitzer spectral maps reveal a disk of highly luminous, warm (>150 K) H2 in the center of the massive spiral galaxy Messier 58, which hosts a radio-loud AGN. The inner 2.6 kpc of the galaxy appears to be overrun by shocks from the radio je…
View article: A High Fraction of Heavily X-Ray-obscured Active Galactic Nuclei
A High Fraction of Heavily X-Ray-obscured Active Galactic Nuclei Open
We present new estimates on the fraction of heavily X-ray-obscured, Compton-thick (CT) active galactic nuclei (AGNs) out to a redshift of z ≤ 0.8. From a sample of 540 AGNs selected by mid-infrared (MIR) properties in observed X-ray survey…
View article: A High Fraction of Heavily X-ray Obscured Active Galactic Nuclei
A High Fraction of Heavily X-ray Obscured Active Galactic Nuclei Open
We present new estimates on the fraction of heavily X-ray obscured, Compton-thick (CT) active galactic nuclei (AGNs) out to a redshift of $z \leq$ 0.8. From a sample of 540 AGNs selected by mid-IR (MIR) properties in observed X-ray survey …
View article: Resolved Molecular Gas Observations of MaNGA Post-starbursts Reveal a Tumultuous Past
Resolved Molecular Gas Observations of MaNGA Post-starbursts Reveal a Tumultuous Past Open
Post-starburst (PSB) galaxies have recently and rapidly quenched their star formation; thus, they are an important way to understand how galaxies transition from star-forming late types to quiescent early types. The recent discovery of lar…
View article: Resolved Molecular Gas Observations of MaNGA Post-starbursts Reveal a Tumultuous Past
Resolved Molecular Gas Observations of MaNGA Post-starbursts Reveal a Tumultuous Past Open
Post-starburst galaxies (PSBs) have recently and rapidly quenched their star-formation, thus they are an important way to understand how galaxies transition from star-forming late-types to quiescent early-types. The recent discovery of lar…
View article: A Multiwavelength View of IC 860: What Is in Action inside Quenching Galaxies <sup>*</sup>
A Multiwavelength View of IC 860: What Is in Action inside Quenching Galaxies <sup>*</sup> Open
We present a multiwavelength study of IC 860, a nearby post-starburst galaxy at the early stage of transitioning from blue and star forming to red and quiescent. Optical images reveal a galaxy-wide, dusty outflow originating from a compact…
View article: A Multiwavelength view of IC 860: What Is in Action inside Quenching Galaxies
A Multiwavelength view of IC 860: What Is in Action inside Quenching Galaxies Open
We present a multiwavelength study of IC 860, a nearby post-starburst galaxy at the early stage of transitioning from blue and star-forming to red and quiescent. Optical images reveal a galaxy-wide, dusty outflow originating from a compact…
View article: Are Active Galactic Nuclei in Post-starburst Galaxies Driving the Change or Along for the Ride?
Are Active Galactic Nuclei in Post-starburst Galaxies Driving the Change or Along for the Ride? Open
We present an analysis of 10 ks snapshot Chandra observations of 12 shocked post-starburst galaxies, which provide a window into the unresolved question of active galactic nuclei (AGN) activity in post-starburst galaxies and its role in th…
View article: Radio Spectra of Luminous, Heavily Obscured WISE-NVSS Selected Quasars
Radio Spectra of Luminous, Heavily Obscured WISE-NVSS Selected Quasars Open
We present radio spectra spanning 0.1–10 GHz for the sample of heavily obscured luminous quasars with extremely red mid-infrared-optical colors and compact radio emission. The spectra are constructed from targeted 10 GHz observations and a…
View article: Detection of a Superluminous Spiral Galaxy in the Heart of a Massive Galaxy Cluster
Detection of a Superluminous Spiral Galaxy in the Heart of a Massive Galaxy Cluster Open
It is well established that brightest cluster galaxies (BCGs), residing in the centers of galaxy clusters, are typically massive and quenched galaxies with cD or elliptical morphology. An optical survey suggested that an exotic galaxy popu…
View article: Are All Post-starbursts Mergers? HST Reveals Hidden Disturbances in the Majority of PSBs
Are All Post-starbursts Mergers? HST Reveals Hidden Disturbances in the Majority of PSBs Open
How do galaxies transform from blue, star-forming spirals to red, quiescent early-type galaxies? To answer this question, we analyzed a set of 26 gas-rich, shocked post-starburst galaxies with Hubble Space Telescope (HST) imaging in B , I …
View article: NuSTAR observations of four nearby X-ray faint AGNs: low luminosity or heavy obscuration?
NuSTAR observations of four nearby X-ray faint AGNs: low luminosity or heavy obscuration? Open
We present NuSTAR (Nuclear Spectroscopic Telescope Array) observations of four active galactic nuclei (AGNs) located within 15 Mpc. These AGNs, namely ESO 121-G6, NGC 660, NGC 3486, and NGC 5195, have observed X-ray luminosities of L2–10 k…
View article: Cosmic evolution of supermassive black holes: A view into the next two\n decades
Cosmic evolution of supermassive black holes: A view into the next two\n decades Open
The discoveries made over the past 20 years by Chandra and XMM-Newton surveys\nin conjunction with multiwavelength imaging and spectroscopic data available in\nthe same fields have significantly changed the view of the supermassive black\n…
View article: Warm H$_2$ as a probe of massive accretion and feedback through shocks and turbulence across cosmic time
Warm H$_2$ as a probe of massive accretion and feedback through shocks and turbulence across cosmic time Open
Galaxy formation depends on a complex interplay between gravitational collapse, gas accretion, merging, and feedback processes. Yet, after many decades of investigation, these concepts are poorly understood. This paper presents the argumen…
View article: Warm H₂ as a probe of massive accretion and feedback through shocks and turbulence across cosmic time
Warm H₂ as a probe of massive accretion and feedback through shocks and turbulence across cosmic time Open
Galaxy formation depends on a complex interplay between gravitational collapse, gas accretion, merging, and feedback processes. Yet, after many decades of investigation, these concepts are poorly understood. This paper presents the argumen…