J. Goupy
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View article: Thermal Sunyaev-Zel’dovich effect at the core of CL J1226.9+3332 revealed by NOEMA
Thermal Sunyaev-Zel’dovich effect at the core of CL J1226.9+3332 revealed by NOEMA Open
We present first detailed maps of the thermal Sunyaev-Zel’dovich (tSZ) effect on a z = 0.89 cluster with the NOrthern Extended Millimeter Array (NOEMA). The high sensitivity of these observations enabled the effective identification and re…
View article: The NIKA2 cosmological legacy survey at 2 mm: catalogs, colors, redshift distributions, and implications for deep surveys
The NIKA2 cosmological legacy survey at 2 mm: catalogs, colors, redshift distributions, and implications for deep surveys Open
Millimeter galaxy surveys are particularly effective in detecting dusty star-forming galaxies at high redshift. While such observations are typically conducted at ~1mm, studies suggest that 2mm may be better suited for selecting sources at…
View article: Overdense fireworks in GOODS-N: Unveiling a record number of massive dusty star forming galaxies at z$\sim$5.2 with the N2CLS
Overdense fireworks in GOODS-N: Unveiling a record number of massive dusty star forming galaxies at z$\sim$5.2 with the N2CLS Open
As part of the N2CLS Survey, we have identified a remarkable overdensity of eight bright dusty star-forming galaxies at z$\sim$5.2 in the GOODS-N field. Three of these galaxies, N2GN_1_01, 06, and 23 (known as GN10, HDF850.1, and S3, respe…
View article: NIKA2 Cosmological Legacy Survey
NIKA2 Cosmological Legacy Survey Open
Clusters of galaxies, formed in the latest stages of structure formation, are unique cosmological probes. With the advent of large CMB surveys like those from the Planck satellite, the ACT and SPT telescopes, we now have access to a large …
View article: Exploiting high-resolution NIKA2 data to study the intracluster medium and dynamical state of ACT-CL J0240.0+0116
Exploiting high-resolution NIKA2 data to study the intracluster medium and dynamical state of ACT-CL J0240.0+0116 Open
It is crucial to have a detailed understanding of the intracluster medium (ICM) to infer precise cluster physics, such as the cluster’s dynamical state, in order to carry out cluster-based cosmological studies. This knowledge limits the ac…
View article: Interpreting Millimeter Emission from IMEGIN galaxies NGC 2146 and NGC 2976
Interpreting Millimeter Emission from IMEGIN galaxies NGC 2146 and NGC 2976 Open
The millimeter continuum emission from galaxies provides important information about cold dust, its distribution, heating, and role in their InterStellar Medium (ISM). This emission also carries an unknown portion of the free-free and sync…
View article: KISS: instrument description and performance
KISS: instrument description and performance Open
Kinetic inductance detectors (KIDs) have been proven as reliable systems for astrophysical observations, especially in the millimetre range. Their compact size enables to optimally fill the focal plane, thus boosting sensitivity. The KISS …
View article: Magnetic field tunable spectral response of kinetic inductance detectors
Magnetic field tunable spectral response of kinetic inductance detectors Open
We tune the onset of optical response in aluminium kinetic inductance detectors from a natural cutoff frequency of 90 GHz to 60 GHz by applying an external magnetic field. The change in spectral response is due to the decrease of the super…
View article: Toward the first cosmological results of the NIKA2 Sunyaev-Zeldovich Large Program: The SZ-Mass scaling relation
Toward the first cosmological results of the NIKA2 Sunyaev-Zeldovich Large Program: The SZ-Mass scaling relation Open
In Sunyaev-Zeldovich (SZ) cluster cosmology, two tools are needed to be able to exploit data from large scale surveys in the millimeter-wave domain. An accurate description of the IntraCluster Medium (ICM) pressure profile is needed along …
View article: CONCERTO: instrument model of Fourier transform spectroscopy, white-noise components
CONCERTO: instrument model of Fourier transform spectroscopy, white-noise components Open
Modern astrophysics relies on intricate instrument setups to meet the demands of sensitivity, sky coverage, and multi-channel observations. An example is the CONCERTO project, employing advanced technology like kinetic inductance detectors…
View article: CONCERTO at APEX On-sky performance in continuum
CONCERTO at APEX On-sky performance in continuum Open
Context . CarbON CII line in post-rEionisation and ReionisaTiOn epoch (CONCERTO) instrument is a low-resolution mapping spectrometer based on lumped element kinetic inductance detector (LEKIDs) technology, operating at 130-310 GHz. It was …
View article: CONCERTO at APEX -- On-sky performance in continuum
CONCERTO at APEX -- On-sky performance in continuum Open
We present the data-processing algorithms and the performance of CONCERTO (CarbON CII line in post-rEionisation and ReionisaTiOn epoch) in continuum by analysing the data from the commissioning and scientific observations. The beam pattern…
View article: Aluminum nuclear demagnetization refrigerator for powerful continuous\n cooling
Aluminum nuclear demagnetization refrigerator for powerful continuous\n cooling Open
Many laboratories routinely cool samples to 10 mK, but relatively few can\ncool condensed matter below 1 mK. Easy access to the microkelvin range would\npropel fields such as quantum sensors and quantum materials. Such temperatures\nare ac…
View article: Faint millimeter NIKA2 dusty star-forming galaxies: finding the high-redshift population
Faint millimeter NIKA2 dusty star-forming galaxies: finding the high-redshift population Open
We develop a new framework to constrain the source redshift. The method jointly accounts for the detection/non-detection of spectral lines and the prior information from the photometric redshift and total infrared luminosity from spectral …
View article: Faint mm NIKA2 dusty star-forming galaxies: Finding the high-redshift population
Faint mm NIKA2 dusty star-forming galaxies: Finding the high-redshift population Open
Aims. High-redshift dusty star-forming galaxies (DSFGs) are proposed to be the progenitors of massive quiescent galaxies arising at cosmic noon, providing a crucial insight into the formation, assembly, and early quenching of massive galax…
View article: Stellar and dust emission profiles of IMEGIN galaxies
Stellar and dust emission profiles of IMEGIN galaxies Open
We present a morphological analysis of a set of spiral galaxies from the NIKA2 Guaranteed Time Large Program, IMEGIN. We have fitted a single Sérsic model on a set of broadband images, from ultra-violet (UV) to millimeter (mm) wavelengths,…
View article: Exploring the interstellar medium of NGC 891 at millimeter wavelengths using the NIKA2 camera
Exploring the interstellar medium of NGC 891 at millimeter wavelengths using the NIKA2 camera Open
In the framework of the IMEGIN Large Program, we used the NIKA2 camera on the IRAM 30-m telescope to observe the edge-on galaxy NGC 891 at 1.15 mm and 2 mm and at a FWHM of 11.1” and 17.6”, respectively. Multiwavelength data enriched with …
View article: IAS/CEA Evolution of Dust in Nearby Galaxies (ICED): The spatially-resolved dust properties of NGC4254
IAS/CEA Evolution of Dust in Nearby Galaxies (ICED): The spatially-resolved dust properties of NGC4254 Open
We present the first preliminary results of the project ICED , focusing on the face-on galaxy NGC4254. We use the millimetre maps observed with NIKA2 at lRAM-30m. as part of the IMEGIN Guaranteed Time Large Program. and of a wide collectio…
View article: NIKA2 observations of dust grain evolution from star-forming filament to T-Tauri disk: Preliminary results from NIKA2 observations of the Taurus B211/B213 filament
NIKA2 observations of dust grain evolution from star-forming filament to T-Tauri disk: Preliminary results from NIKA2 observations of the Taurus B211/B213 filament Open
To understand the evolution of dust properties in molecular clouds in the course of the star formation process, we constrain the changes in the dust emissivity index from star-forming filaments to prestellar and protostellar cores to T Tau…
View article: NIKA2 observations of starless cores in Taurus and Perseus
NIKA2 observations of starless cores in Taurus and Perseus Open
Dusty starless cores play an important role in regulating the initial phases of the formation of stars and planets. In their interiors, dust grains coagulate and ice mantles form, thereby changing the millimeter emissivities and hence the …
View article: The NIKA2 Sunyaev-Zeldovich Large Program
The NIKA2 Sunyaev-Zeldovich Large Program Open
The NIKA2 camera operating at the IRAM 30-m telescope excels in high-angular resolution mapping of the thermal Sunyaev-Zel’dovich effect towards galaxy clusters at intermediate and high-redshift. As part of the NIKA2 guaranteed-time, the S…
View article: Constraining millimeter dust emission in nearby galaxies with NIKA2: The case of NGC2146 and NGC2976
Constraining millimeter dust emission in nearby galaxies with NIKA2: The case of NGC2146 and NGC2976 Open
This study presents the first millimeter continuum mapping observations of two nearby galaxies, the starburst spiral galaxy NGC2146 and the dwarf galaxy NGC2976, at 1.15 mm and 2 mm using the NIKA2 camera on the IRAM 30m telescope, as part…
View article: NIKA2 observations of 3 low-mass galaxy clusters at <i>z</i> ~ 1: Pressure profile and <i>Y</i><sub>SZ</sub> – <i>M</i> relation
NIKA2 observations of 3 low-mass galaxy clusters at <i>z</i> ~ 1: Pressure profile and <i>Y</i><sub>SZ</sub> – <i>M</i> relation Open
Three galaxy clusters selected from the XXL X-ray survey at high redshift and low mass ( z ~ 1 and M 500 ~ 1 – 2 × 10 14 M ⊙ ) were observed with NIKA2 to image their Sunyaev-Zel'dovich effect (SZ) signal. They all present an SZ morphology…
View article: NIKA2 observations of dust grain evolution from star-forming filament to T-Tauri disk: Preliminary results from NIKA2 observations of the Taurus B211/B213 filament
NIKA2 observations of dust grain evolution from star-forming filament to T-Tauri disk: Preliminary results from NIKA2 observations of the Taurus B211/B213 filament Open
To understand the evolution of dust properties in molecular clouds in the course of the star formation process, we constrain the changes in the dust emissivity index from star-forming filaments to prestellar and protostellar cores to T Tau…
View article: IAS/CEA Evolution of Dust in Nearby Galaxies (ICED): the spatially-resolved dust properties of NGC4254
IAS/CEA Evolution of Dust in Nearby Galaxies (ICED): the spatially-resolved dust properties of NGC4254 Open
We present the first preliminary results of the project \textit{ICED}, focusing on the face-on galaxy NGC4254. We use the millimetre maps observed with NIKA2 at IRAM-30m, as part of the IMEGIN Guaranteed Time Large Program, and of a wide c…
View article: NIKA2 observations of 3 low-mass galaxy clusters at $z \sim 1$: pressure profile and $Y_{\rm SZ}$-$M$ relation
NIKA2 observations of 3 low-mass galaxy clusters at $z \sim 1$: pressure profile and $Y_{\rm SZ}$-$M$ relation Open
Three galaxy clusters selected from the XXL X-ray survey at high redshift and low mass ($z\sim1$ and $M_{500} \sim 1-2 \times 10^{14}$ M$_{\odot}$) were observed with NIKA2 to image their Sunyaev-Zel'dovich effect (SZ) signal. They all pre…
View article: The XXL Survey LI. Pressure profile and $Y_{\rm SZ}$-$M$ scaling relation in three low-mass galaxy clusters at $z\sim1$ observed with NIKA2
The XXL Survey LI. Pressure profile and $Y_{\rm SZ}$-$M$ scaling relation in three low-mass galaxy clusters at $z\sim1$ observed with NIKA2 Open
The thermodynamical properties of the intracluster medium (ICM) are driven by scale-free gravitational collapse, but they also reflect the rich astrophysical processes at play in galaxy clusters. At low masses ($\sim 10^{14}$ M$_{\odot}$) …
View article: The NIKA2 Sunyaev-Zeldovich Large Program: Sample and upcoming product public release
The NIKA2 Sunyaev-Zeldovich Large Program: Sample and upcoming product public release Open
The NIKA2 camera operating at the IRAM 30 m telescope excels in high-angular resolution mapping of the thermal Sunyaev-Zeldovich effect towards galaxy clusters at intermediate and high-redshift. As part of the NIKA2 guaranteed time, the SZ…
View article: Constraining Millimeter Dust Emission in Nearby Galaxies with NIKA2: the case of NGC2146 and NGC2976
Constraining Millimeter Dust Emission in Nearby Galaxies with NIKA2: the case of NGC2146 and NGC2976 Open
This study presents the first millimeter continuum mapping observations of two nearby galaxies, the starburst spiral galaxy NGC2146 and the dwarf galaxy NGC2976, at 1.15 mm and 2 mm using the NIKA2 camera on the IRAM 30m telescope, as part…
View article: NIKA2 observations of starless cores in Taurus and Perseus
NIKA2 observations of starless cores in Taurus and Perseus Open
Dusty starless cores play an important role in regulating the initial phases of the formation of stars and planets. In their interiors, dust grains coagulate and ice mantles form, thereby changing the millimeter emissivities and hence the …