Marco Gullieuszik

Publications : 122
Aldex : 60
H-index : 21
Citations : 1407

Variable Stars in the Globular Clusters and in the Field of the Fornax dSph Galaxy

Claudia Greco, N. De Lee et 12 al.

Jan 1, 2009
claudia.greco@bo.astro.it 2 INAFO.A.Padova, Vicolo dell’Osservatorio 5, 35122, Padova, Italy 3 INAFO.A.Brera, Via E. Bianchi 46, 23807 Merate, Italy 4 Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Avenida Vicuna Mackenna 4860, 782-0436 Macul, Santiago, Chile 5 Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI, USA 6 Department of...

The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation

Shoko Jin et 215 al.

Dec 7, 2022 in Arxiv
WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree field-of-view prime-focus corrector system, a nearly 1000-multiplex fibre positioner, 20 individually deployable 'mini' integral field units (IFUs), and a single large IFU. These fibre systems feed a dual-beam spectrogr...

Morphology driven evolution of barred galaxies in OMEGAWINGS Clusters

Amira A. Tawfeek et 9 al.

Oct 24, 2022 in Arxiv
We present a study of barred galaxies in the cluster environment, exploiting a sample of galaxies drawn from the extended WIde-field Nearby Galaxy-cluster Survey (OmegaWINGS) that covers up to the outer regions of 32 local X-ray selected clusters. Barred galaxies are identified through a semi-automatic analysis of ellipticity and position angle profiles. We find, in agreement with previous studies...

Walk on the Low Side: LOFAR explores the low-frequency radio emission of GASP jellyfish galaxies

Alessandro Ignesti et 16 al.

Aug 25, 2022 in Arxiv
Jellyfish galaxies, characterized by long filaments of stripped interstellar medium extending from their disks, are the prime laboratories to study the outcomes of ram pressure stripping. At radio wavelengths, they often show unilateral emission extending beyond the stellar disk, and an excess of radio luminosity with respect to that expected from their current star formation rate. We present new ...

Status of the PSF Reconstruction Work Package for MICADO ELT

Andrea Grazian et 23 al.

Sep 7, 2022 in Arxiv
MICADO is a workhorse instrument for the ESO ELT, allowing first light capability for diffraction limited imaging and long-slit spectroscopy at near-infrared wavelengths. The PSF Reconstruction (PSF-R) Team of MICADO is currently implementing, for the first time within all ESO telescopes, a software service devoted to the blind reconstruction of the PSF. This tool will work independently of the sc...

BRUTE, PSF Reconstruction for the SOUL pyramid-based Single Conjugate Adaptive Optics facility of the LBT

Carmelo Arcidiacono et 14 al.

Sep 7, 2022 in Arxiv
The astronomical applications greatly benefit from the knowledge of the instrument PSF. We describe the PSF Reconstruction algorithm developed for the LBT LUCI instrument assisted by the SOUL SCAO module. The reconstruction procedure considers only synchronous wavefront sensor telemetry data and a few asynchronous calibrations. We do not compute the Optical Transfer Function and corresponding filt...

GASP XXXIX: MeerKAT hunts Jellyfish in A2626

Tirna Deb, Myriam Gitti et 16 al.

Aug 27, 2022 in Arxiv
We present MeerKAT HI observations of six jellyfish candidate galaxies (JFCGs) in the galaxy cluster, A2626. Two of the six galaxies JW100 and JW103, that were identified as JFCGs from B-band images, are confirmed as jellyfish galaxies (JFGs). Both of the JFGs have low HI content, reside in the cluster core, and move at very high velocities ($\sim$ 3$\sigma_{cl}$). The other JFCGs, identified as n...

A New Method to Constrain the Appearance and Disappearance of Observed Jellyfish Galaxy Tails

Rory Smith, Jihye Shin et 13 al.

Jun 30, 2022 in Arxiv
We present a new approach to observationally constrain where the tails of Jellyfish (JF) galaxies in groups and clusters first appear and how long they remain visible with respect to the moment of their orbital pericenter. This is accomplished by measuring the distribution of their tail directions with respect to their host's center, and their distribution in a projected velocity-radius phase-diag...

Unveiling the interplay between the GASP jellyfish galaxy JO194 and its environment with Chandra

Chiara Bartolini, Neven Tomičić et 10 al.

Aug 2, 2022 in Arxiv
X-ray studies of jellyfish galaxies opened a window in the physics of the interplay between intracluster medium (ICM) and interstellar medium (ISM). In this paper, we present the study of an archival \textit{Chandra} observation of the GASP jellyfish galaxy JO194. We observe X-ray emission extending from the stellar disk to the unwinding spiral arms with an average temperature of $kT=0.79\pm0.03$ ...

Post-starburst galaxies in the centers of intermediate redshift clusters

Ariel Werle et 20 al.

Mar 16, 2022 in Arxiv
We present results from MUSE spatially-resolved spectroscopy of 21 post-starburst galaxies in the centers of 8 clusters from $z\sim0.3$ to $z\sim0.4$. We measure spatially resolved star-formation histories (SFHs), the time since quenching ($t_Q$) and the fraction of stellar mass assembled in the past 1.5 Gyr ($\mu_{1.5}$). The SFHs display a clear enhancement of star-formation prior to quenching f...

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