Early results from GLASS-JWST. XX: Unveiling a population of "red-excess'' galaxies in Abell2744 and in the coeval field

Abstract

We combine JWST/NIRCam imaging and MUSE data to characterize the properties of galaxies in different environmental conditions in the cluster Abell2744 ($z=0.3064$) and in its immediate surroundings. We investigate how galaxy colors, morphology and star forming fractions depend on wavelength and on different parameterizations of environment. Our most striking result is the discovery of a ``red-excess'' population in F200W$-$F444W colors both in the cluster regions and the field. These galaxies have normal F115W$-$F150W colors, but are up to 0.8 mag redder than red sequence galaxies in F200W$-$F444W. They also have rather blue rest frame B$-$V colors. {Galaxies in the field and at the cluster virial radius are overall characterized by redder colors, but galaxies with the largest color deviations are found in the field and in the cluster core. Several results} suggest that mechanisms taking place in these regions might be more effective in producing these colors. Looking at their morphology, many cluster galaxies show signatures consistent with ram pressure stripping, while field galaxies have features resembling interactions and mergers. Our hypothesis is that these galaxies are characterized by dust enshrouded star formation: a JWST/NIRSpec spectrum for one of the galaxies is dominated by a strong PAH at 3.3$\mu m$, suggestive of dust obscured star formation. Larger spectroscopic samples are needed to understand if the color excess is due exclusively to dust-obscured star formation, and the role of environment in triggering it.

ApJL in press

References in corpus (36)

• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• Detection of quiescent galaxies in a bicolor sequence from z=0-2
• The Evolution of Galaxy Structure over Cosmic Time
• Mid-IR Galaxy Classification Based on Silicate Obscuration and PAH Equivalent Width
• The MUSE Hubble Ultra Deep Field Survey: I. Survey description, data reduction and source detection
• The GLASS James Webb Space Telescope Early Release Science Program. I. Survey Design and Release Plans
• The FourStar Galaxy Evolution Survey (ZFOURGE): ultraviolet to far-infrared catalogs, medium-bandwidth photometric redshifts with improved accuracy, stellar masses, and confirmation of quiescent galaxies to z~3.5
• Spitzer Quasar and ULIRG evolution study (QUEST): I. The origin of the far infrared continuum of QSOs
• Spitzer Mid-Infrared Spectroscopy of Infrared Luminous Galaxies at z~2 I: the Spectra
• Spitzer Mid-to-Far-Infrared Flux Densities of Distant Galaxies
• An Atlas of MUSE Observations towards Twelve Massive Lensing Clusters
• The Dependence of the Mass Assembly History of Cold Dark Matter Halos on Environment
• A spectrophotometric model applied to cluster galaxies: the WINGS dataset
• Constraints on the star-formation rate of z~3 LBGs with measured metallicity in the CANDELS GOODS-South field
• Internal dynamics of the radio-halo cluster A2744
• Physical properties of SDSS satellite galaxies in projected phase-space
• Early results from GLASS-JWST. XI: Stellar masses and mass-to-light ratio of z>7 galaxies
• GASP XXI. Star formation rates in the tails of galaxies undergoing ram-pressure stripping
• New high-precision strong lensing modeling of Abell 2744. Preparing for JWST observations
• Morphological Fractions of Galaxies in WINGS Clusters: revisiting the Morphology-Density Paradigm
• Early Results From GLASS-JWST. XII: The Morphology of Galaxies at the Epoch of Reionization
• GASP XXIX -- Unwinding the arms of spiral galaxies via ram-pressure stripping
• Early results from GLASS-JWST. II: NIRCam extra-galactic imaging and photometric catalog
• The GOGREEN survey: Post-infall environmental quenching fails to predict the observed age difference between quiescent field and cluster galaxies at z>1
• Star formation in the massive cluster merger Abell 2744
• The ASTRODEEP-GS43 catalogue: new photometry and redshifts for the CANDELS GOODS-South field
• The relevance of ram pressure stripping for the evolution of blue cluster galaxies as seen at optical wavelengths
• The Grism Lens-Amplified Survey from Space (GLASS). IX. The dual origin of low-mass cluster galaxies as revealed by new structural analyses
• Merger induced clump formation in distant infrared luminous starburst galaxies
• Observing ram pressure at work in intermediate redshift clusters with MUSE: the case of Abell 2744and Abell 370
• The 3.3 micron PAH Emission as a Star Formation Rate Indicator
• The time delay between star formation quenching and morphological transformation of galaxies in clusters: a phase-space view of EDisCS
• The Grism lens-amplified survey from space (GLASS). VIII. The influence of the cluster properties on Halpha emitter galaxies at 0.3<z<0.7
• IRAC Excess in Distant Star-Forming Galaxies: Tentative Evidence for the 3.3$\mu$m Polycyclic Aromatic Hydrocarbon Feature ?
• A Redshift Survey of the Nearby Galaxy Cluster Abell 2199: Comparison of the Spatial and Kinematic Distributions of Galaxies with the Intracluster Medium
• Locations and Morphologies of Jellyfish Galaxies in A2744 and A370

Cited by in corpus (7)

• The GLASS-JWST Early Release Science Program. III. Strong lensing model of Abell 2744 and its infalling regions
• The GLASS-JWST Early Release Science Program. IV. Data release of 263 spectra from 245 unique sources
• The rate and contribution of mergers to mass assembly from NIRCam observations of galaxy candidates up to 13.3 billion years ago
• Little impact of mergers and galaxy morphology on the production and escape of ionizing photons in the early Universe
• Unveiling Multiple Physical Processes on a Cluster Galaxy at z=0.3 Using JWST
• Mechanisms Affecting Galaxies Nearby and Environmental Trends (MAGNET)
• Not just PAH${}_{3.3}$: why galaxies turn red in the Near-Infrared