New IRAM 30 m HERA CO(2−1) data of NGC 4654 are used to study the physical conditions of the ISM and its ability to form stars in the region where gas compression occurs. NGC 4654 shows a strongly compressed gas region near the outer edge of the optical disk, with H I surface densities (high H I surface density region) significantly exceeding the canonical value of 10−15 M⊙ pc−2. NGC 4654 is a Virgo cluster galaxy seen almost face-on, which undergoes nearly edge-on gas ram pressure stripping and a fly-by gravitational interaction with another massive galaxy, NGC 4639. 833824).Abstract : Due to an environment that promotes gravitational interactions and ram pressure stripping, galaxies within clusters are particularly likely to present unusual interstellar medium (ISM) properties. This project has received funding from the European Reseach Council (ERC) under the Horizon 2020 research and innovation programme (grant agreement N. (2017).Įxamples of jellyfish galaxies (credit: ESO/GASP collaboration) (2016), the survey strategy, and science drivers, are described in the GASP survey paper Poggianti et al. The GASP sample is selected from the sample of stripping candidates by Poggianti et al. APEX CO2-1, VLA, ALMA CO2-1 and ALMA CO1-0, Astrosat, Meerkat, HST) allow to characterize all the phases of the gas and stellar populations. Existing auxiliary data and planned campaigns (e.g. The aim of this program is to clarify how, where and why the gas removal occurs, measure its timescale and efficiency as a function of galaxy mass and environment, and quantify the amount of star formation involved in this process.
GASP targets are galaxies over a wide range of galaxy masses, degrees of morphological asymmetry and environments. Observations were concluded in April 2018. This program started in October 2015 and has been allocated 120 hours of MUSE over four semesters. GASP (GAs Stripping Phenomena in galaxies with MUSE) is an ESO Large Program carried out with the MUSE Integral Field spectrograph on the VLT to observe 100 stripping candidates at z=0.04-0.07 located in different environments (from the field to clusters). Showing signs of stripping at optical wavelengths and indenitfies a (2022) that characterizes the fraction of galaxies The evolution of blue cluster galaxies? January, 11th, 2022Īl.
#Stellar ram pressure driver#
Mass assembled in the past 1.5 Gyr for a sample of 21 galaxiesĪt z~0.4, pointing to ram-pressure stripping as the main driver ofĬurious to know what is the relevance of ram pressure stripping for The time since quenching and the fraction of stellar (2022) measures spatially resolved star-formation histories, What are the properties of post starburst galaxies at intermediate redshifts? March, 17th, 2022Īl. Investigate magnetic fields in jellyfish galaxies (PI. We obtained more than 300 hours at VLA to further (2022) present the study of an archival Chandra observation of the GASP jellyfish galaxy JO194. Latest News Unveling the interplay between intracluster medium (ICM)Īnd interstellar medium (ISM) in jellyfish galaxies in X-ray August, 2nd, 2022Īl.
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