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SUMMARY:Looking into the faintest with MUSE: Integral-field spectroscopy o
 f ultradiffuse galaxies in a cluster environment - Enrica Iodice
DTSTART:20251009T150000Z
DTEND:20251009T160000Z
UID:TALK236737@talks.cam.ac.uk
CONTACT:Jan Scholtz
DESCRIPTION:In this talk I would like to present the LEWIS project. Lookin
 g into the\nfaintEst WIth MUSE (LEWIS) is an ESO large program\, granted w
 ith 133.5hrs with\nMUSE@ESO-VLT.\, is the first homogeneous integral-field
  spectroscopic survey of\n30 extremely low-surface-brightness (LSB) galaxi
 es in the Hydra I cluster of galaxies\,\nwhere the majority of LSB galaxie
 s in the sample (22 in total) are ultra-diffuse\ngalaxies (UDGs). Because 
 of their LSB nature\, getting spectroscopic data for UDGs is\na challengin
 g task. To date\, as opposed to the availability of deep images\, we still
  lack\na statistically significant sample of UDGs with spectroscopy\, whic
 h strongly limits our\nconstraints and conclusions on their stellar popula
 tions and DM content. Doubling\nthe number of spectroscopically studied UD
 Gs\, with the LEWIS project we will make\na decisive impact in this field.
  With LEWIS we will map\, for the first time\, i) the 2D\nstellar kinemati
 cs\, ii) the stellar population and iii) established the GC population and
 \ntheir specific frequency of a complete sample of UDGs in a galaxy cluste
 r with IF\nspectroscopic data. The structural properties together with the
  baryonic versus DM\nfraction are used in comparison with hydrodynamical m
 odels of UDGs to establish\ntheir formation channels as a function of thei
 r location in the cluster.\nWith LEWIS we are probing the MUSE capabilitie
 s to map the galaxy structure\ndown to the faintest surface brightness lev
 els.
LOCATION:Hoyle Lecture Theatre\, Institute of Astronomy
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