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SUMMARY:Disentangling AGN and stellar contributions to the Cosmic Spectral
  Energy Distribution using GAMA\, SWAGX\, EMU and eFEDS [Astrophysics Semi
 nar]
DTSTART:20260604T100000Z
DTEND:20260604T110000Z
DTSTAMP:20260602T184300Z
UID:indico-event-441@events.iiap.res.in
CONTACT:colloqm@iiap.res.in
DESCRIPTION:Speakers: Mr Kavin Kumar Nagarajan Rajkumar (ICRAR\, The Unive
 rsity of Western Australia\, 35 Stirling Highway\, Crawley\, WA 6009\, Aus
 tralia.)\n\nAbstract: A galaxy's total radiation arises from a combinatio
 n of processes including star formation\, dust and gas reprocessing\, accr
 etion\, and magnetic interactions. While star formation typically dominate
 s the optical and infrared emission of galaxies\, AGNs contribute signific
 antly at X-ray\, mid-infrared\, and radio wavelengths. Even a modest AGN c
 ontribution can bias key derived quantities such as stellar mass\, star fo
 rmation rate\, and dust properties. To improve the accuracy of these measu
 rements\, it is essential to move beyond simple galaxy/AGN classifications
  and systematically disentangle their respective contributions. As a step 
 toward this\, we extend the GAMA catalog by incorporating new radio data f
 rom the SWAG-X survey and X-ray data from eROSITA for 5\,258 sources withi
 n redshift z < 0.1 in the G09 region. We perform multiwavelength Spectral 
 Energy Distribution (SED) fitting from ultraviolet to radio using ProSpect
  to derive stellar masses and star formation rates for these sources. For 
 the first time\, we present a Cosmic Spectral Energy Distribution (CSED) s
 panning X-ray to radio wavelengths\, constructed by stacking the SEDs of i
 ndividual galaxies\, providing a more complete view of the integrated ener
 gy output of the nearby Universe.\n\nhttps://events.iiap.res.in/event/441/
LOCATION:Auditorium
URL:https://events.iiap.res.in/event/441/
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