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SUMMARY:Stellar Masses of Star Forming Galaxies in Galaxy Cluster
DTSTART;VALUE=DATE-TIME:20110714T150000Z
DTEND;VALUE=DATE-TIME:20110714T170000Z
DTSTAMP;VALUE=DATE-TIME:20260715T034554Z
UID:indico-contribution-5030@events.saip.org.za
DESCRIPTION:Speakers: Solohery Randriamampandry (SAAO/UWC)\nWe determine t
 he stellar mass of star forming galaxies in the X-ray luminous cluster MS 
 0451.6-0305 at z ∼ 0.54. The stellar masses are estimated from fitting m
 odel spectral energy distributions (SEDs) to deep\, optical UBRIz observat
 ions obtained from WIYN 3.5m telescope and public NIR K-band image from Pa
 lomar Observatory telescope. The model SEDs are based on the stellar popul
 ation synthesis (SPS) model of Bruzual & Charlot (2003) and Conroy et al. 
 (2009) that span a wide range of age\, star formation history\, initial ma
 ss function\, metallicity and dust content. We measure stellar masses for 
 galaxies down to M* ∼ 2x108Mʘ. We find a tight correlation between stel
 lar masses derived from the two SPSs. We compare the derived stellar masse
 s to the dynamical masses for a set of 25 star-forming galaxies. The dynam
 ical masses are derived from high resolution\, spectroscopic observations 
 of emission lines from the DEIMOS spectrograph on the Keck telescope. A st
 rong correlation is seen between the dynamical and stellar mass for the ga
 laxies\; and the star forming galaxies show fairly constant ratio between 
 stellar and dynamical mass. When comparing to the field sample of Guzmán 
 et al. (2003) of luminous compact blue galaxies\, we see an excess of low 
 mass galaxies in the cluster.\n\nhttps://events.saip.org.za/event/7/contri
 butions/5030/
LOCATION: Asteria
URL:https://events.saip.org.za/event/7/contributions/5030/
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