sfr in high redshift clusters with spitzer
DESCRIPTION
TRANSCRIPT
SFR in High Redshift Clusters with Spitzer
By
Vinay Patel
The Formation of Stars
Interstellar Medium Clumps of Gas and Dust Gravity’s Effect Protostar Hydrogen Fusion Solar Wind
What Is SFR?
SFR = Star Formation Rate Solar Masses Per Year Variable Usage Varies Depending on Position
Measurement of SFR
Total Infrared Luminosity (LTIR)
Spectral Energy Distributions (SEDs) 5 Models Different ‘c’ Values
Two Equations: LTIR(galaxy) = c x L15(galaxy)
SFR(Mо yr-1) = 4.5 x 10-44 x LTIR(erg s-1)
Spitzer’s Use
Uses Infrared Technology Infrared is Heat Radiation Wavelength Longer than
Visible Light Interstellar Medium
Dust and Gas Invisible Regions Become
Visible
Cluster 1037-1243
Average SFR Per Cluster Member: 60.47 Mо/yr
Total SFR for Cluster: 1693 Mо/yr
The Future
CL1037 Is One of Three Clusters More Data to Come Gain Insights to Galaxy
Evolution