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LESS THAN 10 PERCENT OF STAR FORMATION IN z similar to 0.6 MASSIVE GALAXIES IS TRIGGERED BY MAJOR INTERACTIONS
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Abstract
- Both observations and simulations show that major tidal interactions or mergers between gas-rich galaxies can lead to intense bursts of star formation. Yet, the average enhancement in star formation rate (SFR) in major mergers and the contribution of such events to the cosmic SFR are not well estimated. Here we use photometric redshifts, stellar masses, and UV SFRs from COMBO-17, 24 μm SFRs from Spitzer, and morphologies from two deep Hubble Space Telescope (HST) cosmological survey fields (ECDFS/GEMS and A901/STAGES) to study the enhancement in SFR as a function of projected galaxy separation. We apply two-point projected correlation function techniques, which we augment with morphologically selected very close pairs (separation
- Subjects :
- Spectral Energy-Distributions
Stellar Mass
Formation History
galaxies: starburst
Active Galactic Nuclei
Hubble-Space-Telescope
Astrophysics::Cosmology and Extragalactic Astrophysics
galaxies: general
infrared: galaxies
High-Redshift Galaxies
Forming Galaxies
galaxies: interactions
Astrophysics::Solar and Stellar Astrophysics
Astrophysics::Earth and Planetary Astrophysics
Ultraluminous Infrared Galaxies
Deep Field-South
X-Ray-Emission
galaxies: evolution
Astrophysics::Galaxy Astrophysics
galaxies: statistics
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.dedup.wf.001..e9a3a9496bf6ff1a69bd6f40171a2f3d