6 papers · 1 filter
The Mid-Infrared Narrow Line Baldwin Effect Revealed by Spitzer
M. Keremedjiev, L. Hao, V. Charmandaris
We present our discovery of a narrow-line Baldwin effect, an anti-correlation between the equivalent width (EW) of a line and the flux of the associated continuum, in 5-20m mid-…
High resolution mid-infrared spectroscopy of ultraluminous infrared galaxies
D. Farrah, J. Bernard-Salas, H. W. W. Spoon +8
(Abridged) We present R~600, 10-37um spectra of 53 ULIRGs at z<0.32, taken using the IRS on board Spitzer. All of the spectra show fine structure emission lines of Ne, O, S, Si and…
The Spitzer Spirals, Bridges, and Tails Interacting Galaxy Survey: Interaction-Induced Star Formation in the Mid-Infrared
Beverly J. Smith, C. Struck, M. Hancock +3
We present Spitzer mid-infrared imaging of a sample of 35 tidally-distorted pre-merger interacting galaxy pairs selected from the Arp Atlas. We compare their global mid-infrared pr…
Large-scale Star Formation Triggering in the Low-mass Arp 82 System: A Nearby Example of Galaxy Downsizing Based on UV/Optical/Mid-IR Imaging
Mark Hancock, Beverly J. Smith, Curtis Struck +4
As part of our Spitzer Spirals, Bridges, and Tails project to help understand the effects of galaxy interactions on star formation, we analyze GALEX ultraviolet, SARA optical, and…
Intergalactic Star Formation
Pierre-Alain Duc, Meederic Boquien, Jonathan Braine +3
Star formation in interacting systems may take place in various locations, from the dust--enshrouded core of Ultraluminous Infrared Galaxies to more unusual places such as the debr…
Spitzer/IRS Observations of the Redshift 3.91 quasar APM 08279+5255
B. T. Soifer, V. Charmandaris, B. R. Brandl +14
The Infrared Spectrograph (IRS) onboard the Spitzer Space Telescope (SST) has been used to obtain low and moderate resolution spectra of the dust and gas-rich quasar APM08279+5255…