Zaragoza-Cardiel, J.; Smith, Beverly J.; Rosado, Margarita; Beckman, J. E.; Bitsakis, Theodoros; Camps-Fariña, A.; Font, J.; Cox, Isaiah S.
Bibliographical reference
The Astrophysical Journal Supplement Series, Volume 234, Issue 2, article id. 35, 16 pp. (2018).
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2
2018
Citations
13
Refereed citations
12
Description
We have identified 1027 star-forming complexes in a sample of 46
galaxies from the Spirals, Bridges, and Tails (SB&T) sample of
interacting galaxies, and 693 star-forming complexes in a sample of 38
non-interacting spiral (NIS) galaxies in 8 μm observations from the
Spitzer Infrared Array Camera. We have used archival multi-wavelength
UV-to IR observations to fit the observed spectral energy distribution
of our clumps with the Code Investigating GALaxy Emission using a double
exponentially declined star formation history. We derive the star
formation rates (SFRs), stellar masses, ages and fractions of the most
recent burst, dust attenuation, and fractional emission due to an active
galactic nucleus for these clumps. The resolved star formation main
sequence holds on 2.5 kpc scales, although it does not hold on 1 kpc
scales. We analyzed the relation between SFR, stellar mass, and age of
the recent burst in the SB&T and NIS samples, and we found that the
SFR per stellar mass is higher in the SB&T galaxies, and the clumps
are younger in the galaxy pairs. We analyzed the SFR radial profile and
found that the SFR is enhanced through the disk and in the tidal
features relative to normal spirals.
Related projects
Kinematic, Structural and Composition Studies of the Interstellar and Intergalactic Media
The basic objective of the broject is to investigate the evolution of galaxies by deepening our understanding of the interaction between the insterstellar medium and the stars.The main technique which we use is the two-dimensional kinematic study of whole galaxies observed using our instrument:GHaFaS, a Fabry-Perot interferometer on the William
Prof.
John E. Beckman