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Phil Cigan (New Mexico Tech)23/10/2013, 09:00PosterMany FIR studies target systems that have typical or enhanced abundances of heavy elements, but what is the picture for the low-metallicity regime? We present a comparison of HI and [CII] observations for five extremely metal-poor dwarf galaxies from the LITTLE THINGS survey. The galaxies we discuss have 12+log(O/H) = 7.4 - 7.8, some of the lowest-metallicity galaxies observed in [CII]. Our...Go to contribution page
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Guangxing Li (MPIfR)23/10/2013, 09:00PosterGuang-Xing Li, Friedrich Wyrowski, Karl Menten and Arnaud Belloche Max-Planck Institut fuer Radioastronomie, Bonn, Germany Star formation occurs in molecular gas. In the previous studies, the structure of the molecular gas has been studied in terms of molecular clouds, but overlooked beyond the cloud scale. In this work, we present an observational study of the molecular gas at l~ 50....Go to contribution page
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Anahi Caldu Primo (MPIA)23/10/2013, 09:00PosterWe present evidence for the presence of a high-dispersion molecular gas component in nearby galaxies as traced through the CO(2-1) emission. The measured dispersion is higher than predicted if it was just due to the cold dense molecular gas phase in a galaxy's disk. Our analysis is based on a comprehensive study of the velocity dispersions of the atomic and molecular gas components in the...Go to contribution page
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Mykola Petrov (University of Vienna)23/10/2013, 09:00PosterThe galactic evolution is dominated by gas dynamics which can include gas infall and outflows, galactic fountains, and more and can be understandable due to differences in dynamics, thermal energies and element abundances of the gas phases. To follow the chemical and temporal evolution of galaxies it is necessary to model the gasdynamics combined with stellar dynamics, the star-gas energy and...Go to contribution page
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Kathryn Kreckel (MPIA)23/10/2013, 09:00PosterGalactic winds are important for regulating feedback within galaxies and contribute to shaping the multi-phase ISM. We employ optical IFU observations and Herschel PACS spectroscopy to examine the kinematics and energetics of the outflow within NGC 2146. Hosting a starburst driven wind similar to M82, this late-phase merger and LIRG exhibits evidence for outflows in the dust as well as the...Go to contribution page
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Deidre Hunter (Lowell Observatory)23/10/2013, 09:00PosterMetallicity is not a passive result of galaxy evolution, but a crucial driver. Dwarf galaxies are low in heavy elements, which has consequences for the ability to form cold, dense clouds that form stars. Molecular cores shrink and atomic envelopes grow in star-forming clouds as the metallicity drops (Bolatto et al. 2011). For this reason, CO had not been detected at log(O/H)+12 < 8.0 (Schruba...Go to contribution page
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Fatemeh Tabatabaei23/10/2013, 09:00PosterBars are generally considered as an important transform mechanism of molecular gas toward the central regions of galaxies. Numerical simulations suggest that barred galaxies tend to have more of their gas mass concentrated in their centers. On the other hand, it is possible that the central mass concentration is affected by more than just the presence of bars. We mapped the giant barred...Go to contribution page
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