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Future Fellowships - Grant ID: FT140101202

Title
Future Fellowships - Grant ID: FT140101202
Funding
ARC | Future Fellowships
Contract (GA) number
FT140101202
Start Date
2014/01/01
End Date
2018/12/31
Open Access mandate
no
Organizations
-
More information
http://purl.org/au-research/grants/arc/FT140101202

 

  • The Origins of [CII] Emission in Local Star-forming Galaxies

    Croxall, Kevin; Smith, J. D. T.; Pellegrini, Eric; Groves, Brent; Bolatto, Alberto; Herrera-Camus, Rodrigo; Sandstrom, Karin; Draine, Bruce T.; Wolfire, Mark; Armus, Lee; Boquien, Mederic; Brandl, Bernhard; Dale, Daniel A.; Galametz, Maud; Hunt, Leslie K.;... (2017)
    Projects: ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202)
    The [CII] 158um fine-structure line is the brightest emission line observed in local star-forming galaxies. As a major coolant of the gas-phase interstellar medium, [CII] balances the heating, including that due to far-ultraviolet photons, which heat the gas via the photoelectric effect. However, the origin of [CII] emission remains unclear, because C+ can be found in multiple phases of the interstellar medium. Here we measure the fractions of [CII] emission originating in the ionized and neu...

    A revised planetary nebula luminosity function distance to NGC 628 using MUSE

    Kreckel, K.; Groves, B.; Bigiel, F.; Blanc, G.; Kruijssen, J. M. D.; Hughes, A.; Schruba, A.; Schinnerer, E. (2016)
    Projects: ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202)
    Distance uncertainties plague our understanding of the physical scales relevant to the physics of star formation in extragalactic studies. The planetary nebulae luminosity function (PNLF) is one of very few techniques that can provide distance estimates to within ~10%, however it requires a planetary nebula (PN) sample that is uncontaminated by other ionizing sources. We employ optical IFU spectroscopy using MUSE on the VLT to measure [OIII] line fluxes for sources unresolved on 50 pc scales ...

    Attenuation modified by DIG and dust as seen in M31

    Tomicic, Neven; Kreckel, Kathryn; Groves, Brent; Schinnerer, Eva; Sandstrom, Karin; Kapala, Maria; Blanc, Guillermo A.; Leroy, Adam (2017)
    Projects: ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202)
    The spatial distribution of dust in galaxies affects the global attenuation, and hence inferred properties, of galaxies. We trace the spatial distribution of dust in five fields (at 0.6-0.9 kpc scale) of M31 by comparing optical attenuation with the total dust mass distribution. We measure the attenuation from the Balmer decrement using Integral Field Spectroscopy and the dust mass from Herschel far-IR observations. Our results show that M31's dust attenuation closely follows a foreground scr...

    The Origins of [C II] Emission in Local Star-forming Galaxies

    Croxall, K. V.; Smith, J. D.; Pellegrini, E.; Groves, B.; Bolatto, A.; Herrera-Camus, R.; Sandstrom, K. M.; Draine, B.; Wolfire, M. G.; Armus, L.; Boquien, M.; Brandl, B.; Dale, D.; Galametz, M.; Hunt, L.;... (2017)
    Projects: ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202)
    The [C ii] 158 μm fine-structure line is the brightest emission line observed in local star-forming galaxies. As a major coolant of the gas-phase interstellar medium, [C ii] balances the heating, including that due to far-ultraviolet photons, which heat the gas via the photoelectric effect. However, the origin of [C ii] emission remains unclear because C+ can be found in multiple phases of the interstellar medium. Here we measure the fractions of [C ii] emission originating in the ionized and...

    The Origin of [CII] 157 μm Emission in a Five-component Interstellar Medium: The Case of NGC 3184 and NGC 628

    Abdullah, A.; Brandl, B.R.; Groves, Brent; Wolfire, Mark; Calzetti, D.; Croxall, Kevin; Looze, Ilse De; Kennicutt, R. C.; Sandstrom, K. M.; Armus, Lee; Dale, Daniel A.; Galametz, Maud; Herrera-Camus, Rodrigo; Hunt, L. K.; Smith, J. D T;... (2017)
    Projects: ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202)
    With its relatively low ionization potential, C+ can be found throughout the interstellar medium (ISM) and provides one of the main cooling channels of the ISM via the [C ii] 157 μm emission. While the strength of the [C ii] line correlates with the star formation rate, the contributions of the various gas phases to the [C ii] emission on galactic scales are not well established. In this study we establish an empirical multi-component model of the ISM, including dense H ii regions, dense phot...

    The Discovery of Raman Scattering in HII Regions

    Dopita, Michael A.; Nicholls, David C.; Sutherland, Ralph S.; Kewley, Lisa J.; Groves, Brent A. (2016)
    Projects: ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202), ARC | Discovery Projects - Grant ID: DP130103925 (DP130103925)
    We report here on the discovery of faint extended wings of H\alpha\ observed out to an apparent velocity of ~ 7600 km/s in the Orion Nebula (M42) and in five HII regions in the Large and the Small Magellanic Clouds. We show that, these wings are caused by Raman scattering of both the O I and Si II resonance lines and stellar continuum UV photons with H I followed by radiative decay to the H I n=2 level. The broad wings also seen in H\beta\ and in H\gamma\ result from Raman scattering of the U...

    Gas fraction and depletion time of massive star forming galaxies at z~3.2: no change in global star formation process out to z>3

    Sargent, M T; Schinnerer, E; Groves, B; Karim, A; Oesch, P A; Magnelli, B; LeFevre, O; Tasca, L; Civano, F; Cassata, P; Smolčić, V (2016)
    Projects: ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202), EC | COSMASS (337595)
    The observed evolution of the gas fraction and its associated depletion time in main sequence (MS) galaxies provides insights on how star formation proceeds over cosmic time. We report ALMA detections of the rest-frame $\sim$300$\mu$m continuum observed at 240 GHz for 45 massive ($\rm \langle log(M_{\star}(M_{\odot}))\rangle=10.7$), normal star forming ($\rm \langle log(sSFR(yr^{-1}))\rangle=-8.6$), i.e. MS, galaxies at $\rm z\approx3.2$ in the COSMOS field. From an empirical calibration betw...

    The COSMOS [OII] Survey: Evolution of Electron Density with Star Formation Rate

    Kaasinen, Melanie; Bian, Fuyan; Groves, Brent; Kewley, Lisa; Gupta, Anshu (2016)
    Projects: ARC | Australian Laureate Fellowships - Grant ID: FL150100113 (FL150100113), ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202)
    Star-forming galaxies at $z > 1$ exhibit significantly different properties to local galaxies of equivalent stellar mass. Not only are high-redshift star-forming galaxies characterized by higher star formation rates and gas fractions than their local counterparts, they also appear to host star-forming regions with significantly different physical conditions, including greater electron densities. To understand what physical mechanisms are responsible for the observed evolution of star-forming ...

    A physically-based model of the ionizing radiation from active galaxies for photoionization modeling

    Thomas, Adam D.; Groves, Brent A.; Sutherland, Ralph S.; Dopita, Michael A.; Jin, Chichuan; Kewley, Lisa J. (2016)
    Projects: ARC | Discovery Projects - Grant ID: DP160103631 (DP160103631), ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202)
    We present a simplified model of Active Galactic Nucleus (AGN) continuum emission designed for photoionization modeling. The new model {\sc oxaf} reproduces the diversity of spectral shapes that arise in physically-based models. We identify and explain degeneracies in the effects of AGN parameters on model spectral shapes, with a focus on the complete degeneracy between the black hole mass and AGN luminosity. Our re-parametrized model {\sc oxaf} removes these degeneracies and accepts three pa...

    Dissecting Galaxies: Separating Star Formation, Shock Excitation and AGN Activity in the Central Region of NGC 613

    Davies, Rebecca L.; Groves, Brent; Kewley, Lisa J.; Shastri, Prajval; Maithil, Jaya; Kharb, Preeti; Banfield, Julie; Longbottom, Fergus; Dopita, Michael A.; Hampton, Elise J.; Scharwächter, Julia; Sutherland, Ralph; Jin, Chichuan; Zaw, Ingyin; James, Bethan;... (2017)
    Projects: ARC | Future Fellowships - Grant ID: FT140101202 (FT140101202), ARC | Discovery Projects - Grant ID: DP130103925 (DP130103925)
    The most rapidly evolving regions of galaxies often display complex optical spectra with emission lines excited by massive stars, shocks and accretion onto supermassive black holes. Standard calibrations (such as for the star formation rate) cannot be applied to such mixed spectra. In this paper we isolate the contributions of star formation, shock excitation and active galactic nucleus (AGN) activity to the emission line luminosities of individual spatially resolved regions across the centra...
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