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Start Over Author "Bourne, N." Publisher oxford university press (oup)
115 results on '"Bourne, N."'

1. Erratum: The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations

Author

Bakx, Tom J L C, primary, Eales, S A, primary, Negrello, M, primary, Smith, M W L, primary, Valiante, E, primary, Holland, W S, primary, Baes, M, primary, Bourne, N, primary, Clements, D L, primary, Dannerbauer, H, primary, De Zotti, G, primary, Dunne, L, primary, Dye, S, primary, Furlanetto, C, primary, Ivison, R J, primary, Maddox, S, primary, Marchetti, L, primary, Michałowski, M J, primary, Omont, A, primary, Oteo, I, primary, Wardlow, J L, primary, van der Werf, P, primary, and Yang, C, primary

Published
2020
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2. ALMA observations of massive molecular gas reservoirs in dusty early-type galaxies

Author

Sansom, Anne E, Glass, David Henry William, Bendo, G J, Davis, T A, Rowlands, K, Bourne, N, Dunne, L, Eales, S, Kaviraj, S, Popescu, Cristina, Smith, M, Viaene, S, Sansom, Anne E, Glass, David Henry William, Bendo, G J, Davis, T A, Rowlands, K, Bourne, N, Dunne, L, Eales, S, Kaviraj, S, Popescu, Cristina, Smith, M, and Viaene, S

Abstract

Unresolved gas and dust observations show a surprising diversity in the amount of interstellar matter in early-type galaxies. Using ALMA observations we resolve the ISM in z∼0.05 early-type galaxies. From a large sample of early-type galaxies detected in the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) we selected five of the dustiest cases, with dust masses Md ∼several× 107M⊙, with the aim of mapping their submillimetre continuum and 12CO(2-1) line emission distributions. These observations reveal molecular gas disks. There is a lack of associated, extended continuum emission in these ALMA observations, most likely because it is resolved out or surface brightness limited, if the dust distribution is as extended as the CO gas. However, two galaxies have central continuum ALMA detections. An additional, slightly offset, continuum source is revealed in one case, which may have contributed to confusion in the Herschel fluxes. Serendipitous continuum detections further away in the ALMA field are found in another case. Large and massive rotating molecular gas disks are mapped in three of our targets, reaching a few× 109M⊙. One of these shows evidence of kinematic deviations from a pure rotating disc. The fields of our two remaining targets contain only smaller, weak CO sources, slightly offset from the optical galaxy centres. These may be companion galaxies seen in ALMA observations, or background objects. These heterogeneous findings in a small sample of dusty early-type galaxies reveal the need for more such high spatial resolution studies, to understand statistically how dust and gas are related in early-type galaxies.

Published
2019

6. A direct calibration of the IRX–β relation in Lyman-break Galaxies at z = 3–5

Author

Koprowski, M P, primary, Coppin, K E K, additional, Geach, J E, additional, McLure, R J, additional, Almaini, O, additional, Blain, A W, additional, Bremer, M, additional, Bourne, N, additional, Chapman, S C, additional, Conselice, C J, additional, Dunlop, J S, additional, Farrah, D, additional, Hartley, W, additional, Karim, A, additional, Knudsen, K K, additional, Michałowski, M J, additional, Scott, D, additional, Simpson, C, additional, Smith, D J B, additional, and van der Werf, P P, additional

Published
2018
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7. GAMA/H-ATLAS: the local dust mass function and cosmic density as a function of galaxy type – a benchmark for models of galaxy evolution

Author

Beeston, R A, primary, Wright, A H, primary, Maddox, S, primary, Gomez, H L, primary, Dunne, L, primary, Driver, S P, primary, Robotham, A, primary, Clark, C J R, primary, Vinsen, K, primary, Takeuchi, T T, primary, Popping, G, primary, Bourne, N, primary, Bremer, M N, primary, Phillipps, S, primary, Moffett, A J, primary, Baes, M, primary, Bland-Hawthorn, J, primary, Brough, S, primary, De Vis, P, primary, Eales, S A, primary, Holwerda, B W, primary, Loveday, J, primary, Liske, J, primary, Smith, M W L, primary, Smith, D J B, primary, Valiante, E, primary, Vlahakis, C, primary, and Wang, L, primary

Published
2018
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8. The VANDELS ESO public spectroscopic survey

Author

McLure, R J, primary, Pentericci, L, additional, Cimatti, A, additional, Dunlop, J S, additional, Elbaz, D, additional, Fontana, A, additional, Nandra, K, additional, Amorin, R, additional, Bolzonella, M, additional, Bongiorno, A, additional, Carnall, A C, additional, Castellano, M, additional, Cirasuolo, M, additional, Cucciati, O, additional, Cullen, F, additional, De Barros, S, additional, Finkelstein, S L, additional, Fontanot, F, additional, Franzetti, P, additional, Fumana, M, additional, Gargiulo, A, additional, Garilli, B, additional, Guaita, L, additional, Hartley, W G, additional, Iovino, A, additional, Jarvis, M J, additional, Juneau, S, additional, Karman, W, additional, Maccagni, D, additional, Marchi, F, additional, Mármol-Queraltó, E, additional, Pompei, E, additional, Pozzetti, L, additional, Scodeggio, M, additional, Sommariva, V, additional, Talia, M, additional, Almaini, O, additional, Balestra, I, additional, Bardelli, S, additional, Bell, E F, additional, Bourne, N, additional, Bowler, R A A, additional, Brusa, M, additional, Buitrago, F, additional, Caputi, K I, additional, Cassata, P, additional, Charlot, S, additional, Citro, A, additional, Cresci, G, additional, Cristiani, S, additional, Curtis-Lake, E, additional, Dickinson, M, additional, Fazio, G G, additional, Ferguson, H C, additional, Fiore, F, additional, Franco, M, additional, Fynbo, J P U, additional, Galametz, A, additional, Georgakakis, A, additional, Giavalisco, M, additional, Grazian, A, additional, Hathi, N P, additional, Jung, I, additional, Kim, S, additional, Koekemoer, A M, additional, Khusanova, Y, additional, Fèvre, O Le, additional, Lotz, J M, additional, Mannucci, F, additional, Maltby, D T, additional, Matsuoka, K, additional, McLeod, D J, additional, Mendez-Hernandez, H, additional, Mendez-Abreu, J, additional, Mignoli, M, additional, Moresco, M, additional, Mortlock, A, additional, Nonino, M, additional, Pannella, M, additional, Papovich, C, additional, Popesso, P, additional, Rosario, D P, additional, Salvato, M, additional, Santini, P, additional, Schaerer, D, additional, Schreiber, C, additional, Stark, D P, additional, Tasca, L A M, additional, Thomas, R, additional, Treu, T, additional, Vanzella, E, additional, Wild, V, additional, Williams, C C, additional, Zamorani, G, additional, and Zucca, E, additional

Published
2018
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9. Galaxy And Mass Assembly (GAMA): The mechanisms for quiescent galaxy formation at z < 1

Author

Rowlands, K., Wild, V., Bourne, N., Bremer, M., Brough, S., Driver, S. P., Hopkins, A. M., Owers, M. S., Phillipps, S., Pimbblet, K., Sansom, Anne E, Wang, L., Alpaslan, M., Bland-Hawthorn, J., Colless, M., Holwerda, B. W., Taylor, E. N., Rowlands, K., Wild, V., Bourne, N., Bremer, M., Brough, S., Driver, S. P., Hopkins, A. M., Owers, M. S., Phillipps, S., Pimbblet, K., Sansom, Anne E, Wang, L., Alpaslan, M., Bland-Hawthorn, J., Colless, M., Holwerda, B. W., and Taylor, E. N.

Abstract

One key problem in astrophysics is understanding how and why galaxies switch off their star formation, building the quiescent population that we observe in the local Universe. From the Galaxy And Mass Assembly and VIsible MultiObject Spectrograph Public Extragalactic Redshift surveys, we use spectroscopic indices to select quiescent and candidate transition galaxies. We identify potentially rapidly transitioning post-starburst (PSB) galaxies and slower transitioning green-valley galaxies. Over the last 8 Gyr, the quiescent population has grown more slowly in number density at high masses ({M}_\ast >10^{11}{M_{&sun;}) than at intermediate masses ({M}_\ast >10^{10.6}{M_{&sun;}). There is evolution in both the PSB and green-valley stellar mass functions, consistent with higher mass galaxies quenching at earlier cosmic times. At intermediate masses ({M}_\ast >10^{10.6}{M_{&sun;}), we find a green-valley transition time-scale of 2.6 Gyr. Alternatively, at z ~ 0.7, the entire growth rate could be explained by fast-quenching PSB galaxies, with a visibility time-scale of 0.5 Gyr. At lower redshift, the number density of PSBs is so low that an unphysically short visibility window would be required for them to contribute significantly to the quiescent population growth. The importance of the fast-quenching route may rapidly diminish at z < 1. However, at high masses ({M}_\ast >10^{11}{M_{&sun;}), there is tension between the large number of candidate transition galaxies compared to the slow growth of the quiescent population. This could be resolved if not all high-mass PSB and green-valley galaxies are transitioning from star forming to quiescent, for example if they rejuvenate out of the quiescent population following the accretion of gas and triggering of star formation, or if they fail to completely quench their star formation.

Published
2018

10. Dust attenuation in 2 < z < 3 star-forming galaxies from deep ALMA observations of the Hubble Ultra Deep Field

Author

McLure, R J, primary, Dunlop, J S, additional, Cullen, F, additional, Bourne, N, additional, Best, P N, additional, Khochfar, S, additional, Bowler, R A A, additional, Biggs, A D, additional, Geach, J E, additional, Scott, D, additional, Michałowski, M J, additional, Rujopakarn, W, additional, van Kampen, E, additional, Kirkpatrick, A, additional, and Pope, A, additional

Published
2018
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11. The VANDELS survey: dust attenuation in star-forming galaxies at z = 3-4

Author

Cullen, F, primary, McLure, R J, additional, Khochfar, S, additional, Dunlop, J S, additional, Dalla Vecchia, C, additional, Carnall, A C, additional, Bourne, N, additional, Castellano, M, additional, Cimatti, A, additional, Cirasuolo, M, additional, Elbaz, D, additional, Fynbo, J P U, additional, Garilli, B, additional, Koekemoer, A, additional, Marchi, F, additional, Pentericci, L, additional, Talia, M, additional, and Zamorani, G, additional

Published
2018
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12. The SCUBA-2 Cosmology Legacy Survey: The EGS deep field – II. Morphological transformation and multiwavelength properties of faint submillimetre galaxies

Author

Zavala, J A, primary, Aretxaga, I, additional, Dunlop, J S, additional, Michałowski, M J, additional, Hughes, D H, additional, Bourne, N, additional, Chapin, E, additional, Cowley, W, additional, Farrah, D, additional, Lacey, C, additional, Targett, T, additional, and van der Werf, P, additional

Published
2018
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13. ALMA observations of lensed Herschel sources: testing the dark matter halo paradigm

Author

Amvrosiadis, A, primary, Eales, S A, additional, Negrello, M, additional, Marchetti, L, additional, Smith, M W L, additional, Bourne, N, additional, Clements, D L, additional, De Zotti, G, additional, Dunne, L, additional, Dye, S, additional, Furlanetto, C, additional, Ivison, R J, additional, Maddox, S J, additional, Valiante, E, additional, Baes, M, additional, Baker, A J, additional, Cooray, A, additional, Crawford, S M, additional, Frayer, D, additional, Harris, A, additional, Michałowski, M J, additional, Nayyeri, H, additional, Oliver, S, additional, Riechers, D A, additional, Serjeant, S, additional, and Vaccari, M, additional

Published
2018
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15. LOFAR/H-ATLAS: the low-frequency radio luminosity–star formation rate relation

Author

Gürkan, G, primary, Hardcastle, M J, additional, Smith, D J B, additional, Best, P N, additional, Bourne, N, additional, Calistro-Rivera, G, additional, Heald, G, additional, Jarvis, M J, additional, Prandoni, I, additional, Röttgering, H J A, additional, Sabater, J, additional, Shimwell, T, additional, Tasse, C, additional, and Williams, W L, additional

Published
2018
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16. Galaxy And Mass Assembly: the G02 field, Herschel–ATLAS target selection and data release 3

Author

Baldry, I K, primary, Liske, J, additional, Brown, M J I, additional, Robotham, A S G, additional, Driver, S P, additional, Dunne, L, additional, Alpaslan, M, additional, Brough, S, additional, Cluver, M E, additional, Eardley, E, additional, Farrow, D J, additional, Heymans, C, additional, Hildebrandt, H, additional, Hopkins, A M, additional, Kelvin, L S, additional, Loveday, J, additional, Moffett, A J, additional, Norberg, P, additional, Owers, M S, additional, Taylor, E N, additional, Wright, A H, additional, Bamford, S P, additional, Bland-Hawthorn, J, additional, Bourne, N, additional, Bremer, M N, additional, Colless, M, additional, Conselice, C J, additional, Croom, S M, additional, Davies, L J M, additional, Foster, C, additional, Grootes, M W, additional, Holwerda, B W, additional, Jones, D H, additional, Kafle, P R, additional, Kuijken, K, additional, Lara-Lopez, M A, additional, López-Sánchez, Á R, additional, Meyer, M J, additional, Phillipps, S, additional, Sutherland, W J, additional, van Kampen, E, additional, and Wilkins, S M, additional

Published
2017
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17. Galaxy And Mass Assembly (GAMA): The mechanisms for quiescent galaxy formation at z < 1

Author

Rowlands, K., primary, Wild, V., additional, Bourne, N., additional, Bremer, M., additional, Brough, S., additional, Driver, S. P., additional, Hopkins, A. M., additional, Owers, M. S., additional, Phillipps, S., additional, Pimbblet, K., additional, Sansom, A. E., additional, Wang, L., additional, Alpaslan, M., additional, Bland-Hawthorn, J., additional, Colless, M., additional, Holwerda, B. W., additional, and Taylor, E. N., additional

Published
2017
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18. The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations

Author

Bakx, Tom J. L. C., primary, Eales, S. A., additional, Negrello, M., additional, Smith, M. W. L., additional, Valiante, E., additional, Holland, W. S., additional, Baes, M., additional, Bourne, N., additional, Clements, D. L., additional, Dannerbauer, H., additional, De Zotti, G., additional, Dunne, L., additional, Dye, S., additional, Furlanetto, C., additional, Ivison, R. J., additional, Maddox, S., additional, Marchetti, L., additional, Michałowski, M. J., additional, Omont, A., additional, Oteo, I., additional, Wardlow, J. L., additional, van der Werf, P., additional, and Yang, C., additional

Published
2017
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19. The mean star formation rates of unobscured QSOs: searching for evidence of suppressed or enhanced star formation

Author

Stanley, F., primary, Alexander, D. M., additional, Harrison, C. M., additional, Rosario, D. J., additional, Wang, L., additional, Aird, J. A., additional, Bourne, N., additional, Dunne, L., additional, Dye, S., additional, Eales, S., additional, Knudsen, K. K., additional, Michałowski, M. J., additional, Valiante, E., additional, De Zotti, G., additional, Furlanetto, C., additional, Ivison, R., additional, Maddox, S., additional, and Smith, M. W. L., additional

Published
2017
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20. Erratum: Evolution of cosmic star formation in the SCUBA-2 Cosmology Legacy Survey

Author

Bourne, N., primary, Dunlop, J. S., additional, Merlin, E., additional, Parsa, S., additional, Schreiber, C., additional, Castellano, M., additional, Conselice, C. J., additional, Coppin, K. E. K., additional, Farrah, D., additional, Fontana, A., additional, Geach, J. E., additional, Halpern, M., additional, Knudsen, K. K., additional, Michałowski, M. J., additional, Mortlock, A., additional, Santini, P., additional, Scott, D., additional, Shu, X. W., additional, Simpson, C., additional, Simpson, J. M., additional, Smith, D. J. B., additional, and van der Werf, P. P., additional

Published
2017
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22. VALES I: the molecular gas content in star-forming dusty H-ATLAS galaxies up to z = 0.35

Author

Villanueva, V., primary, Ibar, E., additional, Hughes, T. M., additional, Lara-López, M. A., additional, Dunne, L., additional, Eales, S., additional, Ivison, R. J., additional, Aravena, M., additional, Baes, M., additional, Bourne, N., additional, Cassata, P., additional, Cooray, A., additional, Dannerbauer, H., additional, Davies, L. J. M., additional, Driver, S. P., additional, Dye, S., additional, Furlanetto, C., additional, Herrera-Camus, R., additional, Maddox, S. J., additional, Michałowski, M. J., additional, Molina, J., additional, Riechers, D., additional, Sansom, A. E., additional, Smith, M. W. L., additional, Rodighiero, G., additional, Valiante, E., additional, and van der Werf, P., additional

Published
2017
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23. Galaxy And Mass Assembly: the evolution of the cosmic spectral energy distribution from z = 1 to z = 0

Author

Andrews, S. K., primary, Driver, S. P., additional, Davies, L. J. M., additional, Kafle, P. R., additional, Robotham, A. S. G., additional, Vinsen, K., additional, Wright, A. H., additional, Bland-Hawthorn, J., additional, Bourne, N., additional, Bremer, M., additional, da Cunha, E., additional, Drinkwater, M., additional, Holwerda, B., additional, Hopkins, A. M., additional, Kelvin, L. S., additional, Loveday, J., additional, Phillipps, S., additional, and Wilkins, S., additional

Published
2017
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24. The SCUBA-2 Cosmology Legacy Survey: the nature of bright submm galaxies from 2 deg2 of 850-μm imaging

Author

Michałowski, Michał J., primary, Dunlop, J. S., additional, Koprowski, M. P., additional, Cirasuolo, M., additional, Geach, J. E., additional, Bowler, R. A. A., additional, Mortlock, A., additional, Caputi, K. I., additional, Aretxaga, I., additional, Arumugam, V., additional, Chen, Chian-Chou, additional, McLure, R. J., additional, Birkinshaw, M., additional, Bourne, N., additional, Farrah, D., additional, Ibar, E., additional, van der Werf, P., additional, and Zemcov, M., additional

Published
2017
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25. VALES I: the molecular gas content in star-forming dusty H-ATLAS galaxies up to z = 0.35

Author

Villanueva, V., Ibar, E., Hughes, T. M., Lara-López, M. A., Dunne, L., Eales, S., Ivison, R. J., Aravena, M., Baes, M., Bourne, N., Cassata, P., Cooray, A., Dannerbauer, H., Davies, L. J. M., Driver, S. P., Dye, S., Furlanetto, C., Herrera-Camus, R., Maddox, S. J., Michałowski, M. J., Molina, J., Riechers, D., Sansom, Anne E, Smith, M. W. L., Rodighiero, G., Valiante, E., van der Werf, P., Villanueva, V., Ibar, E., Hughes, T. M., Lara-López, M. A., Dunne, L., Eales, S., Ivison, R. J., Aravena, M., Baes, M., Bourne, N., Cassata, P., Cooray, A., Dannerbauer, H., Davies, L. J. M., Driver, S. P., Dye, S., Furlanetto, C., Herrera-Camus, R., Maddox, S. J., Michałowski, M. J., Molina, J., Riechers, D., Sansom, Anne E, Smith, M. W. L., Rodighiero, G., Valiante, E., and van der Werf, P.

Published
2017

26. Galaxy and mass assembly: The 1.4 GHz SFR indicator, SFR-M∗ relation and predictions for ASKAP-GAMA

Author

Davies, LJM, Huynh, MT, Hopkins, AM, Seymour, N, Driver, SP, Robotham, AGR, Baldry, IK, Bland-Hawthorn, J, Bourne, N, Bremer, MN, Brown, MJI, Brough, S ; https://orcid.org/0000-0002-9796-1363, Cluver, M, Grootes, MW, Jarvis, M, Loveday, J, Moffet, A, Owers, M, Phillipps, S, Sadler, E, Wang, L, Wilkins, S, Wright, A, Davies, LJM, Huynh, MT, Hopkins, AM, Seymour, N, Driver, SP, Robotham, AGR, Baldry, IK, Bland-Hawthorn, J, Bourne, N, Bremer, MN, Brown, MJI, Brough, S ; https://orcid.org/0000-0002-9796-1363, Cluver, M, Grootes, MW, Jarvis, M, Loveday, J, Moffet, A, Owers, M, Phillipps, S, Sadler, E, Wang, L, Wilkins, S, and Wright, A

Abstract

We present a robust calibration of the 1.4 GHz radio continuum star formation rate (SFR) using a combination of the Galaxy And Mass Assembly (GAMA) survey and the Faint Images of the Radio Sky at Twenty-cm (FIRST) survey. We identify individually detected 1.4 GHz GAMA-FIRST sources and use a late-type, non-active galactic nucleus, volume-limited sample from GAMA to produce stellar mass-selected samples. The latter are then combined to produce FIRST-stacked images. This extends the robust parametrization of the 1.4 GHz-SFR relation to faint luminosities. For both the individually detected galaxies and our stacked samples, we compare 1.4 GHz luminosity to SFRs derived from GAMA to determine a new 1.4 GHz luminosity-to-SFR relation with well-constrained slope and normalization. For the first time, we produce the radio SFR-M∗ relation over 2 decades in stellar mass, and find that our new calibration is robust, and produces a SFR-M∗ relation which is consistent with all other GAMA SFR methods. Finally, using our new 1.4 GHz luminosity-to-SFR calibration we make predictions for the number of star-forming GAMA sources which are likely to be detected in the upcoming Australian Square Kilometre Array Pathfinder surveys, Evolutionary Map of the Universe and Deep Investigation of Neutral Gas Origins.

Published
2017

27. VALES – III. The calibration between the dust continuum and interstellar gas content of star-forming galaxies

Author

Hughes, T. M., primary, Ibar, E., additional, Villanueva, V., additional, Aravena, M., additional, Baes, M., additional, Bourne, N., additional, Cooray, A., additional, Davies, L. J. M., additional, Driver, S., additional, Dunne, L., additional, Dye, S., additional, Eales, S., additional, Furlanetto, C., additional, Herrera-Camus, R., additional, Ivison, R. J., additional, van Kampen, E., additional, Lara-López, M. A., additional, Maddox, S., additional, Michałowski, M. J., additional, Oteo, I., additional, Smith, D., additional, Smith, M. W. L., additional, Valiante, E., additional, van der Werf, P., additional, Viaene, S., additional, and Xue, Y. Q., additional

Published
2017
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28. Evolution of cosmic star formation in the SCUBA-2 Cosmology Legacy Survey

Author

Bourne, N., primary, Dunlop, J. S., additional, Merlin, E., additional, Parsa, S., additional, Schreiber, C., additional, Castellano, M., additional, Conselice, C. J., additional, Coppin, K. E. K., additional, Farrah, D., additional, Fontana, A., additional, Geach, J. E., additional, Halpern, M., additional, Knudsen, K. K., additional, Michałowski, M. J., additional, Mortlock, A., additional, Santini, P., additional, Scott, D., additional, Shu, X. W., additional, Simpson, C., additional, Simpson, J. M., additional, Smith, D. J. B., additional, and van der Werf, P. P., additional

Published
2017
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29. The Herschel-ATLAS Data Release 1 – II. Multi-wavelength counterparts to submillimetre sources

Author

Bourne, N., Dunne, L., Maddox, S. J., Dye, S., Furlanetto, C., Hoyos, C., Smith, D. J. B., Eales, S., Smith, M. W. L., Valiante, E., Alpaslan, M., Andrae, E., Baldry, I. K., Cluver, M. E., Cooray, A., Driver, S. P., Dunlop, J. S., Grootes, M. W., Ivison, R. J., Jarrett, T. H., Liske, J., Madore, B. F., Popescu, Cristina, Robotham, A. G., Rowlands, K., Seibert, M., Thompson, M. A., Tuffs, R. J., Viaene, S., Wright, A. H., Bourne, N., Dunne, L., Maddox, S. J., Dye, S., Furlanetto, C., Hoyos, C., Smith, D. J. B., Eales, S., Smith, M. W. L., Valiante, E., Alpaslan, M., Andrae, E., Baldry, I. K., Cluver, M. E., Cooray, A., Driver, S. P., Dunlop, J. S., Grootes, M. W., Ivison, R. J., Jarrett, T. H., Liske, J., Madore, B. F., Popescu, Cristina, Robotham, A. G., Rowlands, K., Seibert, M., Thompson, M. A., Tuffs, R. J., Viaene, S., and Wright, A. H.

Published
2016

30. H-ATLAS: the far-infrared properties of galaxies in and around the coma cluster

Author

Fuller, C, Davies, JI, Smith, MWL, Valiante, E, Eales, S, Bourne, N, Dunne, L, Dye, S, Furlanetto, C, Ibar, E, Ivison, R, Maddox, S, Sansom, AE, Michałowski, MJ, Davis, T, Fuller, C, Davies, JI, Smith, MWL, Valiante, E, Eales, S, Bourne, N, Dunne, L, Dye, S, Furlanetto, C, Ibar, E, Ivison, R, Maddox, S, Sansom, AE, Michałowski, MJ, and Davis, T

Published
2016

32. Galaxy And Mass Assembly: Accurate panchromatic photometry from optical priors using LAMBDAR

Author

Wright, AH, Robotham, ASG, Bourne, N, Driver, SP, Dunne, L, Maddox, SJ, Alpaslan, M, Andrews, SK, Bauer, AE, Bland-Hawthorn, J, Brough, S ; https://orcid.org/0000-0002-9796-1363, Brown, MJI, Clarke, C, Cluver, M, Davies, LJM, Grootes, MW, Holwerda, BW, Hopkins, AM, Jarrett, TH, Kafle, PR, Lange, R, Liske, J, Loveday, J, Moffett, AJ, Norberg, P, Popescu, CC, Smith, M, Taylor, EN, Tuffs, RJ, Wang, L, Wilkins, SM, Wright, AH, Robotham, ASG, Bourne, N, Driver, SP, Dunne, L, Maddox, SJ, Alpaslan, M, Andrews, SK, Bauer, AE, Bland-Hawthorn, J, Brough, S ; https://orcid.org/0000-0002-9796-1363, Brown, MJI, Clarke, C, Cluver, M, Davies, LJM, Grootes, MW, Holwerda, BW, Hopkins, AM, Jarrett, TH, Kafle, PR, Lange, R, Liske, J, Loveday, J, Moffett, AJ, Norberg, P, Popescu, CC, Smith, M, Taylor, EN, Tuffs, RJ, Wang, L, and Wilkins, SM

Abstract

We present the Lambda Adaptive Multi-Band Deblending Algorithm in R (LAMBDAR), a novel code for calculating matched aperture photometry across images that are neither pixel- nor PSF-matched, using prior aperture definitions derived from high-resolution optical imaging. The development of this program is motivated by the desire for consistent photometry and uncertainties across large ranges of photometric imaging, for use in calculating spectral energy distributions. We describe the program, specifically key features required for robust determination of panchromatic photometry: propagation of apertures to images with arbitrary resolution, local background estimation, aperture normalization, uncertainty determination and propagation, and object deblending. Using simulated images, we demonstrate that the program is able to recover accurate photometric measurements in both high-resolution, low-confusion, and low-resolution, high-confusion, regimes. We apply the program to the 21-band photometric data set from the Galaxy And Mass Assembly (GAMA) Panchromatic Data Release (PDR; Driver et al. 2016), which contains imaging spanning the far-UV to the far-IR. We compare photometry derived from LAMBDAR with that presented in Driver et al. (2016), finding broad agreement between the data sets. None the less, we demonstrate that the photometry from LAMBDAR is superior to that from the GAMA PDR, as determined by a reduction in the outlier rate and intrinsic scatter of colours in the LAMBDAR data set. We similarly find a decrease in the outlier rate of stellar masses and star formation rates using LAMBDAR photometry. Finally, we note an exceptional increase in the number of UV and mid-IR sources able to be constrained, which is accompanied by a significant increase in the mid-IR colour-colour parameter-space able to be explored.

Published
2016

33. GAMA/H-ATLAS: A meta-analysis of SFR indicators - comprehensive measures of the SFR-M* relation and cosmic star formation history at z < 0.4

Author

Davies, LJM, Driver, SP, Robotham, ASG, Grootes, MW, Popescu, CC, Tuffs, RJ, Hopkins, A, Alpaslan, M, Andrews, SK, Bland-Hawthorn, J, Bremer, MN, Brough, S ; https://orcid.org/0000-0002-9796-1363, Brown, MJI, Cluver, ME, Croom, S, da Cunha, E, Dunne, L, Lara-López, MA, Liske, J, Loveday, J, Moffett, AJ, Owers, M, Phillipps, S, Sansom, AE, Taylor, EN, Michalowski, MJ, Ibar, E, Smith, M, Bourne, N, Davies, LJM, Driver, SP, Robotham, ASG, Grootes, MW, Popescu, CC, Tuffs, RJ, Hopkins, A, Alpaslan, M, Andrews, SK, Bland-Hawthorn, J, Bremer, MN, Brough, S ; https://orcid.org/0000-0002-9796-1363, Brown, MJI, Cluver, ME, Croom, S, da Cunha, E, Dunne, L, Lara-López, MA, Liske, J, Loveday, J, Moffett, AJ, Owers, M, Phillipps, S, Sansom, AE, Taylor, EN, Michalowski, MJ, Ibar, E, Smith, M, and Bourne, N

Abstract

We present a meta-analysis of star formation rate (SFR) indicators in the Galaxy And Mass Assembly (GAMA) survey, producing 12 different SFR metrics and determining the SFR- M* relation for each. We compare and contrast published methods to extract the SFR from each indicator, using a well-defined local sample of morphologically selected spiral galaxies, which excludes sources which potentially have large recent changes to their SFR. The different methods are found to yield SFR-M* relations with inconsistent slopes and normalizations, suggesting differences between calibration methods. The recovered SFR-M* relations also have a large range in scatter which, as SFRs of the targets may be considered constant over the different time-scales, suggests differences in the accuracy by which methods correct for attenuation in individual targets. We then recalibrate all SFR indicators to provide new, robust and consistent luminosity-to-SFR calibrations, finding that the most consistent slopes and normalizations of the SFR-M* relations are obtained when recalibrated using the radiation transfer method of Popescu et al. These new calibrations can be used to directly compare SFRs across different observations, epochs and galaxy populations. We then apply our calibrations to the GAMA II equatorial data set and explore the evolution of star formation in the local Universe. We determine the evolution of the normalization to the SFR-M* relation from 0 < z < 0.35-finding consistent trends with previous estimates at 0.3 < z < 1.2. We then provide the definitive z < 0.35 cosmic star formation history, SFR-M* relation and its evolution over the last 3 billion years.

Published
2016

34. Galaxy and mass assembly (GAMA): Panchromatic data release (far-UV-far-IR) and the low-z energy budget

Author

Driver, SP, Wright, AH, Andrews, SK, Davies, LJ, Kafle, PR, Lange, R, Moffett, AJ, Mannering, E, Robotham, ASG, Vinsen, K, Alpaslan, M, Andrae, E, Baldry, IK, Bauer, AE, Bamford, SP, Bland-Hawthorn, J, Bourne, N, Brough, S ; https://orcid.org/0000-0002-9796-1363, Brown, MJI, Cluver, ME, Croom, S, Colless, M, Conselice, CJ, da Cunha, E, De Propris, R, Drinkwater, M, Dunne, L, Eales, S, Edge, A, Frenk, C, Graham, AW, Grootes, M, Holwerda, BW, Hopkins, AM, Ibar, E, Van Kampen, E, Kelvin, LS, Jarrett, T, Heath Jones, D, Lara-Lopez, MA, Liske, J, Lopez-Sanchez, AR, Loveday, J, Maddox, SJ, Madore, B, Mahajan, S, Meyer, M, Norberg, P, Penny, SJ, Phillipps, S, Popescu, C, Tuffs, RJ, Peacock, JA, Pimbblet, KA, Prescott, M, Rowlands, K, Sansom, AE, Seibert, M, Smith, MWL, Sutherland, WJ, Taylor, EN, Valiante, E, Antonio Vazquez-Mata, J, Wang, L, Wilkins, SM, Williams, R, Driver, SP, Wright, AH, Andrews, SK, Davies, LJ, Kafle, PR, Lange, R, Moffett, AJ, Mannering, E, Robotham, ASG, Vinsen, K, Alpaslan, M, Andrae, E, Baldry, IK, Bauer, AE, Bamford, SP, Bland-Hawthorn, J, Bourne, N, Brough, S ; https://orcid.org/0000-0002-9796-1363, Brown, MJI, Cluver, ME, Croom, S, Colless, M, Conselice, CJ, da Cunha, E, De Propris, R, Drinkwater, M, Dunne, L, Eales, S, Edge, A, Frenk, C, Graham, AW, Grootes, M, Holwerda, BW, Hopkins, AM, Ibar, E, Van Kampen, E, Kelvin, LS, Jarrett, T, Heath Jones, D, Lara-Lopez, MA, Liske, J, Lopez-Sanchez, AR, Loveday, J, Maddox, SJ, Madore, B, Mahajan, S, Meyer, M, Norberg, P, Penny, SJ, Phillipps, S, Popescu, C, Tuffs, RJ, Peacock, JA, Pimbblet, KA, Prescott, M, Rowlands, K, Sansom, AE, Seibert, M, Smith, MWL, Sutherland, WJ, Taylor, EN, Valiante, E, Antonio Vazquez-Mata, J, Wang, L, Wilkins, SM, and Williams, R

Published
2016

35. H-ATLAS/GAMA: The nature and characteristics of optically red galaxies detected at submillimetre wavelengths

Author

Dariush, A, Dib, S, Hony, S, Smith, DJB, Zhukovska, S, Dunne, L, Eales, S, Andrae, E, Baes, M, Baldry, I, Bauer, A, Bland-Hawthorn, J, Brough, S ; https://orcid.org/0000-0002-9796-1363, Bourne, N, Cava, A, Clements, D, Cluver, M, Cooray, A, De Zotti, G, Driver, S, Grootes, MW, Hopkins, AM, Hopwood, R, Kaviraj, S, Kelvin, L, Lara-Lopez, MA, Liske, J, Loveday, J, Maddox, S, Madore, B, Michałowski, MJ, Pearson, C, Popescu, C, Robotham, A, Rowlands, K, Seibert, M, Shabani, F, Smith, MWL, Taylor, EN, Tuffs, R, Valiante, E, Virdee, JS, Dariush, A, Dib, S, Hony, S, Smith, DJB, Zhukovska, S, Dunne, L, Eales, S, Andrae, E, Baes, M, Baldry, I, Bauer, A, Bland-Hawthorn, J, Brough, S ; https://orcid.org/0000-0002-9796-1363, Bourne, N, Cava, A, Clements, D, Cluver, M, Cooray, A, De Zotti, G, Driver, S, Grootes, MW, Hopkins, AM, Hopwood, R, Kaviraj, S, Kelvin, L, Lara-Lopez, MA, Liske, J, Loveday, J, Maddox, S, Madore, B, Michałowski, MJ, Pearson, C, Popescu, C, Robotham, A, Rowlands, K, Seibert, M, Shabani, F, Smith, MWL, Taylor, EN, Tuffs, R, Valiante, E, and Virdee, JS

Published
2016

36. Galaxy And Mass Assembly: the 1.4 GHz SFR indicator, SFR–M*relation and predictions for ASKAP–GAMA

Author

Davies, L. J. M., primary, Huynh, M. T., additional, Hopkins, A. M., additional, Seymour, N., additional, Driver, S. P., additional, Robotham, A. G. R., additional, Baldry, I. K., additional, Bland-Hawthorn, J., additional, Bourne, N., additional, Bremer, M. N., additional, Brown, M. J. I., additional, Brough, S., additional, Cluver, M., additional, Grootes, M. W., additional, Jarvis, M., additional, Loveday, J., additional, Moffet, A., additional, Owers, M., additional, Phillipps, S., additional, Sadler, E., additional, Wang, L., additional, Wilkins, S., additional, and Wright, A., additional

Published
2016
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37. TheHerschel-ATLAS: a sample of 500 μm-selected lensed galaxies over 600 deg2

Author

Negrello, M., primary, Amber, S., additional, Amvrosiadis, A., additional, Cai, Z.-Y., additional, Lapi, A., additional, Gonzalez-Nuevo, J., additional, De Zotti, G., additional, Furlanetto, C., additional, Maddox, S. J., additional, Allen, M., additional, Bakx, T., additional, Bussmann, R. S., additional, Cooray, A., additional, Covone, G., additional, Danese, L., additional, Dannerbauer, H., additional, Fu, H., additional, Greenslade, J., additional, Gurwell, M., additional, Hopwood, R., additional, Koopmans, L. V. E., additional, Napolitano, N., additional, Nayyeri, H., additional, Omont, A., additional, Petrillo, C. E., additional, Riechers, D. A., additional, Serjeant, S., additional, Tortora, C., additional, Valiante, E., additional, Verdoes Kleijn, G., additional, Vernardos, G., additional, Wardlow, J. L., additional, Baes, M., additional, Baker, A. J., additional, Bourne, N., additional, Clements, D., additional, Crawford, S. M., additional, Dye, S., additional, Dunne, L., additional, Eales, S., additional, Ivison, R. J., additional, Marchetti, L., additional, Michałowski, M. J., additional, Smith, M. W. L., additional, Vaccari, M., additional, and van der Werf, P., additional

Published
2016
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38. Herschel-ATLAS: revealing dust build-up and decline across gas, dust and stellar mass selected samples – I. Scaling relations

Author

De Vis, P., primary, Dunne, L., additional, Maddox, S., additional, Gomez, H. L., additional, Clark, C. J. R., additional, Bauer, A. E., additional, Viaene, S., additional, Schofield, S. P., additional, Baes, M., additional, Baker, A. J., additional, Bourne, N., additional, Driver, S. P., additional, Dye, S., additional, Eales, S. A., additional, Furlanetto, C., additional, Ivison, R. J., additional, Robotham, A. S. G., additional, Rowlands, K., additional, Smith, D. J. B., additional, Smith, M. W. L., additional, Valiante, E., additional, and Wright, A. H., additional

Published
2016
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39. TheHerschel -ATLAS data release 1 – I. Maps, catalogues and number counts

Author

Valiante, E., primary, Smith, M. W. L., additional, Eales, S., additional, Maddox, S. J., additional, Ibar, E., additional, Hopwood, R., additional, Dunne, L., additional, Cigan, P. J., additional, Dye, S., additional, Pascale, E., additional, Rigby, E. E., additional, Bourne, N., additional, Furlanetto, C., additional, and Ivison, R. J., additional

Published
2016
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40. LOFAR/H-ATLAS: a deep low-frequency survey of theHerschel-ATLAS North Galactic Pole field

Author

Hardcastle, M. J., primary, Gürkan, G., additional, van Weeren, R. J., additional, Williams, W. L., additional, Best, P. N., additional, de Gasperin, F., additional, Rafferty, D. A., additional, Read, S. C., additional, Sabater, J., additional, Shimwell, T. W., additional, Smith, D. J. B., additional, Tasse, C., additional, Bourne, N., additional, Brienza, M., additional, Brüggen, M., additional, Brunetti, G., additional, Chyży, K. T., additional, Conway, J., additional, Dunne, L., additional, Eales, S. A., additional, Maddox, S. J., additional, Jarvis, M. J., additional, Mahony, E. K., additional, Morganti, R., additional, Prandoni, I., additional, Röttgering, H. J. A., additional, Valiante, E., additional, and White, G. J., additional

Published
2016
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41. TheHerschel-ATLAS Data Release 1 – II. Multi-wavelength counterparts to submillimetre sources

Author

Bourne, N., primary, Dunne, L., additional, Maddox, S. J., additional, Dye, S., additional, Furlanetto, C., additional, Hoyos, C., additional, Smith, D. J. B., additional, Eales, S., additional, Smith, M. W. L., additional, Valiante, E., additional, Alpaslan, M., additional, Andrae, E., additional, Baldry, I. K., additional, Cluver, M. E., additional, Cooray, A., additional, Driver, S. P., additional, Dunlop, J. S., additional, Grootes, M. W., additional, Ivison, R. J., additional, Jarrett, T. H., additional, Liske, J., additional, Madore, B. F., additional, Popescu, C. C., additional, Robotham, A. G., additional, Rowlands, K., additional, Seibert, M., additional, Thompson, M. A., additional, Tuffs, R. J., additional, Viaene, S., additional, and Wright, A. H., additional

Published
2016
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42. GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters

Author

Wang, L., primary, Norberg, P., additional, Gunawardhana, M. L. P., additional, Heinis, S., additional, Baldry, I. K., additional, Bland-Hawthorn, J., additional, Bourne, N., additional, Brough, S., additional, Brown, M. J. I., additional, Cluver, M. E., additional, Cooray, A., additional, da Cunha, E., additional, Driver, S. P., additional, Dunne, L., additional, Dye, S., additional, Eales, S., additional, Grootes, M. W., additional, Holwerda, B. W., additional, Hopkins, A. M., additional, Ibar, E., additional, Ivison, R., additional, Lacey, C., additional, Lara-Lopez, M. A., additional, Loveday, J., additional, Maddox, S. J., additional, Michałowski, M. J., additional, Oteo, I., additional, Owers, M. S., additional, Popescu, C. C., additional, Smith, D. J. B., additional, Taylor, E. N., additional, Tuffs, R. J., additional, and van der Werf, P., additional

Published
2016
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43. GAMA/H-ATLAS: a meta-analysis of SFR indicators – comprehensive measures of the SFR–M*relation and cosmic star formation history atz < 0.4

Author

Davies, L. J. M., primary, Driver, S. P., additional, Robotham, A. S. G., additional, Grootes, M. W., additional, Popescu, C. C., additional, Tuffs, R. J., additional, Hopkins, A., additional, Alpaslan, M., additional, Andrews, S. K., additional, Bland-Hawthorn, J., additional, Bremer, M. N., additional, Brough, S., additional, Brown, M. J. I., additional, Cluver, M. E., additional, Croom, S., additional, da Cunha, E., additional, Dunne, L., additional, Lara-López, M. A., additional, Liske, J., additional, Loveday, J., additional, Moffett, A. J., additional, Owers, M., additional, Phillipps, S., additional, Sansom, A. E., additional, Taylor, E. N., additional, Michalowski, M. J., additional, Ibar, E., additional, Smith, M., additional, and Bourne, N., additional

Published
2016
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44. H-ATLAS: a candidate high redshift cluster/protocluster of star-forming galaxies

Author

Clements, D. L., primary, Braglia, F., additional, Petitpas, G., additional, Greenslade, J., additional, Cooray, A., additional, Valiante, E., additional, De Zotti, G., additional, O'Halloran, B., additional, Holdship, J., additional, Morris, B., additional, Pérez-Fournon, I., additional, Herranz, D., additional, Riechers, D., additional, Baes, M., additional, Bremer, M., additional, Bourne, N., additional, Dannerbauer, H., additional, Dariush, A., additional, Dunne, L., additional, Eales, S., additional, Fritz, J., additional, Gonzalez-Nuevo, J., additional, Hopwood, R., additional, Ibar, E., additional, Ivison, R. J., additional, Leeuw, L. L., additional, Maddox, S., additional, Michałowski, M. J., additional, Negrello, M., additional, Omont, A., additional, Oteo, I., additional, Serjeant, S., additional, Valtchanov, I., additional, Vieira, J. D., additional, Wardlow, J., additional, and van der Werf, P., additional

Published
2016
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45. Galaxy And Mass Assembly: accurate panchromatic photometry from optical priors using lambdar

Author

Wright, A. H., primary, Robotham, A. S. G., additional, Bourne, N., additional, Driver, S. P., additional, Dunne, L., additional, Maddox, S. J., additional, Alpaslan, M., additional, Andrews, S. K., additional, Bauer, A. E., additional, Bland-Hawthorn, J., additional, Brough, S., additional, Brown, M. J. I., additional, Clarke, C., additional, Cluver, M., additional, Davies, L. J. M., additional, Grootes, M. W., additional, Holwerda, B. W., additional, Hopkins, A. M., additional, Jarrett, T. H., additional, Kafle, P. R., additional, Lange, R., additional, Liske, J., additional, Loveday, J., additional, Moffett, A. J., additional, Norberg, P., additional, Popescu, C. C., additional, Smith, M., additional, Taylor, E. N., additional, Tuffs, R. J., additional, Wang, L., additional, and Wilkins, S. M., additional

Published
2016
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46. The SCUBA-2 Cosmology Legacy Survey: galaxies in the deep 850 μm survey, and the star-forming ‘main sequence’

Author

Koprowski, M. P., primary, Dunlop, J. S., additional, Michałowski, M. J., additional, Roseboom, I., additional, Geach, J. E., additional, Cirasuolo, M., additional, Aretxaga, I., additional, Bowler, R. A. A., additional, Banerji, M., additional, Bourne, N., additional, Coppin, K. E. K., additional, Chapman, S., additional, Hughes, D. H., additional, Jenness, T., additional, McLure, R. J., additional, Symeonidis, M., additional, and Werf, P. van der, additional

Published
2016
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47. H-ATLAS: the far-infrared properties of galaxies in and around the Coma cluster

Author

Fuller, C., primary, Davies, J. I., additional, Smith, M. W. L., additional, Valiante, E., additional, Eales, S., additional, Bourne, N., additional, Dunne, L., additional, Dye, S., additional, Furlanetto, C., additional, Ibar, E., additional, Ivison, R., additional, Maddox, S., additional, Sansom, A., additional, Michałowski, M. J., additional, and Davis, T., additional

Published
2016
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48. H-ATLAS/GAMA and HeViCS -dusty early-type galaxies in different environments

Author

Agius, NK, di Serego Alighieri, S, Viaene, S, Baes, M, Sansom, AE, Bourne, N, Bland-Hawthorn, J, Brough, S ; https://orcid.org/0000-0002-9796-1363, Davis, TA, De Looze, I, Driver, SP, Dunne, L, Dye, S, Eales, SA, Hughes, TM, Ivison, RJ, Kelvin, LS, Maddox, S, Mahajan, S, Pappalardo, C, Robotham, ASG, Rowlands, K, Temi, P, Valiante, E, Agius, NK, di Serego Alighieri, S, Viaene, S, Baes, M, Sansom, AE, Bourne, N, Bland-Hawthorn, J, Brough, S ; https://orcid.org/0000-0002-9796-1363, Davis, TA, De Looze, I, Driver, SP, Dunne, L, Dye, S, Eales, SA, Hughes, TM, Ivison, RJ, Kelvin, LS, Maddox, S, Mahajan, S, Pappalardo, C, Robotham, ASG, Rowlands, K, Temi, P, and Valiante, E

Abstract

The Herschel Space Observatory has had a tremendous impact on the study of extragalactic dust. Specifically, early-type galaxies (ETG) have been the focus of several studies. In this paper, we combine results from two Herschel studies -a Virgo cluster study Herschel Virgo Cluster Survey (HeViCS) and a broader, low-redshift Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS)/Galaxy and Mass Assembly (GAMA) study -and contrast the dust and associated properties for similar mass galaxies. This comparison is motivated by differences in results exhibited between multiple Herschel studies of ETG. A comparison between consistent modified blackbody derived dust mass is carried out, revealing strong differences between the two samples in both dust mass and dust-to-stellar mass ratio. In particular, the HeViCS sample lacks massive ETG with as high a specific dust content as found in H-ATLAS. This is most likely connected with the difference in environment for the two samples. We calculate nearest neighbour environment densities in a consistent way, showing that H-ATLAS ETG occupy sparser regions of the local Universe, whereas HeViCS ETG occupy dense regions. This is also true for ETG that are not Herschel-detected but are in the Virgo and GAMA parent samples. Spectral energy distributions are fit to the panchromatic data. From these, we find that in H-ATLAS the specific star formation rate anticorrelates with stellar mass and reaches values as high as in our Galaxy. On the other hand HeViCS ETG appear to have little star formation. Based on the trends found here, H-ATLAS ETG are thought to have more extended star formation histories and a younger stellar population than HeViCS ETG.

Published
2015

49. H-ATLAS/GAMA: Quantifying the morphological evolution of the galaxy population using cosmic calorimetry

Author

Eales, S, Fullard, A, Allen, M, Smith, MWL, Baldry, I, Bourne, N, Clark, CJR, Driver, S, Dunne, L, Dye, S, Graham, AW, Ibar, E, Hopkins, A, Ivison, R, Kelvin, LS, Maddox, S, Maraston, C, Robotham, ASG, Smith, D, Taylor, EN, Valiante, E, Van Der Werf, P, Baes, M, Brough, S ; https://orcid.org/0000-0002-9796-1363, Clements, D, Cooray, A, Gomez, H, Loveday, J, Phillipps, S, Scott, D, Serjeant, S, Eales, S, Fullard, A, Allen, M, Smith, MWL, Baldry, I, Bourne, N, Clark, CJR, Driver, S, Dunne, L, Dye, S, Graham, AW, Ibar, E, Hopkins, A, Ivison, R, Kelvin, LS, Maddox, S, Maraston, C, Robotham, ASG, Smith, D, Taylor, EN, Valiante, E, Van Der Werf, P, Baes, M, Brough, S ; https://orcid.org/0000-0002-9796-1363, Clements, D, Cooray, A, Gomez, H, Loveday, J, Phillipps, S, Scott, D, and Serjeant, S

Abstract

Using results from the Herschel Astrophysical Terrahertz Large-Area Survey (H-ATLAS) and the Galaxy and Mass Assembly (GAMA) project, we show that, for galaxy masses above ≃ 108M⊙, 51 per cent of the stellar mass-density in the local Universe is in earlytype galaxies (ETGs; Sérsic n > 2.5) while 89 per cent of the rate of production of stellar mass-density is occurring in late-type galaxies (LTGs; Sérsic n < 2.5). From this zeroredshift benchmark, we have used a calorimetric technique to quantify the importance of the morphological transformation of galaxies over the history of the Universe. The extragalactic background radiation contains all the energy generated by nuclear fusion in stars since the big bang. By resolving this background radiation into individual galaxies using the deepest farinfrared survey with the Herschel Space Observatory and a deep near-infrared/optical survey with the Hubble Space Telescope (HST), and using measurements of the Sérsic index of these galaxies derived from the HST images, we estimate that ≃ 83 per cent of the stellarmass-density formed over the history of the Universe occurred in LTGs. The difference between this value and the fraction of the stellar mass-density that is in LTGs today implies there must have been a major transformation of LTGs into ETGs after the formation of most of the stars.

Published
2015

50. Galaxy And Mass Assembly (GAMA): The effect of close interactions on star formation in galaxies

Author

Davies, LJM, Robotham, ASG, Driver, SP, Alpaslan, M, Baldry, IK, Bland-Hawthorn, J, Brough, S ; https://orcid.org/0000-0002-9796-1363, Brown, MJI, Cluver, ME, Drinkwater, MJ, Foster, C, Grootes, MW, Konstantopoulos, IS, Lara-López, MA, López-Sánchez, R, Loveday, J, Meyer, MJ, Moffett, AJ, Norberg, P, Owers, MS, Popescu, CC, De Propris, R, Sharp, R, Tuffs, RJ, Wang, L, Wilkins, SM, Dunne, L, Bourne, N, Smith, MWL, Foster-Guanzon, Caroline ; https://orcid.org/0000-0003-0247-1204, Davies, LJM, Robotham, ASG, Driver, SP, Alpaslan, M, Baldry, IK, Bland-Hawthorn, J, Brough, S ; https://orcid.org/0000-0002-9796-1363, Brown, MJI, Cluver, ME, Drinkwater, MJ, Foster, C, Grootes, MW, Konstantopoulos, IS, Lara-López, MA, López-Sánchez, R, Loveday, J, Meyer, MJ, Moffett, AJ, Norberg, P, Owers, MS, Popescu, CC, De Propris, R, Sharp, R, Tuffs, RJ, Wang, L, Wilkins, SM, Dunne, L, Bourne, N, Smith, MWL, and Foster-Guanzon, Caroline ; https://orcid.org/0000-0003-0247-1204

Abstract

The modification of star formation (SF) in galaxy interactions is a complex process, with SF observed to be both enhanced in major mergers and suppressed in minor pair interactions. Such changes likely to arise on short time-scales and be directly related to the galaxy-galaxy interaction time. Here we investigate the link between dynamical phase and direct measures of SF on different time-scales for pair galaxies, targeting numerous star- formation rate (SFR) indicators and comparing to pair separation, individual galaxy mass and pair mass ratio. We split our sample into the higher (primary) and lower (secondary) mass galaxies in each pair and find that SF is indeed enhanced in all primary galaxies but suppressed in secondaries of minor mergers. We find that changes in SF of primaries are consistent in both major and minor mergers, suggesting that SF in the more massive galaxy is agnostic to pair mass ratio. We also find that SF is enhanced/suppressed more strongly for short-duration SFR indicators (e.g. Ha), highlighting recent changes to SF in these galaxies, which are likely to be induced by the interaction. We propose a scenario where the lower mass galaxy has its SF suppressed by gas heating or stripping, while the higher mass galaxy has its SF enhanced, potentially by tidal gas turbulence and shocks. This is consistent with the seemingly contradictory observations for both SF suppression and enhancement in close pairs.

Published
2015

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