Search Results - "star formation"

Variations in the Galactic star formation rate and density thresholds for star formation by Longmore, S., Bally, J., Testi, L., Purcell, C., Walsh, Andrew, Bressert, E., Pestalozzi, M., Molinari, S., Ott, J., Cortese, L., Battersby, C., Murray, N., Lee, E., Kruijssen, J., Schisano, E., Elia, D.

“…These star formation prescriptions appear to hold in nearby molecular clouds in our MilkyWay Galaxy’s disc as well as in distant galaxies where the star formation rates are often much larger. …”
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The mean star formation rates of unobscured QSOs: searching for evidence of suppressed or enhanced star formation by Stanley, F., Alexander, D.M., Harrison, C.M., Rosario, D.J., Wang, L., Aird, J.A., Bourne, N., Dunne, L., Dye, S., Eales, S., Knudsen, K.K., Michałowski, M.J., Valiante, E., De Zotti, G., Furlanetto, C., Ivison, R., Maddox, S., Smith, M.W.L.

“…We perform SED fitting to measure the mean infrared luminosity due to star formation, removing the contamination from AGN emission. …”
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The star-formation history of the universe with the SKA by Jarvis, M., Seymour, Nick, Afonso, J., Best, P., Beswick, R., Heywood, I., Huynh, M., Murphy, E., Prandoni, I., Schinnerer, E., Simpson, C., Vaccari, M., White, Sarah

“…Radio wavelengths offer the unique possibility of tracing the total star-formation rate in galaxies, both obscured and unobscured. …”
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Major mergers are not significant drivers of star formation or morphological transformation around the epoch of peak cosmic star formation by Lofthouse, E.K., Kaviraj, S., Conselice, Christopher J., Mortlock, A., Hartley, W.

“…We also use the rest-frame U-band luminosity as a proxy for star formation to show that only a small fraction of the star formation budget (~3 per cent) is triggered by major mergers. …”
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The influence of environment on the star formation properties of galaxies by Rodríguez Del Pino, Bruno

“…From the analysis of the integrated star formation properties of the galaxies in the multi-cluster system we observe a significant number of galaxies with suppressed star formation with respect to the field. …”
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Structure, star formation history and environment of galaxies by Kelkar, K.

“…This thesis probes the role of environment in galaxy evolution, focussing particularly on understanding the links between the truncation of star formation, the transformation of galaxy structure, and environment. …”
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Star formation and quenching in galaxy formation models by Asquith, Rachel

“…This means that the star formation is more efficient in these haloes in the models than the real Universe. …”
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Molecular clouds and star formation in the Milky Way by Yan, Qingzeng

“…The properties of molecular clouds show remarkable variations among these three regions, which explains why the star formation activities are so different.…”
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The relationship between galaxy environment and the quenching of star formation by Socolovsky, Miguel

“…In this thesis, we explore the impact of environment on the star formation properties of galaxies across 6.5 Gyrs of cosmic time, corresponding to the redshift range 0.5<z<3.0. …”
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Multi-generation massive star-formation in NGC 3576 by Purcell, C., Minier, V., Longmore, S., André, P., Walsh, Andrew, Jones, P., Herpin, F., Hill, T., Cunningham, M., Burton, M.

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The suppression of star formation by powerful active galactic nuclei by Page, M., Symeonidis, M., Vieira, J., Altieri, B., Amblard, A., Arumugam, V., Aussel, H., Babbedge, T., Blain, A., Bock, J., Boselli, A., Buat, V., Castro-Rodríguez, N., Cava, A., Chanial, P., Clements, D., Conley, A., Conversi, L., Cooray, A., Dowell, C., Dubois, E., Dunlop, J., Dwek, E., Dye, S., Eales, S., Elbaz, D., Farrah, D., Fox, M., Franceschini, A., Gear, W., Glenn, J., Griffin, M., Halpern, M., Hatziminaoglou, E., Ibar, E., Isaak, K., Ivison, R., Lagache, G., Levenson, L., Lu, N., Madden, S., Maffei, B., Mainetti, G., Marchetti, L., Nguyen, H., O'Halloran, B., Oliver, S., Omont, A., Panuzzo, P., Papageorgiou, A., Pearson, C., Pérez-Fournon, I., Pohlen, M., Rawlings, J., Rigopoulou, D., Riguccini, L., Rizzo, D., Rodighiero, G., Roseboom, I., Rowan-Robinson, M., Sánchez Portal, M., Schulz, B., Scott, D., Seymour, Nick, Shupe, D., Smith, A., Stevens, J., Trichas, M., Tugwell, K., Vaccari, M., Valtchanov, I., Viero, M., Vigroux, L., Wang, L., Ward, R., Wright, G., Xu, C., Zemcov, M.

“…Here we report submillimetre and X-ray observations that show that rapid star formation was common in the host galaxies of AGN when the Universe was 2-6 billion years old, but that the most vigorous star formation is not observed around black holes above an X-ray luminosity of 10 44 ergs per second. …”
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Chandra Observations of Circumnuclear Star Formation in NGC 3351 by Swartz, D., Yukita, M., Tennant, A., Soria, Roberto, Ghosh, K.

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Star formation and the evolution of massive galaxies across cosmic time by Ownsworth, Jamie Richard

“…This thesis investigates the evolution of massive galaxies throughout the last 11 billion years using measured stellar masses and star formation rates. Firstly, we present a study of the resolved star-forming properties of a sample of distant massive (M > 10{11} M) galaxies in the GOODS NICMOS Survey (GNS) within the redshift range 1.5 < z < 3 in order to measure the spatial location of ongoing star formation (SF). …”
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Linking the structural properties of galaxies and their star formation histories with STAGES by Hoyos, Carlos, Aragón-Salamanca, Alfonso, Gray, Meghan E., Wolf, Christian, Maltby, David T., Bell, Eric F., Böhm, Asmus, Jogee, Shardha

“…We study the links between star formation history and structure for a large mass-selected galaxy sample at 0.05 ≤ zphot ≤ 0.30. …”
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Galaxy Zoo: star formation versus spiral arm number by Hart, Ross E., Bamford, Steven P., Casteels, Kevin R.V., Kruk, Sandor J., Lintott, Chris J., Masters, Karen L.

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The star formation history of the Universe as revealed by deep radio observations by Seymour, Nick, Dwelly, T., Moss, D., McHardy, I., Zoghbi, A., Rieke, G., Page, M., Hopkins, A., Loaring, N.

“…Using radio luminosity as an unobscured star formation rate (SFR) measure we are then able to examine the comoving SFR density of the Universe up to z = 3 which agrees well with measures at other wavelengths. …”
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Evolution of cosmic star formation in the SCUBA-2 Cosmology Legacy Survey by Bourne, N., Dunlop, J.S., Merlin, E., Parsa, S., Schreiber, C., Castellano, M., Conselice, Christopher J., Coppin, K.E.K., Farrah, D., Fontana, A., Geach, J.E., Halpern, M., Knudsen, K.K., Michałowski, M.J., Mortlock, A., Santini, P., Scott, D., Shu, X.W., Simpson, C., Simpson, J.M., Smith, D.J.B., van der Werf, P.P.

“…We present a new exploration of the cosmic star formation history and dust obscuration in massive galaxies at redshifts 0.5 < z < 6. …”
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Calibration of Ultraviolet, Mid-infrared, and Radio Star Formation Rate Indicators by Brown, M., Moustakas, J., Kennicutt, R., Bonne, N., Intema, Hubertus, De Gasperin, F., Boquien, M., Jarrett, T., Cluver, M., Smith, J., Da Cunha, E., Imanishi, M., Armus, L., Brandl, B., Peek, J.

“…We present calibrations for star formation rate (SFR) indicators in the ultraviolet, mid-infrared, and radiocontinuumbands, including one of the first direct calibrations of 150 MHz as an SFR indicator. …”
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Turbulence Sets the Initial Conditions for Star Formation in High-Pressure Environments by Rathborne, J., Longmore, S., Jackson, J., Kruijssen, J., Alves, J., Bally, J., Bastian, N., Contreras, Y., Foster, J., Garay, G., Testi, L., Walsh, Andrew

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The origin of S0s in clusters: evidence from the bulge and disc star formation histories by Johnston, Evelyn J., Aragón-Salamanca, Alfonso, Merrifield, Michael R.

“…The individual star formation histories of bulges and discs of lenticular (S0) galaxies can provide information on the processes involved in the quenching of their star formation and subsequent transformation from spirals. …”
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