Download A Statistical and Multi-wavelength Study of Star Formation by Corentin Schreiber PDF

By Corentin Schreiber

This thesis offers a pioneering process for gleaning the utmost info from the inner most photos of the far-infrared universe acquired with the Herschel satellite tv for pc, attaining galaxies fainter by way of an order of importance than in past experiences. utilizing those top of the range measurements, the writer first demonstrates that the majority of galaxy big name formation didn't ensue in merger-driven starbursts over ninety% of the historical past of the universe, which means that galaxy progress is in its place ruled by means of a gentle infall of topic. the writer extra demonstrates that vast galaxies undergo a gentle decline of their big name formation job, offering another course for galaxies to forestall celebrity formation. one of many key unsolved questions in astrophysics is how galaxies obtained their mass during cosmic time. within the ordinary idea, the merging of galaxies performs an immense function in forming new stars. Then, previous galaxies without notice cease forming stars via an unknown strategy. Investigating this idea calls for an independent degree of the megastar formation depth of galaxies, which has been unavailable a result of dirt obscuration of stellar light.

Show description

Read Online or Download A Statistical and Multi-wavelength Study of Star Formation in Galaxies PDF

Best nonfiction_13 books

The Later Philosophy of Wittgenstein

'David Pole, in his The Later Philosophy of Wittgenstein, makes an admirable try to make clear the relevant issues of Wittgenstein's philosophy in a simple demeanour. He ways it from the outdoors with sympathy and reliable experience. and because he combines a transparent head with a fluent kind of writing – a mixture that's infrequent one of the initiated – his e-book will turn out an exceptional creation should you want a succinct account of Wittgenstein's later philosophy with none mystical overtones.

The dialectics of liberation

A progressive compilation of speeches which produced a political basis for lots of of the unconventional hobbies within the following a long time The now mythical Dialectics of Liberation congress, held in London in 1967, was once a distinct expression of the politics of dissent. Existential psychiatrists, Marxist intellectuals, anarchists, and political leaders met to debate key social concerns.

Human Activity Recognition and Prediction

This booklet presents a special view of human task reputation, specially fine-grained human job constitution studying, human-interaction attractiveness, RGB-D info dependent motion acceptance, temporal decomposition, and causality studying in unconstrained human job movies. The thoughts mentioned supply readers instruments that supply an important development over latest methodologies of video content material realizing via making the most of job popularity.

Additional info for A Statistical and Multi-wavelength Study of Star Formation in Galaxies

Sample text

Glazebrook, J. S. H. Wechsler, C. Conroy, ApJ 770, 57 (2013) Y. Birnboim, A. D. C. R. M. R. J. Rees, Nature 311, 517 (1984) M. Boquien, V. Buat, A. J. D. A. N. M. Alexander, A&A Rev. 23, 1 (2015) A. Bressan, F. Fagotto, G. Bertelli, C. Chiosi, A&AS 100, 647 (1993) J. Brinchmann, S. M. , MNRAS 351, 1151 (2004) G. Bruzual, S. Charlot, MNRAS 344, 1000 (2003) V. Buat, J. Iglesias-Páramo, M. , ApJ 619, L51 (2005) D. Calzetti, L. C. L. Capak, C. Carilli, G. , Nature 522, 455 (2015) M. Castellano, V. Sommariva, A.

2014), applying their methodology to the distant Universe, where the slope of the Main Sequence is found to be different. The aim is to check if their result also holds at early epochs, and draw further conclusions on the link with quenching. 2 The Main Questions 25 In Chap. 5 I also approach the study of this varying slope from another angle, by measuring directly the gas content in these galaxies to see whether the decrease of the SFR is caused by a reduction of the gas fraction f gas , or a lowered star formation efficiency (SFE).

Hopkins, D. Kereš, J. , MNRAS 445, 581 (2014) O. Ilbert, S. Arnouts, E. S. B. Z. C. C. , ARA&A 36, 189 (1998) M. G. van Dokkum, I. , ApJ 700, 221 (2009) I. Labbé, G. Rudnick, M. B. D. Lehnert, W. van Driel, L. Le Tiran, P. Di Matteo, M. Haywood, A&A 577, A112 (2015) C. M. Heckman, ApJS 96, 9 (1995) R. Leiton, D. Elbaz, K. J. Lilly, O. Le Fevre, F. Hammer, D. O. M. Lotz, P. J. , ApJ 742, 103 (2011) D. Lynden-Bell, Nature 223, 690 (1969) P. C. E. E. Magdis, E. Daddi, M. , ApJ 760, 6 (2012) B. Magnelli, D.

Download PDF sample

Rated 4.87 of 5 – based on 21 votes