The Initial Mass Function 50 Years Later

Autore: Edvige Corbelli
Editore: Springer Science & Business Media
ISBN: 1402034075
Grandezza: 77,82 MB
Formato: PDF, ePub, Docs
Vista: 4604
Download

Theideatocelebrate50yearsoftheSalpeterIMFoccurredduringtherecent IAU General Assembly in Sydney, Australia. Indeed, it was from Australia that in July 1954 Ed Salpeter submitted his famous paper "The Luminosity Function and Stellar Evolution" with the rst derivation of the empirical stellar IMF. This contribution was to become one of the most famous astrophysics papers of the last 50 years. Here, Ed Salpeter introduced the terms "original mass function" and "original luminosity function", and estimated the pro- bility for the creation of stars of given mass at a particular time, now known as the "Salpeter Initial Mass Function", or IMF. The paper was written at the Australian National University in Canberra on leave of absence from Cornell University (USA) and was published in 1955 as 7 page note in the Astroph- ical Journal Vol. 121, page 161. To celabrate the 50th anniversary of the IMF, along with Ed Salpeter’s 80th birthday, we have organized a special meeting that brought together scientists involved in the empirical determination of this fundamental quantity in a va- ety of astrophysical contexts and other scientists fascinated by the deep imp- cations of the IMF on star formation theories, on the physical conditions of the gas before and after star formation, and on galactic evolution and cosmology. The meeting took place in one of the most beautiful spots of the Tuscan countryside, far from the noise and haste of everyday life.

Introduction To Galaxy Formation And Evolution

Autore: Andrea Cimatti
Editore: Cambridge University Press
ISBN: 1108764223
Grandezza: 74,38 MB
Formato: PDF
Vista: 4381
Download

Present-day elliptical, spiral and irregular galaxies are large systems made of stars, gas and dark matter. Their properties result from a variety of physical processes that have occurred during the nearly fourteen billion years since the Big Bang. This comprehensive textbook, which bridges the gap between introductory and specialized texts, explains the key physical processes of galaxy formation, from the cosmological recombination of primordial gas to the evolution of the different galaxies that we observe in the Universe today. In a logical sequence, the book introduces cosmology, illustrates the properties of galaxies in the present-day Universe, then explains the physical processes behind galaxy formation in the cosmological context, taking into account the most recent developments in this field. The text ends on how to find distant galaxies with multi-wavelength observations, and how to extract the physical and evolutionary properties based on imaging and spectroscopic data.

Jets From Young Stars Ii

Autore: Francesca Bacciotti
Editore: Springer
ISBN: 3540680322
Grandezza: 69,31 MB
Formato: PDF, ePub
Vista: 7227
Download

This volume offers a background in modern high spatial resolution techniques, illustrating how such methods have impacted on our understanding of young stars. It provides hands-on insight into observing from space as well as the ground, the use of interferometers at millimeter and infrared wavelengths, image analysis and spectral diagnostic techniques, and High Angular Resolution studies of the inner regions of circumstellar disks that play a fundamental role in jet launching.

Bibliographie Internationale Annuelle Des M Langes

Autore:
Editore:
ISBN:
Grandezza: 18,19 MB
Formato: PDF, ePub
Vista: 625
Download


Starbursts

Autore: Richard de Grijs
Editore: Springer Science & Business Media
ISBN: 140203539X
Grandezza: 29,71 MB
Formato: PDF, Kindle
Vista: 7676
Download

Starbursts are important features of early galaxy evolution. Many of the distant, high-redshift galaxies we are able to detect are in a starbursting phase, often apparently provoked by a violent gravitational interaction with another galaxy. In fact, if we did not know that major starbursts existed, these conference proceedings testify that we would indeed have difficulties explaining the key properties of the Universe! These conference proceedings cover starbursts from the small-scale star-forming regions in nearby galaxies to galaxy-wide events at high redshifts; one of the major themes of the conference proved to be "scalability", i.e., can we scale up the small-scale events to describe the physics on larger scales. The key outcome of this meeting – and these proceedings – is a resounding "yes" to this fundamental, yet profound question. The enhanced synergy facilitated by the collaboration among observers using cutting-edge ground and space-based facilities, theorists and modellers has made these proceedings a true reflection of the state of the art in this very rapidly evolving field.

Formation And Evolution Of Galaxy Disks

Autore: José G. Funes
Editore: Astronomical Society of the pacific
ISBN:
Grandezza: 78,12 MB
Formato: PDF, ePub, Docs
Vista: 6798
Download

"These are the proceedings of the international conference "Formation and Evolution of Galaxy Disks" organized by the Specola Vaticana (the Vatican Observatory). The meeting hosted 198 participants from 26 countries. The program consisted of 61 talks and about 130 poster papers. In 2000 the Vatican Observatory organized a conference on Galaxy Disks and Disk Galaxies, the proceedings of which were published in ASP Conference Series Vol. 230. Since that time, a great amount of work has been done in this very active field. October 2007 was deemed an appropriate time to hold another similar conference where outstanding senior and junior astronomers in this field could air new results. The conference was focused on the formation and evolution of galaxy disks and covered the following topics: (1) properties of nearby galaxy disks; (2) interstellar medium, star formation, and chemical evolution; (3) disk edges, outskirts, and environment; (4) accretion onto disks, interactions, and mergers; (5) secular evolution of disks and bar/spiral driven evolution of galaxies; (6) evolution of disk structural properties; and (7) disk formation in a hierarchical universe. This books is of interest for researchers in extragalactic astronomy. It presents an overview of the relevant results and the progress made in the field in the last seven years."--Publisher's website.

Advances In Far Infrared Astrophysics

Autore: Frank P. Helmich
Editore:
ISBN:
Grandezza: 46,19 MB
Formato: PDF, Kindle
Vista: 1984
Download


Memorie Della Societ Astronomica Italiana

Autore: Società astronomica italiana
Editore:
ISBN:
Grandezza: 58,86 MB
Formato: PDF, Mobi
Vista: 8558
Download


American Book Publishing Record

Autore:
Editore:
ISBN:
Grandezza: 64,77 MB
Formato: PDF, ePub
Vista: 6230
Download


The Astronomical Journal

Autore:
Editore:
ISBN:
Grandezza: 31,81 MB
Formato: PDF, Kindle
Vista: 4699
Download


Xii Iau Regional Latin American Meeting

Autore:
Editore:
ISBN: 9789703252985
Grandezza: 16,23 MB
Formato: PDF, Mobi
Vista: 1583
Download


Massive Star Formation

Autore: Henrik Beuther
Editore: Astronomical Society of the pacific
ISBN:
Grandezza: 33,90 MB
Formato: PDF, ePub, Mobi
Vista: 8554
Download


Who S Who In Italy

Autore:
Editore:
ISBN:
Grandezza: 43,67 MB
Formato: PDF, Docs
Vista: 8937
Download


The British National Bibliography

Autore: Arthur James Wells
Editore:
ISBN:
Grandezza: 65,64 MB
Formato: PDF, ePub, Mobi
Vista: 4415
Download


A Search For Pulsation In Young Brown Dwarfs And Very Low Mass Stars

Autore: Ann Marie Cody
Editore: Universal-Publishers
ISBN: 1612334210
Grandezza: 23,99 MB
Formato: PDF, ePub, Docs
Vista: 9127
Download

In 2005, Palla & Baraffe proposed that brown dwarfs and very low mass stars (

Evolution Stellaire Avant La S Quence Principale

Autore: Société royale des sciences de Liège
Editore:
ISBN:
Grandezza: 79,67 MB
Formato: PDF, Docs
Vista: 305
Download


Evolution In Astrophysics

Autore: Erica Rolfe
Editore:
ISBN:
Grandezza: 78,66 MB
Formato: PDF, Kindle
Vista: 9004
Download


Starbursts Triggers Nature And Evolution

Autore: Bruno Guiderdoni
Editore: Springer Science & Business Media
ISBN: 9783540647010
Grandezza: 18,22 MB
Formato: PDF, ePub, Docs
Vista: 7978
Download

Starbursts are regions of unusually rapid star formation often located in the central parts of galaxies. Recent observational and theoretical developments have emphasized their importance to understand the connection between star formation, the interstellar medium, and the secular evolution of galaxies. In this book, leading experts in the field introduce the basic processes involved in the physics of starbursts, the phenomenological concepts which are used to describe and model their triggering and evolution, and their link to galaxy formation and history. A specific effort is made to start with pedagogical presentations and to review the state-of-the art of the observations and models, emphasizing the recent breakthroughs and the major issues to be explored in the future.

The Stellar Initial Mass Function

Autore: Gerry Gilmore
Editore:
ISBN:
Grandezza: 15,19 MB
Formato: PDF, ePub, Docs
Vista: 7779
Download


Mass Loss From Stars And The Evolution Of Stellar Clusters

Autore: Alex de Koter
Editore: Astronomical Society of the pacific
ISBN:
Grandezza: 51,51 MB
Formato: PDF, Docs
Vista: 6608
Download

"In the spring of 2006 a four day international workshop was held in Lunteren, The Netherlands, in honor of the formal retirement of Prof. Henny Lamers. These proceedings provide a comprehensive overview of mass loss in massive stars and of the dynamical fate of clusters. The dynamical evolution of clusters is affected by stellar winds, mass loss outbursts and supernova explosions as well as by the loss of stars in dynamical interactions, thus linking the two central themes of the workshop. It is becoming clear that mass loss by radiation pressure on spectral lines is not only at work in normal O, B, and A stars but also in Luminous Blue Variables and Wolf-Rayet stars. The importance of these line-driven winds relative to outbursts in the Luminous Blue Variable phase of evolution is under debate. A central issue in this discussion is the importance of small and possibly large scale structure in stellar winds and its implications for the measured mass loss rates. These proceedings report on progress establishing wind properties, on theoretical predictions of mass loss and wind structure as a function of stellar properties, and on the effects of mass loss on the evolution of massive stars. As a result of dynamical interactions, clusters may dissolve completely over time. Observational studies of cluster dissolution timescales as a function of cluster formation history and cluster and environmental properties, are at the focus of cluster studies in the last decade. A key topic discussed in this book is whether the old globular clusters we observe today were once similar to present-day massive young clusters. The mass function of the two types of clusters is observed to be different. Is this a result of dynamical evoltuion or were the mass functions different at formation? The 12 invited reviews, 18 contributed talks, 48 poster papers, and two discussion sessions combine to provide and in-depth assessment of both observational and theoretical issues. The book is suitable for researchers and graduate students interested in stellar astrophysics and cluster dynamics."--Provided by publisher.