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Interstellar masers are unique probes of the environments in which they arise. In studies of high-mass star formation their primary function has been as signposts of these regions and they have been used as probes of the kinematics and…

天体物理学 · 物理学 2009-11-13 S. P. Ellingsen , M. A. Voronkov , D. M. Cragg , A. M. Sobolev , S. L. Breen , P. D. Godfrey

The Atacama Large Millimeter Array (ALMA), a world-wide project (64x12m-dishes operating from 84 to 720 GHz, to be completed by 2011) will represent a jump of almost two orders of magnitude in sensitivity and angular resolution as compared…

天体物理学 · 物理学 2007-05-23 Alain Omont

Maser emission plays an important role as a tool in star formation studies. It is widely used for deriving kinematics, as well as the physical conditions of different structures, hidden in the dense environment very close to the young…

星系天体物理 · 物理学 2015-06-04 Anna Bartkiewicz , Huib Jan van Langevelde

An international group of scientists has begun planning for the Planet Formation Imager (PFI, www.planetformationimager.org), a next-generation infrared interferometer array with the primary goal of imaging the active phases of planet…

天体物理仪器与方法 · 物理学 2019-07-26 John D. Monnier , 48 endorsers

Extreme star formation includes star formation in starbursts and regions forming super star clusters. We survey the current problems in our understanding of the star formation process in starbursts and super star clusters - initial mass…

星系天体物理 · 物理学 2010-09-09 Jean L. Turner

This review examines the state-of-the-art knowledge of high-mass star and massive cluster formation, gained from ambitious observational surveys, which acknowledge the multi-scale characteristics of these processes. After a brief overview…

星系天体物理 · 物理学 2018-03-19 Frederique Motte , Sylvain Bontemps , Fabien Louvet

A cosmologically significant population of very luminous high-redshift galaxies has recently been discovered at submm wavelengths. Advances in submm detector technologies have opened this new window on the distant Universe. Here we discuss…

天体物理学 · 物理学 2009-11-07 Andrew W. Blain , Ian Smail , R. J. Ivison , J. -P. Kneib , David T. Frayer

Star formation is a multi-scale, multi-physics problem ranging from the size scale of molecular clouds ($\sim$10s pc) down to the size scales of dense prestellar cores ($\sim$0.1 pc) that are the birth sites of stars. Several physical…

太阳与恒星天体物理 · 物理学 2020-05-27 Anna L. Rosen , Stella S. R. Offner , Sarah I. Sadavoy , Asmita Bhandare , Enrique Vázquez-Semadeni , Adam Ginsburg

What else can be said about star formation rate indicators that has not been said already many times over? The `coming of age' of large ground-based surveys and the unprecedented sensitivity, angular resolution and/or field-of-view of…

宇宙学与河外天体物理 · 物理学 2012-08-16 Daniela Calzetti

Observations at long wavelengths, in the wide interval from a few to 1000 micron, are essential to study diffuse media in galaxies, including all kinds of atomic, ionic and molecular gases and dust grains. Hence they are particularly suited…

天体物理学 · 物理学 2007-05-23 Alberto Franceschini

Mass and radius measurements of stars are important inputs for models of stellar structure. Binary stars are of particular interest in this regard, because astrometry and spectroscopy of a binary together provide the masses of both stars as…

天体物理仪器与方法 · 物理学 2021-09-22 Km Nitu Rai , Soumen Basak , Prasenjit Saha

Massive stars have a profound influence on the Universe, but their formation remains poorly understood. We review the current status of observational and theoretical research in this field, describing the various stages of an evolutionary…

天体物理学 · 物理学 2007-05-23 H. Beuther , E. B. Churchwell , C. F. McKee , J. C. Tan

Improving our understanding of the initial conditions and earliest stages of protostellar collapse is crucial to gain insight into the origin of stellar masses, multiple systems, and protoplanetary disks. Observationally, there are two…

天体物理学 · 物理学 2009-11-07 Philippe Andre , Jeroen Bouwman , Arnaud Belloche , Patrick Hennebelle

We review current understanding of star formation, outlining an overall theoretical framework and the observations that motivate it. A conception of star formation has emerged in which turbulence plays a dual role, both creating…

天体物理学 · 物理学 2008-11-26 Christopher F. McKee , Eve C. Ostriker

The infrared represents an alternative wavelength regime in which to study the environments of maser emission, while at the same time complementing the information obtained through radio techniques. The near infrared (1-2 microns) yields…

天体物理学 · 物理学 2007-05-23 J. M. De Buizer

It's safe to say that UKIRT's contribution to star formation at near-infrared, mid-infrared, and even sub-millimetre wavelengths has been considerable. From the early days of single-detector photometers, through the development of 2-D…

星系天体物理 · 物理学 2009-11-16 Christopher J. Davis

While ALMA and JWST are revolutionizing our view of star and planet formation with their unprecedented sensitivity and resolution at submillimeter and near-IR wavelengths, many outstanding questions can only be answered with observations in…

天体物理仪器与方法 · 物理学 2023-03-15 Floris van der Tak

MATISSE represents a great opportunity to image the environment around massive and evolved stars. This will allow one to put constraints on the circumstellar structure, on the mass ejection of dust and its reorganization , and on the…

A major goal of modern astrophysics is to understand the processes by which the universe evolved from its initial simplicity, as seen in measurements of the Cosmic Microwave Background, to the universe we see today, with complexity on all…