PDF - STRW Local - Universiteit Leiden
... While the haloes of dark matter that are thought to host galaxies can be simulated accurately almost from first principles, this is not the case for the galaxies themselves, which consist mostly of baryonic (i.e. ordinary) matter. The difficulties stem from three problems. First, not only gravity, b ...
... While the haloes of dark matter that are thought to host galaxies can be simulated accurately almost from first principles, this is not the case for the galaxies themselves, which consist mostly of baryonic (i.e. ordinary) matter. The difficulties stem from three problems. First, not only gravity, b ...
LIGO I - Indico
... Quasar image appears around the central glow formed by nearby galaxy. Such gravitational lensing images are used to detect a ‘dark matter’ body as the central object ...
... Quasar image appears around the central glow formed by nearby galaxy. Such gravitational lensing images are used to detect a ‘dark matter’ body as the central object ...
Science with the Constellation
... between the origin of structure shortly after the Big Bang and the structure we see today. The Hubble Space Telescope (HST) and the Keck Observatory found very young galaxies at a redshift of 5. The Compton Gamma Ray Observatory (CGRO) discovered gamma-ray blazars. BeppoSAX, CGRO, and the Keck revea ...
... between the origin of structure shortly after the Big Bang and the structure we see today. The Hubble Space Telescope (HST) and the Keck Observatory found very young galaxies at a redshift of 5. The Compton Gamma Ray Observatory (CGRO) discovered gamma-ray blazars. BeppoSAX, CGRO, and the Keck revea ...
Chapter 5 The Evolutionary Paths Of Nearby Galaxies
... increasing the stellar mass retained in quiescent systems. In this case, a quenching of the star formation is required to drive galaxies towards the red sequence, but it is still unclear what physical mechanism(s) may be responsible for such migration. The most popular candidate is feedback from the ...
... increasing the stellar mass retained in quiescent systems. In this case, a quenching of the star formation is required to drive galaxies towards the red sequence, but it is still unclear what physical mechanism(s) may be responsible for such migration. The most popular candidate is feedback from the ...
ESA BR-170 - ESA Science
... 1650 Bishop Ussher had famously calculated the date of creation as 4004 BC. The first to recognise the true age of the Earth was a Scottish physician called James Hutton, an amateur geologist, who, in 1790, realised from his study of rock formations that the Earth had to be much older. It was so man ...
... 1650 Bishop Ussher had famously calculated the date of creation as 4004 BC. The first to recognise the true age of the Earth was a Scottish physician called James Hutton, an amateur geologist, who, in 1790, realised from his study of rock formations that the Earth had to be much older. It was so man ...
Missions
... expected to be an adjunct to optical astronomy. “Stars, after all, were known to be visible objects; and the Universe appeared to be an aggregate of stars”, writes US infrared pioneer Martin Harwit in the book “A Century of Space Science”. The first infrared survey of the sky, performed by Gerry Neu ...
... expected to be an adjunct to optical astronomy. “Stars, after all, were known to be visible objects; and the Universe appeared to be an aggregate of stars”, writes US infrared pioneer Martin Harwit in the book “A Century of Space Science”. The first infrared survey of the sky, performed by Gerry Neu ...
The redshift of extragalactic nebulae
... extragalactic nebula, as well as the methods that have been used for research into them. In particular, the so-called redshift of extragalactic nebulae is discussed in detail. Various theories that have been advanced to explain this important phenomenon are briefly discussed. Finally it is indicated ...
... extragalactic nebula, as well as the methods that have been used for research into them. In particular, the so-called redshift of extragalactic nebulae is discussed in detail. Various theories that have been advanced to explain this important phenomenon are briefly discussed. Finally it is indicated ...
Article PDF - IOPscience
... Currently available evidence suggests that star formation continued much longer in many dwarf spheroidals than it did in the main body of the Galactic halo. It is suggested that ““ young ÏÏ globular clusters, such as Ruprecht 106, might have formed in now defunct dwarf spheroidals. Assuming SagDIG, ...
... Currently available evidence suggests that star formation continued much longer in many dwarf spheroidals than it did in the main body of the Galactic halo. It is suggested that ““ young ÏÏ globular clusters, such as Ruprecht 106, might have formed in now defunct dwarf spheroidals. Assuming SagDIG, ...
Seeding the Universe with Life
... Nature creates objects and patterns but does not call them names. Only humans use definitions. Therefore, “what is Life” cannot be answered by Nature. It must be answered by human beings using human faculties: our instincts, emotions and rational arguments. Whomever we accept as living beings – they ...
... Nature creates objects and patterns but does not call them names. Only humans use definitions. Therefore, “what is Life” cannot be answered by Nature. It must be answered by human beings using human faculties: our instincts, emotions and rational arguments. Whomever we accept as living beings – they ...
Teil 2
... orbital motion, i.e., they appear centred at the central meridian during the respective quadrature phases, thus are not facing each other as would be the case for a hypothetical reflection effect. The leading hemispheres on both components appear with an effectively lower temperature than the traili ...
... orbital motion, i.e., they appear centred at the central meridian during the respective quadrature phases, thus are not facing each other as would be the case for a hypothetical reflection effect. The leading hemispheres on both components appear with an effectively lower temperature than the traili ...
The Collision Between The Milky Way And Andromeda
... 16% (Spergel et al. 2003). Since the Milky Way and Andromeda galaxy models only include baryons in the galactic disk and bulge components, they are far short of this value. We therefore set the Local Group medium to be 20% primordial gas, by mass, so that the entire region approaches the cosmic mean ...
... 16% (Spergel et al. 2003). Since the Milky Way and Andromeda galaxy models only include baryons in the galactic disk and bulge components, they are far short of this value. We therefore set the Local Group medium to be 20% primordial gas, by mass, so that the entire region approaches the cosmic mean ...
Preliminary Talk Abstract Book - MoCA
... Clusters of galaxies are the most massive virialised cosmic structures. The diversity of their environmental conditions, from the dense cores to the sparse outskirts, allows them to be used as observational laboratories for the study of the environmental drivers of galaxy evolution. Furthermore, the ...
... Clusters of galaxies are the most massive virialised cosmic structures. The diversity of their environmental conditions, from the dense cores to the sparse outskirts, allows them to be used as observational laboratories for the study of the environmental drivers of galaxy evolution. Furthermore, the ...
Chapter 20 Notes
... mass of 1.4 to 3 solar masses, the remnant can become a neutron star. • If the leftover core has a mass that is greater than three solar masses, it will collapse to form a black hole. • Black hole an object so massive and dense that not even light can escape its gravity Chapter menu ...
... mass of 1.4 to 3 solar masses, the remnant can become a neutron star. • If the leftover core has a mass that is greater than three solar masses, it will collapse to form a black hole. • Black hole an object so massive and dense that not even light can escape its gravity Chapter menu ...
FLARE SWG theme 3: high
... Quasars/AGNs appear to become rarer wrt galaxies at z>5 but need direct measurements FLARE+Athena (also E-ELT) can directly measure out to (potentially) z~10 ...
... Quasars/AGNs appear to become rarer wrt galaxies at z>5 but need direct measurements FLARE+Athena (also E-ELT) can directly measure out to (potentially) z~10 ...
Jul y 9- 11,
... University of Washington We present results from a deep XMM-Newton survey of M33 consisting of 8 pointings extending beyond the D25 isophote sensitive to L(0.2-4.5 keV) ¡ 4 1034 erg/s. The large area coupled with the XMM soft response complement the deep Chandra Survey of M33. Cross-correlation of ...
... University of Washington We present results from a deep XMM-Newton survey of M33 consisting of 8 pointings extending beyond the D25 isophote sensitive to L(0.2-4.5 keV) ¡ 4 1034 erg/s. The large area coupled with the XMM soft response complement the deep Chandra Survey of M33. Cross-correlation of ...
PDF only - at www.arxiv.org.
... We live in a highly dynamic Universe. Small density fluctuations after the Big Bang grew into larger gravitational potential wells. Within the wells dark matter decoupled from gaseous matter, the latter condensed and formed the first stars and galaxies. These first galax ...
... We live in a highly dynamic Universe. Small density fluctuations after the Big Bang grew into larger gravitational potential wells. Within the wells dark matter decoupled from gaseous matter, the latter condensed and formed the first stars and galaxies. These first galax ...
Science with IMACS on Magellan
... IMACS in this way to mine the fields of intermediate redshift clusters and their surrounding superclusters, acquiring field galaxies to even higher redshift in the process. Their goal is to chart the morphological and spectral evolution of galaxies as they transition from the low-density field, thro ...
... IMACS in this way to mine the fields of intermediate redshift clusters and their surrounding superclusters, acquiring field galaxies to even higher redshift in the process. Their goal is to chart the morphological and spectral evolution of galaxies as they transition from the low-density field, thro ...
Lecture Outline and Specific Objectives
... This outline summarises lecture-by-lecture the main concepts which we hope will be conveyed in Astronomy and which will be regarded as examinable. The order is as currently expected, but may change slightly, or may slip slightly, as lecturers present the material and availability of guest lecturers ...
... This outline summarises lecture-by-lecture the main concepts which we hope will be conveyed in Astronomy and which will be regarded as examinable. The order is as currently expected, but may change slightly, or may slip slightly, as lecturers present the material and availability of guest lecturers ...
Stellar Populations of Dwarf Elliptical Galaxies: UBVRI Photometry
... little-to-no angular momentum? Were they formed through the collision of even lower mass galaxies and thus ended up with no net angular momentum? Did they transfer their angular momentum as they moved through the dense cluster? In support of the latter process, Mayer et al. (2001a,b) have shown that ...
... little-to-no angular momentum? Were they formed through the collision of even lower mass galaxies and thus ended up with no net angular momentum? Did they transfer their angular momentum as they moved through the dense cluster? In support of the latter process, Mayer et al. (2001a,b) have shown that ...
A GMOS dissection of the line-of
... Statistical properties of high-z radio quasars may be more useful in determining importance of lensing ...
... Statistical properties of high-z radio quasars may be more useful in determining importance of lensing ...
2 Justification and benefits in joining TMT
... questions with the next generation extremely large class telescopes such as the Thirty Meter Telescope (TMT). The Chinese participation in the TMT will place China in the forefront of astronomy for many decades to come; it can be a transformational experience for Chinese astronomy in terms of scienc ...
... questions with the next generation extremely large class telescopes such as the Thirty Meter Telescope (TMT). The Chinese participation in the TMT will place China in the forefront of astronomy for many decades to come; it can be a transformational experience for Chinese astronomy in terms of scienc ...
R585 EXPLORERS OF THE SOUTHERN SKY
... “Easy PC Astronomy” is the book for all those who want to make astronomical calculations easily and accurately. A simple but powerful script language called AstroScript is provided on a disk with the book, ready to use on any IBM PC-type computer. Equipped with this the user can make complex calcula ...
... “Easy PC Astronomy” is the book for all those who want to make astronomical calculations easily and accurately. A simple but powerful script language called AstroScript is provided on a disk with the book, ready to use on any IBM PC-type computer. Equipped with this the user can make complex calcula ...
Evolution of the atomic and molecular gas content of galaxies
... the Interstellar Medium (ISM) by the stellar UV background plays a key role in regulating star formation. In their model, the thermal pressure in the diffuse ISM, which is proportional to the UV heating rate, adjusts until it balances the midplane pressure set by the vertical gravitational potential ...
... the Interstellar Medium (ISM) by the stellar UV background plays a key role in regulating star formation. In their model, the thermal pressure in the diffuse ISM, which is proportional to the UV heating rate, adjusts until it balances the midplane pressure set by the vertical gravitational potential ...
X. Nuclear star clusters in low-mass early-type galaxies
... There are several formation scenarios for NSCs, which can essentially be divided into two main scenarios: build-up through the accretion of (globular) star clusters, or by star formation in situ. The GC accretion scenario was first developed by Tremaine, Ostriker & Spitzer (1975). In this scenario, ...
... There are several formation scenarios for NSCs, which can essentially be divided into two main scenarios: build-up through the accretion of (globular) star clusters, or by star formation in situ. The GC accretion scenario was first developed by Tremaine, Ostriker & Spitzer (1975). In this scenario, ...
Evolution of the atomic and molecular gas content of galaxies
... sub-grid processes of star formation and stellar feedback, rather than inaccuracies of the semi-analytic approach, that are the root cause of the problems. Several groups have now used semi-analytic models to make predictions for the multi-phase gas content of galaxies. Obreschkow et al. (2009a) app ...
... sub-grid processes of star formation and stellar feedback, rather than inaccuracies of the semi-analytic approach, that are the root cause of the problems. Several groups have now used semi-analytic models to make predictions for the multi-phase gas content of galaxies. Obreschkow et al. (2009a) app ...