Galaxy Assembly through Mergers
... another challenge, even though, given their massive nature, they may be responsible for the high mass end of the mass function. Understanding the latter in the local universe, dubbed dry mergers, constitutes the basis of this work. With the availability of large dedicated surveys such as the Sloan D ...
... another challenge, even though, given their massive nature, they may be responsible for the high mass end of the mass function. Understanding the latter in the local universe, dubbed dry mergers, constitutes the basis of this work. With the availability of large dedicated surveys such as the Sloan D ...
The correlation between galaxy morphology and star
... than local ones with similar mass (Cassata et al. 2011, 2013). Recent works have suggested, however, that a large fraction of, and possibly even all, massive, quiscent galaxies at z ∼ 2 are disk dominated (van der Wel et al. 2011). While the observation of such disks at z > 2 is based on morphologic ...
... than local ones with similar mass (Cassata et al. 2011, 2013). Recent works have suggested, however, that a large fraction of, and possibly even all, massive, quiscent galaxies at z ∼ 2 are disk dominated (van der Wel et al. 2011). While the observation of such disks at z > 2 is based on morphologic ...
STARLAB
... Charioteer, Lepus the Hare, Draco, and the Pleiades. Look at these constellations using the Constellation Cylinder. Hand out arrow pointers and show their locations. Look at the Starfield Cylinder and try to locate the same constellations. After leaving STARLAB, hand out star maps, and show the prop ...
... Charioteer, Lepus the Hare, Draco, and the Pleiades. Look at these constellations using the Constellation Cylinder. Hand out arrow pointers and show their locations. Look at the Starfield Cylinder and try to locate the same constellations. After leaving STARLAB, hand out star maps, and show the prop ...
Niraj D. Welikala Thesis - D-Scholarship@Pitt
... and on these scales the density fluctuations are small in size (rms fluctuations of the order ∼ 0.1 at 1 Gpc). However, on scales of the order of 10 Mpc, the density fluctuations are large (∼ 1). The most apparent overdensities are therefore on small scales, less than 10 Mpc which are the typical sc ...
... and on these scales the density fluctuations are small in size (rms fluctuations of the order ∼ 0.1 at 1 Gpc). However, on scales of the order of 10 Mpc, the density fluctuations are large (∼ 1). The most apparent overdensities are therefore on small scales, less than 10 Mpc which are the typical sc ...
CoRoT III programme
... yet and their evolution is the driver of the chemical evolution of the galaxy. Since CoRoT can, contrary to Kepler, observe two very different regions of the Galaxy, it will test whether the planetary system characteristics and star-to-planet ratio are the same in these two regions. In its seismolog ...
... yet and their evolution is the driver of the chemical evolution of the galaxy. Since CoRoT can, contrary to Kepler, observe two very different regions of the Galaxy, it will test whether the planetary system characteristics and star-to-planet ratio are the same in these two regions. In its seismolog ...
Unfolding the Milky Way bulge - International Max Planck Research
... Extinction map of the Galactic Bulge for the complete region covered by the VVV survey. The AKs values are computed from E(J − K s ) measurements assuming Cardelli et al. (1989) extinction law for all tiles. At AKs values larger than 1.5 mag the color scale saturates. The details of the extinction v ...
... Extinction map of the Galactic Bulge for the complete region covered by the VVV survey. The AKs values are computed from E(J − K s ) measurements assuming Cardelli et al. (1989) extinction law for all tiles. At AKs values larger than 1.5 mag the color scale saturates. The details of the extinction v ...
environmental effects on galaxy evolution in nearby clusters
... is studied. The main goals of this thesis are: (a) The study of the dependence of the UV emission of galaxies from their morphological type, mass and the environment they inhabit, through the study of UV luminosity functions and color magnitude relations. (b) The study of UV dust extinction properti ...
... is studied. The main goals of this thesis are: (a) The study of the dependence of the UV emission of galaxies from their morphological type, mass and the environment they inhabit, through the study of UV luminosity functions and color magnitude relations. (b) The study of UV dust extinction properti ...
- ISP 205, sec 1 - Visions of the
... 1 pt Which of the following is not a general characteristic of the four jovian planets in our solar system? 27. A They lack solid surfaces. B They are much more massive then any of the terrestrial planets. C They are higher in average density than are the terrestrial planets. D They are composed of ...
... 1 pt Which of the following is not a general characteristic of the four jovian planets in our solar system? 27. A They lack solid surfaces. B They are much more massive then any of the terrestrial planets. C They are higher in average density than are the terrestrial planets. D They are composed of ...
8th Grade Science Midterm Exam Review ____ 1. Look at the figure
... pesticide use after World War II D. Barbara McClintock, whose work on the ability of genes to change places on a chromosome earned her the Nobel Prize ____ 43. Scientific research has led to discoveries that have changed the world. Which area of scientific research can directly affect how the world ...
... pesticide use after World War II D. Barbara McClintock, whose work on the ability of genes to change places on a chromosome earned her the Nobel Prize ____ 43. Scientific research has led to discoveries that have changed the world. Which area of scientific research can directly affect how the world ...
... disk gas into outer rings, inner rings, and central mass concentrations. The resulting star formation produces a central stellar subsystem that has the high density and steep density gradient of a bulge but that was not formed by galaxy mergers. Secular evolution is not confined to barred and oval g ...
the mystery of the tunguska fireball
... seems to be burning his shirt. He said later that he had only a moment to note the size of the bright blue ‘tube’ that covered an enormous part of the sky. ‘Afterwards it became dark and at the same time I felt an explosion that threw me several feet from the porch and for a moment I lost consciousn ...
... seems to be burning his shirt. He said later that he had only a moment to note the size of the bright blue ‘tube’ that covered an enormous part of the sky. ‘Afterwards it became dark and at the same time I felt an explosion that threw me several feet from the porch and for a moment I lost consciousn ...
File practice exam
... c. through magnetic testing. d. by analyzing the spectra of the light that stars emit. ____ 91. A small, hot, extremely dense core left after a star collapses is a a. red giant. c. black dwarf. b. pulsar. d. white dwarf. ____ 92. During the main sequence stage, how is energy generated in a star’s co ...
... c. through magnetic testing. d. by analyzing the spectra of the light that stars emit. ____ 91. A small, hot, extremely dense core left after a star collapses is a a. red giant. c. black dwarf. b. pulsar. d. white dwarf. ____ 92. During the main sequence stage, how is energy generated in a star’s co ...
Hubble 2006: Science Year in Review
... Cold War, being in many respects a copy of a KH-11 reconnaissance satellite. Hubble is just one of roughly a dozen large telescopes of similar design that have been lofted into orbit—but Hubble was designed to look up, not down. The heart of Hubble is its 2.4-m mirror. While small by the standards o ...
... Cold War, being in many respects a copy of a KH-11 reconnaissance satellite. Hubble is just one of roughly a dozen large telescopes of similar design that have been lofted into orbit—but Hubble was designed to look up, not down. The heart of Hubble is its 2.4-m mirror. While small by the standards o ...
Galaxies
... depth later in this chapter. Passively evolving galaxies. Early-type galaxies, with little or no star formation, represent roughly one-half of the present day stellar mass density (Bell et al. 2003). These galaxies formed their stars earlier and more rapidly than late-type galaxies. They are more st ...
... depth later in this chapter. Passively evolving galaxies. Early-type galaxies, with little or no star formation, represent roughly one-half of the present day stellar mass density (Bell et al. 2003). These galaxies formed their stars earlier and more rapidly than late-type galaxies. They are more st ...
W.M. Keck Observatory Annual Report 2009
... Andrew Howard and Geoff Marcy, both of the University of California, Berkeley, and colleagues identified an exoplanet with a mass just four times that of Earth orbiting its parent star HD 156668. It is the second-smallest exoplanet that has been found to date. These super-Earth discoveries, combined ...
... Andrew Howard and Geoff Marcy, both of the University of California, Berkeley, and colleagues identified an exoplanet with a mass just four times that of Earth orbiting its parent star HD 156668. It is the second-smallest exoplanet that has been found to date. These super-Earth discoveries, combined ...
Mapping the Pathways of Galaxy Transformation Across Time and
... quiescence. Many show signs of a recent galaxy-galaxy merger and a newly-evolved stellar bulge, and most have LINER-like emission, which may indicate low luminosity AGN activity. Thus, the study of this short-lived phase of galaxy evolution can address the connections among mergers, star formation h ...
... quiescence. Many show signs of a recent galaxy-galaxy merger and a newly-evolved stellar bulge, and most have LINER-like emission, which may indicate low luminosity AGN activity. Thus, the study of this short-lived phase of galaxy evolution can address the connections among mergers, star formation h ...
The most metal-poor galaxies
... of a galaxy requires some words of caution because in a given galaxy, depending on where one looks, this quantity may vary substantially. For example in our Galaxy, the bulge, the solar neighbourhood and the halo differ in metallicity. The most metal-poor halo stars have heavy element abundances 10 ...
... of a galaxy requires some words of caution because in a given galaxy, depending on where one looks, this quantity may vary substantially. For example in our Galaxy, the bulge, the solar neighbourhood and the halo differ in metallicity. The most metal-poor halo stars have heavy element abundances 10 ...
Galaxies - hwchemistry
... of galaxies, however, they find that the measured masses are much larger than expected from the luminosities of the galaxies. • This seems to be true of most galaxies. – Measured masses of galaxies amount to 10 to 100 times more mass than you would expect from the appearance of galaxies. ...
... of galaxies, however, they find that the measured masses are much larger than expected from the luminosities of the galaxies. • This seems to be true of most galaxies. – Measured masses of galaxies amount to 10 to 100 times more mass than you would expect from the appearance of galaxies. ...
DUSTiNGS III: Distribution of Intermediate
... Tolstoy et al. 1998; McQuinn et al. 2012). As a result, the spatial distributions of these different stellar populations could be studied with greater precision, showing the degree of central concentration decreases with the mean age of the populations of high mass MS stars, blue and red HeB stars, ...
... Tolstoy et al. 1998; McQuinn et al. 2012). As a result, the spatial distributions of these different stellar populations could be studied with greater precision, showing the degree of central concentration decreases with the mean age of the populations of high mass MS stars, blue and red HeB stars, ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.