Report from the Subaru Telescope for External
... indicates that young galaxies in the distant Universe (at least some of them) emit more ionizing radiation than expected and that they may have played an important role in the cosmic reionization. This is consistent with Ouchi et al. (2009b), which estimated the total ionizing photon budget from the ...
... indicates that young galaxies in the distant Universe (at least some of them) emit more ionizing radiation than expected and that they may have played an important role in the cosmic reionization. This is consistent with Ouchi et al. (2009b), which estimated the total ionizing photon budget from the ...
The VIMOS Ultra-Deep Survey (VUDS): Fast Increase in the Fraction
... tons are easily scattered, shifted in frequency, and absorbed by the neutral hydrogen and/or by the dust. As a result, in general, Lyα emission is more attenuated than other UV photons, with the Lyα escape fraction (i.e., the fraction of the Lyα photons that escape the galaxies) that depends strongl ...
... tons are easily scattered, shifted in frequency, and absorbed by the neutral hydrogen and/or by the dust. As a result, in general, Lyα emission is more attenuated than other UV photons, with the Lyα escape fraction (i.e., the fraction of the Lyα photons that escape the galaxies) that depends strongl ...
THE OFFSET AND HOST LIGHT DISTRIBUTIONS OF LONG
... These results differ from the conclusion of Bloom et al. (2002) that LGRBs track an exponential light distribution. In addition to the tension between the results of previous studies, and the relatively small samples used in these studies, it is important to note other potential challenges. First, t ...
... These results differ from the conclusion of Bloom et al. (2002) that LGRBs track an exponential light distribution. In addition to the tension between the results of previous studies, and the relatively small samples used in these studies, it is important to note other potential challenges. First, t ...
The Milky Way`s external disc constrained by 2MASS star counts
... warp, we then tentatively adjust the star counts on both sides of the galaxy, to check the values of the northern and the southern warps independently. As such, it is not possible for us to create a stellar overdensity in the model by a misalignment of the stellar and dusty warps. Figure 3 (top pane ...
... warp, we then tentatively adjust the star counts on both sides of the galaxy, to check the values of the northern and the southern warps independently. As such, it is not possible for us to create a stellar overdensity in the model by a misalignment of the stellar and dusty warps. Figure 3 (top pane ...
Galaxies Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015
... http://www.astro.ufl.edu/~guzman/ast1002/class_notes/Ch15/gal_rotation.gif ...
... http://www.astro.ufl.edu/~guzman/ast1002/class_notes/Ch15/gal_rotation.gif ...
WFC3 Science White Paper - Space Telescope Science Institute
... imaging capabilities, WFC3 should provide high sensitivity and large field of view (FOV) in the near-UV and near-IR bands; (3) as a pathfinder for NGST, WFC3 will help refine the questions that NGST will answer by providing complementary UV data and the highest near-IR sensitivity available before N ...
... imaging capabilities, WFC3 should provide high sensitivity and large field of view (FOV) in the near-UV and near-IR bands; (3) as a pathfinder for NGST, WFC3 will help refine the questions that NGST will answer by providing complementary UV data and the highest near-IR sensitivity available before N ...
Hubble 2006: Science Year in Review
... The servicing mission in 1999 enhanced many of Hubble’s subsystems, including the central computer, a new solid-state data-recording system to replace the aging magnetic tape drives, and the gyroscopes needed for pointing control. A month prior to launch, a gyroscope failure had forced Hubble into ...
... The servicing mission in 1999 enhanced many of Hubble’s subsystems, including the central computer, a new solid-state data-recording system to replace the aging magnetic tape drives, and the gyroscopes needed for pointing control. A month prior to launch, a gyroscope failure had forced Hubble into ...
Unlocking the secrets of stellar haloes using combined star counts
... also show that while the haloes of these discs have extremely red colours, the discs themselves do not display any anomalous colours at the corresponding surface brightness levels. This strongly argues against a sky flux residual as the main culprit, since this would result in strange colours in bot ...
... also show that while the haloes of these discs have extremely red colours, the discs themselves do not display any anomalous colours at the corresponding surface brightness levels. This strongly argues against a sky flux residual as the main culprit, since this would result in strange colours in bot ...
DUSTiNGS III: Distribution of Intermediate
... in Nearby Galaxies with Spitzer (DUSTiNGS) survey (Boyer et al. 2015b, hereafter Paper I), we study the radial distributions of the intermediate-age stellar population in nine dwarf galaxies (traced by thermally-pulsating asymptotic giant branch (TP-AGB) stars) and compare their distributions with t ...
... in Nearby Galaxies with Spitzer (DUSTiNGS) survey (Boyer et al. 2015b, hereafter Paper I), we study the radial distributions of the intermediate-age stellar population in nine dwarf galaxies (traced by thermally-pulsating asymptotic giant branch (TP-AGB) stars) and compare their distributions with t ...
ASI 2017 Abstract Book - Astronomical Society of India
... Galaxy transformation in the local Universe One of the most outstanding challenges in extragalactic astronomy is to identify the astrophysical processes responsible for transforming simple dark matter haloes into the heterogenous population of galaxies inhabiting today's Universe. How did different ...
... Galaxy transformation in the local Universe One of the most outstanding challenges in extragalactic astronomy is to identify the astrophysical processes responsible for transforming simple dark matter haloes into the heterogenous population of galaxies inhabiting today's Universe. How did different ...
thick disk - asteroSTEP
... • a gas-rich merger (Brook et al 2004, 2005). The thick disk stars are born in-situ • accretion (Abadi 2003). The thick disk stars come in from outside • heating of the early thin disk by accretion of a massive satellite • radial migration (stars on more energetic orbits migrate out from the inner g ...
... • a gas-rich merger (Brook et al 2004, 2005). The thick disk stars are born in-situ • accretion (Abadi 2003). The thick disk stars come in from outside • heating of the early thin disk by accretion of a massive satellite • radial migration (stars on more energetic orbits migrate out from the inner g ...
ATACAMA LARGE MILLIMETER / SUBMILLIMETER ARRAY
... with the Republic of Chile. ALMA is funded in Europe by the European Organisation for Astronomical Research in the Sourthern Hemisphere (ESO) and in Japan by the National Institutes of Natural Sciences (NINS) in cooperation with the Academia Sinica in Taiwan, and in North America by the U.S. Nationa ...
... with the Republic of Chile. ALMA is funded in Europe by the European Organisation for Astronomical Research in the Sourthern Hemisphere (ESO) and in Japan by the National Institutes of Natural Sciences (NINS) in cooperation with the Academia Sinica in Taiwan, and in North America by the U.S. Nationa ...
Gamma-Ray Bursts and Puzzles of Core
... by spectra of brighter galaxies. With regard to these effects, the R distribution of z for GRB host galaxies well follows the Hubble course for all other “normal” (non-peculiar) galaxies of the deep survey. (In this picture one can see galaxies of large and small luminosities up to dwarfs for identi ...
... by spectra of brighter galaxies. With regard to these effects, the R distribution of z for GRB host galaxies well follows the Hubble course for all other “normal” (non-peculiar) galaxies of the deep survey. (In this picture one can see galaxies of large and small luminosities up to dwarfs for identi ...
The Collision Between The Milky Way And Andromeda
... galaxies. Together with their ∼ 40 smaller companions, the Milky Way and Andromeda comprise our galactic neighborhood, and as such, represent the nearest laboratory, and therefore the most powerful tool, to study the formation and evolution of galactic structure. Like most extragalactic groups, the ...
... galaxies. Together with their ∼ 40 smaller companions, the Milky Way and Andromeda comprise our galactic neighborhood, and as such, represent the nearest laboratory, and therefore the most powerful tool, to study the formation and evolution of galactic structure. Like most extragalactic groups, the ...
OBSERVATIONS OF PHYSICAL PROCESSES IN
... cluster galaxies (BCGs) of those clusters. It has been known for a while that the state of the hot intracluster medium (ICM) gas in the core of a galaxy cluster, quantified as the central entropy of the gas, can be found in two particular states. Galaxy clusters with central entropies greater than 3 ...
... cluster galaxies (BCGs) of those clusters. It has been known for a while that the state of the hot intracluster medium (ICM) gas in the core of a galaxy cluster, quantified as the central entropy of the gas, can be found in two particular states. Galaxy clusters with central entropies greater than 3 ...
Sample syllabus 2 - Johns Hopkins Center for Talented Youth
... Course Description: When the sun runs out of fuel, will it explode in a giant supernova or fade out into a white dwarf? Does every galaxy revolve around a super-massive black hole? Will the universe continue to expand, or will it eventually collapse back upon itself in a reversal of the Big Bang? As ...
... Course Description: When the sun runs out of fuel, will it explode in a giant supernova or fade out into a white dwarf? Does every galaxy revolve around a super-massive black hole? Will the universe continue to expand, or will it eventually collapse back upon itself in a reversal of the Big Bang? As ...
Andromeda: Daughter of Cassiopeia Ἀνδρομέδη Kaitlyn Heaton
... The Andromeda Galaxy. (Shown in figure 2) is the most distant object visible to the naked eye. You can find this famous galaxy on the right side of Andromeda, about half-way up the constellation. [2] It is a spiral galaxy approximately 2.5 million light years distant. In the past, it was also referr ...
... The Andromeda Galaxy. (Shown in figure 2) is the most distant object visible to the naked eye. You can find this famous galaxy on the right side of Andromeda, about half-way up the constellation. [2] It is a spiral galaxy approximately 2.5 million light years distant. In the past, it was also referr ...
JENAM-2011 Book of abstracts
... was launched in 1989 (already more than 20 years ago) with the final Hipparcos and Tycho Catalogues fully published just eight years later. Exceeding the original scientific specifications in terms of both accuracy and in numbers of objects measured, Hipparcos provided not only by far the best stellar ...
... was launched in 1989 (already more than 20 years ago) with the final Hipparcos and Tycho Catalogues fully published just eight years later. Exceeding the original scientific specifications in terms of both accuracy and in numbers of objects measured, Hipparcos provided not only by far the best stellar ...
Light on Dark Matter with Weak Gravitational Lensing
... Weak gravitational lensing has been found to be one of the most promising tools to probe dark matter and dark energy because it provides a method to map directly the distribution of dark matter in the Universe (see [1], [2]). From this dark matter distribution, the nature of dark matter can be bette ...
... Weak gravitational lensing has been found to be one of the most promising tools to probe dark matter and dark energy because it provides a method to map directly the distribution of dark matter in the Universe (see [1], [2]). From this dark matter distribution, the nature of dark matter can be bette ...
IXO as an observatory in the large telescopes era
... central black holes. Any understanding of the formation of galaxies, and their subsequent evolution, will therefore be incomplete without similarly intensive observations of the accretion light from supermassive black holes (SMBHs) in galactic nuclei. To make further progress, we need to chart the f ...
... central black holes. Any understanding of the formation of galaxies, and their subsequent evolution, will therefore be incomplete without similarly intensive observations of the accretion light from supermassive black holes (SMBHs) in galactic nuclei. To make further progress, we need to chart the f ...
Satellite galaxies in hydrodynamical simulations of Milky Way sized
... while the number of observed satellite galaxies still comprises just a few dozens. We note that the modern dark matter only simulations are even able to resolve substructures inside substructures, and interestingly, there is also some observational evidence for a satellite possibly orbiting around a ...
... while the number of observed satellite galaxies still comprises just a few dozens. We note that the modern dark matter only simulations are even able to resolve substructures inside substructures, and interestingly, there is also some observational evidence for a satellite possibly orbiting around a ...
Galaxy Assembly through Mergers
... way. I imagine that putting up with me when I started rambling about galaxies was sometimes not easy, but you always listened. I treasure how you always found a way to make me smile and a word to comfort me. Thank you for being my safe haven. My friends have been the backbone of my life, especially ...
... way. I imagine that putting up with me when I started rambling about galaxies was sometimes not easy, but you always listened. I treasure how you always found a way to make me smile and a word to comfort me. Thank you for being my safe haven. My friends have been the backbone of my life, especially ...
What do we know about the evolution/variation with redshift of dust
... JWST@ROE, Edinburgh, julysee 2016 also Salmon+15, Safarzadeh+16 ...
... JWST@ROE, Edinburgh, julysee 2016 also Salmon+15, Safarzadeh+16 ...
Spectral Line VLBI - Australia Telescope National Facility
... Properties of a Maser • The maser components are extremely small (mas) and narrow (fractions of a km/s) Measure position and velocity of components with great accuracy ...
... Properties of a Maser • The maser components are extremely small (mas) and narrow (fractions of a km/s) Measure position and velocity of components with great accuracy ...
Galaxy Zoo
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.