The VIMOS Ultra-Deep Survey (VUDS): Fast Increase in the Fraction
... Deharveng et al. 2008; Hayes et al. 2014). As a result of their nature, Lyα photons are found to be scattered at much larger scales than UV photons (Steidel et al. 2011; Momose et al. 2014). Predicting the escape fraction of the Lyα photons as a function of the galaxy properties involves including a ...
... Deharveng et al. 2008; Hayes et al. 2014). As a result of their nature, Lyα photons are found to be scattered at much larger scales than UV photons (Steidel et al. 2011; Momose et al. 2014). Predicting the escape fraction of the Lyα photons as a function of the galaxy properties involves including a ...
The Early Evolution of Solids in Protoplanetary Disks
... and going up to the gas-accretion phase leading to the build up of rocky planets and gas giants. The first stages of this process are characterized by collisional growth of tiny subµm sized grains, as those found in the interstellar medium. Observations in the millimeter can directly probe the exist ...
... and going up to the gas-accretion phase leading to the build up of rocky planets and gas giants. The first stages of this process are characterized by collisional growth of tiny subµm sized grains, as those found in the interstellar medium. Observations in the millimeter can directly probe the exist ...
https://tel.archives-ouvertes.fr/file/index/docid/1058049/filename/HOU_XIAN_2013.pdf
... be a graduate student working on Fermi gamma-ray pulsars in the Astroparticle group in CENBG, and for having accompanied me in these three years with his fruitful instructive guidance in my work. I appreciate also his American humor and his optimistic attitude for the life, which have brought me hap ...
... be a graduate student working on Fermi gamma-ray pulsars in the Astroparticle group in CENBG, and for having accompanied me in these three years with his fruitful instructive guidance in my work. I appreciate also his American humor and his optimistic attitude for the life, which have brought me hap ...
Infrared Astronomy
... Humans at normal body temperature, radiate most strongly in the infrared, which is definitely not seen by human eyes. The scientific discovery that the heat we all feel coming from the Sun is largely a radiation beyond the visible red colour of the solar spectrum was made by William Herschel in 1800 ...
... Humans at normal body temperature, radiate most strongly in the infrared, which is definitely not seen by human eyes. The scientific discovery that the heat we all feel coming from the Sun is largely a radiation beyond the visible red colour of the solar spectrum was made by William Herschel in 1800 ...
FY96
... They obtained over 200 new radial velocities for stars with previously measured proper motions with distances out to 8 kiloparsecs from the plane. They found that the stars tend to be concentrated in groups with common space velocities and metallicities. One of the most distinct groups is metal-poor ...
... They obtained over 200 new radial velocities for stars with previously measured proper motions with distances out to 8 kiloparsecs from the plane. They found that the stars tend to be concentrated in groups with common space velocities and metallicities. One of the most distinct groups is metal-poor ...
Colour-magnitude diagrams of the post
... colour as BHB). The numbers are self explaining. There is a big jump from the R > 150 pixels (which is almost pure field) and R < 100. The slow decline at R < 80 could be just a stochastic fluctuation and/or a selection effect (loosing blue stars because of crowding in V ). The strong relative conce ...
... colour as BHB). The numbers are self explaining. There is a big jump from the R > 150 pixels (which is almost pure field) and R < 100. The slow decline at R < 80 could be just a stochastic fluctuation and/or a selection effect (loosing blue stars because of crowding in V ). The strong relative conce ...
Lyman-alpha imaging of starburst galaxies in the local universe and beyond Matthew Hayes
... enhanced resolving power of the Hubble Space Telescope. These examples select just a few of the many galaxy surveys using optical wavelengths; cov- ...
... enhanced resolving power of the Hubble Space Telescope. These examples select just a few of the many galaxy surveys using optical wavelengths; cov- ...
Revising the census of low luminosity AGN
... THE LINERs REGION IS MOSTLY POPULATED BY NON-AGN THE EW IS A BEST PREDICTOR FOR GENUINE AGN THAN THE DIAGNOSTIC DIAGRAMS A LOW EW (~1 Å) IS CHARACTERISTIC OF STELLAR PROCESSES AGN 10 - Roma 10/09/2012 ...
... THE LINERs REGION IS MOSTLY POPULATED BY NON-AGN THE EW IS A BEST PREDICTOR FOR GENUINE AGN THAN THE DIAGNOSTIC DIAGRAMS A LOW EW (~1 Å) IS CHARACTERISTIC OF STELLAR PROCESSES AGN 10 - Roma 10/09/2012 ...
Slides - AO4ELT3
... It will be possible with ELTs+SKA to study star formation rates and feedback from active galactic nuclei in normal galaxies out to z ...
... It will be possible with ELTs+SKA to study star formation rates and feedback from active galactic nuclei in normal galaxies out to z ...
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 ...
Galaxy Assembly through Mergers
... of star formation to severe morphological changes. On the other hand, for mergers between elliptical, gas-poor galaxies, the apparent absence of strong perturbations poses another challenge, even though, given their massive nature, they may be responsible for the high mass end of the mass function. ...
... of star formation to severe morphological changes. On the other hand, for mergers between elliptical, gas-poor galaxies, the apparent absence of strong perturbations poses another challenge, even though, given their massive nature, they may be responsible for the high mass end of the mass function. ...
PDF hosted at the Radboud Repository of the Radboud University
... processing of a massive (> 1 M ) carbon-oxygen white dwarf to primarily radioactive nickel. Lastly, the explosion energy of type Ia supernovae is roughly similar to the binding energy of a massive carbon-oxygen white dwarf (Iben 1982; Iben & Tutukov 1984). The Chandrasekhar mass (∼ 1.38M ) is the ...
... processing of a massive (> 1 M ) carbon-oxygen white dwarf to primarily radioactive nickel. Lastly, the explosion energy of type Ia supernovae is roughly similar to the binding energy of a massive carbon-oxygen white dwarf (Iben 1982; Iben & Tutukov 1984). The Chandrasekhar mass (∼ 1.38M ) is the ...
Protoplanetary Disks and their Evolution
... been obtained for over 2000 YSOs therein (e.g., Kesser-Silacci et al. 2006; Furlan et al. 2009; Oliveria et al. 2010). The precision and wavelength coverage of these observations show the tremendous diversity of disk SEDs and the inadequacy of a single parameter, αIR , to characterize the full range ...
... been obtained for over 2000 YSOs therein (e.g., Kesser-Silacci et al. 2006; Furlan et al. 2009; Oliveria et al. 2010). The precision and wavelength coverage of these observations show the tremendous diversity of disk SEDs and the inadequacy of a single parameter, αIR , to characterize the full range ...
W.M. Keck Observatory Annual Report 2009
... to astronomical research 365 days/nights per year. Observing time on the Keck telescopes is highly prized and is divided each year among its partner institutions: the California Institute of Technology, the University of California and NASA, as well as the University of Hawai’i. The broader astronom ...
... to astronomical research 365 days/nights per year. Observing time on the Keck telescopes is highly prized and is divided each year among its partner institutions: the California Institute of Technology, the University of California and NASA, as well as the University of Hawai’i. The broader astronom ...
THE OFFSET AND HOST LIGHT DISTRIBUTIONS OF LONG
... hosts, and (ii) measuring the fractional brightness at the LGRB positions relative to the overall distribution of light within their hosts. In this context, Bloom et al. (2002) combined groundbased afterglow observations and Hubble Space Telescope (HST) host observations to measure the offsets of 20 ...
... hosts, and (ii) measuring the fractional brightness at the LGRB positions relative to the overall distribution of light within their hosts. In this context, Bloom et al. (2002) combined groundbased afterglow observations and Hubble Space Telescope (HST) host observations to measure the offsets of 20 ...
The correlation between galaxy morphology and star
... much more expensive because it requires a large number of photometric bands to yield robust photometric redshifts as well as robust measures of the stellar population properties, i.e. stellar mass, star–formation rate, dust obscuration and age of the dominant stellar population. For the same reason, ...
... much more expensive because it requires a large number of photometric bands to yield robust photometric redshifts as well as robust measures of the stellar population properties, i.e. stellar mass, star–formation rate, dust obscuration and age of the dominant stellar population. For the same reason, ...
A Universal Stellar Initial Mass Function? A Critical Look Further
... The second implicit assumption is required due to finite stellar lifetimes. If one counts stars in a population spanning a large range of ages (as in the disk of the Milky Way), one can only construct the present-day mass function (PDMF). In this example, some fraction of the more massive stars with ...
... The second implicit assumption is required due to finite stellar lifetimes. If one counts stars in a population spanning a large range of ages (as in the disk of the Milky Way), one can only construct the present-day mass function (PDMF). In this example, some fraction of the more massive stars with ...
The recent star-formation history of the Large and Small Magellanic
... Methods. We traced the age of the last star-formation event (LSFE) in the inner Large and Small Magellanic Cloud (L&SMC) using the photometric data in V and I passbands from the Optical Gravitational Lensing Experiment (OGLE-III) and the Magellanic Cloud Photometric Survey (MCPS). The LSFE is estima ...
... Methods. We traced the age of the last star-formation event (LSFE) in the inner Large and Small Magellanic Cloud (L&SMC) using the photometric data in V and I passbands from the Optical Gravitational Lensing Experiment (OGLE-III) and the Magellanic Cloud Photometric Survey (MCPS). The LSFE is estima ...
X-ray binaries in the Milky Way and other galaxies
... 6.3. Total X-ray luminosity as SFR indicator . . . . . . . . . . . . . . . . . . . 6.4. Theoretical LX –SFR relation . . . . . . . . . . . . . . . . . . . . . . . . . 6.5. LX –SFR relation: comparison with the data . . . . . . . . . . . . . . . . . 6.6. Hubble Deep Field North . . . . . . . . . . . ...
... 6.3. Total X-ray luminosity as SFR indicator . . . . . . . . . . . . . . . . . . . 6.4. Theoretical LX –SFR relation . . . . . . . . . . . . . . . . . . . . . . . . . 6.5. LX –SFR relation: comparison with the data . . . . . . . . . . . . . . . . . 6.6. Hubble Deep Field North . . . . . . . . . . . ...
The Evolution of Star Formation Activity in . Cory R. Wagner
... In this thesis, we explore 7.5 billion years of evolution in cluster galaxy star formation activity using a sample of 11 high-redshift (1 < z < 1.5) clusters from the IRAC Shallow Cluster Survey, and 25 low-redshift (0.15 < z < 1) clusters from The Cluster Lensing And Supernova survey with Hubble. W ...
... In this thesis, we explore 7.5 billion years of evolution in cluster galaxy star formation activity using a sample of 11 high-redshift (1 < z < 1.5) clusters from the IRAC Shallow Cluster Survey, and 25 low-redshift (0.15 < z < 1) clusters from The Cluster Lensing And Supernova survey with Hubble. W ...
Hubble 2006: Science Year in Review
... Camera 3 (WFC3). COS is the most sensitive ultraviolet spectrograph ever built for Hubble. The instrument will probe the cosmic web—the large-scale structure of the universe—whose form is determined by the gravity of dark matter and is traced by the spatial distribution of galaxies and intergalactic ...
... Camera 3 (WFC3). COS is the most sensitive ultraviolet spectrograph ever built for Hubble. The instrument will probe the cosmic web—the large-scale structure of the universe—whose form is determined by the gravity of dark matter and is traced by the spatial distribution of galaxies and intergalactic ...
Present-day cosmic abundances - Dr. Karl Remeis
... An ideal alternative to find a reference for the chemical composition of cosmic matter are normal unevolved early B-type stars of ∼8-18 M⊙ , which can provide simultaneously temporal (present-day) and local (birth place) information on chemical abundances. They can be observed not only in the solar ...
... An ideal alternative to find a reference for the chemical composition of cosmic matter are normal unevolved early B-type stars of ∼8-18 M⊙ , which can provide simultaneously temporal (present-day) and local (birth place) information on chemical abundances. They can be observed not only in the solar ...
Radiative Heating and Cooling in Circumstellar Envelopes
... This thesis investigates the thermal state of diluted gases being exposed to stellar radiation elds. On the basis of a steady{state non{LTE description, the radiative heating and cooling rates of the gas are determined, considering the typical densities present in circumstellar envelopes. The follo ...
... This thesis investigates the thermal state of diluted gases being exposed to stellar radiation elds. On the basis of a steady{state non{LTE description, the radiative heating and cooling rates of the gas are determined, considering the typical densities present in circumstellar envelopes. The follo ...
Galaxy Formation and Evolution.
... physics, and cosmology. Covering diverse topics from these disciplines, all of which are needed to understand how galaxies form and evolve, this book is ideal for researchers entering the field. Individual chapters explore the evolution of the Universe as a whole and its particle and radiation conte ...
... physics, and cosmology. Covering diverse topics from these disciplines, all of which are needed to understand how galaxies form and evolve, this book is ideal for researchers entering the field. Individual chapters explore the evolution of the Universe as a whole and its particle and radiation conte ...
probing quasar environments with tunable filter
... The Taurus Tunable Filter (TTF) on the Anglo-Australian Telescope provides a powerful and flexible method of performing surveys for line-emitting objects, enabling nearmonochromatic imaging over a narrow bandpass at wavelengths in the range 3700–9600 Å. We have used the TTF to perform a search for ...
... The Taurus Tunable Filter (TTF) on the Anglo-Australian Telescope provides a powerful and flexible method of performing surveys for line-emitting objects, enabling nearmonochromatic imaging over a narrow bandpass at wavelengths in the range 3700–9600 Å. We have used the TTF to perform a search for ...