Astronomy Astrophysics Gaia-ESO Survey: The analysis of high-resolution The
... E(B − V). The targets selected before April 2012 had a brightest cut on J = 11 instead of 12. When there were not enough targets, the red edge was extended. When there were too many potential targets an algorithm selected roughly the same number of stars per magnitude bin with the rest being marked ...
... E(B − V). The targets selected before April 2012 had a brightest cut on J = 11 instead of 12. When there were not enough targets, the red edge was extended. When there were too many potential targets an algorithm selected roughly the same number of stars per magnitude bin with the rest being marked ...
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 ...
IXO as an observatory in the large telescopes era
... the very phenomena where black holes grow by mass accretion, we need to uncover all populations of AGN over a broad range of redshifts, luminosities, and obscuration, to understand the whole growth history of supermassive black holes and their relation to galaxy formation. Theories suggest that a si ...
... the very phenomena where black holes grow by mass accretion, we need to uncover all populations of AGN over a broad range of redshifts, luminosities, and obscuration, to understand the whole growth history of supermassive black holes and their relation to galaxy formation. Theories suggest that a si ...
Quiescent and flaring X-ray emission from the nearby M/T dwarf
... Loiseau 2008). XMM-Newton carries three X-ray CCD cameras with moderate spectral resolution, as well as two X-ray grating spectrometers, which provide higher spectral resolution. However, the detected signal in the RGS (Reflection Grating Spectrometer) detectors is rather weak; while we clearly see ...
... Loiseau 2008). XMM-Newton carries three X-ray CCD cameras with moderate spectral resolution, as well as two X-ray grating spectrometers, which provide higher spectral resolution. However, the detected signal in the RGS (Reflection Grating Spectrometer) detectors is rather weak; while we clearly see ...
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 ...
EROs and submm galaxies: Expectations for FMOS in the
... Why FMOS is better than OHS Multiplexing Can observe targets for an entire night (or longer) ...
... Why FMOS is better than OHS Multiplexing Can observe targets for an entire night (or longer) ...
X. Nuclear star clusters in low-mass early-type galaxies
... computations, the theoretical framework for the dissipational formation of NSCs provides less quantitative predictions than the inspiralling cluster scenario. There is evidence that both the in situ as well as the GC inspiralling formation happen in galaxies. Evidence for the GC inspiral scenario is ...
... computations, the theoretical framework for the dissipational formation of NSCs provides less quantitative predictions than the inspiralling cluster scenario. There is evidence that both the in situ as well as the GC inspiralling formation happen in galaxies. Evidence for the GC inspiral scenario is ...
solon irving bailey - National Academy of Sciences
... thus describes the arrival at the summit: "Panting for breath, stopping to rest at every three or four steps, often struggling on hands and knees, we kept on, hardly believing there could come an end, when, suddenly, we were there. There was no introduction ; we did not come to the crater; the crate ...
... thus describes the arrival at the summit: "Panting for breath, stopping to rest at every three or four steps, often struggling on hands and knees, we kept on, hardly believing there could come an end, when, suddenly, we were there. There was no introduction ; we did not come to the crater; the crate ...
Me and My Shadow - Making the Sun-Earth - PS
... located in the Southern Hemisphere (between 0° and 23.5°S latitude), the gnomon shadow falls on the lower dial face (see example). Put a little theory into practice--assemble a simple equatorial sundial [courtesy StarDate Online and the University of Texas McDonald Observatory/SCOPE (Southwestern Co ...
... located in the Southern Hemisphere (between 0° and 23.5°S latitude), the gnomon shadow falls on the lower dial face (see example). Put a little theory into practice--assemble a simple equatorial sundial [courtesy StarDate Online and the University of Texas McDonald Observatory/SCOPE (Southwestern Co ...
White dwarf binary
... 2 types of SN Nova or supernova? Standard candles Neutron stars Discovery Crab pulsar Pulsars Pulsars are NS! Magnetic fields Thought question Binaries Spin up Thought question ...
... 2 types of SN Nova or supernova? Standard candles Neutron stars Discovery Crab pulsar Pulsars Pulsars are NS! Magnetic fields Thought question Binaries Spin up Thought question ...
maximum likelihood fitting of tidal streams with application
... that standard Galactic models, such as the Besançon model (Robin et al. 2003), which uses a power-law density profile, do not match the SDSS star counts. The spheroid shape is a current controversy as Helmi (2004) has found prolate models favorable, while Johnston et al. (2005) has found oblate mod ...
... that standard Galactic models, such as the Besançon model (Robin et al. 2003), which uses a power-law density profile, do not match the SDSS star counts. The spheroid shape is a current controversy as Helmi (2004) has found prolate models favorable, while Johnston et al. (2005) has found oblate mod ...
Annual Report 2011 - Max Planck Institute for Astrophysics
... had an internationally-recognized numerical astrophysics program that is unparalleled by any other The Max-Planck-Institut für Astrophysik, called institution of similar size. the MPA for short, was founded in 1958 under the directorship of Ludwig Biermann. It was first established as an offshoot of ...
... had an internationally-recognized numerical astrophysics program that is unparalleled by any other The Max-Planck-Institut für Astrophysik, called institution of similar size. the MPA for short, was founded in 1958 under the directorship of Ludwig Biermann. It was first established as an offshoot of ...
The redshift of extragalactic nebulae
... valid in the absence of absorption and scattering of light in space. However, the finding of a uniform distribution of nebulae up to the greatest attainable distances with a method that requires the virtual absence of absorption and scattering is, in itself almost a proof of the correctness of this ...
... valid in the absence of absorption and scattering of light in space. However, the finding of a uniform distribution of nebulae up to the greatest attainable distances with a method that requires the virtual absence of absorption and scattering is, in itself almost a proof of the correctness of this ...
N-Body/SPH simulations of induced star formation in dwarf galaxies
... increased and will attract other clumps. These clumps will start moving, attracting one another, and merge. When the formed structures of dark matter and baryons contain a sufficient amount of baryonic gas, they can start forming stars and dwarf galaxies are born. Large galaxies as for instance our ...
... increased and will attract other clumps. These clumps will start moving, attracting one another, and merge. When the formed structures of dark matter and baryons contain a sufficient amount of baryonic gas, they can start forming stars and dwarf galaxies are born. Large galaxies as for instance our ...
Turbulence-driven Polar Winds from T Tauri Stars Energized by
... Stellar coronal heating • The well-known “rotation-age-activity” relationship shows how coronal heating weakens as young (solar-type) stars spin down. ...
... Stellar coronal heating • The well-known “rotation-age-activity” relationship shows how coronal heating weakens as young (solar-type) stars spin down. ...
New brown dwarfs and giant planets
... ~50% trig/50% photo parallaxes Proper motions for all (U, V, W) velocities ...
... ~50% trig/50% photo parallaxes Proper motions for all (U, V, W) velocities ...
2 The Concept of “Spectral Classes”
... Institute (MAST) receives. The IUE satellite project, with the FUSE project following suit some years later, attempted to solve this problem by cataloging stars by “Object Classes.” Later NASA space-borne missions have not attempted any such plan and at most have provided “object classes” as arbitra ...
... Institute (MAST) receives. The IUE satellite project, with the FUSE project following suit some years later, attempted to solve this problem by cataloging stars by “Object Classes.” Later NASA space-borne missions have not attempted any such plan and at most have provided “object classes” as arbitra ...
Article PDF - IOPscience
... segments” that cover the overlapping range between the first and second orders in both SL and LL; we used these to verify the flux calibration between the first and second orders. In addition to the spectroscopic modules, the IRS also contains two peakup imaging arrays used to position the target on ...
... segments” that cover the overlapping range between the first and second orders in both SL and LL; we used these to verify the flux calibration between the first and second orders. In addition to the spectroscopic modules, the IRS also contains two peakup imaging arrays used to position the target on ...
Search For Gas Giants Around Late-m Dwarfs - STARS
... atomic lines, the measurement of pseudo-equivalent widths, masses, surface gravity, effective temperature, absolute radial velocities, rotational velocities and rotation periods. The identification of neutral atomic lines was carried out using the Vienna Atomic line Database. We were able to confirm ...
... atomic lines, the measurement of pseudo-equivalent widths, masses, surface gravity, effective temperature, absolute radial velocities, rotational velocities and rotation periods. The identification of neutral atomic lines was carried out using the Vienna Atomic line Database. We were able to confirm ...
Statistical properties of a sample of periodically variable B-type supergiants ⋆
... the first harmonic of the main frequency was also needed to obtain an accurate fit to the HIPPARCOS data (see, e.g., Fig. 1). We found evidence for multiperiodicity for eleven stars. The detected periods range from 1.15 to 25 d, with only four stars having a period longer than 10 d. Thus we confirm ...
... the first harmonic of the main frequency was also needed to obtain an accurate fit to the HIPPARCOS data (see, e.g., Fig. 1). We found evidence for multiperiodicity for eleven stars. The detected periods range from 1.15 to 25 d, with only four stars having a period longer than 10 d. Thus we confirm ...
A catalogue of the Chandra Deep Field South with multi
... COMBO-17: Kleinheinrich et al. (2004) have used galaxygalaxy lensing to study dark matter haloes of galaxies and their dependence on observed galaxy properties. Gray et al. (2004) have discussed the correlation of galaxy properties with the underlying dark matter density field, based on a weak lensi ...
... COMBO-17: Kleinheinrich et al. (2004) have used galaxygalaxy lensing to study dark matter haloes of galaxies and their dependence on observed galaxy properties. Gray et al. (2004) have discussed the correlation of galaxy properties with the underlying dark matter density field, based on a weak lensi ...
A Budget and Accounting of Metals at z~ 0: Results from the COS
... of oxygen in their ISM. COS-Halos has specifically addressed the metal content of diffuse halo gas. The current study aims to place these findings on highly ionized oxygen into the larger context of metal masses contained within all galactic and circumgalactic components: stars, dust, and the other ...
... of oxygen in their ISM. COS-Halos has specifically addressed the metal content of diffuse halo gas. The current study aims to place these findings on highly ionized oxygen into the larger context of metal masses contained within all galactic and circumgalactic components: stars, dust, and the other ...