Lokal fulltext - Chalmers Publication Library
... In order to classify stars, one can look at their locations in the HertzsprungRussell (HR) diagram (Figure 1.1). This is a plot of luminosity against temperature, and a star’s location on the HR diagram indicates both its mass and evolutionary status. Most stars are on the ”main sequence”, which cor ...
... In order to classify stars, one can look at their locations in the HertzsprungRussell (HR) diagram (Figure 1.1). This is a plot of luminosity against temperature, and a star’s location on the HR diagram indicates both its mass and evolutionary status. Most stars are on the ”main sequence”, which cor ...
Stellar limb-darkening coefficients for CoRot and Kepler*
... Transiting exoplanets have provided an unprecedented opportunity to directly measure physical parameters of the planet and host star, such as mass and radius. The lightcurve shape of a transit (where the planet passes in front of the star as viewed from the Earth) is primarily determined by the plan ...
... Transiting exoplanets have provided an unprecedented opportunity to directly measure physical parameters of the planet and host star, such as mass and radius. The lightcurve shape of a transit (where the planet passes in front of the star as viewed from the Earth) is primarily determined by the plan ...
Introduc on to the Fundamental Astrophysics Course
... from only a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the universe. • All stars are born from collapsing ...
... from only a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the universe. • All stars are born from collapsing ...
The Big Bang - Community Resources for Science
... We are going to play bingo again. Mark-up your periodic tables with these elements while I clean up my mess. After a few minutes put up the slide with answers. One thing you may notice is that most of the common elements found in the sun can also be found in the human body. So now we have learned t ...
... We are going to play bingo again. Mark-up your periodic tables with these elements while I clean up my mess. After a few minutes put up the slide with answers. One thing you may notice is that most of the common elements found in the sun can also be found in the human body. So now we have learned t ...
Multi-dimensional structure of accreting young stars
... to the radial grid close to the surface. In the 1D model, the surface is defined using the Eddington approximation, with the surface corresponding to the photosphere at an optical depth τ = 2/3 and a surface temperature T surf equal to the effective temperature T eff (see e.g. Chabrier & Baraffe 199 ...
... to the radial grid close to the surface. In the 1D model, the surface is defined using the Eddington approximation, with the surface corresponding to the photosphere at an optical depth τ = 2/3 and a surface temperature T surf equal to the effective temperature T eff (see e.g. Chabrier & Baraffe 199 ...
Forming Jupiter, Saturn, Uranus and Neptune in few million years by
... mass in the interval is nmdm / m2a . Depending on the value of a the mass in the interval would be mostly contained in small (a > 2) or large (a < 2) planetesimals. Wetherill and Stewart (1993) studied the evolution of the planetesimal system considering an initial population of planetesimals whose ...
... mass in the interval is nmdm / m2a . Depending on the value of a the mass in the interval would be mostly contained in small (a > 2) or large (a < 2) planetesimals. Wetherill and Stewart (1993) studied the evolution of the planetesimal system considering an initial population of planetesimals whose ...
β-Decay Half-Lives of 110 Neutron-Rich Nuclei across the N = 82
... nuclei [49]. However, the new half-lives clearly indicate that ...
... nuclei [49]. However, the new half-lives clearly indicate that ...
Extreme abundance ratios in the polluted atmosphere of the cool
... Downloaded from http://mnras.oxfordjournals.org/ at Astronomical Institue CAS on March 16, 2016 ...
... Downloaded from http://mnras.oxfordjournals.org/ at Astronomical Institue CAS on March 16, 2016 ...
The Sirius Festival
... primitively at first. Human progress has been very rapid, indeed, as a result of this sacrificial ‘implantation’ and the time is rapidly nearing when humanity may enter the Kingdom of Souls having absorbed what the Solar Angels came to this planet to teach. Occultism presents an amazing idea when it ...
... primitively at first. Human progress has been very rapid, indeed, as a result of this sacrificial ‘implantation’ and the time is rapidly nearing when humanity may enter the Kingdom of Souls having absorbed what the Solar Angels came to this planet to teach. Occultism presents an amazing idea when it ...
Modelling the sulphur chemistry evolution in Orion KL
... Context. We present a study of the sulphur chemistry evolution in the region Orion KL along the gas and grain phases of the cloud. Aims. Our aim is to investigate the processes that dominate the sulphur chemistry in Orion KL and to determine how physical and chemical parameters, such as the final ma ...
... Context. We present a study of the sulphur chemistry evolution in the region Orion KL along the gas and grain phases of the cloud. Aims. Our aim is to investigate the processes that dominate the sulphur chemistry in Orion KL and to determine how physical and chemical parameters, such as the final ma ...
Comets- Visitors from the Frozen Edge of the Solar System
... spectacular, the material in the tail is only very tenuous, with a density of matter that is really not so different from that of interplanetary space. By the 16th century it had already been well documented that a comet’s tail always points away from the Sun rather than always streaming behind the ...
... spectacular, the material in the tail is only very tenuous, with a density of matter that is really not so different from that of interplanetary space. By the 16th century it had already been well documented that a comet’s tail always points away from the Sun rather than always streaming behind the ...
- Spiral - Imperial College London
... with solar activity (see e.g. Fröhlich 2006; Ball et al. 2012; Solanki et al. 2013, and references therein), the regime of the solar variability in the visible part of the spectrum is still under debate. The Sun is located so close to the threshold between direct and inverse correlations of visible ...
... with solar activity (see e.g. Fröhlich 2006; Ball et al. 2012; Solanki et al. 2013, and references therein), the regime of the solar variability in the visible part of the spectrum is still under debate. The Sun is located so close to the threshold between direct and inverse correlations of visible ...
ASTR 330: The Solar System Dr Conor Nixon Fall 2006
... • Note that, if we were able to detect the transverse motion as well, using astrometry, we could then find the exact mass! Dr Conor Nixon Fall 2006 ...
... • Note that, if we were able to detect the transverse motion as well, using astrometry, we could then find the exact mass! Dr Conor Nixon Fall 2006 ...
Solar chromospheric flares: energy release, transport and radiation
... by a magnetic convulsion propagating downwards, with roughly the same total energy (as indicated by studies of flare and CME energetics) but launched into a much smaller volume and onto a field which is line-tied at the photosphere. This Poynting-flux picture is far less developed than the electron ...
... by a magnetic convulsion propagating downwards, with roughly the same total energy (as indicated by studies of flare and CME energetics) but launched into a much smaller volume and onto a field which is line-tied at the photosphere. This Poynting-flux picture is far less developed than the electron ...
Analysis of white dwarfs with strange-matter cores
... At densities higher than ρdrip free neutrons are released from nuclei. These would gravitate to the core where they would be absorbed and converted into strange matter [9–11]. As long as this continues, the strange-matter core will grow. However, it is expected [1] that a sharp boundary between the ...
... At densities higher than ρdrip free neutrons are released from nuclei. These would gravitate to the core where they would be absorbed and converted into strange matter [9–11]. As long as this continues, the strange-matter core will grow. However, it is expected [1] that a sharp boundary between the ...
PETAL: A Research Pathway to Fossil
... process. A computer sampled the signal from the camera at a frequency of 30 frames per second. This frequency is high enough for resolving the dynamics of individual corrective actions (Fig. 3), and also of detecting mechanical vibrations with frequencies up to about 5-10 Hz. Each successive pair of ...
... process. A computer sampled the signal from the camera at a frequency of 30 frames per second. This frequency is high enough for resolving the dynamics of individual corrective actions (Fig. 3), and also of detecting mechanical vibrations with frequencies up to about 5-10 Hz. Each successive pair of ...