The DB gap and a new class of pulsating white dwarfs
... 30 000 K < Teff < 45 000 K, which has been regarded as the “DB gap” meaning a range with almost no helium atmosphere white dwarfs. Since all white dwarfs have to evolve through this temperature range along almost the identical sequence on the color-magnitude diagram, this implies that most of the he ...
... 30 000 K < Teff < 45 000 K, which has been regarded as the “DB gap” meaning a range with almost no helium atmosphere white dwarfs. Since all white dwarfs have to evolve through this temperature range along almost the identical sequence on the color-magnitude diagram, this implies that most of the he ...
Mass transport in the heliosphere by energetic neutral atoms
... in the heliospheric sheath are less subjected to ionization and, consequently, the relative abundances of hydrogen ENAs and interstellar hydrogen could be significantly different in the Sun’s vicinity. Therefore mass transport by heliospheric ENAs may become important. We note that there is another ...
... in the heliospheric sheath are less subjected to ionization and, consequently, the relative abundances of hydrogen ENAs and interstellar hydrogen could be significantly different in the Sun’s vicinity. Therefore mass transport by heliospheric ENAs may become important. We note that there is another ...
The cooling of CO white dwarfs: influence of the internal chemical
... of state described in Segretain et al. (1994) which includes accurately all the relevant contributions to the thermodynamical quantities both in the liquid and in the solid phase. Phase separation during solidification has been included, using the phase diagram of the carbon-oxygen binary mixture of ...
... of state described in Segretain et al. (1994) which includes accurately all the relevant contributions to the thermodynamical quantities both in the liquid and in the solid phase. Phase separation during solidification has been included, using the phase diagram of the carbon-oxygen binary mixture of ...
Which Way? Both Ways: Particle
... you’ll see that the disturbance gets bigger and smaller in a very regular way—sometimes the duck is higher up, sometimes lower down—and makes a pattern in time very much like the pattern in space. You can measure how often the wave repeats itself in a given amount of time—how many times the duck rea ...
... you’ll see that the disturbance gets bigger and smaller in a very regular way—sometimes the duck is higher up, sometimes lower down—and makes a pattern in time very much like the pattern in space. You can measure how often the wave repeats itself in a given amount of time—how many times the duck rea ...
Phase Transitions of the First Kind as Radiation
... heat (bond energy) at transition into more condensed phases should occur via heat conductivity, even at constant temperature in the condition of supersaturation, etc. So, possible ways of the removal of latent heat are leave out even under the kinetic approach to condensation and solidification proc ...
... heat (bond energy) at transition into more condensed phases should occur via heat conductivity, even at constant temperature in the condition of supersaturation, etc. So, possible ways of the removal of latent heat are leave out even under the kinetic approach to condensation and solidification proc ...
Matter in strong magnetic fields - the Max Planck Institute for the
... much greater binding energy compared to the zero-field case, and various other bound states become possible, including molecular chains and three-dimensional condensed matter. This article reviews the electronic structure of atoms, molecules, and bulk matter, as well as the thermodynamic properties ...
... much greater binding energy compared to the zero-field case, and various other bound states become possible, including molecular chains and three-dimensional condensed matter. This article reviews the electronic structure of atoms, molecules, and bulk matter, as well as the thermodynamic properties ...
NGC 3801 caught in the act: A post-merger starforming early
... Figure 1. Panchromatic summary of NGC 3801 showing radio continuum (red), Hi emission (blue), 8 µm dust/PAH emission (gray scale), SDSS r′ band single contour (yellow) and near UV (green) images, from various observations (Hota et al. 2009). See Das et al. 2005 and Croston et al. 2007 for CO and X-r ...
... Figure 1. Panchromatic summary of NGC 3801 showing radio continuum (red), Hi emission (blue), 8 µm dust/PAH emission (gray scale), SDSS r′ band single contour (yellow) and near UV (green) images, from various observations (Hota et al. 2009). See Das et al. 2005 and Croston et al. 2007 for CO and X-r ...
PPT
... – w2 is real and decreases through zero, monotonic growth in perturbation. The marginal state is stationary (w=0) – Frequency (w) is complex and its Imaginary part decreases from + to -, a state of growing oscillations appears (overstability). Marginal state is oscillatory motion. ...
... – w2 is real and decreases through zero, monotonic growth in perturbation. The marginal state is stationary (w=0) – Frequency (w) is complex and its Imaginary part decreases from + to -, a state of growing oscillations appears (overstability). Marginal state is oscillatory motion. ...
Radiation-driven Feedback to the ISM around AGNs
... for LA G N /LE = 0.01 and 0.1, respectively. For LA G N = 0.1LE , the net accretion rate is one order of magnitude smaller than the accretion rate required to maintain constant AGN luminosity; the AGN luminosity is assumed to be constant during the calculations provided that the energy conversion effi ...
... for LA G N /LE = 0.01 and 0.1, respectively. For LA G N = 0.1LE , the net accretion rate is one order of magnitude smaller than the accretion rate required to maintain constant AGN luminosity; the AGN luminosity is assumed to be constant during the calculations provided that the energy conversion effi ...
Potential energy
... Thermal Energy The total potential and kinetic energy of all the microscopic particles in an object make up its thermal energy. When an object’s atoms move faster, its thermal energy increases, and the object becomes warmer. ...
... Thermal Energy The total potential and kinetic energy of all the microscopic particles in an object make up its thermal energy. When an object’s atoms move faster, its thermal energy increases, and the object becomes warmer. ...
CEA - Energy
... per second. Therefore, in one hour (3,600 seconds), 3,600 x 1,500 J = 5,400,000 J of electrical energy is transformed into thermal energy. This example shows that the joule is really too small a unit of energy for everyday use. In practice we often use the kilowatt-hour (kWh), the amount of energy u ...
... per second. Therefore, in one hour (3,600 seconds), 3,600 x 1,500 J = 5,400,000 J of electrical energy is transformed into thermal energy. This example shows that the joule is really too small a unit of energy for everyday use. In practice we often use the kilowatt-hour (kWh), the amount of energy u ...
Unit 2 from the BTEC Level 2 First Applied Science Student Book
... Most of the appliances we use at home and at work use energy from sources that are running out. If we are not careful we won’t have any energy to do the things that we take for granted. By understanding energy better, we can plan for the future by designing and building new technology that lets us d ...
... Most of the appliances we use at home and at work use energy from sources that are running out. If we are not careful we won’t have any energy to do the things that we take for granted. By understanding energy better, we can plan for the future by designing and building new technology that lets us d ...
Unit 2 from the BTEC Level 2 First Applied Science Student Book
... Most of the appliances we use at home and at work use energy from sources that are running out. If we are not careful we won’t have any energy to do the things that we take for granted. By understanding energy better, we can plan for the future by designing and building new technology that lets us d ...
... Most of the appliances we use at home and at work use energy from sources that are running out. If we are not careful we won’t have any energy to do the things that we take for granted. By understanding energy better, we can plan for the future by designing and building new technology that lets us d ...
Correlation Between Nitrogen and Oxygen Content in Planetary
... It is well known that no two planetary nebulae look exactly alike; this is not hard to see. But the reason for this is harder to explain. Why does an event that happens in the same way under the same types of conditions produce such a different result (in morphology)? Our hypothesis was that the cau ...
... It is well known that no two planetary nebulae look exactly alike; this is not hard to see. But the reason for this is harder to explain. Why does an event that happens in the same way under the same types of conditions produce such a different result (in morphology)? Our hypothesis was that the cau ...
Clusters of Galaxies
... gravitational material than indicated by the stellar content of the galaxies in the cluster. – This was the first discovery of the preponderance of dark matter in the universe. • The development of large catalogs of clusters (Abell 1958, Zwicky and Herzog 1963) based on eye estimates of the number ...
... gravitational material than indicated by the stellar content of the galaxies in the cluster. – This was the first discovery of the preponderance of dark matter in the universe. • The development of large catalogs of clusters (Abell 1958, Zwicky and Herzog 1963) based on eye estimates of the number ...
HIFI Spectroscopy of H 2 O submm Lines in Nuclei of
... the effect of dust emission and absorption (i.e., IRpumping) on the excitation of molecules was also ...
... the effect of dust emission and absorption (i.e., IRpumping) on the excitation of molecules was also ...
Microplasma
Microplasmas are plasmas of small dimensions, ranging from tens to thousands of micrometers. They can be generated at a variety of temperatures and pressures, existing as either thermal or non-thermal plasmas. Non-thermal microplasmas that can maintain their state at standard temperatures and pressures are readily available and accessible to scientists as they can be easily sustained and manipulated under standard conditions. Therefore, they can be employed for commercial, industrial, and medical applications, giving rise to the evolving field of microplasmas.