the PDF - Montana State University
... remains a mystery. In this work, we place the solar cycle in a broader context by examining the long-term variability of solar analog stars within 5% of the solar effective temperature, but varied in rotation rate and metallicity. Emission in the Fraunhofer H & K line cores from singly-ionized calci ...
... remains a mystery. In this work, we place the solar cycle in a broader context by examining the long-term variability of solar analog stars within 5% of the solar effective temperature, but varied in rotation rate and metallicity. Emission in the Fraunhofer H & K line cores from singly-ionized calci ...
WFC3 Science White Paper - Space Telescope Science Institute
... redshifted into the 2000-4000 Å region in the observer’s frame, making this a key probe of distant star-forming galaxies and active galactic nuclei (AGN). This near-UV region is particularly important in searching for galaxies in the z § -2 redshift range, based on “Lyman-dropouts.” It is at these ...
... redshifted into the 2000-4000 Å region in the observer’s frame, making this a key probe of distant star-forming galaxies and active galactic nuclei (AGN). This near-UV region is particularly important in searching for galaxies in the z § -2 redshift range, based on “Lyman-dropouts.” It is at these ...
Astronomy 113 Laboratory Manual - UW
... Polaris, the North Star, has long shown the way to travelers. At sea the only "landmarks" are celestial. It was Polaris that guided sailors around the globe, and not only by showing the way North. Using a sextant a European captain sailing to the New World could also accurately find the ship's latit ...
... Polaris, the North Star, has long shown the way to travelers. At sea the only "landmarks" are celestial. It was Polaris that guided sailors around the globe, and not only by showing the way North. Using a sextant a European captain sailing to the New World could also accurately find the ship's latit ...
The birth rate of subluminous and overluminous type Ia supernovae
... 0.35 and 0.53, and the primordial separation is even more close, i.e. from 17 R to 30 R . Because of the close separation, the primary fills its Roche lobe when it is crossing the Hertzprung Gap (HG), and then a stable RLOF occurs. The primary loses its hydrogen-rich envelope and then becomes a he ...
... 0.35 and 0.53, and the primordial separation is even more close, i.e. from 17 R to 30 R . Because of the close separation, the primary fills its Roche lobe when it is crossing the Hertzprung Gap (HG), and then a stable RLOF occurs. The primary loses its hydrogen-rich envelope and then becomes a he ...
Observational Studies of Interacting Galaxies and the Development
... photometric studies better constrain the number density evolution of wet and dry mergers through five CFHTLS broad band photometry up to z ∼ 1. Meanwhile, by comparing the merger and elliptical galaxy mass density function, I discovered that the most massive mergers are not all formed via merging pr ...
... photometric studies better constrain the number density evolution of wet and dry mergers through five CFHTLS broad band photometry up to z ∼ 1. Meanwhile, by comparing the merger and elliptical galaxy mass density function, I discovered that the most massive mergers are not all formed via merging pr ...
PPT - IAC
... The first extensive CCD morphological studies had appeared: Jewitt et al 1986 ApJ 302, 727 44 PNe (haloes) Chu et al. 1987 ApJS 64, 529 ~100 PNe (multiple-shells) Balick 1987 AJ 94, 671 51 PNe and a morphological sequence (round elliptical butterfly ) linked with the Generalised Interacting Stel ...
... The first extensive CCD morphological studies had appeared: Jewitt et al 1986 ApJ 302, 727 44 PNe (haloes) Chu et al. 1987 ApJS 64, 529 ~100 PNe (multiple-shells) Balick 1987 AJ 94, 671 51 PNe and a morphological sequence (round elliptical butterfly ) linked with the Generalised Interacting Stel ...
Accretion Power in Astrophysics, Third Editiion
... expansion of observational techniques in astronomy, in particular the exploitation of the full range of the electromagnetic spectrum from the radio to X-rays and γ-rays. At the same time, the existence of compact objects has been placed beyond doubt by the discovery of the pulsars, and black holes h ...
... expansion of observational techniques in astronomy, in particular the exploitation of the full range of the electromagnetic spectrum from the radio to X-rays and γ-rays. At the same time, the existence of compact objects has been placed beyond doubt by the discovery of the pulsars, and black holes h ...
INSTRUCTION MANUAL
... sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your NexStar, so you should keep this manual handy until you have fully ma ...
... sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your NexStar, so you should keep this manual handy until you have fully ma ...
Protoplanetary Disks and Their Evolution
... The process of star and planet formation begins with the collapse of a molecular core. The mass is initially all in the core but it is processed through an accretion disk inward onto the protostar and outward through an outflow. Ultimately, the core is dispersed and the remaining mass is concentrated ...
... The process of star and planet formation begins with the collapse of a molecular core. The mass is initially all in the core but it is processed through an accretion disk inward onto the protostar and outward through an outflow. Ultimately, the core is dispersed and the remaining mass is concentrated ...
Gravitational-wave signal from binary neutron star merger
... simulation results with GW observation, or with analytical models, retaining the ability to distinguish the gravitational signal from different sources, for example, to be able to measure EOS-related effects, like tidal deformations in the final part of the pre-merger phase [90, 91]. The initial con ...
... simulation results with GW observation, or with analytical models, retaining the ability to distinguish the gravitational signal from different sources, for example, to be able to measure EOS-related effects, like tidal deformations in the final part of the pre-merger phase [90, 91]. The initial con ...
PHD THESIS Theory and applications for transiting extrasolar planets
... later, Johhannes Kepler discovered the planetary motion laws and at the end of 17th century, P. Laplace and E. Kant suggested the first scientific theory for planetary creation. In early 19th century, after measuring the temperature of stars, astronomers realized that stars are too hot to harbour li ...
... later, Johhannes Kepler discovered the planetary motion laws and at the end of 17th century, P. Laplace and E. Kant suggested the first scientific theory for planetary creation. In early 19th century, after measuring the temperature of stars, astronomers realized that stars are too hot to harbour li ...
Testing the Initial-Final Mass Relationship of White Dwarfs Silvia Catal´ an Ruiz
... observations of white dwarfs for which some important parameters, such as their total age or metallicity, are available. Most of the works carried out up to now have focused in studying white dwarfs in open clusters (Ferrario et al. 2005, Dobbie et al. 2006), whose ages can be determined from model ...
... observations of white dwarfs for which some important parameters, such as their total age or metallicity, are available. Most of the works carried out up to now have focused in studying white dwarfs in open clusters (Ferrario et al. 2005, Dobbie et al. 2006), whose ages can be determined from model ...
... that happen to have a prominent disk around them [and] ellipticals as bulges that for some reason have missed the opportunity to acquire or maintain a prominent disk.” We adopt this point of view. However, as observations improve, we discover more and more features that make it difficult to interpre ...
Magnetism in Isolated and Binary White Dwarfs
... the gasdynamics of mass transfer and the radiation properties. The process of magnetized accretion onto compact stars can now be examined in great detail using magnetic white dwarfs in the MCVs, complementing similar work in the X-ray band with neutron star binaries. Since the MCVs harbor magnetic w ...
... the gasdynamics of mass transfer and the radiation properties. The process of magnetized accretion onto compact stars can now be examined in great detail using magnetic white dwarfs in the MCVs, complementing similar work in the X-ray band with neutron star binaries. Since the MCVs harbor magnetic w ...
Full text - FNWI (Science) Education Service Centre
... not all of the planet-crossing comets were ejected. Some comets did not gain enough energy to be lost to the ISM but instead were perturbed onto orbits with very large semi-major axes. Their perihelion distances however, remained within the planetary orbits. This means that, although the comet will ...
... not all of the planet-crossing comets were ejected. Some comets did not gain enough energy to be lost to the ISM but instead were perturbed onto orbits with very large semi-major axes. Their perihelion distances however, remained within the planetary orbits. This means that, although the comet will ...
Thesis (complete) - Research Explorer
... produced by nuclear burning continuously replenishes what is lost by radiation and allows stars to remain in stable configurations for long periods of time. As these stars evolve they undergo many different processes that are triggered mainly by the exhaustion of fuel. Those changes are reflected in ...
... produced by nuclear burning continuously replenishes what is lost by radiation and allows stars to remain in stable configurations for long periods of time. As these stars evolve they undergo many different processes that are triggered mainly by the exhaustion of fuel. Those changes are reflected in ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.