Set 3 AStronomy questions
... X) the same surface temperatures Y) very similar chemical compositions Z) the same apparent magnitudes ANSWER: Y) VERY SIMILAR CHEMICAL COMPOSITIONS BONUS 7) ASTRONOMY Multiple Choice When binary stars are made of a main sequence star and a compact white dwarf, as long as the white dwarf’s mass rema ...
... X) the same surface temperatures Y) very similar chemical compositions Z) the same apparent magnitudes ANSWER: Y) VERY SIMILAR CHEMICAL COMPOSITIONS BONUS 7) ASTRONOMY Multiple Choice When binary stars are made of a main sequence star and a compact white dwarf, as long as the white dwarf’s mass rema ...
The Alpha Centauri binary system
... the Sun, to ensure that a consistent choice of continuum windows was achieved in all three objects, since the very stronglined spectra of the α Cen stars caused continuum depressions systematically larger than in the Sun. A number of pixels was chosen in the selected continuum windows, followed by t ...
... the Sun, to ensure that a consistent choice of continuum windows was achieved in all three objects, since the very stronglined spectra of the α Cen stars caused continuum depressions systematically larger than in the Sun. A number of pixels was chosen in the selected continuum windows, followed by t ...
PPT - University of Waterloo
... Formation and evolution of galaxies and clusters in the early universe Star formation rates, bolometric luminosities, AGN structure Evolution of chemical elements Formation of stars & planets and physics of the interstellar medium Tracers of structure, kinematics, chemistry in star forming reg ...
... Formation and evolution of galaxies and clusters in the early universe Star formation rates, bolometric luminosities, AGN structure Evolution of chemical elements Formation of stars & planets and physics of the interstellar medium Tracers of structure, kinematics, chemistry in star forming reg ...
Asteroid Rotation Periods
... the rotation period of the asteroid around its axis. But which axis? Since each asteroid would have suffered several large impacts, one would expect asteroids to have in general a complex rotational behavior and display precessional motion (rotation around more than a single axis) as well to the nor ...
... the rotation period of the asteroid around its axis. But which axis? Since each asteroid would have suffered several large impacts, one would expect asteroids to have in general a complex rotational behavior and display precessional motion (rotation around more than a single axis) as well to the nor ...
The Kuiper Belt Explored by Serendipitous Stellar Occultations
... us to validate the detection of such events and also provide information about the size and distance of the occulting objects (see below). The limitation of the serendipitous occultations method is that the objects detected are otherwise unknown, insofar as it is not possible to see them due to thei ...
... us to validate the detection of such events and also provide information about the size and distance of the occulting objects (see below). The limitation of the serendipitous occultations method is that the objects detected are otherwise unknown, insofar as it is not possible to see them due to thei ...
galileo and the discovery of the phases of venus
... Westfall’s view the “dishonesty thesis”.2 According to the dishonesty thesis, it was the following chain of events that led to the discovery of Venus’s phases. The prediction of the existence of Venus’s phases was made by Castelli in a letter presumably received by Galileo on 11 December 1610. Caste ...
... Westfall’s view the “dishonesty thesis”.2 According to the dishonesty thesis, it was the following chain of events that led to the discovery of Venus’s phases. The prediction of the existence of Venus’s phases was made by Castelli in a letter presumably received by Galileo on 11 December 1610. Caste ...
CHAPTER 1 Meteorites, Asteroids, and Comets
... meteorites to planetesimallike parent bodies. • However, the small meteorites in the solar system cannot be fragments of the planetesimals that formed the planets. – They would have been swept up by the planets in only a billion years or less. – They could not have survived for 4.6 billion years. ...
... meteorites to planetesimallike parent bodies. • However, the small meteorites in the solar system cannot be fragments of the planetesimals that formed the planets. – They would have been swept up by the planets in only a billion years or less. – They could not have survived for 4.6 billion years. ...
Untitled - NMSU Astronomy
... The last subject we want to discuss is graphing data, and the equation of a line. You probably learned in high school about making graphs. Astronomers frequently use graphs to plot data. You have probably seen all sorts of graphs, such as the plot of the performance of the stock market shown in the ...
... The last subject we want to discuss is graphing data, and the equation of a line. You probably learned in high school about making graphs. Astronomers frequently use graphs to plot data. You have probably seen all sorts of graphs, such as the plot of the performance of the stock market shown in the ...
Solar Math - GLORIA Project
... with problems and examples demonstrating its applications in everyday life. Space Math offers math applications through one of the strongest motivators-Space. Technology makes it possible for students to experience the value of math, instead of just reading about it. Technology is essential to mathe ...
... with problems and examples demonstrating its applications in everyday life. Space Math offers math applications through one of the strongest motivators-Space. Technology makes it possible for students to experience the value of math, instead of just reading about it. Technology is essential to mathe ...
SPIRAL STRUCTURE IN THE OUTER GALACTIC
... According to the age and the places where they are located, clusters present a variety of challenges in deriving their intrinsic parameters. In the case of very young clusters, they are normally close to the Galactic plane where interstellar absorption and crowded stellar fields make membership assi ...
... According to the age and the places where they are located, clusters present a variety of challenges in deriving their intrinsic parameters. In the case of very young clusters, they are normally close to the Galactic plane where interstellar absorption and crowded stellar fields make membership assi ...
PDF only - at www.arxiv.org.
... We live in a highly dynamic Universe. Small density fluctuations after the Big Bang grew into larger gravitational potential wells. Within the wells dark matter decoupled from gaseous matter, the latter condensed and formed the first stars and galaxies. These first galax ...
... We live in a highly dynamic Universe. Small density fluctuations after the Big Bang grew into larger gravitational potential wells. Within the wells dark matter decoupled from gaseous matter, the latter condensed and formed the first stars and galaxies. These first galax ...
Hot subdwarf stars-galactic orbits and distribution perpendicular to
... of subdwarf stars and their spatial distribution. Old stars will more likely be distributed in a thicker disk, due to the heating up of their average kinematics through interactions with other stars. Young stars, on the other hand, are rather moving inside the thin gaseous galactic disk where they o ...
... of subdwarf stars and their spatial distribution. Old stars will more likely be distributed in a thicker disk, due to the heating up of their average kinematics through interactions with other stars. Young stars, on the other hand, are rather moving inside the thin gaseous galactic disk where they o ...
Planetary Nebula
... remarkable example of a star going through death throes just as it dramatically transforms itself from a normal red giant star into a planetary nebula. This process happens so quickly that such objects are quite rare, even though astronomers believe that most stars like the Sun will eventually go th ...
... remarkable example of a star going through death throes just as it dramatically transforms itself from a normal red giant star into a planetary nebula. This process happens so quickly that such objects are quite rare, even though astronomers believe that most stars like the Sun will eventually go th ...
The Role of Radioactive Isotopes in Astrophysics
... to change only slowly. The subscript M> characterizes stars too massive to become white dwarfs. For those large-mass stars Hoyle et al. (1954) predicted that collapse of the final central evolved core is inevitable. For those massive stars Hoyle’s equation expresses the rate of ejection of new prima ...
... to change only slowly. The subscript M> characterizes stars too massive to become white dwarfs. For those large-mass stars Hoyle et al. (1954) predicted that collapse of the final central evolved core is inevitable. For those massive stars Hoyle’s equation expresses the rate of ejection of new prima ...
Who Built the Moon?
... ‘nature’ – caused them to exist; or because they were manufactured by human hand. However ...
... ‘nature’ – caused them to exist; or because they were manufactured by human hand. However ...
suggested
... space between the stars, to comets, to solar systems. I will try to present an overview of our current knowledge of the dust which brings many related astrophysical problems to the fore. Where and how small particles form and grow and evolve in the space between the stars, involve interactions betwe ...
... space between the stars, to comets, to solar systems. I will try to present an overview of our current knowledge of the dust which brings many related astrophysical problems to the fore. Where and how small particles form and grow and evolve in the space between the stars, involve interactions betwe ...
isaac newton`s historia cometarum and the quest for elliptical orbits
... by Newton on 9 March. It moved away from the Sun along an apparent track quite different from the approach. Flamsteed and Newton disagreed sharply as to whether the appearances were of one comet or two different ones. Newton knew little about the November appearances before receiving in midFebruary ...
... by Newton on 9 March. It moved away from the Sun along an apparent track quite different from the approach. Flamsteed and Newton disagreed sharply as to whether the appearances were of one comet or two different ones. Newton knew little about the November appearances before receiving in midFebruary ...
SOHO`s Frequently Asked Questions
... important nuclear reactions are taking place. It occupies the innermost quarter or so of the Sun's radius. Here, the temperature is 15 million Kelvin (or 27 million degrees Fahrenheit) and the density is 13 times greater than lead. Energy radiates from the core to about 80% of the way to the surface ...
... important nuclear reactions are taking place. It occupies the innermost quarter or so of the Sun's radius. Here, the temperature is 15 million Kelvin (or 27 million degrees Fahrenheit) and the density is 13 times greater than lead. Energy radiates from the core to about 80% of the way to the surface ...
Magnetic cycles of Sun-like stars with different levels of coronal and
... The most sensitive indicator of the chromospheric activity (CA) is the Mount Wilson S - index (SHK ) - the ratio of the core of the CaII H&K lines to the nearby continuum (Vaugan & Preston 1980). Now the CaII H&K emission was established as the main indicator of CA in lower main sequence stars. The ...
... The most sensitive indicator of the chromospheric activity (CA) is the Mount Wilson S - index (SHK ) - the ratio of the core of the CaII H&K lines to the nearby continuum (Vaugan & Preston 1980). Now the CaII H&K emission was established as the main indicator of CA in lower main sequence stars. The ...
ASTR 1010 - Sommers-Bausch Observatory
... You are expected to attend all lab sessions. The lab exercises can only be done using the equipment and facilities in the SBO classroom. Therefore, if you do not attend the daytime lab sessions, you cannot complete those experiments and cannot get credit. The observational exercises can only be done ...
... You are expected to attend all lab sessions. The lab exercises can only be done using the equipment and facilities in the SBO classroom. Therefore, if you do not attend the daytime lab sessions, you cannot complete those experiments and cannot get credit. The observational exercises can only be done ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.