Hubble Diagram Instruction Sheet
... A. Discussion question: You may have noticed that all your redshift figures are positive. What would it mean if your redshift were negative? Calculating Distances Measuring distances in space is a daunting task. One method of measuring distances is to use an object with a known absolute magnitude (M ...
... A. Discussion question: You may have noticed that all your redshift figures are positive. What would it mean if your redshift were negative? Calculating Distances Measuring distances in space is a daunting task. One method of measuring distances is to use an object with a known absolute magnitude (M ...
S11 PHY114 Problem Set 3
... star where located at the center of the star. Newton knew this fact, but he proved it by a much more complicated method: Gauss found this simpler proof many decades later. (d) The gravitational field of a non-spherical star is not the same as that of a point mass at its center. The argument above bre ...
... star where located at the center of the star. Newton knew this fact, but he proved it by a much more complicated method: Gauss found this simpler proof many decades later. (d) The gravitational field of a non-spherical star is not the same as that of a point mass at its center. The argument above bre ...
The Galactic Halo The Galactic Disk Height and Thickness of MW
... " To find the center of the Galaxy, Shapley measured the distance to each cluster using RR Lyrae stars and produced a three dimensional plot of the clusters’ positions. The center of the Galaxy was then identified by the average position of the clusters. " We now know that Shapley’s distance to the ...
... " To find the center of the Galaxy, Shapley measured the distance to each cluster using RR Lyrae stars and produced a three dimensional plot of the clusters’ positions. The center of the Galaxy was then identified by the average position of the clusters. " We now know that Shapley’s distance to the ...
`Magnificent Desolation` transcript
... American astronaut Neil Armstrong spoke these famous words when he made history on July 20 1969, as the first human being to set foot on the Moon. The moon is our nearest neighbour in space; it is our only natural satellite and has been known since prehistoric times. At three and a half thousand ...
... American astronaut Neil Armstrong spoke these famous words when he made history on July 20 1969, as the first human being to set foot on the Moon. The moon is our nearest neighbour in space; it is our only natural satellite and has been known since prehistoric times. At three and a half thousand ...
Instructor Solution Manual
... 13.13. Model: Model Jupiter as a spherical mass and the object as a point particle. The object and Jupiter form an isolated system, so mechanical energy is conserved. The minimum launch speed for escape, which is called the escape speed, allows an object to escape to an infinite distance from Jupite ...
... 13.13. Model: Model Jupiter as a spherical mass and the object as a point particle. The object and Jupiter form an isolated system, so mechanical energy is conserved. The minimum launch speed for escape, which is called the escape speed, allows an object to escape to an infinite distance from Jupite ...
Introduction to Astronomy
... are discovered; the point is to discover them.” Galileo, an Italian born 21 years after the death of Copernicus, studied medicine but also had a keen interest in mathematics and astronomy. Although he is best known for his ideas on astronomy, he also discovered the secrets of the pendulum, later the ...
... are discovered; the point is to discover them.” Galileo, an Italian born 21 years after the death of Copernicus, studied medicine but also had a keen interest in mathematics and astronomy. Although he is best known for his ideas on astronomy, he also discovered the secrets of the pendulum, later the ...
Type Ia Supernovae as distance indicators
... •What makes type Ia supernovae good distance indicators? –Very common • Average-mass progenitor ...
... •What makes type Ia supernovae good distance indicators? –Very common • Average-mass progenitor ...
Extragalactic Astrophysics 1 AA 2011-2012 Prof. LA Antonelli
... for open and globular clusters more precise distance determinations are possible, because all the stars of the same cluster have about the same age, chemical composition, and distance. optimal agreement of isochrones with HR diagram can be found ...
... for open and globular clusters more precise distance determinations are possible, because all the stars of the same cluster have about the same age, chemical composition, and distance. optimal agreement of isochrones with HR diagram can be found ...
Cosmic View The Universe in 40 Jumps
... 1. A group of children makes its own series of drawings, or if possible threedimensional models, with dimensions of, say, 50 centimeters or more, starting from familiar surroundings. Certain objects are first drawn on the scale 1:10, together with part of the room in which they are situated. In the ...
... 1. A group of children makes its own series of drawings, or if possible threedimensional models, with dimensions of, say, 50 centimeters or more, starting from familiar surroundings. Certain objects are first drawn on the scale 1:10, together with part of the room in which they are situated. In the ...
1957_boeke_cosmic view
... 1. A group of children makes its own series of drawings, or if possible threedimensional models, with dimensions of, say, 50 centimeters or more, starting from familiar surroundings. Certain objects are first drawn on the scale 1:10, together with part of the room in which they are situated. In the ...
... 1. A group of children makes its own series of drawings, or if possible threedimensional models, with dimensions of, say, 50 centimeters or more, starting from familiar surroundings. Certain objects are first drawn on the scale 1:10, together with part of the room in which they are situated. In the ...
The Accurate Barycentric Corrections for the Detection of Extrasolar
... To compute radial–velocity and time corrections I use positions and velocities of the Earth obtained from the JPL Planetary and Lunar Ephemerides DE405 [Standish, 1998]. It is currently the JPL’s latest ephemeris. For the given Julian Ephemeris Date one obtains positions and velocities by differenti ...
... To compute radial–velocity and time corrections I use positions and velocities of the Earth obtained from the JPL Planetary and Lunar Ephemerides DE405 [Standish, 1998]. It is currently the JPL’s latest ephemeris. For the given Julian Ephemeris Date one obtains positions and velocities by differenti ...
Astronomy and Stonehenge
... points, from pre-Columbian Mesoamerica to Europe in the Middle Ages (Kohler 1989). Even if directions were conceived as point-azimuths, those directions that we consider of special significance, such as the cardinal directions, are not necessarily exactly reflected in other conceptual systems: the C ...
... points, from pre-Columbian Mesoamerica to Europe in the Middle Ages (Kohler 1989). Even if directions were conceived as point-azimuths, those directions that we consider of special significance, such as the cardinal directions, are not necessarily exactly reflected in other conceptual systems: the C ...
Artificial comets
... The many documents on and pictures of comets are proof that people have long been fascinated by comets. The word “comet” (from the Greek κομήτης) means hairy or tailed star. Comets were thought to be heralds of important things to come. It was thought, for example, that King Harold’s defeat and deat ...
... The many documents on and pictures of comets are proof that people have long been fascinated by comets. The word “comet” (from the Greek κομήτης) means hairy or tailed star. Comets were thought to be heralds of important things to come. It was thought, for example, that King Harold’s defeat and deat ...
Structure of Neutron Stars
... For example, an interesting estimate was obtained for GX 301-2. The progenitor mass is >50 solar masses. On the other hand, for several other systems with both NSs and BHs progenitor masses a smaller: from 20 up to 50. Finally, for the BH binary LMC X-3 the progenitor mass is estimated as >60 solar. ...
... For example, an interesting estimate was obtained for GX 301-2. The progenitor mass is >50 solar masses. On the other hand, for several other systems with both NSs and BHs progenitor masses a smaller: from 20 up to 50. Finally, for the BH binary LMC X-3 the progenitor mass is estimated as >60 solar. ...
Powerpoint slides - UCLA - Earth, Planetary, and Space Sciences
... plasma jet which is guided by the star’s magnetic field. The white zones are gas and dust, being illuminated from inside by the young star. The dark central zone is where the dust is so optically thick that the light is not being transmitted. F.Nimmo ESS298 Fall 04 ...
... plasma jet which is guided by the star’s magnetic field. The white zones are gas and dust, being illuminated from inside by the young star. The dark central zone is where the dust is so optically thick that the light is not being transmitted. F.Nimmo ESS298 Fall 04 ...
Laboratory A
... 10. On the scale drawing of the NPOI site, 1 in is 140 ft. What is this in centimeters to meters? 2.54 cm to 42.672 m, or 1 cm to 16.8 m 11. On the scale drawing of the NPOI site, 1 in is 140 ft. What are the dimensions of the Beam Combing Building on the drawing in inches? length = 1,125/3,556 in, ...
... 10. On the scale drawing of the NPOI site, 1 in is 140 ft. What is this in centimeters to meters? 2.54 cm to 42.672 m, or 1 cm to 16.8 m 11. On the scale drawing of the NPOI site, 1 in is 140 ft. What are the dimensions of the Beam Combing Building on the drawing in inches? length = 1,125/3,556 in, ...
Slide 1
... One input to models is ratio of mass fraction of H ( = X) to mass fraction of heavy elements (= Z) Mass fraction of He ( = Y) follows from X + Y + Z = 1 Z is the sum of the mass fraction of all elements heavier than He (the “metals”) Z is dominated by C, N, O, Ne (CNO ~66%, CNONe ~75%) Ratio of Z/X ...
... One input to models is ratio of mass fraction of H ( = X) to mass fraction of heavy elements (= Z) Mass fraction of He ( = Y) follows from X + Y + Z = 1 Z is the sum of the mass fraction of all elements heavier than He (the “metals”) Z is dominated by C, N, O, Ne (CNO ~66%, CNONe ~75%) Ratio of Z/X ...
1 solar and stellar abundances of the elements
... quantitative analysis of the sun. In spite of the poor observational data then available and the rather primitive theory of stellar spectral line formation, his efforts were remarkably successful. For some elements we call do no better than he did, because of our lack of knowledge (even to this day) ...
... quantitative analysis of the sun. In spite of the poor observational data then available and the rather primitive theory of stellar spectral line formation, his efforts were remarkably successful. For some elements we call do no better than he did, because of our lack of knowledge (even to this day) ...
letters - MIT Kavli Institute for Astrophysics and Space Research
... However, that we are seeing the same Ne/O ratio in a wide variety of stars sampling a large range of different coronal activity levels indicates that there is no significant fractionation between O and Ne in disk-integrated light from stellar coronae. We thus conclude that the results represent the ...
... However, that we are seeing the same Ne/O ratio in a wide variety of stars sampling a large range of different coronal activity levels indicates that there is no significant fractionation between O and Ne in disk-integrated light from stellar coronae. We thus conclude that the results represent the ...
Introduction Introduction to to Astrophysics Astrophysics
... children to centenarians. For others it is their vocation and becomes their profession. The word ‘astronomy’ itself derives from the Greek aster meaning ‘star’, and nomos meaning ‘law’, and originally referred to the mathematical laws governing the motion of the stars and planets. Astronomy essentia ...
... children to centenarians. For others it is their vocation and becomes their profession. The word ‘astronomy’ itself derives from the Greek aster meaning ‘star’, and nomos meaning ‘law’, and originally referred to the mathematical laws governing the motion of the stars and planets. Astronomy essentia ...
TOOLS IN ASTRONOMY SPECTROSCOPY
... 1. Know that starlight is often broken up into component wavelengths with diffraction gratings to produce stellar spectra. 2. Understand how stellar spectra are classified as A, B, C, D, E and so on, based on prominent characteristics. 3. Understand how stellar spectra are related to composition and ...
... 1. Know that starlight is often broken up into component wavelengths with diffraction gratings to produce stellar spectra. 2. Understand how stellar spectra are classified as A, B, C, D, E and so on, based on prominent characteristics. 3. Understand how stellar spectra are related to composition and ...
click here
... The diagram • Hot, massive stars end up in the upper left; cool, low mass stars end up in the lower right. • In addition, there are poorly populated areas. One, in the lower left, is populated by hot, very tiny stars (white dwarfs). Another, in the upper right, is populated by giant stars on the gi ...
... The diagram • Hot, massive stars end up in the upper left; cool, low mass stars end up in the lower right. • In addition, there are poorly populated areas. One, in the lower left, is populated by hot, very tiny stars (white dwarfs). Another, in the upper right, is populated by giant stars on the gi ...