Problem Set 2
... ellipse’s semi-major axis. What is the distance d to the supernova? Finally, at its brightest, SN1987A had an apparent magnitude of mV ≈ 3 mag. What was its peak absolute magnitude? Given that the Sun has an absolute magnitude of MV = 4.78 mag in the V band, what was its peak luminosity (in solar u ...
... ellipse’s semi-major axis. What is the distance d to the supernova? Finally, at its brightest, SN1987A had an apparent magnitude of mV ≈ 3 mag. What was its peak absolute magnitude? Given that the Sun has an absolute magnitude of MV = 4.78 mag in the V band, what was its peak luminosity (in solar u ...
Famous Constellations
... • http://media-1.web.britannica.com/eb-media/31/148331-004-2F6DE950.jpg ...
... • http://media-1.web.britannica.com/eb-media/31/148331-004-2F6DE950.jpg ...
No Slide Title
... latitude from the CE, i.e., the declination of the zenith is your latitude. Any vertical line on your SC-1 (north-south) is a meridian. Approximately one half of the stars on the SC-1 are visible at any given time (12 hours of RA). ...
... latitude from the CE, i.e., the declination of the zenith is your latitude. Any vertical line on your SC-1 (north-south) is a meridian. Approximately one half of the stars on the SC-1 are visible at any given time (12 hours of RA). ...
CP2: KUPKA et al.: Observational signatures of atmospheric velocity
... One of us (FK) has been developing new models of convection based on equations describing local mean values of moments of the distributions of velocity, temperature, density, pressure, etc. These model are reaching the point where it is useful to compare them with velocity fields observed through th ...
... One of us (FK) has been developing new models of convection based on equations describing local mean values of moments of the distributions of velocity, temperature, density, pressure, etc. These model are reaching the point where it is useful to compare them with velocity fields observed through th ...
Astrophysics notes
... define the term ‘sensitivity’ of a telescope as the light-gathering power of the telescope (directly proportional to the square of the diameter of the objective) define the term parallax as the apparent shift in position of a close object against a distant background due to a change in position of t ...
... define the term ‘sensitivity’ of a telescope as the light-gathering power of the telescope (directly proportional to the square of the diameter of the objective) define the term parallax as the apparent shift in position of a close object against a distant background due to a change in position of t ...
The correct answers are written in bold, italic and underlined. The
... • very long, billions of years, because it is a fixed shell of interstellar matter being illuminated by a white dwarf star whose age is this long. • very short, about 100 years, because it represents the rapidly expanding shell of an exploding star, or supernova. • relatively short, about 50,000 yea ...
... • very long, billions of years, because it is a fixed shell of interstellar matter being illuminated by a white dwarf star whose age is this long. • very short, about 100 years, because it represents the rapidly expanding shell of an exploding star, or supernova. • relatively short, about 50,000 yea ...
Chapter 5 Notes
... 1. Earth galaxy is Milky Way which is part of a galaxy cluster named the ______ _____. 2. _______ _______ - spiral arms wind out from inner section; some have barred spirals with stars and gas in a central bar 3. _______ _________ - large, three-dimensional ellipses; most common type ...
... 1. Earth galaxy is Milky Way which is part of a galaxy cluster named the ______ _____. 2. _______ _______ - spiral arms wind out from inner section; some have barred spirals with stars and gas in a central bar 3. _______ _________ - large, three-dimensional ellipses; most common type ...
Review for Midterm Exam 2
... Use the graph at the right to determine which of the following best describes how Star A would appear as compared with Star B. A. Star A would appear more red than Star B. B. Both stars would appear more red than blue. C. Both stars would appear more blue than red. D. Star A would appear more blue ...
... Use the graph at the right to determine which of the following best describes how Star A would appear as compared with Star B. A. Star A would appear more red than Star B. B. Both stars would appear more red than blue. C. Both stars would appear more blue than red. D. Star A would appear more blue ...
Nearby Stars - How far away is it
... We then cover some more stars including: Pollux, Arcturus, GJ1214, Capella, and Castor. Having reached the limits of ground based telescopes to measure parallax, we discuss the European Space Agency‟s Hipparcos satellite and the more distant stars it helped fined parallax for including: HD 189733, A ...
... We then cover some more stars including: Pollux, Arcturus, GJ1214, Capella, and Castor. Having reached the limits of ground based telescopes to measure parallax, we discuss the European Space Agency‟s Hipparcos satellite and the more distant stars it helped fined parallax for including: HD 189733, A ...
Document
... • As density increases, the force of gravity on the surface increases. • The greater the force, the higher the escape ...
... • As density increases, the force of gravity on the surface increases. • The greater the force, the higher the escape ...
Death of High Mass Stars
... galaxy (billions of stars) for a few days • Some of the energy creates elements heavier than iron. These elements are distributed to the rest of the galaxy. ...
... galaxy (billions of stars) for a few days • Some of the energy creates elements heavier than iron. These elements are distributed to the rest of the galaxy. ...
E3 – Stellar distances
... • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a light source of known ...
... • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a light source of known ...
A-105 Homework 1
... 18. (2 pts.) If the true distance to the center of our galaxy is found to be 7 kpc (instead of 8.5 kpc) and the orbital velocity of the sun is 220 km/s, what is the minimum mass of the galaxy? (Hints: Find the orbital period of the sun at 7 kpc, and then use Kepler’s 3rd law.) ...
... 18. (2 pts.) If the true distance to the center of our galaxy is found to be 7 kpc (instead of 8.5 kpc) and the orbital velocity of the sun is 220 km/s, what is the minimum mass of the galaxy? (Hints: Find the orbital period of the sun at 7 kpc, and then use Kepler’s 3rd law.) ...
answers2008_09_BC
... loses mass through stellar wind. Eventually all outer layers will be lost, forming a planetary nebula, and He fusion will stop; central carbon core will survive to radiate its stored heat as a white dwarf (bottom left of HRD) ...
... loses mass through stellar wind. Eventually all outer layers will be lost, forming a planetary nebula, and He fusion will stop; central carbon core will survive to radiate its stored heat as a white dwarf (bottom left of HRD) ...
Deep Space (PDF: 224k)
... form other elements of higher atomic number. When the positively charged nuclei of hydrogen (protons) are pushed close enough together, nuclear forces take over to bind them in a nucleus. The massive gravity of stars provides enough weight so that protons in the core of the star are pushed together ...
... form other elements of higher atomic number. When the positively charged nuclei of hydrogen (protons) are pushed close enough together, nuclear forces take over to bind them in a nucleus. The massive gravity of stars provides enough weight so that protons in the core of the star are pushed together ...
Chapter 2: The Sky
... Celestial Sphere • When we look at the sky, we see stars but have no actual clue as to how far away they are. Therefore it is as if they were all on a sphere out a long distance from us. This conceptual device is known as the celestial sphere. • Distances between objects then are measured in angle ...
... Celestial Sphere • When we look at the sky, we see stars but have no actual clue as to how far away they are. Therefore it is as if they were all on a sphere out a long distance from us. This conceptual device is known as the celestial sphere. • Distances between objects then are measured in angle ...
Part 2 - Aryabhat
... All stars shine but none do it like Sirius, the brightest star in the night sky. Aptly named, Sirius comes from the Greek word Seirius, meaning, "searing" or "scorching." Blazing at a visual magnitude of –1.42, it is twice as bright as any other star in our sky. Sirius resides in the constellation C ...
... All stars shine but none do it like Sirius, the brightest star in the night sky. Aptly named, Sirius comes from the Greek word Seirius, meaning, "searing" or "scorching." Blazing at a visual magnitude of –1.42, it is twice as bright as any other star in our sky. Sirius resides in the constellation C ...
2008F-ExtraSolarPlanets-Smith
... varied the mass of the planet to range from 1/300th the mass of Jupiter to ten times the mass of Jupiter. The data shows that fainter stars can be seen with planets of smaller mass. Analyzing this information using the center of mass and Kepler’s Law shows why this is true. As the mass of the planet ...
... varied the mass of the planet to range from 1/300th the mass of Jupiter to ten times the mass of Jupiter. The data shows that fainter stars can be seen with planets of smaller mass. Analyzing this information using the center of mass and Kepler’s Law shows why this is true. As the mass of the planet ...
Topic 6 Introduction
... for dispersing pre-processed elements into the interstellar medium for further processing during (new) star formation • SN are the death throes of massive stars – Typical kinetic energy release: 1044 J – Typical total energy release: 1046 J (100x that of the Sun for 10 billion years) – Temporari ...
... for dispersing pre-processed elements into the interstellar medium for further processing during (new) star formation • SN are the death throes of massive stars – Typical kinetic energy release: 1044 J – Typical total energy release: 1046 J (100x that of the Sun for 10 billion years) – Temporari ...
JimH This is Your Life - The Atlanta Astronomy Club
... around the White Dwarf core. Ring is Ionized and heated by the hot central core of WD. Called planetary nebula because look like a tiny planet in a small telescope. •The nebula expands at the ~ 35,000 to 70,000 miles/hour. ...
... around the White Dwarf core. Ring is Ionized and heated by the hot central core of WD. Called planetary nebula because look like a tiny planet in a small telescope. •The nebula expands at the ~ 35,000 to 70,000 miles/hour. ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.