Great Migrations & other natural history tales
... Accretion disks are often found in close, interacting pairs of stars, such as the cataclysmic variables (CVs). One star, originally more massive, evolves to a compact companion: a white dwarf or perhaps a neutron star (pulsar) or a black hole. The other, originally less massive, star bloats toward ...
... Accretion disks are often found in close, interacting pairs of stars, such as the cataclysmic variables (CVs). One star, originally more massive, evolves to a compact companion: a white dwarf or perhaps a neutron star (pulsar) or a black hole. The other, originally less massive, star bloats toward ...
Today`s Powerpoint
... Solar System Rotation Curve: when almost all mass at center, velocity decreases with radius ("Keplerian") ...
... Solar System Rotation Curve: when almost all mass at center, velocity decreases with radius ("Keplerian") ...
Slide 1
... Magnitude is the degree of brightness of a star. In 1856, British astronomer Norman Pogson proposed a quantitative scale of stellar magnitudes, which was adopted by the astronomical community. Each increment in magnitude corresponds to an increase in the amount of energy by 2.512, approximately. A f ...
... Magnitude is the degree of brightness of a star. In 1856, British astronomer Norman Pogson proposed a quantitative scale of stellar magnitudes, which was adopted by the astronomical community. Each increment in magnitude corresponds to an increase in the amount of energy by 2.512, approximately. A f ...
slides - Indico
... Require large samples of, in particular, r-process-enhanced, metal-poor stars in order to place constraints on the nature of the r-process, its site(s), examination of possible variation in abundance patterns from star to star, and of course… ...
... Require large samples of, in particular, r-process-enhanced, metal-poor stars in order to place constraints on the nature of the r-process, its site(s), examination of possible variation in abundance patterns from star to star, and of course… ...
GCSE Questions on Circular Motion, Satellites
... them? The bigger the masses (of the dust and gases) the bigger the force of gravity (between them). (1 mark) (ii) What is the relationship between the distance apart of the dust and gas in the cloud in Stage 2 and the force of gravity between them? The greater the distance (between the dust and gase ...
... them? The bigger the masses (of the dust and gases) the bigger the force of gravity (between them). (1 mark) (ii) What is the relationship between the distance apart of the dust and gas in the cloud in Stage 2 and the force of gravity between them? The greater the distance (between the dust and gase ...
1 Exoplanets 2 Types of Exoplanets
... This is the detection method utilized by the Kepler Space Telescope where it looks for exoplanets crossing in front of (transiting) the host star. Kepler picks a particular field of view in the sky and selects around a hundred thousand stars to observe over a given time period. It then measures how ...
... This is the detection method utilized by the Kepler Space Telescope where it looks for exoplanets crossing in front of (transiting) the host star. Kepler picks a particular field of view in the sky and selects around a hundred thousand stars to observe over a given time period. It then measures how ...
doc - Pocket Stars
... are performed for proper motions and parallax. Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database. DE405 is JPL’s latest planetary ephemeris with correction for both nutations and librations. DE405 uses the J2000 International Celestial Reference Frame (ICRF). The portion ...
... are performed for proper motions and parallax. Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database. DE405 is JPL’s latest planetary ephemeris with correction for both nutations and librations. DE405 uses the J2000 International Celestial Reference Frame (ICRF). The portion ...
Exploring the Stars in Orion – Light Year Madness!
... Next to the Big Dipper (Ursa Major) and Scorpius, the Orion is the most widely recognized of all the 89 constellations in the sky. It is also one of the oldest known to humans. The Ancient Egyptians called it Osiris as long ago as 2000 BC! The brilliant stars that make up this rectangular star patte ...
... Next to the Big Dipper (Ursa Major) and Scorpius, the Orion is the most widely recognized of all the 89 constellations in the sky. It is also one of the oldest known to humans. The Ancient Egyptians called it Osiris as long ago as 2000 BC! The brilliant stars that make up this rectangular star patte ...
ph507lecnote06
... incident upon it - it is completely black. To be in perfect thermal equilibrium, however, such a body must radiate energy at exactly the same rate that it absorbs energy; otherwise, the body will heat up or cool down (its temperature will change). Ideally, a blackbody is a perfectly insulated enclos ...
... incident upon it - it is completely black. To be in perfect thermal equilibrium, however, such a body must radiate energy at exactly the same rate that it absorbs energy; otherwise, the body will heat up or cool down (its temperature will change). Ideally, a blackbody is a perfectly insulated enclos ...
Small Wonders: Ursa Minor
... degrees declination (well 89 degrees 15 minutes anyway) and Alderamin is at 62.5 degrees declination. In 5000 years or so, Alderamin will nearly be at 90 degrees declination while Polaris will have drifted away. Polaris will continue to move closer to the pole until sometime in 2102 when it reaches ...
... degrees declination (well 89 degrees 15 minutes anyway) and Alderamin is at 62.5 degrees declination. In 5000 years or so, Alderamin will nearly be at 90 degrees declination while Polaris will have drifted away. Polaris will continue to move closer to the pole until sometime in 2102 when it reaches ...
1 - People Server at UNCW
... Try to answer as many problems as possible. Provide as much information as possible. Show sufficient work or rationale for full credit. Remember that some problems may require less work than brute force methods. If you are stuck, or running out of time, indicate as completely as possible, the method ...
... Try to answer as many problems as possible. Provide as much information as possible. Show sufficient work or rationale for full credit. Remember that some problems may require less work than brute force methods. If you are stuck, or running out of time, indicate as completely as possible, the method ...
Lesson 1 - The DK Foundation
... Magnitude: basic measurement used to classify stars by their apparent brightness; a measurement which does not take into account the star’s size or distance from Earth. The greater the brightness, the lower the magnitude. The brightest stars therefore are of the first magnitude and are classified as ...
... Magnitude: basic measurement used to classify stars by their apparent brightness; a measurement which does not take into account the star’s size or distance from Earth. The greater the brightness, the lower the magnitude. The brightest stars therefore are of the first magnitude and are classified as ...
Study Guide Presentation
... ◦ How it works is explained by the__________________ Effect ◦ Evidence in support of ________________ Law ◦ Important for two reasons: ◦ Evidence that the universe is: ______________________________ and it is going faster/slower ...
... ◦ How it works is explained by the__________________ Effect ◦ Evidence in support of ________________ Law ◦ Important for two reasons: ◦ Evidence that the universe is: ______________________________ and it is going faster/slower ...
PS119 maths review
... to make progress is usually quite modest. The mathematics you need for this program will be reviewed in the first half of this lab. The second part of the lab introduces you to the elements of mathematical reasoning. Enrico Fermi (who built the first nuclear reactor in the world at this university) ...
... to make progress is usually quite modest. The mathematics you need for this program will be reviewed in the first half of this lab. The second part of the lab introduces you to the elements of mathematical reasoning. Enrico Fermi (who built the first nuclear reactor in the world at this university) ...
Solar
... • The Sun has enough fuel to last for another 5 billion years • At the end of it’s life it will have used up all its hydrogen • When there is no longer any source of heat to balance gravity its core will then collapse ...
... • The Sun has enough fuel to last for another 5 billion years • At the end of it’s life it will have used up all its hydrogen • When there is no longer any source of heat to balance gravity its core will then collapse ...
Quantum effects in astrophysics
... levels of ordinary hydrogen by about one part in 2mP / me 3700 . In the visible part of the spectrum, this corresponds to a line shift on the order of 1.5 angstroms. This shift could be easily detected, yet, for many years, no deuterium was ever detected in any astronomical object. In contrast, th ...
... levels of ordinary hydrogen by about one part in 2mP / me 3700 . In the visible part of the spectrum, this corresponds to a line shift on the order of 1.5 angstroms. This shift could be easily detected, yet, for many years, no deuterium was ever detected in any astronomical object. In contrast, th ...
What units are used in astronomical photometry?
... Astrometry: Technological advances (including the Hubble Space Telescope) have improved parallax accuracy to 0.001” within a few years. Before 1990, fewer than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 10 12 stars in our Galaxy. Space observations mad ...
... Astrometry: Technological advances (including the Hubble Space Telescope) have improved parallax accuracy to 0.001” within a few years. Before 1990, fewer than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 10 12 stars in our Galaxy. Space observations mad ...
APSU_1000_35 Liberal Arts Univ. Life
... Releases 4.3x10-12 Joules per helium atom produced The Sun converts 600,000,000 tonnes of H into 596,000,000 tonnes of He every second! The difference in mass is the energy produced according to E = mc2. This is only a 0.67% efficient conversion! The Sun has enough hydrogen in its’ core to last anot ...
... Releases 4.3x10-12 Joules per helium atom produced The Sun converts 600,000,000 tonnes of H into 596,000,000 tonnes of He every second! The difference in mass is the energy produced according to E = mc2. This is only a 0.67% efficient conversion! The Sun has enough hydrogen in its’ core to last anot ...
Student Number………………………………
... 27 Two ice skaters are skating towards each other. One is travelling south at a speed of 7.2 ms-1 and has a mass of 80 kg. the other is travelling north at a speed of 3.2 ms-1 and has a mass of 54 kg. They collide and are entangled together such that they move off as one. Calculate the speed and di ...
... 27 Two ice skaters are skating towards each other. One is travelling south at a speed of 7.2 ms-1 and has a mass of 80 kg. the other is travelling north at a speed of 3.2 ms-1 and has a mass of 54 kg. They collide and are entangled together such that they move off as one. Calculate the speed and di ...
IK Pegasi
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.