Deriving the Isoradius Lines (optional, mathematical
... An actual HR Diagram is provided in the upper right panel with an active location indicated by a red x. This active location can be dragged around the diagram. The options panel allows you to control the variables plotted on the x-axis: (temperature, BV, or spectral type) and those plotted on the y- ...
... An actual HR Diagram is provided in the upper right panel with an active location indicated by a red x. This active location can be dragged around the diagram. The options panel allows you to control the variables plotted on the x-axis: (temperature, BV, or spectral type) and those plotted on the y- ...
PowerPoint
... a) Clouds fragment into smaller objects, forming many stars at one time. b) One star forms; other matter goes into planets, moons, asteroids, & comets. c) Clouds rotate & throw off mass until only enough is left to form one star. ...
... a) Clouds fragment into smaller objects, forming many stars at one time. b) One star forms; other matter goes into planets, moons, asteroids, & comets. c) Clouds rotate & throw off mass until only enough is left to form one star. ...
... system. We confirm the slight decrease in the separation AC, as well as the increase shown by AE. We find, however, that the separation AB also shows a slight but definite increase, a result that APW considered marginal. Another system showing relative motion of two components is ADS 2843. Figure 1 ...
Standing in Awe - Auckland Astronomical Society
... North-east of beta and 1° north of delta lies our next target, NGC 5812, a bright, small, round elliptical galaxy with a brighter central region. Moving 3.8° south and slightly east of beta brings us to NGC 5915 and 5916. The western most galaxy NGC 5915 is the brighter, a face-on barred spiral that ...
... North-east of beta and 1° north of delta lies our next target, NGC 5812, a bright, small, round elliptical galaxy with a brighter central region. Moving 3.8° south and slightly east of beta brings us to NGC 5915 and 5916. The western most galaxy NGC 5915 is the brighter, a face-on barred spiral that ...
Astro-MilkyWay
... 5. What fundamental principle did Shapley use to calibrate the period-luminosity relationship for Cepheid variable stars? a. Light intensity falls off with the inverse square of distance. b. Stars that appear brighter are on average closer to Earth. c. Large pulsating objects have longer periods tha ...
... 5. What fundamental principle did Shapley use to calibrate the period-luminosity relationship for Cepheid variable stars? a. Light intensity falls off with the inverse square of distance. b. Stars that appear brighter are on average closer to Earth. c. Large pulsating objects have longer periods tha ...
ASTRO-114--Lecture 37-
... background behind an object you’re looking at and so you can tell how far away an object is by how much parallax you see with it from one eye to the other. In other words, looking at your thumb, shifting from one eye to the other, you see a shift. You can then tell your thumb is fairly close. Now, l ...
... background behind an object you’re looking at and so you can tell how far away an object is by how much parallax you see with it from one eye to the other. In other words, looking at your thumb, shifting from one eye to the other, you see a shift. You can then tell your thumb is fairly close. Now, l ...
HD 140283: A Star in the Solar Neighborhood that Formed Shortly
... role in astronomical history as the first high-velocity star recognized—a century ago—to have an anomalously early spectral type for its low luminosity (Adams 1912), making it a so-called “A-type subdwarf.” Moreover, HD 140283 (along with another similar subdwarf, HD 19445) was subsequently the firs ...
... role in astronomical history as the first high-velocity star recognized—a century ago—to have an anomalously early spectral type for its low luminosity (Adams 1912), making it a so-called “A-type subdwarf.” Moreover, HD 140283 (along with another similar subdwarf, HD 19445) was subsequently the firs ...
The Sun and Stars 4.1 Energy formation and layers of the Sun 4.2
... Prominences and Solar Flares. It is important for us to follow the Sunspot cycle to know when there is going to be an increase in Sunspots, because they cause Solar Flares and Prominences. Although the Earth’s magnetic field can deflect or pull in much of the energy that is carried in a solar flare, ...
... Prominences and Solar Flares. It is important for us to follow the Sunspot cycle to know when there is going to be an increase in Sunspots, because they cause Solar Flares and Prominences. Although the Earth’s magnetic field can deflect or pull in much of the energy that is carried in a solar flare, ...
Ecosystems, from life, to the Earth, to the Galaxy
... interacting and evolving in a manner determined by the totality of their biological and physical environment. Driven by an energy source, typically the Sun, material is re-cycled and the system is in a self-regulating, non-equilibrium state. Ecosystems are not just confined to geographical regions o ...
... interacting and evolving in a manner determined by the totality of their biological and physical environment. Driven by an energy source, typically the Sun, material is re-cycled and the system is in a self-regulating, non-equilibrium state. Ecosystems are not just confined to geographical regions o ...
Galaxies (and stars) in the far infrared: results from the AKARI All
... Supply of metals to the interstellar space II: final life stages of stars The death of light stars : planetary nebulae (PNe) Stars with masses similar to the Sun run out the hydrogen in the core, change their equilibrium structure and expand, and become cool huge stars (red giant branch stars: RGBs ...
... Supply of metals to the interstellar space II: final life stages of stars The death of light stars : planetary nebulae (PNe) Stars with masses similar to the Sun run out the hydrogen in the core, change their equilibrium structure and expand, and become cool huge stars (red giant branch stars: RGBs ...
The Parallax Activity: Measuring the Distances to
... longer be used to find the distance to a star with an error of less than 10% using ground-based measurements. Other techniques must be used (see Extension Activity D) beyond 200 light years. 4. The Hipparcos satellite (1989-93) measured the positions of ...
... longer be used to find the distance to a star with an error of less than 10% using ground-based measurements. Other techniques must be used (see Extension Activity D) beyond 200 light years. 4. The Hipparcos satellite (1989-93) measured the positions of ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.