AST 207 Test 3 23 November 2009
... e. “We are star dust.”Woodstock by Joni Mitchell. (1 pt.) Is this statement true for the hydrogen in our blood? Is this statement true for the iron in our blood? (2 pts.) Explain. f. ...
... e. “We are star dust.”Woodstock by Joni Mitchell. (1 pt.) Is this statement true for the hydrogen in our blood? Is this statement true for the iron in our blood? (2 pts.) Explain. f. ...
H-R Diagram Lab
... information about them. Together, they created a diagram on which they mapped stars by magnitude and spectral class. After the astronomers had completed graphing the stars, they noticed that several patterns appeared. First, they noticed that ninety per cent of the stars fell along a diagonal line f ...
... information about them. Together, they created a diagram on which they mapped stars by magnitude and spectral class. After the astronomers had completed graphing the stars, they noticed that several patterns appeared. First, they noticed that ninety per cent of the stars fell along a diagonal line f ...
Pulsars - Chabot College
... Essay Questions for the exam… (a) What is a pulsar? Where does it get its ...
... Essay Questions for the exam… (a) What is a pulsar? Where does it get its ...
Star Life Cycle Web Activity
... section only. Read this entire page. You may go to the other sections if you have time. An H-R diagram shows a wide array of stars plotted on a graph showing absolute magnitude (or luminosity) versus surface temperature (not core temperature). Notice most of the stars are in the main sequence, yet s ...
... section only. Read this entire page. You may go to the other sections if you have time. An H-R diagram shows a wide array of stars plotted on a graph showing absolute magnitude (or luminosity) versus surface temperature (not core temperature). Notice most of the stars are in the main sequence, yet s ...
A105 Stars and Galaxies
... hydrogen into helium in their cores •Massive main-sequence stars are hot (blue) and luminous •Less massive stars are cooler (yellow or red) and fainter ...
... hydrogen into helium in their cores •Massive main-sequence stars are hot (blue) and luminous •Less massive stars are cooler (yellow or red) and fainter ...
GEARS Workshop Monday - Georgia Southern University
... • Let’s think back to initial categories made of star image • Having made a few measurements now – let’s list the intrinsic properties of stars on the board together ...
... • Let’s think back to initial categories made of star image • Having made a few measurements now – let’s list the intrinsic properties of stars on the board together ...
Beyond Our Solar System
... In this figure, your field of view widens by a factor of 100, and you can see an area 1 mile in diameter. – The arrow points to the scene shown in the preceding photo. – People, trees, and sidewalks have vanished, but now you can see a college campus and the surrounding streets and houses. – The di ...
... In this figure, your field of view widens by a factor of 100, and you can see an area 1 mile in diameter. – The arrow points to the scene shown in the preceding photo. – People, trees, and sidewalks have vanished, but now you can see a college campus and the surrounding streets and houses. – The di ...
Outline2a
... material to spin rapidly. The centripetal force fights the collapse in the plane of rotation, but not at the poles. As a result, the material collapses into a disk. ...
... material to spin rapidly. The centripetal force fights the collapse in the plane of rotation, but not at the poles. As a result, the material collapses into a disk. ...
Spiral Galaxies - Astronomy Centre
... • Spiral disks are relatively blue due to light from hot, massive, young stars • Elliptical galaxies are relatively red due to the dominant population of older, lower-mass stars ...
... • Spiral disks are relatively blue due to light from hot, massive, young stars • Elliptical galaxies are relatively red due to the dominant population of older, lower-mass stars ...
In the icy near-vacuum of interstellar space are seething
... becomes appreciable only because of the great size of the clouds—some of them up to 100 light-years across. The screening effect is perhaps the most important function served by interstellar dust. Like an opaque filter placed between a heat lamp and a bowl of setting Jell-O, the dust blocks out ultr ...
... becomes appreciable only because of the great size of the clouds—some of them up to 100 light-years across. The screening effect is perhaps the most important function served by interstellar dust. Like an opaque filter placed between a heat lamp and a bowl of setting Jell-O, the dust blocks out ultr ...
Stars
... • Most average stars will blow away their outer atmospheres to form a planetary nebula (ionized gas emission) • Cores will remain behind and burn as a white dwarf until they cool down • What will be left is a dark ball of matter known as a black dwarf ...
... • Most average stars will blow away their outer atmospheres to form a planetary nebula (ionized gas emission) • Cores will remain behind and burn as a white dwarf until they cool down • What will be left is a dark ball of matter known as a black dwarf ...
Slide 1
... Q12: Create a grided count of galaxies with u-g>1 and r<21.5 over -50.1.
Q15: Provide a list of moving object ...
... Q12: Create a grided count of galaxies with u-g>1 and r<21.5 over -5
The Magnitude scale
... To factor out the distance effect in apparent magnitudes (m) we define the absolute magnitude M as - the magnitude a star would have if we put it at a standard distance of 10 pc. In terms of apparent luminosity l, and absolute luminosity L, we have, ...
... To factor out the distance effect in apparent magnitudes (m) we define the absolute magnitude M as - the magnitude a star would have if we put it at a standard distance of 10 pc. In terms of apparent luminosity l, and absolute luminosity L, we have, ...
Wien`s Law and Temperature
... 8. A more accurate way to determine the spectral class of a star is by looking at the absorption lines in the star and the general shape of the curve. Don’t panic, this is almost more of an art and it takes practice, so here we go. Open the program Graphical Analysis and then open the file for star ...
... 8. A more accurate way to determine the spectral class of a star is by looking at the absorption lines in the star and the general shape of the curve. Don’t panic, this is almost more of an art and it takes practice, so here we go. Open the program Graphical Analysis and then open the file for star ...
Measuring the masses of clusters
... are not obviously associated with galaxies. May have been heated as smaller galaxies (or clumps of galaxies) fell into the cluster –! In densest regions, gas may cool and sink toward the cluster center as a “cooling flow” –! Unlikely that all of it has escaped from galaxies, some must be around from ...
... are not obviously associated with galaxies. May have been heated as smaller galaxies (or clumps of galaxies) fell into the cluster –! In densest regions, gas may cool and sink toward the cluster center as a “cooling flow” –! Unlikely that all of it has escaped from galaxies, some must be around from ...
What are yellow stars?
... • Arcturus is the brightest star in the Constellation of Boötes. • Arcturus is the 4th Brightest stars. • Arcturus is visible from both hemispheres in the sky. ...
... • Arcturus is the brightest star in the Constellation of Boötes. • Arcturus is the 4th Brightest stars. • Arcturus is visible from both hemispheres in the sky. ...
BSA Astronomy Merit Badge
... heat faster than it can produce heat, causing a dangerously low body temperature. Normal body temperature is around 98.6 F (37 C). Hypothermia (hi-po-THUR-me-uh) occurs as your body temperature passes below 95 F (35 C). • When your body temperature drops, your heart, nervous system and other organs ...
... heat faster than it can produce heat, causing a dangerously low body temperature. Normal body temperature is around 98.6 F (37 C). Hypothermia (hi-po-THUR-me-uh) occurs as your body temperature passes below 95 F (35 C). • When your body temperature drops, your heart, nervous system and other organs ...
Stellar Distances - Red Hook Central School District
... Ex 5: A study of a star suggests it is a main sequence star. Its apparent brightness is 1 x 10-12 W/m2. The peak is 600 nm. a. Find the surface temperature. b. If the temperature implies a luminosity of 1 x 10 26 W, what is the star’s distance in LY? ...
... Ex 5: A study of a star suggests it is a main sequence star. Its apparent brightness is 1 x 10-12 W/m2. The peak is 600 nm. a. Find the surface temperature. b. If the temperature implies a luminosity of 1 x 10 26 W, what is the star’s distance in LY? ...
Research proposal uploaded for ESO fellowship
... of supernovae feedback on star formation and whether parametric forms used are good descriptions of these events. A key component to address how well the new modelling does, is to compare the predicted outflow velocities with observations. I also want to test how realistic are the assumptions made a ...
... of supernovae feedback on star formation and whether parametric forms used are good descriptions of these events. A key component to address how well the new modelling does, is to compare the predicted outflow velocities with observations. I also want to test how realistic are the assumptions made a ...
Star Birth
... • Without CO molecules to provide cooling, the clouds that formed the first stars had to be considerably warmer than today’s molecular clouds • The first stars must therefore have been more massive than most of today’s stars, for gravity to overcome pressure ...
... • Without CO molecules to provide cooling, the clouds that formed the first stars had to be considerably warmer than today’s molecular clouds • The first stars must therefore have been more massive than most of today’s stars, for gravity to overcome pressure ...
Our Galaxy, The Milky Way
... Simple model predicts the rotation curve of the Milky Way ought to look like: ...
... Simple model predicts the rotation curve of the Milky Way ought to look like: ...
Main Sequence stars
... Pollux has an apparent magnitude of 1.1 and an absolute magnitude of 1.1. Epsilon Eridani has an apparent magnitude of 3.72 and an absolute magnitude of 6.1. From which of these stars do we receive more light? ...
... Pollux has an apparent magnitude of 1.1 and an absolute magnitude of 1.1. Epsilon Eridani has an apparent magnitude of 3.72 and an absolute magnitude of 6.1. From which of these stars do we receive more light? ...
HR Diagram of Messier 80 using Hubble Space Telescope Data
... (4) Is the F450W a “red”, “green” or “blue” filter, meaning what color would things be if you looked through the filter at something? (5) Is the F814W a “red”, “green” or “blue” filter? (6) Is there any overlap to the filters? (7) How many other filters does the Hubble Space Telescope use? (8) Name ...
... (4) Is the F450W a “red”, “green” or “blue” filter, meaning what color would things be if you looked through the filter at something? (5) Is the F814W a “red”, “green” or “blue” filter? (6) Is there any overlap to the filters? (7) How many other filters does the Hubble Space Telescope use? (8) Name ...
Chapter 30 Review
... called dark matter composed of dim stellar remnants that have no mass. 1. True 2. False ...
... called dark matter composed of dim stellar remnants that have no mass. 1. True 2. False ...
Slide 1
... A Hertzprung-Russell diagram is a very useful illustration of the relationship between various key stellar properties, namely the luminosity and the effective temperature (related to both spectral type and colour) of a range of stars. An example is shown in Figure 1 (A). Stars at the bottom right ar ...
... A Hertzprung-Russell diagram is a very useful illustration of the relationship between various key stellar properties, namely the luminosity and the effective temperature (related to both spectral type and colour) of a range of stars. An example is shown in Figure 1 (A). Stars at the bottom right ar ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.