Stars Notes - Yonkers Public Schools
... size of Earth) • Hot • Low in luminosity (due to their small size) • Planetary nebula: The resulting glowing halo of gases that forms when a white dwarf’s layers give off visible light • Black dwarfs – dead stars ...
... size of Earth) • Hot • Low in luminosity (due to their small size) • Planetary nebula: The resulting glowing halo of gases that forms when a white dwarf’s layers give off visible light • Black dwarfs – dead stars ...
The Future Sun • Homework 5 is due Wed, 24 March at 6:30am
... In what ways are HR diagrams of H+χ Perseus, Pleiades, Hyades, & NGC188 different? Q Which is false a. Hottest stars in Perseus are hotter than hottest stars in Pleiades. b. Most stars are on the main sequence. c. NGC188 has small range of luminosity d. Some clusters have giants. ...
... In what ways are HR diagrams of H+χ Perseus, Pleiades, Hyades, & NGC188 different? Q Which is false a. Hottest stars in Perseus are hotter than hottest stars in Pleiades. b. Most stars are on the main sequence. c. NGC188 has small range of luminosity d. Some clusters have giants. ...
18.1 NOTES How are stars formed? Objective: Describe how stars
... A star is a big ball of gases that gives off heat and light. The Sun is only one of billions of stars that make up are galaxy, and there are billions of galaxies. Most stars appear to be white in color. However, there are blue, white, yellow, orange, and red stars. The color of a star determines how ...
... A star is a big ball of gases that gives off heat and light. The Sun is only one of billions of stars that make up are galaxy, and there are billions of galaxies. Most stars appear to be white in color. However, there are blue, white, yellow, orange, and red stars. The color of a star determines how ...
Stellar evolution, II
... be just visible to the unaided eye. A 30 day Cepheid would be 10 magnitudes brighter, or a bit brighter than Venus. ...
... be just visible to the unaided eye. A 30 day Cepheid would be 10 magnitudes brighter, or a bit brighter than Venus. ...
The Night Sky This Month - Usk Astronomical Society
... Mid-month on the 16th the Sun moves from Leo into Virgo. If you have any news of sunspot activity, other members would be interested, so let us know. Don’t forget to ask experienced members for help if you want to observe the Sun. On the 22nd the Sun passes into the southern celestial hemisphere; th ...
... Mid-month on the 16th the Sun moves from Leo into Virgo. If you have any news of sunspot activity, other members would be interested, so let us know. Don’t forget to ask experienced members for help if you want to observe the Sun. On the 22nd the Sun passes into the southern celestial hemisphere; th ...
Stars
... The Blue Supergiants will begin to burn up all of the hydrogen that they have after a few million years. When this happens, the outer shell of the star begins to expand. It grows to about triple the size that it currently is. The Blue Supergiant now becomes a Supergiant. Supergiants are orange/yello ...
... The Blue Supergiants will begin to burn up all of the hydrogen that they have after a few million years. When this happens, the outer shell of the star begins to expand. It grows to about triple the size that it currently is. The Blue Supergiant now becomes a Supergiant. Supergiants are orange/yello ...
LESSON 4, STARS
... is held together by gravity and gives off its own light constellation a group of stars that appears to form a pattern parallax the apparent shift in an objects position when viewed from two locations. ...
... is held together by gravity and gives off its own light constellation a group of stars that appears to form a pattern parallax the apparent shift in an objects position when viewed from two locations. ...
The Family of Stars
... more luminous than star A, so star B must be further away. The flux received from both stars is the same, but star B is 100 times more luminous than star A, so star B must be further away. Both stars are equally luminous, but the flux received from star A is 5 times less than from star B, so star A ...
... more luminous than star A, so star B must be further away. The flux received from both stars is the same, but star B is 100 times more luminous than star A, so star B must be further away. Both stars are equally luminous, but the flux received from star A is 5 times less than from star B, so star A ...
Planisphere
... distortion, constellations in the sky will not appear as they do on the planisphere, but the planisphere can help us identify bright stars and give us a general idea of where to look for other stars. It's also very useful in figuring out when certain star will rise or set. The best way to get comfor ...
... distortion, constellations in the sky will not appear as they do on the planisphere, but the planisphere can help us identify bright stars and give us a general idea of where to look for other stars. It's also very useful in figuring out when certain star will rise or set. The best way to get comfor ...
Solutions
... You have two hours to complete this exam. There are a total of six problems and you are to solve all of them. Not all the problems are worth the same number of points. You may use Introductory Astronomy and Astrophysics (Zeilik & Gregory), Astronomy: The Evoloving Universe ( Zeilik), and class notes ...
... You have two hours to complete this exam. There are a total of six problems and you are to solve all of them. Not all the problems are worth the same number of points. You may use Introductory Astronomy and Astrophysics (Zeilik & Gregory), Astronomy: The Evoloving Universe ( Zeilik), and class notes ...
Chapter 28 Stars and Their Characteristics
... bright a star “appears” to be from Earth. The Apparent Magnitude of a star is affected by Absolute- Magnitude (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as ...
... bright a star “appears” to be from Earth. The Apparent Magnitude of a star is affected by Absolute- Magnitude (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as ...
Formation of Stars - mcp
... 3. Our sun is used to determine masses of stars ◦ 1.0 solar mass = mass of our sun ◦ If a stellar object is less than .01 solar mass it will not turn into a star ...
... 3. Our sun is used to determine masses of stars ◦ 1.0 solar mass = mass of our sun ◦ If a stellar object is less than .01 solar mass it will not turn into a star ...
Inverse Square Law
... distances of stars, their relative brightness, their relative luminosity and their magnitude difference. Suppose Star A has a luminosity of LA and is at a distance of dA while Star B has a luminosity of LB and is at a distance of dB. What is the ratio of the brightness of star A (bA) to the brightne ...
... distances of stars, their relative brightness, their relative luminosity and their magnitude difference. Suppose Star A has a luminosity of LA and is at a distance of dA while Star B has a luminosity of LB and is at a distance of dB. What is the ratio of the brightness of star A (bA) to the brightne ...
Our Community`s Place Among the Stars
... helium, causing its outer layers to expand and cool Giant stars are bright, but not hot (near the upper right corner of HR diagram) ...
... helium, causing its outer layers to expand and cool Giant stars are bright, but not hot (near the upper right corner of HR diagram) ...
Lec7_2D
... blackbody law, hot things emit more light. But a star’s brightness also depends on its size – the larger the area, the more light that is emitted. The relationship between luminosity, radius, and temperature is ...
... blackbody law, hot things emit more light. But a star’s brightness also depends on its size – the larger the area, the more light that is emitted. The relationship between luminosity, radius, and temperature is ...
Introduction to Stars: Their Properties
... Define brightness (see text), apparent magnitude, absolute magnitude. ...
... Define brightness (see text), apparent magnitude, absolute magnitude. ...
A Star is Born worksheet and key
... 10. How is a planetary nebula formed? When the outer layers of the red giant drift into space. 11. For how long do white dwarfs radiate their leftover heat? Billions of years. 12. How long is the life phase of a red supergiant? Millions of years. 13. What’s two differences between red giants and red ...
... 10. How is a planetary nebula formed? When the outer layers of the red giant drift into space. 11. For how long do white dwarfs radiate their leftover heat? Billions of years. 12. How long is the life phase of a red supergiant? Millions of years. 13. What’s two differences between red giants and red ...
Where is the Sun in the Milk Way?
... • This equaDon shows the effect of the geometrical diluDon of the flux as a funcDon of distance from a star. • It’s also called the “Inverse-‐Square Law” ...
... • This equaDon shows the effect of the geometrical diluDon of the flux as a funcDon of distance from a star. • It’s also called the “Inverse-‐Square Law” ...
Stars
... It is about 2,100 times larger than the sun. It would fit about 9,261,000,000 suns in it. The smallest star known is the OGLE-TR-122B it is 12 solar radii. • That is about 167,ooo km (kilometers). ...
... It is about 2,100 times larger than the sun. It would fit about 9,261,000,000 suns in it. The smallest star known is the OGLE-TR-122B it is 12 solar radii. • That is about 167,ooo km (kilometers). ...
If you wish to a copy of this months Night Sky News
... Denebola the A3 type star at the end of Leo’s tail is about 39 light years away, and, in these times, shines with a magnitude of 2.14. However, up until about 400 years ago, Denebola was recorded as a first magnitude star. The reason for this is still something of a mystery. Were observations inaccu ...
... Denebola the A3 type star at the end of Leo’s tail is about 39 light years away, and, in these times, shines with a magnitude of 2.14. However, up until about 400 years ago, Denebola was recorded as a first magnitude star. The reason for this is still something of a mystery. Were observations inaccu ...
REACH FOR THE STARS MLK 2009
... 7. What was Messier looking for when he made his observations? _________________ 8. Why are there so few M Objects in the southern skies? __________________________________ 9. When did M 1 SN? _____________________ 10. What do Cas A and Tycho in Cassiopeia have in common? ___________________________ ...
... 7. What was Messier looking for when he made his observations? _________________ 8. Why are there so few M Objects in the southern skies? __________________________________ 9. When did M 1 SN? _____________________ 10. What do Cas A and Tycho in Cassiopeia have in common? ___________________________ ...
Lesson 4, Stars
... Objectives Define some of the properties of stars. Compare the evolutionary paths of star ...
... Objectives Define some of the properties of stars. Compare the evolutionary paths of star ...
Introduction to Stars: Their Properties
... magnitude of about -26.5 Sirius is next in line, with an apparent magnitude of -1.5; how many times brighter is the Sun than Sirius? a) 25 ...
... magnitude of about -26.5 Sirius is next in line, with an apparent magnitude of -1.5; how many times brighter is the Sun than Sirius? a) 25 ...
Parallax, Apparent Magnitude and Absolute Magnitude
... Hence, to determine the luminosity of a star from its flux, we also need to know its distance, D. At least for the nearest stars, we can measure their distance accurately using trigonometry. Figure 1 shows the effect of trigonometric parallax: when we look at an object along different lines of sight ...
... Hence, to determine the luminosity of a star from its flux, we also need to know its distance, D. At least for the nearest stars, we can measure their distance accurately using trigonometry. Figure 1 shows the effect of trigonometric parallax: when we look at an object along different lines of sight ...
Luminosities and magnitudes of stars
... Brightness and the magnitude scale Magnitude scale later standardized so that mag. = 1 is exactly 100 x brighter than mag. = 6 Difference of 5 mag = factor 100 in brightness Difference of 1 mag = factor 2.512 in brightness i.e. ...
... Brightness and the magnitude scale Magnitude scale later standardized so that mag. = 1 is exactly 100 x brighter than mag. = 6 Difference of 5 mag = factor 100 in brightness Difference of 1 mag = factor 2.512 in brightness i.e. ...
Canis Minor
Canis Minor /ˌkeɪnɨs ˈmaɪnər/ is a small constellation in the northern celestial hemisphere. In the second century, it was included as an asterism, or pattern, of two stars in Ptolemy's 48 constellations, and it is counted among the 88 modern constellations. Its name is Latin for ""lesser dog"", in contrast to Canis Major, the ""greater dog""; both figures are commonly represented as following the constellation of Orion the hunter.Canis Minor contains only two stars brighter than the fourth magnitude, Procyon (Alpha Canis Minoris), with a magnitude of 0.34, and Gomeisa (Beta Canis Minoris), with a magnitude of 2.9. The constellation's dimmer stars were noted by Johann Bayer, who named eight stars including Alpha and Beta, and John Flamsteed, who numbered fourteen. Procyon is the seventh-brightest star in the night sky, as well as one of the closest. A yellow-white main sequence star, it has a white dwarf companion. Gomeisa is a blue-white main sequence star. Luyten's Star is a ninth-magnitude red dwarf and the Solar System's next closest stellar neighbour in the constellation after Procyon. The fourth-magnitude HD 66141, which has evolved into an orange giant towards the end of its life cycle, was discovered to have a planet in 2012. There are two faint deep sky objects within the constellation's borders. The 11 Canis-Minorids are a meteor shower that can be seen in early December.