Globular Clusters - Lick Observatory
... We can find the distance to our cluster. d= distance [in parsecs] M=absolute magnitude [the actual brightness] m=apparent [how bright the star appears to us] Ar=Extinction [amount of dust in-between us and our cluster] ...
... We can find the distance to our cluster. d= distance [in parsecs] M=absolute magnitude [the actual brightness] m=apparent [how bright the star appears to us] Ar=Extinction [amount of dust in-between us and our cluster] ...
For stars
... Why do stars in the night sky appear considerably different in brightness? The distance to stars are not all the same. ...
... Why do stars in the night sky appear considerably different in brightness? The distance to stars are not all the same. ...
1 Sep: 6.13am BST 15 Sep: 6.43am BST 30 Sep: 7.14am BST
... towards Hercules as detailed on the next page. Looking to the northeast you will see a bright star above the horizon, which is Capella the brightest in Auriga (the Charioteer). Facing East follow a line from Capella to the south and you will find the constellations of Perseus, Andromeda, and the Squ ...
... towards Hercules as detailed on the next page. Looking to the northeast you will see a bright star above the horizon, which is Capella the brightest in Auriga (the Charioteer). Facing East follow a line from Capella to the south and you will find the constellations of Perseus, Andromeda, and the Squ ...
Cosmology Handouts
... Rainbows reveal that white light is a combination of all the colours. In 1666, Isaac Newton showed that white light could be separated into its component colours using glass prisms. Soon scientists were using this new tool to analyze the light coming from several different light sources. Some scient ...
... Rainbows reveal that white light is a combination of all the colours. In 1666, Isaac Newton showed that white light could be separated into its component colours using glass prisms. Soon scientists were using this new tool to analyze the light coming from several different light sources. Some scient ...
M13 – The Great Hercules Cluster
... like a pinwheel. On a clear, dark summer night in the country, you can see a pale glow arching overhead from South to North. This is just the glow of that disk of a hundred billion stars seen edge-on. When we look at this band of light we are looking out along the plane of the galaxy. Surrounding th ...
... like a pinwheel. On a clear, dark summer night in the country, you can see a pale glow arching overhead from South to North. This is just the glow of that disk of a hundred billion stars seen edge-on. When we look at this band of light we are looking out along the plane of the galaxy. Surrounding th ...
Name _________ Date _____________ Period ______ Skills
... _____ 17. In the 1800s, astronomers classified stars according to a. their elements. b. their temperature. c. their age. d. their size. _____ 18. Stars are now classified by a. their elements. b. their temperature. c. their age. d. their size. _____ 19. Class O stars, the hottest stars, are a. yello ...
... _____ 17. In the 1800s, astronomers classified stars according to a. their elements. b. their temperature. c. their age. d. their size. _____ 18. Stars are now classified by a. their elements. b. their temperature. c. their age. d. their size. _____ 19. Class O stars, the hottest stars, are a. yello ...
Assessment Star Characteristics and Life Cycle
... 1. Below is a Hertzsprung-Russell Diagram that scientists use to compare stars based on their properties. ...
... 1. Below is a Hertzsprung-Russell Diagram that scientists use to compare stars based on their properties. ...
The Origin of the Milky Way
... The Galaxy is shaped like a disk The Sun is located at the inner edge of a spiral arm about 2/3 of the way out from the center to the edge The main components of the Galaxy are the disk, the bulge, and the halo We can measure the mass of the Galaxy from the orbits of stars ...
... The Galaxy is shaped like a disk The Sun is located at the inner edge of a spiral arm about 2/3 of the way out from the center to the edge The main components of the Galaxy are the disk, the bulge, and the halo We can measure the mass of the Galaxy from the orbits of stars ...
Stellar Evolution - Hays High Indians
... • . . . And so forth, as long as temperatures are high enough to fuse that particular element • As particles that are colliding get larger, much more heat (energy) is needed to get them to stick together ...
... • . . . And so forth, as long as temperatures are high enough to fuse that particular element • As particles that are colliding get larger, much more heat (energy) is needed to get them to stick together ...
Summary of Double Star Discoveries and JDSO Submissions
... This was an outstanding example of how a visual observer can detect a double star with careful observation and recording of their observation notes. Here is the actual report excerpt: At 04:28:01.0 the magnitude 10.1 target star TYC 4677-00696-1 crisply faded but did NOT disappear. It remained at le ...
... This was an outstanding example of how a visual observer can detect a double star with careful observation and recording of their observation notes. Here is the actual report excerpt: At 04:28:01.0 the magnitude 10.1 target star TYC 4677-00696-1 crisply faded but did NOT disappear. It remained at le ...
January 2007 - Western Nevada Astronomical Society
... WNAS. We hope to see a good crowd and it would be great if everyone could arrive by 7:00 pm at the Observatory. Robert is tentatively planning to give a lecture on the ten most interesting physics and astronomy events of 2006. Special events at the Observatory and the WNAS slowly down during the las ...
... WNAS. We hope to see a good crowd and it would be great if everyone could arrive by 7:00 pm at the Observatory. Robert is tentatively planning to give a lecture on the ten most interesting physics and astronomy events of 2006. Special events at the Observatory and the WNAS slowly down during the las ...
1st EXAM VERSION C - Department of Physics and Astronomy
... that is not in a binary star system A. *It is not possible to measure the star's mass accurately. B. There are several ways to measure its mass accurately. C. Its mass can be measured accurately only if its luminosity and temperature can be measured. D. Its mass can be measured accurately only if it ...
... that is not in a binary star system A. *It is not possible to measure the star's mass accurately. B. There are several ways to measure its mass accurately. C. Its mass can be measured accurately only if its luminosity and temperature can be measured. D. Its mass can be measured accurately only if it ...
notes
... light from another. Astronomers are have found other stars with planets around them. They are able to tell that these stars have planets because of how the planet effects the star. Only large planets have been detected so far (half the mass of Jupiter). A small planet would be difficult to detect be ...
... light from another. Astronomers are have found other stars with planets around them. They are able to tell that these stars have planets because of how the planet effects the star. Only large planets have been detected so far (half the mass of Jupiter). A small planet would be difficult to detect be ...
Lesson 2 Power Notes Outline
... When astronomers use the word luminosity, they mean the actual brightness of a star. They measure it on a scale called absolute magnitude. ...
... When astronomers use the word luminosity, they mean the actual brightness of a star. They measure it on a scale called absolute magnitude. ...
elementary measuring stars
... If brightness (in magnitudes) and distance are known, it is straightforward to establish the intrinsic brightness of a star. Astronomers use another magnitude scale for that, called absolute magnitude. Apparent magnitude is designated as m, absolute magnitude as M. Absolute magnitude is defined as ...
... If brightness (in magnitudes) and distance are known, it is straightforward to establish the intrinsic brightness of a star. Astronomers use another magnitude scale for that, called absolute magnitude. Apparent magnitude is designated as m, absolute magnitude as M. Absolute magnitude is defined as ...
AST301.Ch22.NeutGammBH - University of Texas Astronomy
... because pulsars should slow down and fade in millions of years, while all globular clusters are more than 10 billion years old!) So very old. Interpretation: Neutron star spun up by accretion from binary companion (closely related to x-ray bursters, which may be on their way to becoming millisecond ...
... because pulsars should slow down and fade in millions of years, while all globular clusters are more than 10 billion years old!) So very old. Interpretation: Neutron star spun up by accretion from binary companion (closely related to x-ray bursters, which may be on their way to becoming millisecond ...
Star Formation: Interstellar Gas and Dust
... • But following exhaustion of H fuel in center: No further nuclear burning Î Temperature drops Î Pressure drops Î Core contracts • Core contraction releases gravitational energy • So center heats up • But never enough to maintain hydrostatic equilibrium. ...
... • But following exhaustion of H fuel in center: No further nuclear burning Î Temperature drops Î Pressure drops Î Core contracts • Core contraction releases gravitational energy • So center heats up • But never enough to maintain hydrostatic equilibrium. ...
MS 1512–CB58 - Columbia University Department of Astronomy
... Thanks to its gravitationally lensed nature, the z = 2.7276 galaxy MS 1512−cB58 (or cB58 for short) provides an unusually clear window on the population of starforming galaxies identified at these redshifts through the Lyman break technique (Steidel et al., 1996). Discovered by Yee et al. (1996), cB ...
... Thanks to its gravitationally lensed nature, the z = 2.7276 galaxy MS 1512−cB58 (or cB58 for short) provides an unusually clear window on the population of starforming galaxies identified at these redshifts through the Lyman break technique (Steidel et al., 1996). Discovered by Yee et al. (1996), cB ...
Chapter 15: The Milky Way Galaxy
... Telescope of the MidNineteenth Century Lord Rosse’s sketch of the spiral structure of the galaxy M51 ...
... Telescope of the MidNineteenth Century Lord Rosse’s sketch of the spiral structure of the galaxy M51 ...
Opakování z minulého cvičení
... Comets are thought to originate in a spherical shell or halo, beyond the orbits of the planets and about halfway to the nearest star (tens of thousands of astronomical units from the Sun). Comets may have been stored in this Oort cloud since the formation of the Solar System; a rival theory suggests ...
... Comets are thought to originate in a spherical shell or halo, beyond the orbits of the planets and about halfway to the nearest star (tens of thousands of astronomical units from the Sun). Comets may have been stored in this Oort cloud since the formation of the Solar System; a rival theory suggests ...
File - Awakening in Grade 6
... Earth, our Sun appears to trace a circular path. This path defines a plane called the plane of the ecliptic (or just the ecliptic). The zodiac is the group (or “belt”) of constellations that fall along the plane of the ecliptic. It is through these constellations that our Sun appears to “pass” durin ...
... Earth, our Sun appears to trace a circular path. This path defines a plane called the plane of the ecliptic (or just the ecliptic). The zodiac is the group (or “belt”) of constellations that fall along the plane of the ecliptic. It is through these constellations that our Sun appears to “pass” durin ...
File
... Earth, our Sun appears to trace a circular path. This path defines a plane called the plane of the ecliptic (or just the ecliptic). The zodiac is the group (or “belt”) of constellations that fall along the plane of the ecliptic. It is through these constellations that our Sun appears to “pass” durin ...
... Earth, our Sun appears to trace a circular path. This path defines a plane called the plane of the ecliptic (or just the ecliptic). The zodiac is the group (or “belt”) of constellations that fall along the plane of the ecliptic. It is through these constellations that our Sun appears to “pass” durin ...
Assignment 8 - utoledo.edu
... b. it was fused from hydrogen atoms during the mainsequence stage of a star's life long before the Sun existed c. it was made from smaller nuclei in the hot core of the Earth when our planet first formed d. it was fused from 3 helium nuclei in the core of a red giant star long before the Sun exis ...
... b. it was fused from hydrogen atoms during the mainsequence stage of a star's life long before the Sun existed c. it was made from smaller nuclei in the hot core of the Earth when our planet first formed d. it was fused from 3 helium nuclei in the core of a red giant star long before the Sun exis ...
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.