d 2
... Proxima Centauri lies 270 kilometers (170 miles) away Barnard’s Star lies 370 kilometers (230 miles) away Less than 100 stars lie within 1000 kilometers (600 miles) ...
... Proxima Centauri lies 270 kilometers (170 miles) away Barnard’s Star lies 370 kilometers (230 miles) away Less than 100 stars lie within 1000 kilometers (600 miles) ...
the star
... • The sun – a typical yellow dwarf star. Type G2 with 8 planets • Proxima Centauri – closest of the triplet of stars loosely known as alpha-Centauri Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light ye ...
... • The sun – a typical yellow dwarf star. Type G2 with 8 planets • Proxima Centauri – closest of the triplet of stars loosely known as alpha-Centauri Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light ye ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... Some stars end their lives in cataclysmic explosions: spectacular supernovae, which briefly become the most brilliant objects in their home galaxies, visible from millions or even billions of light-years away. Supernovae are of several distinct types, as is evident from their spectra—the graphs astr ...
... Some stars end their lives in cataclysmic explosions: spectacular supernovae, which briefly become the most brilliant objects in their home galaxies, visible from millions or even billions of light-years away. Supernovae are of several distinct types, as is evident from their spectra—the graphs astr ...
Binary Stars (Professor Powerpoint)
... causing a periodic variation in brightness. Spectroscopic Binary - two stars that are found to orbit one another through observations of the Doppler effect in their spectral lines . At least half of the stars in the sky are binaries. Eclipsing Binary stars are also referred to as Extrinsic Variable ...
... causing a periodic variation in brightness. Spectroscopic Binary - two stars that are found to orbit one another through observations of the Doppler effect in their spectral lines . At least half of the stars in the sky are binaries. Eclipsing Binary stars are also referred to as Extrinsic Variable ...
The magnitude scale
... An increase of one magnitude corresponds to approximately 2.5 less light reaching the eye or telescope. [A scale like this where a quantity is multiplied by a fixed amount for a fixed increase in its scale value, is called a logarithmic scale. Another example that you may be familiar with is the dec ...
... An increase of one magnitude corresponds to approximately 2.5 less light reaching the eye or telescope. [A scale like this where a quantity is multiplied by a fixed amount for a fixed increase in its scale value, is called a logarithmic scale. Another example that you may be familiar with is the dec ...
Star Groups and Big Bang Power Point
... In star systems that have more than two stars, two stars may revolve rapidly around a common barycenter, while a third star revolves more slowly at a greater distance from the pair ...
... In star systems that have more than two stars, two stars may revolve rapidly around a common barycenter, while a third star revolves more slowly at a greater distance from the pair ...
Analyzing Spectra
... star's atmosphere. As light emitted from a star passes through the star's atmosphere, some of it is absorbed by elements in the atmosphere. The wavelengths of the light that are absorbed appear as dark lines in the spectrum. Each element absorbs certain wavelengths, producing a certain pattern of da ...
... star's atmosphere. As light emitted from a star passes through the star's atmosphere, some of it is absorbed by elements in the atmosphere. The wavelengths of the light that are absorbed appear as dark lines in the spectrum. Each element absorbs certain wavelengths, producing a certain pattern of da ...
The Sky is Our Laboratory
... • A galaxy is a body of stars, gas, and dark matter kept together by gravity; • The `cosmos’ is a loose definition to indicate the Universe, or components of it. It comes from Greek, to indicate an harmonious whole, opposed to chaos. ...
... • A galaxy is a body of stars, gas, and dark matter kept together by gravity; • The `cosmos’ is a loose definition to indicate the Universe, or components of it. It comes from Greek, to indicate an harmonious whole, opposed to chaos. ...
lecture12
... A classification of the stellar black body For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
... A classification of the stellar black body For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
April11
... – Instability comes from partial absorption of radiation in the interior of the star • Helium absorbs radiation, and the outer layers of the star get pushed away from core • As the star expands, the density decreases, letting photons escape • Outer layers head back inward toward core ...
... – Instability comes from partial absorption of radiation in the interior of the star • Helium absorbs radiation, and the outer layers of the star get pushed away from core • As the star expands, the density decreases, letting photons escape • Outer layers head back inward toward core ...
Integrative Studies 410 Our Place in the Universe
... The Mass of the Galaxy • Can be determined using Kepler’s 3rd Law – Solar System: the orbital velocities of planets determined by mass of Sun – Galaxy: orbital velocities of stars are determined by total mass of the galaxy contained within that star’s orbit ...
... The Mass of the Galaxy • Can be determined using Kepler’s 3rd Law – Solar System: the orbital velocities of planets determined by mass of Sun – Galaxy: orbital velocities of stars are determined by total mass of the galaxy contained within that star’s orbit ...
Star Life Study Guide
... called the a. event horizon b. accretion disk c. singularity 5. _____ Nearly 90% of all stars are in the mid-life point of their life cycle and are called a. red giants b. main sequence c. planetary nebulas 6. _____ Stars are held together by a. magnetic forces b. electrical forces ...
... called the a. event horizon b. accretion disk c. singularity 5. _____ Nearly 90% of all stars are in the mid-life point of their life cycle and are called a. red giants b. main sequence c. planetary nebulas 6. _____ Stars are held together by a. magnetic forces b. electrical forces ...
powerpoint - Physics @ IUPUI
... • Then, the H is fused into He and crushed onto the surface of the neutron star. • Soon you build up a layer of He (sort of like a ...
... • Then, the H is fused into He and crushed onto the surface of the neutron star. • Soon you build up a layer of He (sort of like a ...
Earth in the Universe Answer each in your binder or notebook. Date
... Which statement about stars is not accurate? A. A small group of stars is called a galaxy. B. Stars consist mainly of hydrogen and helium. C. Types of stars include red giants, super giants, and dwarf stars. D. Constellations of stars are found in different places in the sky. ...
... Which statement about stars is not accurate? A. A small group of stars is called a galaxy. B. Stars consist mainly of hydrogen and helium. C. Types of stars include red giants, super giants, and dwarf stars. D. Constellations of stars are found in different places in the sky. ...
Exam Study Guide
... 82. How is a white dwarf formed? 83. Why are bright blue stars an indicator of recent star formation? 84. Why are star clusters so useful in testing theories of stellar evolution? 85. What is the proper order of the following objects in terms of increasing size? brown dwarf, G-type main sequence sta ...
... 82. How is a white dwarf formed? 83. Why are bright blue stars an indicator of recent star formation? 84. Why are star clusters so useful in testing theories of stellar evolution? 85. What is the proper order of the following objects in terms of increasing size? brown dwarf, G-type main sequence sta ...
6-Where to Survey - The Challenger Learning Center
... made up of ice bodies that may go half way to the nearest star. What you may not realize is that all of these pieces of the solar system collapsed down from a cloud of material about 4.5 billion years ago making our star and its planets. This is happening elsewhere in our galaxy where solar systems ...
... made up of ice bodies that may go half way to the nearest star. What you may not realize is that all of these pieces of the solar system collapsed down from a cloud of material about 4.5 billion years ago making our star and its planets. This is happening elsewhere in our galaxy where solar systems ...
- National Optical Astronomy Observatory
... Figure 1: (X=color index (b-v), Y=Brightness (v)) According to the graph, the tip of the main sequence appears to lie around NGC 1496-1. This star’s color index is approximately 0.062, classifying it as a spectral type A star. Based on this observation, the age of the cluster is estimated to be no ...
... Figure 1: (X=color index (b-v), Y=Brightness (v)) According to the graph, the tip of the main sequence appears to lie around NGC 1496-1. This star’s color index is approximately 0.062, classifying it as a spectral type A star. Based on this observation, the age of the cluster is estimated to be no ...
Jeopardy - Cloudfront.net
... a. absorption spectrum of elements to the emission spectra of a star b. continuous spectrum of elements to the emission spectra of a star c. emission spectrum of elements to the absorption spectra of a star d. emission spectrum of elements to continuous spectra of a star ...
... a. absorption spectrum of elements to the emission spectra of a star b. continuous spectrum of elements to the emission spectra of a star c. emission spectrum of elements to the absorption spectra of a star d. emission spectrum of elements to continuous spectra of a star ...
Consider Average Stars
... Look to the western horizon, with the sun still up in the sky. Then move your cursor to the time display at the top left, and advance the minutes quickly by holding down the arrow key on your keyboard. This makes the sun set rapidly – and you can watch the stars come out! ...
... Look to the western horizon, with the sun still up in the sky. Then move your cursor to the time display at the top left, and advance the minutes quickly by holding down the arrow key on your keyboard. This makes the sun set rapidly – and you can watch the stars come out! ...
Part B
... Active Galactic Nuclei Active galaxies are galaxies which have a small core of emission embedded in an otherwise typical galaxy. This core is typically a quasar. The total energy of normal galaxies like the Milky Way is just the sum of the emission from each of the stars. For the "active" galaxies, ...
... Active Galactic Nuclei Active galaxies are galaxies which have a small core of emission embedded in an otherwise typical galaxy. This core is typically a quasar. The total energy of normal galaxies like the Milky Way is just the sum of the emission from each of the stars. For the "active" galaxies, ...
Stars, Galaxies & Universe
... • Stars are classified by size, temperature, and brightness. • Temperature of a star is indicated by color, hot stars are blue & cooler stars are red. • Apparent brightness is the brightness of a star as observed from earth. • Absolute magnitude is the brightness of a star observed at the distance o ...
... • Stars are classified by size, temperature, and brightness. • Temperature of a star is indicated by color, hot stars are blue & cooler stars are red. • Apparent brightness is the brightness of a star as observed from earth. • Absolute magnitude is the brightness of a star observed at the distance o ...
Stars Crossword
... 4. a singularity whose gravity is so strong that nothing can escape - not even light 5. the area surrounding a blackhole where at that point nothing can escape 9. the middle age stage of a small star like ours 11. when a very large star's outer layer explodes outward with an amazing amount of force ...
... 4. a singularity whose gravity is so strong that nothing can escape - not even light 5. the area surrounding a blackhole where at that point nothing can escape 9. the middle age stage of a small star like ours 11. when a very large star's outer layer explodes outward with an amazing amount of force ...
BAS - Monthly Sky Guide
... Triangulum Australe is a very challenging constellation for telescope observers. It is home to many galaxies but they are all very distant and very faint. A very dark sky is required to see any of the objects here. Start, and perhaps instantly finish, with the faint galaxy NGC 6183 located 220 mill ...
... Triangulum Australe is a very challenging constellation for telescope observers. It is home to many galaxies but they are all very distant and very faint. A very dark sky is required to see any of the objects here. Start, and perhaps instantly finish, with the faint galaxy NGC 6183 located 220 mill ...
Andromeda Check-List - Norman Lockyer Observatory
... NGC7142 – Open Cluster – II 2 r – Moderate In a moderate sized telescope this appears as a rich group of stars set against the background of unresolved stars. By increasing the aperture more stars a revealed making it a rich site in the eyepiece. This Cluster lies very close to the reflection Nebula ...
... NGC7142 – Open Cluster – II 2 r – Moderate In a moderate sized telescope this appears as a rich group of stars set against the background of unresolved stars. By increasing the aperture more stars a revealed making it a rich site in the eyepiece. This Cluster lies very close to the reflection Nebula ...
Cosmology, galaxies, stars and the sun
... supergiant star’s protons and electrons combine to form neutrons. •The creates pressure that halts the collapse of the core. •These neutrons stars can have 1.5 to 3 times more mass that the sun. ...
... supergiant star’s protons and electrons combine to form neutrons. •The creates pressure that halts the collapse of the core. •These neutrons stars can have 1.5 to 3 times more mass that the sun. ...
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.