Carbon Stars - The OzSky Star Safari
... area of the HR diagram that we call an 'instability strip' or an 'instability region'. When the star is in this area of the diagram it will become a variable star, one that varies in brightness over time.“ • “Mira stars are red giants (which began as low mass stars), with a temperature less than ...
... area of the HR diagram that we call an 'instability strip' or an 'instability region'. When the star is in this area of the diagram it will become a variable star, one that varies in brightness over time.“ • “Mira stars are red giants (which began as low mass stars), with a temperature less than ...
Closed Loop Performance
... nCc&context=C4a1ba7aADvjVQa1PpcFN ung4fzsYWr1SBl5fXtvLidUbAL4M9VSc= • Also see a video of how we close the loop here: • http://www.youtube.com/watch?v=wSiFoG 8qgKI&context=C4a1917aADvjVQa1PpcF Nung4fzsYWrw_ocFrcNJysPjatEvtUZbY= ...
... nCc&context=C4a1ba7aADvjVQa1PpcFN ung4fzsYWr1SBl5fXtvLidUbAL4M9VSc= • Also see a video of how we close the loop here: • http://www.youtube.com/watch?v=wSiFoG 8qgKI&context=C4a1917aADvjVQa1PpcF Nung4fzsYWrw_ocFrcNJysPjatEvtUZbY= ...
click here - CAPSTONE 2011
... magnitude of the stars at each location? What are the apparent magnitudes at each location? ...
... magnitude of the stars at each location? What are the apparent magnitudes at each location? ...
Starbursts – from 30 Doradus to Lyman
... although more modest events are often found in dwarf galaxies. These can be studied in much greater detail than the distant cases and have been found to exhibit common traits, such as the presence of compact, high-luminosity star clusters (often referred to as “super star clusters”). This conference ...
... although more modest events are often found in dwarf galaxies. These can be studied in much greater detail than the distant cases and have been found to exhibit common traits, such as the presence of compact, high-luminosity star clusters (often referred to as “super star clusters”). This conference ...
The Helium Flash • When the temperature of a stellar core reaches T
... (∼ 0.4 M⊙ ) appear near the base of the red giant branch. The star’s total mass or core mass does not affect the star’s effective temperature, except through determining the envelope mass. • Both helium-core burning and hydrogen shell-burning contribute to the luminosity of a horizontal branch star. I ...
... (∼ 0.4 M⊙ ) appear near the base of the red giant branch. The star’s total mass or core mass does not affect the star’s effective temperature, except through determining the envelope mass. • Both helium-core burning and hydrogen shell-burning contribute to the luminosity of a horizontal branch star. I ...
Classifying Spectra PDF version - the Home Page for Voyager2
... The spectral classes are specified by the letters O, B, A, F, G, K, M, L, T going hotter to colder. Each letter is subdivided by assigning a number 0 through 9 following the letter and going from hotter to colder. So B0 is colder than O9 and hotter than B1. Obviously not every type is shown. Origina ...
... The spectral classes are specified by the letters O, B, A, F, G, K, M, L, T going hotter to colder. Each letter is subdivided by assigning a number 0 through 9 following the letter and going from hotter to colder. So B0 is colder than O9 and hotter than B1. Obviously not every type is shown. Origina ...
The figure below shows what scientists over 1000 years ago thought
... All stars go through a lifecycle. The star Mira will go through a supernova stage in its lifecycle but the Sun will not. How is the star Mira different to the Sun? ...
... All stars go through a lifecycle. The star Mira will go through a supernova stage in its lifecycle but the Sun will not. How is the star Mira different to the Sun? ...
The Crown of the North Wind
... October 27th to November 10th If you were born between these dates, your guiding star is Alphecca, or Gemma, the brilliant blue-white star that is the central 'gem' in the arc of seven stars of Corona Borealis, which represents the crown of red, Indian jewels and fiery gold of Ariadne's Crown. Behin ...
... October 27th to November 10th If you were born between these dates, your guiding star is Alphecca, or Gemma, the brilliant blue-white star that is the central 'gem' in the arc of seven stars of Corona Borealis, which represents the crown of red, Indian jewels and fiery gold of Ariadne's Crown. Behin ...
Observing Orion
... degrees. It is somewhat brighter in the middle and shows a nice disk at higher powers. It was spotted at 100X but the central star was never seen, just a brightening in the middle. At 330X on a great night I saw the east side as consistently brighter than the west side. I called the color grey in th ...
... degrees. It is somewhat brighter in the middle and shows a nice disk at higher powers. It was spotted at 100X but the central star was never seen, just a brightening in the middle. At 330X on a great night I saw the east side as consistently brighter than the west side. I called the color grey in th ...
Observing Stellar Evolution
... Stellar evolution – refers to the stages in the lifetime of one star. When biologists talk about evolution they mean intergenerational evolution. While stars change from one generation to the next, the focus of this program is stellar lifetimes. Burning – The materials that comprise stars do not 'bu ...
... Stellar evolution – refers to the stages in the lifetime of one star. When biologists talk about evolution they mean intergenerational evolution. While stars change from one generation to the next, the focus of this program is stellar lifetimes. Burning – The materials that comprise stars do not 'bu ...
Chapter 17
... 15. How do we know the position of our sun and it's rotational velocity within the Galaxy? A. From radio waves reflected of the galactic nucleus. B. From its Doppler shift C. From the "fixed basis" of globular clusters in the galactic halo. D. From the proper motions of nearby open clusters. 16. Th ...
... 15. How do we know the position of our sun and it's rotational velocity within the Galaxy? A. From radio waves reflected of the galactic nucleus. B. From its Doppler shift C. From the "fixed basis" of globular clusters in the galactic halo. D. From the proper motions of nearby open clusters. 16. Th ...
9J Gravity and Space
... A constellation is a group of stars that make an imaginary shape in the night sky. They are usually named after mythological characters, people, animals and objects. Ancient farmers created imaginary images out of stars to keep track of the seasons and know when to plant and harvest crops. There are ...
... A constellation is a group of stars that make an imaginary shape in the night sky. They are usually named after mythological characters, people, animals and objects. Ancient farmers created imaginary images out of stars to keep track of the seasons and know when to plant and harvest crops. There are ...
Undiscovered Worlds educators guide
... observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as either periodic dimming (called “transits”) or shifting wavelengths within the electromagnetic spectrum (referred to as a “wobble”). To find a world capable of supporting l ...
... observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as either periodic dimming (called “transits”) or shifting wavelengths within the electromagnetic spectrum (referred to as a “wobble”). To find a world capable of supporting l ...
HR Diagram Explorer
... c) Draw in an arrow showing the direction of increasing radius on the diagram. (hint: thus must be perpendicular to the isoradius lines.) d) Draw in an arrow showing the direction of increasing mass for main sequence stars on the diagram. (Note that his arrow only applies to main sequence stars, but ...
... c) Draw in an arrow showing the direction of increasing radius on the diagram. (hint: thus must be perpendicular to the isoradius lines.) d) Draw in an arrow showing the direction of increasing mass for main sequence stars on the diagram. (Note that his arrow only applies to main sequence stars, but ...
First young loose association in the northern hemisphere?
... !!Taking account this property, Guillout et al. (1999) cross-correlated the ROSAT All-Sky Survey (RASS) with the Tycho catalogue creating the largest ("14 000 active stars) and most comprehensive set of late-type stellar X-ray sources, the so-called RasTyc sample. This stellar population can be used ...
... !!Taking account this property, Guillout et al. (1999) cross-correlated the ROSAT All-Sky Survey (RASS) with the Tycho catalogue creating the largest ("14 000 active stars) and most comprehensive set of late-type stellar X-ray sources, the so-called RasTyc sample. This stellar population can be used ...
Small star patterns for telescopes and binoculars Demelza Ramakers
... Poskus 1 is a group magnitude 11.5 to 12.8 stars with the shape of a flyswatter. You can find this asterism right above the star Gamma (γ) Delphini, which is located just outside the field of view. ...
... Poskus 1 is a group magnitude 11.5 to 12.8 stars with the shape of a flyswatter. You can find this asterism right above the star Gamma (γ) Delphini, which is located just outside the field of view. ...
Stellar Physics
... Practical demonstration: various small light sources of varying brightnesses could be placed in a totally darkened room or corridor. Four would be a suitable number, with them positioned side by side. As k pupils which is closest. It depends on brightness and distance. Care has to be taken with this ...
... Practical demonstration: various small light sources of varying brightnesses could be placed in a totally darkened room or corridor. Four would be a suitable number, with them positioned side by side. As k pupils which is closest. It depends on brightness and distance. Care has to be taken with this ...
PowerPoint Presentation - 16. Properties of Stars
... Geminorum © 2004 Pearson Education Inc., publishing as Addison-Wesley ...
... Geminorum © 2004 Pearson Education Inc., publishing as Addison-Wesley ...
Life Stages of High
... • After core helium fusion stops, He fuses into carbon in a shell around the carbon core, and H fuses to He in a shell around the helium layer. • This double-shell-burning stage never reaches equilibrium—the fusion rate periodically spikes upward in a series of thermal pulses. • With each spike, con ...
... • After core helium fusion stops, He fuses into carbon in a shell around the carbon core, and H fuses to He in a shell around the helium layer. • This double-shell-burning stage never reaches equilibrium—the fusion rate periodically spikes upward in a series of thermal pulses. • With each spike, con ...
The HARPS search for southern extra-solar planets
... We report the detection of two new very light planets orbiting the low metallicity M dwarf Gl 581, already known to harbour a 15.7 M⊕ closer-in planet (Bonfils et al. 2005b). The high radialvelocity precision reached with the HARPS spectrograph on the ESO 3.6-m telescope enabled these discoveries. T ...
... We report the detection of two new very light planets orbiting the low metallicity M dwarf Gl 581, already known to harbour a 15.7 M⊕ closer-in planet (Bonfils et al. 2005b). The high radialvelocity precision reached with the HARPS spectrograph on the ESO 3.6-m telescope enabled these discoveries. T ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.