Word doc - UC-HiPACC - University of California, Santa Cruz
... Supernovae are not alike. For decades, astronomers had known that supernovae fell into different types based on their light curves, that is, their pattern of rising and falling brightness. Later, they found these types actually corresponded to different physical circumstances triggering the explosio ...
... Supernovae are not alike. For decades, astronomers had known that supernovae fell into different types based on their light curves, that is, their pattern of rising and falling brightness. Later, they found these types actually corresponded to different physical circumstances triggering the explosio ...
Astronomy Merit Badge Workshop
... Just by looking up at a star-filled night sky, it is obvious that stars vary in brightness. Some are very large yet very far away, while others are smaller than our Sun but could be hundreds or thousands of light years closer. The brighter the star, the lower the magnitude—the brightest stars have a ...
... Just by looking up at a star-filled night sky, it is obvious that stars vary in brightness. Some are very large yet very far away, while others are smaller than our Sun but could be hundreds or thousands of light years closer. The brighter the star, the lower the magnitude—the brightest stars have a ...
Slide 1 - Personal.psu.edu
... stars can profoundly affect their star cluster, as they can blow away dust and gas before it has time to collapse. ...
... stars can profoundly affect their star cluster, as they can blow away dust and gas before it has time to collapse. ...
Measuring stars Part I
... • brightness of a star as it appears from Earth • each step in magnitude is 2.5 times in brightness absolute magnitude • the apparent magnitude a star would have if it were 10 pc away ...
... • brightness of a star as it appears from Earth • each step in magnitude is 2.5 times in brightness absolute magnitude • the apparent magnitude a star would have if it were 10 pc away ...
lecture19 - Stony Brook University
... that are moving away from us with huge speeds, using the observed Doppler shifts of known spectral lines. This indicates that they are very very far away (we will make this connection between recessional velocity and distance clear later – it’s called the Hubble expansion of the universe). From the ...
... that are moving away from us with huge speeds, using the observed Doppler shifts of known spectral lines. This indicates that they are very very far away (we will make this connection between recessional velocity and distance clear later – it’s called the Hubble expansion of the universe). From the ...
the K-12 Teacher Resource Packet for
... Astronomy comes from the Greek words for ‘star’ and ‘law.’ As a science, it focuses primarily on the study of space, its objects, and phenomena outside of the Earth itself. The Development of Astronomy Astronomy is considered one of the oldest sciences. The study of the stars and plants began more o ...
... Astronomy comes from the Greek words for ‘star’ and ‘law.’ As a science, it focuses primarily on the study of space, its objects, and phenomena outside of the Earth itself. The Development of Astronomy Astronomy is considered one of the oldest sciences. The study of the stars and plants began more o ...
Starry Dome: Astronomy in Art and the Imagination
... Astronomy comes from the Greek words for ‘star’ and ‘law.’ As a science, it focuses primarily on the study of space, its objects, and phenomena outside of the Earth itself. The Development of Astronomy Astronomy is considered one of the oldest sciences. The study of the stars and plants began more o ...
... Astronomy comes from the Greek words for ‘star’ and ‘law.’ As a science, it focuses primarily on the study of space, its objects, and phenomena outside of the Earth itself. The Development of Astronomy Astronomy is considered one of the oldest sciences. The study of the stars and plants began more o ...
Danish ßrsted Mission In-Orbit Experiences and Status of The
... Analysis showed that the boom was misaligned by 36o from the satellite body to the boresight of the Star Imager and after having adjusted the transformation matrix between the Star Imager and the satellite body, the satellite was much more stable. The effort in aligning the Star Imager boresight had ...
... Analysis showed that the boom was misaligned by 36o from the satellite body to the boresight of the Star Imager and after having adjusted the transformation matrix between the Star Imager and the satellite body, the satellite was much more stable. The effort in aligning the Star Imager boresight had ...
bright - TutorPlus
... depending on their position on the H-R diagram. • Most stars line up along a slightly curved diagonal line called the main sequence. Our Sun is located on the main sequence. • On the main sequence, low mass stars tend to be cooler and less bright whereas high mass stars are hotter, brighter and loca ...
... depending on their position on the H-R diagram. • Most stars line up along a slightly curved diagonal line called the main sequence. Our Sun is located on the main sequence. • On the main sequence, low mass stars tend to be cooler and less bright whereas high mass stars are hotter, brighter and loca ...
HW7-3
... (260) RQ 3: What is a brown dwarf? A brown dwarf is a “failed star.” They are balls of gas without fusion. The upper end of brown dwarfs is well defined: 8% M☉ = 80 Jupiters. There is a not-so-welldefined line between small brown dwarfs and large planets. (260) RQ 6: Why do expanding stars become co ...
... (260) RQ 3: What is a brown dwarf? A brown dwarf is a “failed star.” They are balls of gas without fusion. The upper end of brown dwarfs is well defined: 8% M☉ = 80 Jupiters. There is a not-so-welldefined line between small brown dwarfs and large planets. (260) RQ 6: Why do expanding stars become co ...
dobsonians - Optical Vision Ltd
... wave distortion inside telescope tube (tube currents). Allow a longer cooling time for larger optics. If you are using an equatorial mount, use this time for polar alignment. ...
... wave distortion inside telescope tube (tube currents). Allow a longer cooling time for larger optics. If you are using an equatorial mount, use this time for polar alignment. ...
HR Diagram and Stellar Fusion
... H-R Diagram named for… • …Ejnar Hertzsprung and H. N. Russell, graph (see illustration) showing the luminosity of a star as a function of its surface temperature. The luminosity, or absolute magnitude, increases upwards on the vertical axis; the temperature (or some temperature-dependent characteri ...
... H-R Diagram named for… • …Ejnar Hertzsprung and H. N. Russell, graph (see illustration) showing the luminosity of a star as a function of its surface temperature. The luminosity, or absolute magnitude, increases upwards on the vertical axis; the temperature (or some temperature-dependent characteri ...
4 Distances in Astronomy
... In 1989–1993 the Hipparcos satellite measured the parallax for 120,000 stars with precision as good as 0.001 arcsec, and for another million stars with lower precision. An angle of 0.001 arcsec is comparable to the angular diameter of a golf ball viewed across the Atlantic Ocean, and corresponds to ...
... In 1989–1993 the Hipparcos satellite measured the parallax for 120,000 stars with precision as good as 0.001 arcsec, and for another million stars with lower precision. An angle of 0.001 arcsec is comparable to the angular diameter of a golf ball viewed across the Atlantic Ocean, and corresponds to ...
Space telescopes - International Space Science Institute
... GI (cf., Figure 9.11), which have become known as Wolter telescopes of Type I, Type II and Type III (Wolter 1952a). The surfaces used encompass a paraboloid, a hyperboloid and an ellipsoid. Type I and Type II make use of a paraboloid and a hyperboloid, type III combines a paraboloid and an ellipsoid ...
... GI (cf., Figure 9.11), which have become known as Wolter telescopes of Type I, Type II and Type III (Wolter 1952a). The surfaces used encompass a paraboloid, a hyperboloid and an ellipsoid. Type I and Type II make use of a paraboloid and a hyperboloid, type III combines a paraboloid and an ellipsoid ...
The professional project VEGA/CHARA and participation of ASPA
... This value is only ~ 40% of the critcal rotation speed (Vcrit = 620 km/s; for a primary´s mass of 15 M* and radius of 7R*). At the same time the innermost parts of the disk need to be rotating at the critcal speed (Porter 1998). The intermediate FHWM velocity of ~ 300 km/s in the monitoring at the o ...
... This value is only ~ 40% of the critcal rotation speed (Vcrit = 620 km/s; for a primary´s mass of 15 M* and radius of 7R*). At the same time the innermost parts of the disk need to be rotating at the critcal speed (Porter 1998). The intermediate FHWM velocity of ~ 300 km/s in the monitoring at the o ...
Major Stars of the Orion Constellation
... Mars and Jupiter. Due to its closeness and angular diameter, it was one of the first extra solar objects to have its disk diameter measured. “The angular diameter of Betelgeuse was first measured in 1920-1921 by Michelson and Pease using an astronomical interferometer on the Mount Wilson 100 inch te ...
... Mars and Jupiter. Due to its closeness and angular diameter, it was one of the first extra solar objects to have its disk diameter measured. “The angular diameter of Betelgeuse was first measured in 1920-1921 by Michelson and Pease using an astronomical interferometer on the Mount Wilson 100 inch te ...
Ir(t) - IPAM
... Slow or short-life infectees less likely to be observed Worm scans get dropped on crashed routers or congested links (network intermediate link, telescope’s access link) ...
... Slow or short-life infectees less likely to be observed Worm scans get dropped on crashed routers or congested links (network intermediate link, telescope’s access link) ...
PowerPoint - Star Life Cycle
... up with less energy than you started with! So instead of generating pressure to hold up the outer layers, the iron fusion actually takes pressure out of the core. Thus, there is nothing left to combat gravity from the outer layers. The result: collapse! ...
... up with less energy than you started with! So instead of generating pressure to hold up the outer layers, the iron fusion actually takes pressure out of the core. Thus, there is nothing left to combat gravity from the outer layers. The result: collapse! ...
The Tools of Astronomy
... centuries astronomers have built their instruments primarily for use in the narrow, visible, portion of the electromagnetic spectrum. • (Sec. 2.4) Optical telescopes are probably also the best-known type of astronomical hardware, so it is perhaps fitting that we begin our study with them. Although t ...
... centuries astronomers have built their instruments primarily for use in the narrow, visible, portion of the electromagnetic spectrum. • (Sec. 2.4) Optical telescopes are probably also the best-known type of astronomical hardware, so it is perhaps fitting that we begin our study with them. Although t ...
HR Diagram Lab Handout
... revolutionized the study of stars. You will have a labeled chart and a series of points to plot. From these points, you can deduce a lot of information about stars! Please read the directions in each step of the activity closely before answering questions. Each of the star data points has the follow ...
... revolutionized the study of stars. You will have a labeled chart and a series of points to plot. From these points, you can deduce a lot of information about stars! Please read the directions in each step of the activity closely before answering questions. Each of the star data points has the follow ...
Page pour l`impression
... In the asteroid belt, it is well known that there are gaps, i.e. some zones where no objects are present. These locations are in resonance with Jupiter . The role of Jupiter has been to eject the bodies in resonance with the planet. The 3:2 resonance with Neptune plays the inverse role. At the locat ...
... In the asteroid belt, it is well known that there are gaps, i.e. some zones where no objects are present. These locations are in resonance with Jupiter . The role of Jupiter has been to eject the bodies in resonance with the planet. The 3:2 resonance with Neptune plays the inverse role. At the locat ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.