Andromeda Check-List - Norman Lockyer Observatory
... Not very impressive but some observers report seeing asterisms within the cluster. The most popular is either a trapezium or the letter “g”. Look for a line of around 15 stars. Some observers report seeing a strong bluish tint to the stars. NGC7380 – Open Cluster - I 1 m – Easy Easily viewed through ...
... Not very impressive but some observers report seeing asterisms within the cluster. The most popular is either a trapezium or the letter “g”. Look for a line of around 15 stars. Some observers report seeing a strong bluish tint to the stars. NGC7380 – Open Cluster - I 1 m – Easy Easily viewed through ...
Red Dwarf Stars: Ages, Rotation, Magnetic
... of the K1 V and M4.5 V stars. We have been carrying out photometry to determine the photometric rotation periods for these benchmark stars. We have also been carrying out photometry and spectroscopy of wide binary WD + K/M system that have good WD age estimates. So far this has resulted in rotation ...
... of the K1 V and M4.5 V stars. We have been carrying out photometry to determine the photometric rotation periods for these benchmark stars. We have also been carrying out photometry and spectroscopy of wide binary WD + K/M system that have good WD age estimates. So far this has resulted in rotation ...
class 1,S11
... We are on a planet, orbiting a star, in a galaxy (which is a member of the Local Group of galaxies in the Local Supercluster) • How did we come to be? • How can we know what the universe was like in the past? • Can we see the entire universe? ...
... We are on a planet, orbiting a star, in a galaxy (which is a member of the Local Group of galaxies in the Local Supercluster) • How did we come to be? • How can we know what the universe was like in the past? • Can we see the entire universe? ...
EARTH IN THE UNIVERSE TOPIC 3 2011-2012
... At that very moment, unknown to the audience, an asteroid named Hermes halfway between Mars and Jupiter was beginning a long plunge toward our planet. Six months later it would pass 300,000 miles from Earth’s orbit, only a little more than the distance to the Moon…. Hermes approaches Earth’s orbit t ...
... At that very moment, unknown to the audience, an asteroid named Hermes halfway between Mars and Jupiter was beginning a long plunge toward our planet. Six months later it would pass 300,000 miles from Earth’s orbit, only a little more than the distance to the Moon…. Hermes approaches Earth’s orbit t ...
The Sun and the Stars
... moons, asteroid belt, comets, meteors, and other objects. The Earth and other planets revolve around the Sun. The Sun is very important. Without it, there would be only darkness and our planet would be very cold and be without liquid water. Our planet would also be without people, animals, and plan ...
... moons, asteroid belt, comets, meteors, and other objects. The Earth and other planets revolve around the Sun. The Sun is very important. Without it, there would be only darkness and our planet would be very cold and be without liquid water. Our planet would also be without people, animals, and plan ...
Star Formation in Our Galaxy - Wiley-VCH
... C O. We have distinguished in the figure two major subunits, labeled Orion A and B. Both the elongated shape of the whole complex and its high degree of clumpiness are generic features of such structures. Along with their gas, molecular clouds contain an admixture of small solid particles, the inter ...
... C O. We have distinguished in the figure two major subunits, labeled Orion A and B. Both the elongated shape of the whole complex and its high degree of clumpiness are generic features of such structures. Along with their gas, molecular clouds contain an admixture of small solid particles, the inter ...
Sirius Astronomer - Orange County Astronomers
... HST has also come up with a new class of planet, a waterworld surrounded by a thick, steamy atmosphere. The planet is known as GJ1214b, and was discovered in 2009. Observations soon after showed that it has an atmosphere of water vapor. New HST observations in infrared showed that the whole atmosphe ...
... HST has also come up with a new class of planet, a waterworld surrounded by a thick, steamy atmosphere. The planet is known as GJ1214b, and was discovered in 2009. Observations soon after showed that it has an atmosphere of water vapor. New HST observations in infrared showed that the whole atmosphe ...
ISP 205: Visions of the Universe
... • Because no galaxies exist at such a great distance. • Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. • Because looking 15 billion light-years away means looking to a time before the universe existed. ...
... • Because no galaxies exist at such a great distance. • Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. • Because looking 15 billion light-years away means looking to a time before the universe existed. ...
PowerPoint Presentation - 16. Properties of Stars
... • How much light is it emitting: luminosity (L) [watts] • How far away is it: distance (d) [meters] ...
... • How much light is it emitting: luminosity (L) [watts] • How far away is it: distance (d) [meters] ...
The University of Sydney Page
... energy, the temperature of the core rises but the core does not expand. This means that the rate of energy production keeps going up, which keeps increasing the temperature, in a runaway process. In a few hours the temperature jumps to a billion degrees, producing more energy than the entire galaxy. ...
... energy, the temperature of the core rises but the core does not expand. This means that the rate of energy production keeps going up, which keeps increasing the temperature, in a runaway process. In a few hours the temperature jumps to a billion degrees, producing more energy than the entire galaxy. ...
Powerpoint file
... Short period M dwarfs are very active and we would have seen Ca II emission from the binary stars and X-ray emission ...
... Short period M dwarfs are very active and we would have seen Ca II emission from the binary stars and X-ray emission ...
Chapter 17 Star Stuff Agenda How does a star`s mass affect nuclear
... 3. Helium Core Burning: He fuses to C in core while H fuses to He in shell 4. Multiple Shell Burning: Many elements fuse in shells 5. Supernova leaves neutron star behind ...
... 3. Helium Core Burning: He fuses to C in core while H fuses to He in shell 4. Multiple Shell Burning: Many elements fuse in shells 5. Supernova leaves neutron star behind ...
Slide 1
... •Ellipticals have lots of globular clusters (about twice that of disk galaxies) •these fall into two groups based on color •color determined by metallicity, with more metal-rich GCs (redder) possibly the result of galaxy mergers •Ellipticals have much less cool, atomic gas than spiral galaxies •< 1 ...
... •Ellipticals have lots of globular clusters (about twice that of disk galaxies) •these fall into two groups based on color •color determined by metallicity, with more metal-rich GCs (redder) possibly the result of galaxy mergers •Ellipticals have much less cool, atomic gas than spiral galaxies •< 1 ...
Gone in a flash: supernovae in the survey era
... brighter than a Type Ia supernova). The first of SLSN (Gal-Yam 2012), commonly defined as CFHT, or DECam on the Cerro Tololo Interevent, SCP 06F6, was identified in 2009 and had being brighter than –21 in absolute magnitude American Observatory 4 m Blanco telescope), broad, unexplained spectral abso ...
... brighter than a Type Ia supernova). The first of SLSN (Gal-Yam 2012), commonly defined as CFHT, or DECam on the Cerro Tololo Interevent, SCP 06F6, was identified in 2009 and had being brighter than –21 in absolute magnitude American Observatory 4 m Blanco telescope), broad, unexplained spectral abso ...
PHYS3380_110415_bw - The University of Texas at Dallas
... • For stars whose mass is greater than 2.25 M, the electrons in their cores are not degenerate at the time of helium ignition and so there is no helium flash and they settle into a stage of quiescent helium burning before they approach the AGB. •Star cools and moves left on the H-R diagram possibly ...
... • For stars whose mass is greater than 2.25 M, the electrons in their cores are not degenerate at the time of helium ignition and so there is no helium flash and they settle into a stage of quiescent helium burning before they approach the AGB. •Star cools and moves left on the H-R diagram possibly ...
The Sun and Stars
... Nebulae, birth, and life span of stars How are stars A star, regardless of its size, begins its life inside a huge cloud of gas born? (mostly hydrogen) and dust called a nebula (Latin for “mist”). Gravitational forces cause denser regions of the nebula to collapse, forming a protostar. A protostar i ...
... Nebulae, birth, and life span of stars How are stars A star, regardless of its size, begins its life inside a huge cloud of gas born? (mostly hydrogen) and dust called a nebula (Latin for “mist”). Gravitational forces cause denser regions of the nebula to collapse, forming a protostar. A protostar i ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.