Article PDF - IOPscience
... From space motions of a nearly complete sample of nearby high-velocity halo stars these authors conclude that seven objects are members of a single debris stream. From their data Helmi et al. conclude that D8% of all metal-poor stars outside the solar radius represent the remnants of a single ...
... From space motions of a nearly complete sample of nearby high-velocity halo stars these authors conclude that seven objects are members of a single debris stream. From their data Helmi et al. conclude that D8% of all metal-poor stars outside the solar radius represent the remnants of a single ...
exoplanet observing for amateurs
... Institute, STScI. The XO project has announced the discovery of three exoplanets, XO-1b, XO-2b and XO-3b. All members of the XO team are co-authors of the announcement publications in the Astrophysical Journal. I have worked with fellow ET members for 2.5 years, and I am familiar with the issues tha ...
... Institute, STScI. The XO project has announced the discovery of three exoplanets, XO-1b, XO-2b and XO-3b. All members of the XO team are co-authors of the announcement publications in the Astrophysical Journal. I have worked with fellow ET members for 2.5 years, and I am familiar with the issues tha ...
Save the Sky: Adventures in Sky Monitoring
... First CCD device to image the position of a gamma-ray burst during the time of the gamma-ray burst trigger (#1: GRB 001005) Most complete and uniform coverage of a meteor storm: the 2001 Leonids Most complete light curves for hundreds of bright variable stars starting from May 2000, when the first C ...
... First CCD device to image the position of a gamma-ray burst during the time of the gamma-ray burst trigger (#1: GRB 001005) Most complete and uniform coverage of a meteor storm: the 2001 Leonids Most complete light curves for hundreds of bright variable stars starting from May 2000, when the first C ...
talk
... Baryonic fraction for NGC 3741 (within the extent of the gas disk) ~ 0.18 ► comparable to other galaxies with less extended HI disk No evidence for baryon loss (measured within the extent of gas disk) in faint dwarf galaxies (contradiction to simulations of galaxy formation !) To reconcile rot ...
... Baryonic fraction for NGC 3741 (within the extent of the gas disk) ~ 0.18 ► comparable to other galaxies with less extended HI disk No evidence for baryon loss (measured within the extent of gas disk) in faint dwarf galaxies (contradiction to simulations of galaxy formation !) To reconcile rot ...
Kinetic equilibrium of iron in the atmospheres of cool stars
... (≡ Gmb 1830) as a cool main sequence star, HD 19445 as a typical subdwarf, HD 84937 as a turnoff star and HD 140283 as a moderately cool subgiant. The last two of these reference stars have also been chosen by Asplund et al. (2000) to model hydrodynamic convection in metal-poor stars. Photospheric su ...
... (≡ Gmb 1830) as a cool main sequence star, HD 19445 as a typical subdwarf, HD 84937 as a turnoff star and HD 140283 as a moderately cool subgiant. The last two of these reference stars have also been chosen by Asplund et al. (2000) to model hydrodynamic convection in metal-poor stars. Photospheric su ...
here - Georgia Tech Astronomy Club
... a. Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b. Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter. c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. ...
... a. Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b. Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter. c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. ...
Mission Possible: Voyage to the Stars
... diagram. One can see the different branches labeled and notice the length of the main sequence. One can also distinguish the different temperatures of the stars by looking at the colors that are represented on the diagram. ...
... diagram. One can see the different branches labeled and notice the length of the main sequence. One can also distinguish the different temperatures of the stars by looking at the colors that are represented on the diagram. ...
telescopes - NPZ Optics
... the mounts on a pier or tripod. Different models of telescopes are provided with different mounts. The mount MT-1 has manual slowmotion controls on both axes and is used with TAL-1 telescope. For the first sight-in on, the object, loosen the telescope s Dec. and R.A. locks (1) and move the telesco ...
... the mounts on a pier or tripod. Different models of telescopes are provided with different mounts. The mount MT-1 has manual slowmotion controls on both axes and is used with TAL-1 telescope. For the first sight-in on, the object, loosen the telescope s Dec. and R.A. locks (1) and move the telesco ...
Celestron Manual
... To help find objects in the sky, astronomers use a celestial coordinate system that is similar to our geographical coordinate system here on Earth. The celestial coordinate system has poles, lines of longitude and latitude, and an equator. For the most part, these remain fixed against the background ...
... To help find objects in the sky, astronomers use a celestial coordinate system that is similar to our geographical coordinate system here on Earth. The celestial coordinate system has poles, lines of longitude and latitude, and an equator. For the most part, these remain fixed against the background ...
Milky Way Galaxy
... called the Local Group which contains about 40 galaxies. The largest member of the Local Group is M 31, with the Milky Way coming in second in size. (NOAO/AURA Photo) ...
... called the Local Group which contains about 40 galaxies. The largest member of the Local Group is M 31, with the Milky Way coming in second in size. (NOAO/AURA Photo) ...
Properties of Galactic early-type O
... of HD 15570; only strong lines such as C iv λλ1548-1550 or N iv λ1718 can be used safely for this star. All stars but HD 66811 were observed with FUSE through the LWRS 30 × 30 aperture. The nominal spectral resolution is 20 000, or about 20 km s−1 , and the wavelength range extends from 905 Å to ...
... of HD 15570; only strong lines such as C iv λλ1548-1550 or N iv λ1718 can be used safely for this star. All stars but HD 66811 were observed with FUSE through the LWRS 30 × 30 aperture. The nominal spectral resolution is 20 000, or about 20 km s−1 , and the wavelength range extends from 905 Å to ...
INSTRUCTION MANUAL
... sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your NexStar, so you should keep this manual handy until you have fully ma ...
... sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your NexStar, so you should keep this manual handy until you have fully ma ...
Stardust--Snapshots of Stars
... stars. However, some of the grains found in the study do not fit within this framework, and require different astrophysical origins. One grain has massive enrichments in 17O, 25Mg, and 26Mg, which are considered isotopic signatures of condensation from nova ejecta. Two other spinel grains have large ...
... stars. However, some of the grains found in the study do not fit within this framework, and require different astrophysical origins. One grain has massive enrichments in 17O, 25Mg, and 26Mg, which are considered isotopic signatures of condensation from nova ejecta. Two other spinel grains have large ...
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.