Series Telescopes INSTRUCTION MANUAL
... light-gathering characteristics you can take a serious interest in deep space astronomy even on a modest budget. Newtonian Reflector telescopes do require more care and maintenance because the primary mirror is exposed to air and dust. However, this small drawback does not hamper this type of telesc ...
... light-gathering characteristics you can take a serious interest in deep space astronomy even on a modest budget. Newtonian Reflector telescopes do require more care and maintenance because the primary mirror is exposed to air and dust. However, this small drawback does not hamper this type of telesc ...
Direct Imaging of Exoplanets - American Museum of Natural History
... Currently, the techniques of radial velocity (RV), transits, and gravitational lensing are more productive than direct imaging. Remarkably, these techniques, including astrometry and direct imaging, perform nearly independent roles for exoplanet science, so each of them is valuable. Radial velocity ...
... Currently, the techniques of radial velocity (RV), transits, and gravitational lensing are more productive than direct imaging. Remarkably, these techniques, including astrometry and direct imaging, perform nearly independent roles for exoplanet science, so each of them is valuable. Radial velocity ...
exploring fundamental physics with neutron stars
... macroscopic behaviour of objects strongly bound by gravity in particular. Here, instead, we introduce the subject of neutron stars by first showing how some of their observed macroscopic properties, and the internal physical conditions we infer from them, are easily explained as a consequence of the ...
... macroscopic behaviour of objects strongly bound by gravity in particular. Here, instead, we introduce the subject of neutron stars by first showing how some of their observed macroscopic properties, and the internal physical conditions we infer from them, are easily explained as a consequence of the ...
Astronomy Astrophysics
... present the results of the analysis of the NLTE cores of 22 DA white dwarfs covering the temperature range from 6800 K to 20 000 K. This is an extension of our previous investigation (Heber et al. 1997, henceforth Paper I) to lower temperatures. The analysis is based on the spectra obtained by Reid ...
... present the results of the analysis of the NLTE cores of 22 DA white dwarfs covering the temperature range from 6800 K to 20 000 K. This is an extension of our previous investigation (Heber et al. 1997, henceforth Paper I) to lower temperatures. The analysis is based on the spectra obtained by Reid ...
EXPLORING FUNDAMENTAL PHYSICS WITH NEUTRON STARS
... macroscopic behaviour of objects strongly bound by gravity in particular. Here, instead, we introduce the subject of neutron stars by first showing how some of their observed macroscopic properties, and the internal physical conditions we infer from them, are easily explained as a consequence of the ...
... macroscopic behaviour of objects strongly bound by gravity in particular. Here, instead, we introduce the subject of neutron stars by first showing how some of their observed macroscopic properties, and the internal physical conditions we infer from them, are easily explained as a consequence of the ...
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 ...
Rotation Periods and Relative Ages of Solar-Type Stars
... project. To begin the search, data points were organized into seasons, with a season defined as an interval containing at least 30 data points and separated from other intervals by at least 80 days. Determining Prot required various techniques. The primary means of obtaining Prot was the use of the ...
... project. To begin the search, data points were organized into seasons, with a season defined as an interval containing at least 30 data points and separated from other intervals by at least 80 days. Determining Prot required various techniques. The primary means of obtaining Prot was the use of the ...
Open clusters in the Third Galactic Quadrant III. Alleged binary
... metal content used to compute color excesses and distance moduli. Despite the special care put in fitting all the potential cluster members, some sequences are not satisfactorily reproduced by one single isochrone, as said above, and a range of them has been indicated in each cluster of Table 4. Kno ...
... metal content used to compute color excesses and distance moduli. Despite the special care put in fitting all the potential cluster members, some sequences are not satisfactorily reproduced by one single isochrone, as said above, and a range of them has been indicated in each cluster of Table 4. Kno ...
The physics of star formation
... including our own Milky Way galaxy, but this nuclear star formation is often obscured by interstellar dust and its existence is inferred only from the infrared radiation emitted by dust heated by the embedded young stars. The gas from which stars form, whether in spiral arms or in galactic nuclei, i ...
... including our own Milky Way galaxy, but this nuclear star formation is often obscured by interstellar dust and its existence is inferred only from the infrared radiation emitted by dust heated by the embedded young stars. The gas from which stars form, whether in spiral arms or in galactic nuclei, i ...
The physics of star formation - Yale Astronomy
... including our own Milky Way galaxy, but this nuclear star formation is often obscured by interstellar dust and its existence is inferred only from the infrared radiation emitted by dust heated by the embedded young stars. The gas from which stars form, whether in spiral arms or in galactic nuclei, i ...
... including our own Milky Way galaxy, but this nuclear star formation is often obscured by interstellar dust and its existence is inferred only from the infrared radiation emitted by dust heated by the embedded young stars. The gas from which stars form, whether in spiral arms or in galactic nuclei, i ...
ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater⋆†
... shown in Figs 3, 7 and 8. While overall, the innards of Crater appear resolved in the ACAM images, the resulting photometry does suffer from blending problems to some extent. Therefore, in the following analysis we use two versions of the WHT stellar catalogues. First, the most stringent sample (sam ...
... shown in Figs 3, 7 and 8. While overall, the innards of Crater appear resolved in the ACAM images, the resulting photometry does suffer from blending problems to some extent. Therefore, in the following analysis we use two versions of the WHT stellar catalogues. First, the most stringent sample (sam ...
{2.} and {4.}
... formulas on paper. The Eternal Almanac’s on the BD, Aries months are equal in degrees to the start of the same month in the almanac. Each of the degrees, days on the BD, after the month is equal to each day reading in the almanac at 00 Greenwich Mean Time for that day. . By reading the GMT on the AS ...
... formulas on paper. The Eternal Almanac’s on the BD, Aries months are equal in degrees to the start of the same month in the almanac. Each of the degrees, days on the BD, after the month is equal to each day reading in the almanac at 00 Greenwich Mean Time for that day. . By reading the GMT on the AS ...
A Search for Extrasolar Planets Using Echoes Produced in Flare
... later CCD detectors) led to several other types of categorizations of the variable nature of stars. For example in 1949, astronomers Gordon and Kron discovered a flare event from an eclipsing binary system now called AD Leonis (Henden and Kaitchuck, 1982). Another multi-star system BY Draconis was d ...
... later CCD detectors) led to several other types of categorizations of the variable nature of stars. For example in 1949, astronomers Gordon and Kron discovered a flare event from an eclipsing binary system now called AD Leonis (Henden and Kaitchuck, 1982). Another multi-star system BY Draconis was d ...
Planet formation around stars of various masses: The snow line and
... range of extra-solar planet hosts, (ii) observed trends with stellar mass, such as accretion rate and disk mass, and (iii) theoretical relations with variables that change with stellar mass, such as orbital period and isolation mass. This extension of Solar System theory to a range of spectral types ...
... range of extra-solar planet hosts, (ii) observed trends with stellar mass, such as accretion rate and disk mass, and (iii) theoretical relations with variables that change with stellar mass, such as orbital period and isolation mass. This extension of Solar System theory to a range of spectral types ...
![Module 4.1 - The Scale of the Universe [slide 1] We now turn to](http://s1.studyres.com/store/data/002846843_1-9e0ec9d1a2abbbab3c0d406694bfc4e2-300x300.png)
Module 4.1 - The Scale of the Universe [slide 1] We now turn to
... Since all of them were roughly the same distance, apparent magnitude would correlate with period and then they understood that comparing that with nearby Cepheids they can find out how far the Magellanic Couds are. Cepheids are important because they are bright and so we can see them far away, we c ...
... Since all of them were roughly the same distance, apparent magnitude would correlate with period and then they understood that comparing that with nearby Cepheids they can find out how far the Magellanic Couds are. Cepheids are important because they are bright and so we can see them far away, we c ...
Planet Hunters Education Guide
... them particularly adept at identifying faces, objects, words and sounds. Computers are now sometimes being used to identify faces, but this extremely expensive technology still only works in ideal conditions and generally fails where lighting is poor or where faces are turned to the side. Images use ...
... them particularly adept at identifying faces, objects, words and sounds. Computers are now sometimes being used to identify faces, but this extremely expensive technology still only works in ideal conditions and generally fails where lighting is poor or where faces are turned to the side. Images use ...
Binarity in carbon-enhanced metal-poor stars
... 3 NRC Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada 2 McDonald ...
... 3 NRC Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada 2 McDonald ...
Homework Assignment 6 — Solutions
... T = 25, 000 K gives b = 2.9 × 104 1, so we expect that our graph will go from y = NII /Nt ≈ 0 at the low temperature end to NII /Nt ≈ 1 at the high temperature end, with a transition at temperatures where b ≈ 1 (in fact, NII /Nt = 0.5 when b = 0.5). Looking at the plot, we see that these predictio ...
... T = 25, 000 K gives b = 2.9 × 104 1, so we expect that our graph will go from y = NII /Nt ≈ 0 at the low temperature end to NII /Nt ≈ 1 at the high temperature end, with a transition at temperatures where b ≈ 1 (in fact, NII /Nt = 0.5 when b = 0.5). Looking at the plot, we see that these predictio ...
1 Pau Amaro Seoane - modest 15-s
... of turbulent molecular clouds. The stars are assumed to form in the densest regions in the collapsing cloud after an initial free-fall times of the molecular cloud. The dynamical evolution of these stellar distributions are continued by means of direct N-body simulations. The molecular clouds typica ...
... of turbulent molecular clouds. The stars are assumed to form in the densest regions in the collapsing cloud after an initial free-fall times of the molecular cloud. The dynamical evolution of these stellar distributions are continued by means of direct N-body simulations. The molecular clouds typica ...
P7 Further Physics
... When I look at these stars some appear brighter than others. This because they are either brighter stars or closer to me. For example, the star Antares is 10,000 times brighter than the sun but it is 500 light years away from me, so it is only the 15th brightest star in the night sky. ...
... When I look at these stars some appear brighter than others. This because they are either brighter stars or closer to me. For example, the star Antares is 10,000 times brighter than the sun but it is 500 light years away from me, so it is only the 15th brightest star in the night sky. ...
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.