Building galaxies Hunt, Leslie Kipp
... that atomic gas mass fraction also varies along the Hubble sequence. On the other hand, the massto-light ratio measured in the B band remains relatively constant with morphology, even toward the very late spiral types (although see Burstein 1982). With data from Roberts & Haynes (1994), Figure 3 sho ...
... that atomic gas mass fraction also varies along the Hubble sequence. On the other hand, the massto-light ratio measured in the B band remains relatively constant with morphology, even toward the very late spiral types (although see Burstein 1982). With data from Roberts & Haynes (1994), Figure 3 sho ...
Star Trek ObservING List - Adirondack astronomy retreat
... It is said that Epsilon Eridani really has a planet. It was discovered by a man named W. Cochran on August 7th, 2000. His name is a real coincidence because a man named Zefram Cochrane, according to Star Trek TNG First Contact movie and TOS episode Metamorphosis, was the inventor of the warp drive w ...
... It is said that Epsilon Eridani really has a planet. It was discovered by a man named W. Cochran on August 7th, 2000. His name is a real coincidence because a man named Zefram Cochrane, according to Star Trek TNG First Contact movie and TOS episode Metamorphosis, was the inventor of the warp drive w ...
Using Parallax to Measure the Distance of Stars
... distances, with radar being useful nearby (for example, the Moon), and the Hubble Law being useful at the farthest distances. In this exercise, we investigate the use of the trigonometric or measured parallax method to determine distances. Even when observed with the largest telescopes, stars are st ...
... distances, with radar being useful nearby (for example, the Moon), and the Hubble Law being useful at the farthest distances. In this exercise, we investigate the use of the trigonometric or measured parallax method to determine distances. Even when observed with the largest telescopes, stars are st ...
Parallax and Aberration - Berry College Professional WordPress Sites
... the StellarAberration3D program.3 This program was used to construct plots of the apparent declination of Gamma Draconis and Alkaid, using Bradley’s theory of stellar aberration, as shown in Fig. 5. A comparison with Fig. 4 shows that the pattern predicted by Bradley’s theory fits his observational ...
... the StellarAberration3D program.3 This program was used to construct plots of the apparent declination of Gamma Draconis and Alkaid, using Bradley’s theory of stellar aberration, as shown in Fig. 5. A comparison with Fig. 4 shows that the pattern predicted by Bradley’s theory fits his observational ...
Evolution of galaxy morphology - Lecture 1 - NCRA-TIFR
... they show a broad range in their physical properties Understanding of galaxy formation and evolution is one of the main outstanding problems in modern cosmology there are ∼ 1011 galaxies in the observable universe typical total mass of 108 − 1012 M ncralogo ...
... they show a broad range in their physical properties Understanding of galaxy formation and evolution is one of the main outstanding problems in modern cosmology there are ∼ 1011 galaxies in the observable universe typical total mass of 108 − 1012 M ncralogo ...
Night Sky II - Cornell Astronomy
... Each night a given object will pass over the meridian 4 minutes earlier. This corresponds to 2 hours earlier each month, or 24 hours in one year. Objects rise and set earlier each day. At a given time, the RA crossing the meridian increases by 4 min. per day. ...
... Each night a given object will pass over the meridian 4 minutes earlier. This corresponds to 2 hours earlier each month, or 24 hours in one year. Objects rise and set earlier each day. At a given time, the RA crossing the meridian increases by 4 min. per day. ...
hr diagrams of star clusters
... Starting the Program .................................................................................................................................................. 8 Accessing the Help Files ......................................................................................................... ...
... Starting the Program .................................................................................................................................................. 8 Accessing the Help Files ......................................................................................................... ...
THE PERIOD OF ROTATION OF THE SUN
... Starting the Program .................................................................................................................................................. 8 Accessing the Help Files ......................................................................................................... ...
... Starting the Program .................................................................................................................................................. 8 Accessing the Help Files ......................................................................................................... ...
FIRST STELLAR ABUNDANCES IN THE DWARF IRREGULAR
... 1985). So far, only a very limited number of elements can be examined and quantified when using this approach. The chemical evolution of a galaxy depends on the contributions of all its constituents, e.g., SNe type Ia and II, high mass stars, thermal pulsing in low and intermediate mass AGB stars. T ...
... 1985). So far, only a very limited number of elements can be examined and quantified when using this approach. The chemical evolution of a galaxy depends on the contributions of all its constituents, e.g., SNe type Ia and II, high mass stars, thermal pulsing in low and intermediate mass AGB stars. T ...
Carbon-enhanced metal-poor stars in dwarf galaxies
... From Fig. 1 we can note that stars at [Fe/H]≤ −4.5 have only been found in the Galactic halo. Moreover, we can see that the frequency of CEMP-no stars among these “hyper-iron-poor stars” is extremely high: 8 out of 9 stars at [Fe/H]≤ −4.5 are CEMP-no stars. These objects have peculiar chemical abund ...
... From Fig. 1 we can note that stars at [Fe/H]≤ −4.5 have only been found in the Galactic halo. Moreover, we can see that the frequency of CEMP-no stars among these “hyper-iron-poor stars” is extremely high: 8 out of 9 stars at [Fe/H]≤ −4.5 are CEMP-no stars. These objects have peculiar chemical abund ...
doc
... Turning to the size and frequency of socio-political units, although this relationship may no longer hold true, it certainly did so up until about A. D. 1000. The autonomous village, the smallest of political units, was the most common. There were more of them than of multi-village chiefdoms, and mo ...
... Turning to the size and frequency of socio-political units, although this relationship may no longer hold true, it certainly did so up until about A. D. 1000. The autonomous village, the smallest of political units, was the most common. There were more of them than of multi-village chiefdoms, and mo ...
Test Ch. 27 Multiple Choice Identify the choice that best completes
... D. main-sequence 16. A plot of surface temperatures of stars against their absolute magnitude is called A. an H-R diagram. B. a Cepheid variable. C. a constellation map. D. a spectrum. 17. Which of the following stages is the earliest in the development of a star? A. neutron star B. protostar C. neb ...
... D. main-sequence 16. A plot of surface temperatures of stars against their absolute magnitude is called A. an H-R diagram. B. a Cepheid variable. C. a constellation map. D. a spectrum. 17. Which of the following stages is the earliest in the development of a star? A. neutron star B. protostar C. neb ...
Astronomy 10 Measuring Stars
... distance seperating Sirius A and Sirius B can be found by: r = d × θ, where r is the actual physical distance between the two stars (in AU), d is the distance they are from us (in parsecs), and θ is the apparant angular separation of the pair (in arcseconds). Given that Sirius A and Sirius B appear ...
... distance seperating Sirius A and Sirius B can be found by: r = d × θ, where r is the actual physical distance between the two stars (in AU), d is the distance they are from us (in parsecs), and θ is the apparant angular separation of the pair (in arcseconds). Given that Sirius A and Sirius B appear ...
Telescopic Drawings or Photographs of Celestial
... • Two tasks that make up 25% of GCSE marks • An unaided observation and an aided observation chosen from the approved list • Unaided and aided observations can’t be from same row of approved list • If more than one task completed the best mark counts • Each task marked using the same markscheme givi ...
... • Two tasks that make up 25% of GCSE marks • An unaided observation and an aided observation chosen from the approved list • Unaided and aided observations can’t be from same row of approved list • If more than one task completed the best mark counts • Each task marked using the same markscheme givi ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.