PDF - Department of Statistics
... off. The resulting “exposures” are very long: data will be read out continuously and we will only close the shutters when we wish to monitor another star field. Figure 3 shows the data-taking process at two different time-points. Figure 4 shows a section of a simulated zipper mode image. The alterna ...
... off. The resulting “exposures” are very long: data will be read out continuously and we will only close the shutters when we wish to monitor another star field. Figure 3 shows the data-taking process at two different time-points. Figure 4 shows a section of a simulated zipper mode image. The alterna ...
A Walk through the Southern Sky: A Guide to Stars and
... brighter than Rigel in Orion. However, Rigel is actually thousands of times brighter than Sirius. It appears fainter because it is over a thousand light years away, while Sirius is only 81⁄2 light years from us. We measure the brightness of the stars as seen with the naked eye on a scale called the ...
... brighter than Rigel in Orion. However, Rigel is actually thousands of times brighter than Sirius. It appears fainter because it is over a thousand light years away, while Sirius is only 81⁄2 light years from us. We measure the brightness of the stars as seen with the naked eye on a scale called the ...
identifying seasonal stars in kaurna astronomical traditions
... celestial objects that are dimmer than this magnitude limit tend to be star clusters (e.g. the Pleiades), the Milky Way (including the dark spaces within it), close pairs of stars (e.g. Shaula and Lesath in Scorpius) or stars that form an asterism (e.g. Crux, and the Belt and scabbard of Orion). The ...
... celestial objects that are dimmer than this magnitude limit tend to be star clusters (e.g. the Pleiades), the Milky Way (including the dark spaces within it), close pairs of stars (e.g. Shaula and Lesath in Scorpius) or stars that form an asterism (e.g. Crux, and the Belt and scabbard of Orion). The ...
... 3. THE RR LYRAE STARS IN M15 In Clement’s (2002) data base of variables stars, a total of 158 variable stars are known, from which approximately 104 are RR Lyrae type stars. In this work, 33 known RR Lyrae stars, identified in Figs. 1 and 2 and listed in Table 4, have been studied. For all the stars ...
Stellar populations
... The locus of stars which have just started to shine • Subgiant branch Stars that have just exhausted H in their cores, and are now moving off the main sequence • Red giants Evolved stars in upper right-hand part of diagram with either He cores, or they are burning He to C and O in their cores. They ...
... The locus of stars which have just started to shine • Subgiant branch Stars that have just exhausted H in their cores, and are now moving off the main sequence • Red giants Evolved stars in upper right-hand part of diagram with either He cores, or they are burning He to C and O in their cores. They ...
Astronomical Picture of the Day
... Elliptical galaxies are unlike spiral galaxies and hence unlike our own Milky Way Galaxy. The giant elliptical galaxy named NGC 4881 on the upper left lies at the edge of the giant Coma Cluster of Galaxies. Elliptical galaxies are ellipsoidal in shape, contain no spiral arms, contain little interste ...
... Elliptical galaxies are unlike spiral galaxies and hence unlike our own Milky Way Galaxy. The giant elliptical galaxy named NGC 4881 on the upper left lies at the edge of the giant Coma Cluster of Galaxies. Elliptical galaxies are ellipsoidal in shape, contain no spiral arms, contain little interste ...
Galaxy Hunters Article, Cosmology Information, First Star Facts
... largest meetings ever devoted to the origin of galaxies. The first star was born about 14 billion years ago, Abel believes, in a universe that was more mysterious but also far simpler than our own. Smaller and denser than today, the universe was pitch-black and contained mostly hydrogen and helium w ...
... largest meetings ever devoted to the origin of galaxies. The first star was born about 14 billion years ago, Abel believes, in a universe that was more mysterious but also far simpler than our own. Smaller and denser than today, the universe was pitch-black and contained mostly hydrogen and helium w ...
Document
... passive evolution of stellar populations formed at z>2-3. Slope is primarily driven by mass-metallicity relation. Morphologically (HST)-selected Es and S0s (Bower et al. 1992, Aragon-Salamanca et al. 1993, Rakos et al. 1995, Stanford et al. 1995, 1996, 1997, 1998, Schade et al. 1996, 1997, Ellis et ...
... passive evolution of stellar populations formed at z>2-3. Slope is primarily driven by mass-metallicity relation. Morphologically (HST)-selected Es and S0s (Bower et al. 1992, Aragon-Salamanca et al. 1993, Rakos et al. 1995, Stanford et al. 1995, 1996, 1997, 1998, Schade et al. 1996, 1997, Ellis et ...
Alpha Centauri
... FAMOUS FOR: It’s the 3rd brightest star in the sky. And a member of the triple star system. ...
... FAMOUS FOR: It’s the 3rd brightest star in the sky. And a member of the triple star system. ...
Ch17_Galaxies
... Messier cataloged several “fuzzy” objects to be avoided in comet searches – many turned out to be galaxies (M31 = Andromeda) ...
... Messier cataloged several “fuzzy” objects to be avoided in comet searches – many turned out to be galaxies (M31 = Andromeda) ...
KINEMATIC DISCOVERY OF A STELLAR STREAM LOCATED IN
... The metal-poor giant stars selected using the velocity criteria (i.e., red points in the top panels of Figure 3) are mostly clustered around [(g − r)0 , g0 ] = [0.55, 18.8] in the on-stream field (top left panel of Figure 3), while the more metal-rich stars (light blue points) scatter throughout the ...
... The metal-poor giant stars selected using the velocity criteria (i.e., red points in the top panels of Figure 3) are mostly clustered around [(g − r)0 , g0 ] = [0.55, 18.8] in the on-stream field (top left panel of Figure 3), while the more metal-rich stars (light blue points) scatter throughout the ...
21. Galaxy Evolution Agenda The Monty Hall Problem/Paradox 21.1
... • In the early 1960s, Maarten Schmidt identified the radio source 3C 273 with a faint, blue star. • the “star’s” spectrum displayed emission lines • the wavelengths of these lines matched no known element ...
... • In the early 1960s, Maarten Schmidt identified the radio source 3C 273 with a faint, blue star. • the “star’s” spectrum displayed emission lines • the wavelengths of these lines matched no known element ...
Compare/Order Decimals
... Look for the first place where the digits are different. 0 is less than 5. ...
... Look for the first place where the digits are different. 0 is less than 5. ...
Seeds of a Tychonic Revolution: Telescopic Observations of the
... to replace the Aristotelian-Ptolemaic world system. These two systems are observationally equivalent as regards the sun, moon, and planets. Mareo can obtain the data needed to decide between these two systems only by observing the stars. For example, if Mareo detects annual stellar parallax, that wo ...
... to replace the Aristotelian-Ptolemaic world system. These two systems are observationally equivalent as regards the sun, moon, and planets. Mareo can obtain the data needed to decide between these two systems only by observing the stars. For example, if Mareo detects annual stellar parallax, that wo ...
PH607lec08
... The Hercules Cluster (below), about 200 Mpc distant. This cluster is loaded with gas and dust rich, star forming, spiral galaxies but has relatively few elliptical galaxies, which lack gas and dust and the associated newborn stars. Colours in the composite image show the star forming galaxies with ...
... The Hercules Cluster (below), about 200 Mpc distant. This cluster is loaded with gas and dust rich, star forming, spiral galaxies but has relatively few elliptical galaxies, which lack gas and dust and the associated newborn stars. Colours in the composite image show the star forming galaxies with ...
EQUINOCTIAL vLOBE ·
... Fig. 1. Let P be the pole of the ecliptic CV" $ � vY. N the pole of the equator CV" �, cutting the ecliptic in
... Fig. 1. Let P be the pole of the ecliptic CV" $ � vY. N the pole of the equator CV" �, cutting the ecliptic in
November, 2015 - The Baton Rouge Astronomical Society
... Al Rischa (Alpha Psc), Alrescha, Alrisha,”The Cord”, Struve 202, is a close binary star. Alpha Psc A, mag. 4.33, 02 02 02.80 +02 45 49.5; Alpha Psc B, mag. 5.23, 02 02 02.80 +02 45 49.0, are both blue-white main sequence stars with a separation of 1.8 arc-seconds, and an orbital period of 933 years. ...
... Al Rischa (Alpha Psc), Alrescha, Alrisha,”The Cord”, Struve 202, is a close binary star. Alpha Psc A, mag. 4.33, 02 02 02.80 +02 45 49.5; Alpha Psc B, mag. 5.23, 02 02 02.80 +02 45 49.0, are both blue-white main sequence stars with a separation of 1.8 arc-seconds, and an orbital period of 933 years. ...
Lecture 8: Spiral Structure
... explaining the prominent features of number of points. It does not explain the origin of the density waves. Nor does it clearly work out what keeps them going (how the density wave is sustained through the life of the galaxy). As the density ripple through the interstellar medium, they lose energy a ...
... explaining the prominent features of number of points. It does not explain the origin of the density waves. Nor does it clearly work out what keeps them going (how the density wave is sustained through the life of the galaxy). As the density ripple through the interstellar medium, they lose energy a ...
Downloadable Full Text
... The UFD Reticulum II (Ret II) was recently discovered with Dark Energy Survey data12,13 and confirmed to be one of the most metal-poor galaxies known14. On 1-4 Oct 2015, we obtained high-resolution spectra of the nine brightest member stars in Ret II (see Table 1, Extended Data Figure 1). The abunda ...
... The UFD Reticulum II (Ret II) was recently discovered with Dark Energy Survey data12,13 and confirmed to be one of the most metal-poor galaxies known14. On 1-4 Oct 2015, we obtained high-resolution spectra of the nine brightest member stars in Ret II (see Table 1, Extended Data Figure 1). The abunda ...
Astrophysics Pristine CNO abundances from Magellanic Cloud B stars
... In contrast to the paucity of data on dwarfs, many MC supergiants – from spectral type O to K – have been studied in detail (e.g. Haser et al 1998: O-type, Paper I: B-type, Venn 1999b: A-type, Andrievsky et al. 2001: F-type, Hill & Spite 1999: K-type). Obviously, in trying to understand the CNO patt ...
... In contrast to the paucity of data on dwarfs, many MC supergiants – from spectral type O to K – have been studied in detail (e.g. Haser et al 1998: O-type, Paper I: B-type, Venn 1999b: A-type, Andrievsky et al. 2001: F-type, Hill & Spite 1999: K-type). Obviously, in trying to understand the CNO patt ...
What To See Telescope(Jul-Sept) v1 - One
... stars chi (χ) and zeta (ζ) Draconis, about 1/3 of the way from the former to the latter. Unlike many objects of comparable brightness, NGC 6503 was discovered quite late. The German university student Arthur von Auwers first saw the galaxy with a 2.6-inch telescope in 1854. ...
... stars chi (χ) and zeta (ζ) Draconis, about 1/3 of the way from the former to the latter. Unlike many objects of comparable brightness, NGC 6503 was discovered quite late. The German university student Arthur von Auwers first saw the galaxy with a 2.6-inch telescope in 1854. ...
PDF
... morphology by exploiting deep HST images spanning a substantial range in look-back time. Prior to HST, attempts had been made from the best ground-based observatories to resolve and classify distant galaxies but, even in the best conditions, galaxies as close as redshifts of 0.3–0.5 (corresponding t ...
... morphology by exploiting deep HST images spanning a substantial range in look-back time. Prior to HST, attempts had been made from the best ground-based observatories to resolve and classify distant galaxies but, even in the best conditions, galaxies as close as redshifts of 0.3–0.5 (corresponding t ...
sections 23-25 powerpoint
... Lenticular galaxies get their name because they are “lenslike,” but are more like spiral and barred spiral galaxies in possessing a flattened disk, rather than like elliptical galaxies which mostly possess ellipsoidal symmetry. The distinguishing feature of lenticulars is that they do not have spir ...
... Lenticular galaxies get their name because they are “lenslike,” but are more like spiral and barred spiral galaxies in possessing a flattened disk, rather than like elliptical galaxies which mostly possess ellipsoidal symmetry. The distinguishing feature of lenticulars is that they do not have spir ...
Hertzsprung–Russell diagram - Wikipedia, the free encyclopedia
... Contemplation of the diagram led astronomers to speculate that it strip and its components highlighted. might demonstrate stellar evolution, the main suggestion being that stars collapsed from red giants to dwarf stars, then moving down along the line of the main sequence in the course of their life ...
... Contemplation of the diagram led astronomers to speculate that it strip and its components highlighted. might demonstrate stellar evolution, the main suggestion being that stars collapsed from red giants to dwarf stars, then moving down along the line of the main sequence in the course of their life ...
here
... illuminated, 30.26 a.u., Aquarius), and Pluto on May 16th (magnitude +14.2, 0.1", 100% illuminated, 32.72 a.u., Sagittarius). In the evening, Mars is in the northeast and Jupiter in the southeast. Jupiter is located in the southwest and Saturn in the southeast at midnight. Mercury and Venus can be ...
... illuminated, 30.26 a.u., Aquarius), and Pluto on May 16th (magnitude +14.2, 0.1", 100% illuminated, 32.72 a.u., Sagittarius). In the evening, Mars is in the northeast and Jupiter in the southeast. Jupiter is located in the southwest and Saturn in the southeast at midnight. Mercury and Venus can be ...
Aries (constellation)
Aries is one of the constellations of the zodiac. It is located in the northern celestial hemisphere between Pisces to the west and Taurus to the east. The name Aries is Latin for ram, and its symbol is 20px (Unicode ♈), representing a ram's horns. It is one of the 48 constellations described by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. It is a mid-sized constellation, ranking 39th overall size, with an area of 441 square degrees (1.1% of the celestial sphere).Although Aries came to represent specifically the ram whose fleece became the Golden Fleece of Ancient Greek mythology, it has represented a ram since late Babylonian times. Before that, the stars of Aries formed a farmhand. Different cultures have incorporated the stars of Aries into different constellations including twin inspectors in China and a porpoise in the Marshall Islands. Aries is a relatively dim constellation, possessing only four bright stars: Hamal (Alpha Arietis, second magnitude), Sheratan (Beta Arietis, third magnitude), Mesarthim (Gamma Arietis, fourth magnitude), and 41 Arietis (also fourth magnitude). The few deep-sky objects within the constellation are quite faint and include several pairs of interacting galaxies. Several meteor showers appear to radiate from Aries, including the Daytime Arietids and the Epsilon Arietids.