November - Hawaiian Astronomical Society
... “lace like.” Unlike most open clusters, NGC 7789 is a rich cluster, which is best observed with higher powers. Jane notes that at 200x there is a noticeable dark spot in the center of the cluster. I found that even at 300x the cluster only looks more interesting. M11, the “Wild Duck” cluster reacts ...
... “lace like.” Unlike most open clusters, NGC 7789 is a rich cluster, which is best observed with higher powers. Jane notes that at 200x there is a noticeable dark spot in the center of the cluster. I found that even at 300x the cluster only looks more interesting. M11, the “Wild Duck” cluster reacts ...
J: Chapter 4: Stars and Galaxies
... Measurement in Space How do scientists determine distance to stars from the solar system that Earth is part of? One way is to measure its parallax—the apparent shift in the position of an object when viewed from two different positions. Extend your arm and look at your thumb first with your left ey ...
... Measurement in Space How do scientists determine distance to stars from the solar system that Earth is part of? One way is to measure its parallax—the apparent shift in the position of an object when viewed from two different positions. Extend your arm and look at your thumb first with your left ey ...
A Hero`s Little Horse: Discovery of a Dissolving Star Cluster in
... elliptical annuli around Kim 1, where r is the elliptical radius. For the center of the overdensity we adopted the centre of mass calculated in terms of the normalised signals on the array into which the stars were binned and smoothed as described in Section 2. We derive an ellipticity = 0.42 ± 0. ...
... elliptical annuli around Kim 1, where r is the elliptical radius. For the center of the overdensity we adopted the centre of mass calculated in terms of the normalised signals on the array into which the stars were binned and smoothed as described in Section 2. We derive an ellipticity = 0.42 ± 0. ...
10 - Keele Astrophysics Group
... spectrum and realised that there was a clear pattern of absorption lines superimposed on the continuum. By the end of that century, astronomers were able to examine the spectra of stars in large numbers and realised that stars could be divided into groups according to the general appearance of their ...
... spectrum and realised that there was a clear pattern of absorption lines superimposed on the continuum. By the end of that century, astronomers were able to examine the spectra of stars in large numbers and realised that stars could be divided into groups according to the general appearance of their ...
printer-friendly version of benchmark
... Students know the Sun is a medium-sized star located in the Milky Way Galaxy, part of which can be seen as a glowing band of light spanning the clear night sky. W/S Common misconceptions associated with this benchmark 1. Students have a misconception that all stars are the same size. When viewing th ...
... Students know the Sun is a medium-sized star located in the Milky Way Galaxy, part of which can be seen as a glowing band of light spanning the clear night sky. W/S Common misconceptions associated with this benchmark 1. Students have a misconception that all stars are the same size. When viewing th ...
Using photometric analysis to determine characteristics of the V
... The main purpose of the experiment as described above is to characterize the newly found nova V‐2491 in the Cygnus constellation as show in figure 2. In order to do so, frames of that particular nova need to be taken over several nights and then analyze as a collecti ...
... The main purpose of the experiment as described above is to characterize the newly found nova V‐2491 in the Cygnus constellation as show in figure 2. In order to do so, frames of that particular nova need to be taken over several nights and then analyze as a collecti ...
17_LectureOutline
... These are the 80 closest stars to us; note the dashed lines of constant radius. The darkened curve is called the main sequence, as this is where most stars are. Also indicated is the white dwarf region; these stars are hot but not very luminous, as they are quite small. © 2014 Pearson Education, Inc ...
... These are the 80 closest stars to us; note the dashed lines of constant radius. The darkened curve is called the main sequence, as this is where most stars are. Also indicated is the white dwarf region; these stars are hot but not very luminous, as they are quite small. © 2014 Pearson Education, Inc ...
Stellar Populations of Galaxies- 2 Lectures H
... The shape depends on the metallicity of the stars (Demarque et al 2004) One can determine the 'age' of the system by fitting an isochrone (if one has data for individual stars) or by calculating some average property (color/spectrum) averaging over the isochrone - degeneracy problems with age and me ...
... The shape depends on the metallicity of the stars (Demarque et al 2004) One can determine the 'age' of the system by fitting an isochrone (if one has data for individual stars) or by calculating some average property (color/spectrum) averaging over the isochrone - degeneracy problems with age and me ...
Eclipsing Binary Stars as Astrophysical Laboratories
... minimum is easily recognizable, as is the secondary minimum. The solid line is just the best fit to the data. This light curve tells me right away that the stars must be well separated from each other because first there is the primary eclipse, then a long time of no eclipse, and then the secondary ...
... minimum is easily recognizable, as is the secondary minimum. The solid line is just the best fit to the data. This light curve tells me right away that the stars must be well separated from each other because first there is the primary eclipse, then a long time of no eclipse, and then the secondary ...
Star Trek ObservING List - Adirondack astronomy retreat
... author of the episode) had suspected. ...
... author of the episode) had suspected. ...
2-star-life-cycle-and-star-classification
... massive than 10 M Sun . A) Red Dwarfs B) White Dwarfs C) Red Giants D) Blue Supergiants 39. Which star’s surface temperature is closest to the temperature at the boundary between Earth’s mantle and core? A) Sirius B) Rigel C) the Sun D) Betelgeuse 40. According to the graph, the Sun is classified as ...
... massive than 10 M Sun . A) Red Dwarfs B) White Dwarfs C) Red Giants D) Blue Supergiants 39. Which star’s surface temperature is closest to the temperature at the boundary between Earth’s mantle and core? A) Sirius B) Rigel C) the Sun D) Betelgeuse 40. According to the graph, the Sun is classified as ...
16. Magnitude Systems
... • In each passband (integrated over wavelength), we measure the “flux” (the total amount of energy per unit area arriving at the telescope’s detector per second) • To create a standard system of how relatively bright sources appear to be, astronomers created a system of magnitudes. For magnitude (m) ...
... • In each passband (integrated over wavelength), we measure the “flux” (the total amount of energy per unit area arriving at the telescope’s detector per second) • To create a standard system of how relatively bright sources appear to be, astronomers created a system of magnitudes. For magnitude (m) ...
Stellar Physics
... have done the ‘opposite’ to emphasise the point. Historic The Greek astronomer Hipparchus is usually credited with creating the first ever catalogue of stars, containing over 1000 stars and compiled possibly around 135 BC. He also ranked stars according to their brightness into a six point scale. He ...
... have done the ‘opposite’ to emphasise the point. Historic The Greek astronomer Hipparchus is usually credited with creating the first ever catalogue of stars, containing over 1000 stars and compiled possibly around 135 BC. He also ranked stars according to their brightness into a six point scale. He ...
PRESS 2001 Project Report - Hong Kong University of Science and
... Half or more of all stars in the universe are in orbit around another star or stars. In most of these multiple-star systems, there is a type of system which consists of two stars only, known as a binary star system, whose components may be separated by a large fraction of a light year, or they may b ...
... Half or more of all stars in the universe are in orbit around another star or stars. In most of these multiple-star systems, there is a type of system which consists of two stars only, known as a binary star system, whose components may be separated by a large fraction of a light year, or they may b ...
Pulsating variable stars and the Hertzsprung
... continuous spectrum. Later, Joseph von Fraunhofer (1787-1826) observed the Solar spectra more detailed and found that the dark gaps are different in strength. German physicist Gustav Kirchhoff (1824-1887) published his fundamental work in 1859, which explained the nature of the Fraunhofer lines in t ...
... continuous spectrum. Later, Joseph von Fraunhofer (1787-1826) observed the Solar spectra more detailed and found that the dark gaps are different in strength. German physicist Gustav Kirchhoff (1824-1887) published his fundamental work in 1859, which explained the nature of the Fraunhofer lines in t ...
VISIBLE STARS AS APPARENT OBSERVATIONAL EVIDENCE IN
... in the course of refuting opponents of Copernicus: These opponents of Copernicus make certain calculations based on the premise that, although the earth's motion in its annual orbit produces some curious and extremely large changes in the case of the planets, it does not cause any similar effects in ...
... in the course of refuting opponents of Copernicus: These opponents of Copernicus make certain calculations based on the premise that, although the earth's motion in its annual orbit produces some curious and extremely large changes in the case of the planets, it does not cause any similar effects in ...
The Star Finder Book - Starpath School of Navigation
... about the role of the Star Finder remains valid. The main computerized challenge to the device comes from our own StarPilot software programs for PCs and for calculators, but they too are vulnerable to the elements underway as all electronics are. The most significant development since 1995 related ...
... about the role of the Star Finder remains valid. The main computerized challenge to the device comes from our own StarPilot software programs for PCs and for calculators, but they too are vulnerable to the elements underway as all electronics are. The most significant development since 1995 related ...
HR Diagram
... Uncheck show luminosity classes and check show instability strip. Note that this region of the HR Diagram indicates where pulsating stars are found such as RR Lyrae stars and Cepheid variable stars. These stars vary in brightness because they are pulsating – alternately growing bigger and smaller – ...
... Uncheck show luminosity classes and check show instability strip. Note that this region of the HR Diagram indicates where pulsating stars are found such as RR Lyrae stars and Cepheid variable stars. These stars vary in brightness because they are pulsating – alternately growing bigger and smaller – ...
Auriga (constellation)
Auriga is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one of the 88 modern constellations. Located north of the celestial equator, its name is the Latin word for ""charioteer"", associating it with various mythological charioteers, including Erichthonius and Myrtilus. Auriga is most prominent during winter evenings in the Northern Hemisphere, along with the five other constellations that have stars in the Winter Hexagon asterism. Because of its northern declination, Auriga is only visible in its entirety as far as 34° south; for observers farther south it lies partially or fully below the horizon. A large constellation, with an area of 657 square degrees, it is half the size of the largest constellation, Hydra.Its brightest star, Capella, is an unusual multiple star system among the brightest stars in the night sky. Beta Aurigae is an interesting variable star in the constellation; Epsilon Aurigae, a nearby eclipsing binary with an unusually long period, has been studied intensively. Because of its position near the winter Milky Way, Auriga has many bright open clusters in its borders, including M36, M37, and M38, popular targets for amateur astronomers. In addition, it has one prominent nebula, the Flaming Star Nebula, associated with the variable star AE Aurigae.In Chinese mythology, Auriga's stars were incorporated into several constellations, including the celestial emperors' chariots, made up of the modern constellation's brightest stars. Auriga is home to the radiant for the Aurigids, Zeta Aurigids, Delta Aurigids, and the hypothesized Iota Aurigids.