March 2016 BRAS Addendum Newsletter
... Sirius (Alpha CMa), “scorching”, “the Dog Star”, mag. -1.46, 06 45 09.25 -16 42 47.3, is a blue-white binary star, and is also the brightest star in the night sky. The companion star, Sirius B (the Pup),is a white dwarf star with a magnitude of 8.4, and has an orbital period of 50 years and a separa ...
... Sirius (Alpha CMa), “scorching”, “the Dog Star”, mag. -1.46, 06 45 09.25 -16 42 47.3, is a blue-white binary star, and is also the brightest star in the night sky. The companion star, Sirius B (the Pup),is a white dwarf star with a magnitude of 8.4, and has an orbital period of 50 years and a separa ...
AST1100 Lecture Notes
... where d is the physical length of an object, r is the distance to the object and θ is the apparent angular extension (length) of the object. We can often measure the angular extension of an observed object. All that we need in order to find the distance is the physical length d. There are some objec ...
... where d is the physical length of an object, r is the distance to the object and θ is the apparent angular extension (length) of the object. We can often measure the angular extension of an observed object. All that we need in order to find the distance is the physical length d. There are some objec ...
Star Formation in Bok Globules - European Southern Observatory
... CG 1 is not the only one of the globules in the Gum Nebula wh ich has formed stars, several of them are associated with stars and Herbig-Haro objects. Herbig-Haro objects are small nebulosities with peculiar forbidden emission-li ne spectra found in certain star-forming dark clouds. Often these obje ...
... CG 1 is not the only one of the globules in the Gum Nebula wh ich has formed stars, several of them are associated with stars and Herbig-Haro objects. Herbig-Haro objects are small nebulosities with peculiar forbidden emission-li ne spectra found in certain star-forming dark clouds. Often these obje ...
classifying stars
... The brightness of a star depends on its size, temperature and distance from the earth. Some stars appear brighter to us on earth because they are much closer than others, astronomers call this apparent magnitude (HOW BRIGHT A STAR APPEARS.) However, if astronomers could take two stars and place them ...
... The brightness of a star depends on its size, temperature and distance from the earth. Some stars appear brighter to us on earth because they are much closer than others, astronomers call this apparent magnitude (HOW BRIGHT A STAR APPEARS.) However, if astronomers could take two stars and place them ...
Stargazing For Beginners: A Binocular Tour of the Southern Night Sky
... equivalent of US$100-$200, and it’s often possible to find a used pair for much less. Binoculars are ideal for beginning stargazers because they are intuitive to use and show a wide area of sky at one time. And they bring into view hundreds of deep-sky objects and thousands of stars that cannot be s ...
... equivalent of US$100-$200, and it’s often possible to find a used pair for much less. Binoculars are ideal for beginning stargazers because they are intuitive to use and show a wide area of sky at one time. And they bring into view hundreds of deep-sky objects and thousands of stars that cannot be s ...
KINEMATIC DISCOVERY OF A STELLAR STREAM LOCATED IN
... DR8 spectra within the on- and off-stream fields, respectively. We also show subsets of the spectra with properties expected for the PSS. The subscripts on the magnitudes g0 and (g − r)0 mean that these magnitudes have been extinction-corrected based on the Schlegel et al. (1998) maps (using the ext ...
... DR8 spectra within the on- and off-stream fields, respectively. We also show subsets of the spectra with properties expected for the PSS. The subscripts on the magnitudes g0 and (g − r)0 mean that these magnitudes have been extinction-corrected based on the Schlegel et al. (1998) maps (using the ext ...
Late Summer Messier Objects
... companion Herschel 36 to the WSW, are the primary illuminators of M8, just as star C in the Trapezium is the primary illuminator of M42. Like the Trapezium stars, 9 Sgr and Herschel 36 are O-type stars emitting the great majority of their energy in the ultraviolet spectrum, and causing the hydrogen ...
... companion Herschel 36 to the WSW, are the primary illuminators of M8, just as star C in the Trapezium is the primary illuminator of M42. Like the Trapezium stars, 9 Sgr and Herschel 36 are O-type stars emitting the great majority of their energy in the ultraviolet spectrum, and causing the hydrogen ...
Starfarer
... steer towards whichever star rises or sets in the direction of the island destination. The bearing of the destination is the azimuth or bearing of its guiding star, at rise if the course is an easterly one and at set if it is westerly. Although stars rise 4 minutes earlier each night, so that after ...
... steer towards whichever star rises or sets in the direction of the island destination. The bearing of the destination is the azimuth or bearing of its guiding star, at rise if the course is an easterly one and at set if it is westerly. Although stars rise 4 minutes earlier each night, so that after ...
Orion the Hunter
... upon NGC 2194, a fine open cluster containing several dozen stars. An assortment of stars between magnitudes 10 and 13 are spread over an area 6' across. Look for a concentration of 11th-magnitude stars at the cluster’s heart. Approximately 10,000 light-years separate us from NGC 2194. At a dark sit ...
... upon NGC 2194, a fine open cluster containing several dozen stars. An assortment of stars between magnitudes 10 and 13 are spread over an area 6' across. Look for a concentration of 11th-magnitude stars at the cluster’s heart. Approximately 10,000 light-years separate us from NGC 2194. At a dark sit ...
Celestial Globes Armillary Spheres
... 3- Hipparchus: Compiled from his observations the precise rising and setting times of stars, but only from his position in Rhodes. He also discovered the precession of the equinoxes. 4 - Geminus of Rhodes: Realised that the ‘Artic’ and ‘Antarctic’ circles were dependant on the observers position on ...
... 3- Hipparchus: Compiled from his observations the precise rising and setting times of stars, but only from his position in Rhodes. He also discovered the precession of the equinoxes. 4 - Geminus of Rhodes: Realised that the ‘Artic’ and ‘Antarctic’ circles were dependant on the observers position on ...
AST1100 Lecture Notes
... The magnitude M which is based on flux integrated over all wavelengths is called the bolometric magnitude. The visual magnitude MV on the other hand, is based on the flux over a wavelength region defined by a filter function SV (λ). The filter function is a function which is centered at λ = 550nm wi ...
... The magnitude M which is based on flux integrated over all wavelengths is called the bolometric magnitude. The visual magnitude MV on the other hand, is based on the flux over a wavelength region defined by a filter function SV (λ). The filter function is a function which is centered at λ = 550nm wi ...
AST1100 Lecture Notes
... The magnitude M which is based on flux integrated over all wavelengths is called the bolometric magnitude. The visual magnitude MV on the other hand, is based on the flux over a wavelength region defined by a filter function SV (λ). The filter function is a function which is centered at λ = 550nm wi ...
... The magnitude M which is based on flux integrated over all wavelengths is called the bolometric magnitude. The visual magnitude MV on the other hand, is based on the flux over a wavelength region defined by a filter function SV (λ). The filter function is a function which is centered at λ = 550nm wi ...
ASTRO-114--Lecture 38-
... is a factor of 100 more in brightness. The Sun comes out as -26 on that scale. But think about that. I’m able to describe the brightness of every object in the sky from the Sun down to the faintest stars in the sky, and I never have to use a number larger than two digits. Minus 26 for the Sun. The f ...
... is a factor of 100 more in brightness. The Sun comes out as -26 on that scale. But think about that. I’m able to describe the brightness of every object in the sky from the Sun down to the faintest stars in the sky, and I never have to use a number larger than two digits. Minus 26 for the Sun. The f ...
Teacher`s Guide - Cornell Science Inquiry Partnerships
... How Are Stars Like People? Teacher’s Guide by David Rothstein, CSIP Graduate Student Fellow, Cornell University ...
... How Are Stars Like People? Teacher’s Guide by David Rothstein, CSIP Graduate Student Fellow, Cornell University ...
Gemini - www.BahaiStudies.net
... degrees, the same size as the full Moon. Its high magnitude means that M35 is visible to the unaided eye under dark skies; under brighter skies it is discernible in binoculars. The 200 stars of M35 are arranged in chains that curve throughout the cluster; it is 2800 light-years from Earth. Another o ...
... degrees, the same size as the full Moon. Its high magnitude means that M35 is visible to the unaided eye under dark skies; under brighter skies it is discernible in binoculars. The 200 stars of M35 are arranged in chains that curve throughout the cluster; it is 2800 light-years from Earth. Another o ...
sections 12-15 instructor notes
... resulting from the tilt of the local spiral feature to the Galactic plane, with the tilt being below the plane in the direction of the anticentre and above the plane in the direction of the Galactic centre. Investigations of the distribution of dark clouds by Lynds (ApJS, 7, 1, 1962) for the norther ...
... resulting from the tilt of the local spiral feature to the Galactic plane, with the tilt being below the plane in the direction of the anticentre and above the plane in the direction of the Galactic centre. Investigations of the distribution of dark clouds by Lynds (ApJS, 7, 1, 1962) for the norther ...
A Walk through the Southern Sky: A Guide to Stars and
... What star is that? Where is the Southern Cross? Who was Orion? A Walk through the Southern Sky is a beautiful guide to pathways in the night sky which answers these questions and many more. Its unique simplified maps make it easy to find by eye the constellations and the stars within them. Clear ins ...
... What star is that? Where is the Southern Cross? Who was Orion? A Walk through the Southern Sky is a beautiful guide to pathways in the night sky which answers these questions and many more. Its unique simplified maps make it easy to find by eye the constellations and the stars within them. Clear ins ...
High Precision Parallax Collecting Satellite
... Many a night I saw the Pleiads, rising thro’ the mellow shade Glitter like a swarm of fireflies, tangled in a silver braid. ...
... Many a night I saw the Pleiads, rising thro’ the mellow shade Glitter like a swarm of fireflies, tangled in a silver braid. ...
The Significance of Mega Stars
... apparent brightness (but Bayer was not always consistent in this). In the early 1700s John Flamsteed assigned numbers to the bright stars in each constellation, in order of right ascension. The Flamsteed numbers proved useful, because one eventually runs out of Greek letters, but there is no limit t ...
... apparent brightness (but Bayer was not always consistent in this). In the early 1700s John Flamsteed assigned numbers to the bright stars in each constellation, in order of right ascension. The Flamsteed numbers proved useful, because one eventually runs out of Greek letters, but there is no limit t ...
J: Chapter 4: Stars and Galaxies
... almost directly at the North Star, Polaris, which is located at the end of the Little Dipper in the constellation Ursa Minor. Polaris is positioned almost directly over Earth’s north pole. ...
... almost directly at the North Star, Polaris, which is located at the end of the Little Dipper in the constellation Ursa Minor. Polaris is positioned almost directly over Earth’s north pole. ...
Observing Orion
... The Great Hunter. Orion boasted that no animal could defeat him and he boasted that so great was his might and skill as a hunter that he could kill all the animals on the face of the Earth. Gaea, Goddess of Earth, was alarmed at such an unecological and inappropriate statement. She decided that Orio ...
... The Great Hunter. Orion boasted that no animal could defeat him and he boasted that so great was his might and skill as a hunter that he could kill all the animals on the face of the Earth. Gaea, Goddess of Earth, was alarmed at such an unecological and inappropriate statement. She decided that Orio ...
A Stars
... Diagram fainter than Main Sequence stars of the same Temperature. – Means they must be smaller in radius. – L-R-T Relation predicts: R ~ 0.01 Rsun (~ size of Earth!) ...
... Diagram fainter than Main Sequence stars of the same Temperature. – Means they must be smaller in radius. – L-R-T Relation predicts: R ~ 0.01 Rsun (~ size of Earth!) ...
here - Diana`s Fixed Stars
... stars, far from the ecliptic, pack quite a wallop! A good example is 4 th - to-5 th magnitude Al Kurah, Xi Cephei (also called Kurdah) in the chest of Cepheus, the King (24 Aries tropical, 0 Aries Lahiri), which is 66 degrees north of the ecliptic. (The Pole is 90 degrees north.) This little, dim, e ...
... stars, far from the ecliptic, pack quite a wallop! A good example is 4 th - to-5 th magnitude Al Kurah, Xi Cephei (also called Kurdah) in the chest of Cepheus, the King (24 Aries tropical, 0 Aries Lahiri), which is 66 degrees north of the ecliptic. (The Pole is 90 degrees north.) This little, dim, e ...
1. The catalogue structure
... the following famed researchers: Peters, Bailey, Schjellerup, Pierce and Manitius. Different identifications of certain Almagest stars on the celestial sphere of our epoch suggested by said astronomers are also indicated. We have partially processed this enormous body of material. First of all, it i ...
... the following famed researchers: Peters, Bailey, Schjellerup, Pierce and Manitius. Different identifications of certain Almagest stars on the celestial sphere of our epoch suggested by said astronomers are also indicated. We have partially processed this enormous body of material. First of all, it i ...
12 Introduction to Cepheid Variable Stars Exercise
... were ordered by increasing period that the variable stars were also ordered by increasing brightness. Because both the Small Magellanic Cloud and the Large Magellanic Cloud are each a single galaxy nearby then the cepheid variables within each cloud are relatively the same distance from earth. It se ...
... were ordered by increasing period that the variable stars were also ordered by increasing brightness. Because both the Small Magellanic Cloud and the Large Magellanic Cloud are each a single galaxy nearby then the cepheid variables within each cloud are relatively the same distance from earth. It se ...
Crux
Crux /ˈkrʌks/, located in the deep southern sky, is the smallest yet one of the most distinctive of the 88 modern constellations. Its name is Latin for cross, and it is dominated by a cross-shaped asterism that is commonly known as the Southern Cross. Although visible to the Ancient Greeks, it was seen as part of the constellation Centaurus, and not defined or accurately mapped till the 16th century.Known as Acrux, blue-white Alpha Crucis is the constellation's brightest star and the bottom star of the cross. Nearly as bright are Beta and Gamma, while Delta and Epsilon make up the asterism. Many of the constellation's brighter stars are members of the Scorpius–Centaurus Association, a loose group of hot blue-white stars that appear to share a common origin and motion across the Milky Way. Two star systems have been found to have planets. The constellation also contains four Cepheid variables visible to the naked eye under optimum conditions. Crux also contains the Jewel Box, a bright open cluster, and the Coalsack Nebula, the most prominent dark nebula in the sky.