Pulsed Accretion in the Young Binary &
... After that time, the sun rode quietly in the back of his mother's chariot. He served the people 365 days a year and never again made mischief in the sky. When the people saw that the sun was sincere about his duties, they at last put away their hatred. ...
... After that time, the sun rode quietly in the back of his mother's chariot. He served the people 365 days a year and never again made mischief in the sky. When the people saw that the sun was sincere about his duties, they at last put away their hatred. ...
Science Case for the Chinese Participation of TMT
... terms of hardware) is also reaching the western standard. Chinese astronomers are engaged in diverse research areas with a potential pool of excellent students and invaluable resources of oversea Chinese astronomers both in observational and theoretical astrophysics. However, a world class, general- ...
... terms of hardware) is also reaching the western standard. Chinese astronomers are engaged in diverse research areas with a potential pool of excellent students and invaluable resources of oversea Chinese astronomers both in observational and theoretical astrophysics. However, a world class, general- ...
365 days of SKYWATCHING
... night as the terminator - the line between sunset and shadow - progresses over the surface, revealing new details. Unlike a star chart, Moon feature instructions are based on lunar topography and not our Earthly cardinal directions. While these pages outline what features should be visible on any gi ...
... night as the terminator - the line between sunset and shadow - progresses over the surface, revealing new details. Unlike a star chart, Moon feature instructions are based on lunar topography and not our Earthly cardinal directions. While these pages outline what features should be visible on any gi ...
A Search for Extrasolar Planets Using Echoes Produced in Flare
... noticeable amount of energy that disturbs the steady state of the star on the whole or a part of it.’” The first noted occurrence of a flare from a star other than the Sun was in 1924 by Hertzsprung. At the time of the observation, Ejnar Hertzsprung attributed the brightening of the star to an in fa ...
... noticeable amount of energy that disturbs the steady state of the star on the whole or a part of it.’” The first noted occurrence of a flare from a star other than the Sun was in 1924 by Hertzsprung. At the time of the observation, Ejnar Hertzsprung attributed the brightening of the star to an in fa ...
arXiv:astro-ph/9701131v1 18 Jan 1997
... The long term future of the universe and its contents is a topic of profound scientific and philosophical importance. With our current understanding of physics and astrophysics, many of the questions regarding the ultimate fate of the universe can now be quantitatively addressed. Our goal is to summ ...
... The long term future of the universe and its contents is a topic of profound scientific and philosophical importance. With our current understanding of physics and astrophysics, many of the questions regarding the ultimate fate of the universe can now be quantitatively addressed. Our goal is to summ ...
A Budget and Accounting of Metals at z~ 0: Results from the COS
... of oxygen in their ISM. COS-Halos has specifically addressed the metal content of diffuse halo gas. The current study aims to place these findings on highly ionized oxygen into the larger context of metal masses contained within all galactic and circumgalactic components: stars, dust, and the other ...
... of oxygen in their ISM. COS-Halos has specifically addressed the metal content of diffuse halo gas. The current study aims to place these findings on highly ionized oxygen into the larger context of metal masses contained within all galactic and circumgalactic components: stars, dust, and the other ...
Luminosity, Flux and Magnitudes Outline
... Devised a the magnitude system 2100 years ago to classify stars according to their apparent brightness. He labeled 1080 stars as class 0, 1,.. 6. 0 was the brightest, 1 the next brightest, etc. ...
... Devised a the magnitude system 2100 years ago to classify stars according to their apparent brightness. He labeled 1080 stars as class 0, 1,.. 6. 0 was the brightest, 1 the next brightest, etc. ...
here
... 17th, and is at greatest heliocentric latitude south on May 26th. The speediest planet will be low in the eastern sky prior to sunrise for northern hemisphere observers and will be more easily visible at the end of the month, when it brightens to magnitude -0.3. During May, Venus shines prominently ...
... 17th, and is at greatest heliocentric latitude south on May 26th. The speediest planet will be low in the eastern sky prior to sunrise for northern hemisphere observers and will be more easily visible at the end of the month, when it brightens to magnitude -0.3. During May, Venus shines prominently ...
Where stars form: inside-out growth and coherent star formation from
... Our redshift fitting method also utilizes the photometry. This is probably not strictly necessary for the sample of Hα line emitting galaxies used for this study, although it helps to confirm the redshift of galaxies with only one emission line detected. It is crucial, however, for galaxies without ...
... Our redshift fitting method also utilizes the photometry. This is probably not strictly necessary for the sample of Hα line emitting galaxies used for this study, although it helps to confirm the redshift of galaxies with only one emission line detected. It is crucial, however, for galaxies without ...
An Expanded View of the Universe
... Exoplanets: are we alone? For over a decade, we have known that exoplanets exist, but we have not yet been able to detect the faint signatures of Earth-like planets directly. The E-ELT will have the resolution to obtain the first direct images of such objects, and even to analyse their atmospheres f ...
... Exoplanets: are we alone? For over a decade, we have known that exoplanets exist, but we have not yet been able to detect the faint signatures of Earth-like planets directly. The E-ELT will have the resolution to obtain the first direct images of such objects, and even to analyse their atmospheres f ...
Chapter J2
... Passage 1 Quasars are some of the most puzzling objects in the sky. If viewed through an optical telescope, a quasar appears as a small, dim star. Quasars are the most distant objects that have been observed from Earth. But many quasars are hundreds of times brighter than the brightest galaxy. Becau ...
... Passage 1 Quasars are some of the most puzzling objects in the sky. If viewed through an optical telescope, a quasar appears as a small, dim star. Quasars are the most distant objects that have been observed from Earth. But many quasars are hundreds of times brighter than the brightest galaxy. Becau ...
Sample syllabus 2 - Johns Hopkins Center for Talented Youth
... Course Description: When the sun runs out of fuel, will it explode in a giant supernova or fade out into a white dwarf? Does every galaxy revolve around a super-massive black hole? Will the universe continue to expand, or will it eventually collapse back upon itself in a reversal of the Big Bang? As ...
... Course Description: When the sun runs out of fuel, will it explode in a giant supernova or fade out into a white dwarf? Does every galaxy revolve around a super-massive black hole? Will the universe continue to expand, or will it eventually collapse back upon itself in a reversal of the Big Bang? As ...
2 Statistical properties of a sample of periodically variable B-type supergiants
... the number of lines used. For the 12 comparison objects, not all selected orders were measured, and hence only a few lines could be used. For five stars appropriate metallic lines were lacking. Three out of five (HD 64760, HD 157246, and HD 165024) have blended metal lines due to their fast rotation ...
... the number of lines used. For the 12 comparison objects, not all selected orders were measured, and hence only a few lines could be used. For five stars appropriate metallic lines were lacking. Three out of five (HD 64760, HD 157246, and HD 165024) have blended metal lines due to their fast rotation ...
Document
... Gaia’s mission is to create the most accurate map of the Galaxy to date. To do this, Gaia is observing about one billion stars, roughly one per cent of the total stellar content of the Milky Way. Eventually, this detailed inventory will include the positions and motions of stars to unprecedented pre ...
... Gaia’s mission is to create the most accurate map of the Galaxy to date. To do this, Gaia is observing about one billion stars, roughly one per cent of the total stellar content of the Milky Way. Eventually, this detailed inventory will include the positions and motions of stars to unprecedented pre ...
A New Science Strategy for Space Astronomy and Astrophysics
... About this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from the original typesetting files. Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific ...
... About this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from the original typesetting files. Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific ...
Observational evidence for AGN feedback in early
... have time and again refused to fit into the bigger picture and thus, they have been the most difficult and illuminating test for galaxy E-mail: [email protected] ...
... have time and again refused to fit into the bigger picture and thus, they have been the most difficult and illuminating test for galaxy E-mail: [email protected] ...
Galaxies - hwchemistry
... – Studies of nearby globular clusters with known distances show that they are about 25 pc in diameter. – If astronomers can detect globular clusters in a distant galaxy, they can assume the clusters are about 25 pc in diameter and use the small-angle formula to find the distance to the galaxy. ...
... – Studies of nearby globular clusters with known distances show that they are about 25 pc in diameter. – If astronomers can detect globular clusters in a distant galaxy, they can assume the clusters are about 25 pc in diameter and use the small-angle formula to find the distance to the galaxy. ...
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.