Selected observation targets at a glance per constellation
... type F, will move to the constellation Pictor around the year 6400 AD. S Doradus. Hypergiant, a prototype of the group S Doradus class of variable stars, is the brightest member of the open cluster NGC 1910: latter visible in binoculars as a bright condensation within the main bar of the LMC. Is usu ...
... type F, will move to the constellation Pictor around the year 6400 AD. S Doradus. Hypergiant, a prototype of the group S Doradus class of variable stars, is the brightest member of the open cluster NGC 1910: latter visible in binoculars as a bright condensation within the main bar of the LMC. Is usu ...
X-Ray Spectroscopy of Stars
... These topics define the main focus of the present review. We aim at summarizing our understanding of cool and hot star physics contributed by X-ray spectroscopy. Naturally, therefore, we will focus on observations and interpretations that the XMM-Newton and C HAN DRA high-resolution spectrometers ha ...
... These topics define the main focus of the present review. We aim at summarizing our understanding of cool and hot star physics contributed by X-ray spectroscopy. Naturally, therefore, we will focus on observations and interpretations that the XMM-Newton and C HAN DRA high-resolution spectrometers ha ...
A spectroscopic study of detached binary systems using precise radial velocities
... are astrometric binaries: β Ret and ν Oct. The other SB1 systems were 94 Aqr A, θ Ant, and the 10-day system, HD 159656. The preliminary spectroscopic solution for θ Ant (P ∼ 18 years), is the first one derived for this system. The improvement to the precision achieved for the elements of the other ...
... are astrometric binaries: β Ret and ν Oct. The other SB1 systems were 94 Aqr A, θ Ant, and the 10-day system, HD 159656. The preliminary spectroscopic solution for θ Ant (P ∼ 18 years), is the first one derived for this system. The improvement to the precision achieved for the elements of the other ...
Abd al-Rahman al-Sufi and his book of the fixed stars: a journey of
... sky. Al-Ṣūfī’s contribution to astronomy was not only limited to writing this book but he was also instrumental in developing the science of astronomy for a very long time. He also contributed to the building of an important observatory in the city of Shiraz as well as constructing many astronomical ...
... sky. Al-Ṣūfī’s contribution to astronomy was not only limited to writing this book but he was also instrumental in developing the science of astronomy for a very long time. He also contributed to the building of an important observatory in the city of Shiraz as well as constructing many astronomical ...
Brightest Stars : Discovering the Universe Through the Sky`s Most
... ourselves are staring back and wondering about the stars in their sky, including our own Sun. The brightest stars deserve a book of their own. Stars are the most important units of the universe at large. The very word astronomy means “ordering of the stars.” When we look up in the natural night sky, ...
... ourselves are staring back and wondering about the stars in their sky, including our own Sun. The brightest stars deserve a book of their own. Stars are the most important units of the universe at large. The very word astronomy means “ordering of the stars.” When we look up in the natural night sky, ...
Stargazing For Beginners: A Binocular Tour of the Southern Night Sky
... angular distances using nothing more than your hands and fingers held at arm’s length. While simple, this is an essential skill for finding your way around the night sky. The sky tours cover four three-month seasons starting from June through August, which marks the late Autumn and winter in the sou ...
... angular distances using nothing more than your hands and fingers held at arm’s length. While simple, this is an essential skill for finding your way around the night sky. The sky tours cover four three-month seasons starting from June through August, which marks the late Autumn and winter in the sou ...
Astronomers` Observing Guides
... adventure – exploring the universe of double and multiple stars! These are the sky’s tinted jewels and waltzing couples, and they are waiting patiently in the darkness of night to dazzle and delight you. This is actually two books in one. The first part surveys the current state of knowledge about do ...
... adventure – exploring the universe of double and multiple stars! These are the sky’s tinted jewels and waltzing couples, and they are waiting patiently in the darkness of night to dazzle and delight you. This is actually two books in one. The first part surveys the current state of knowledge about do ...
Constellation Paper - Matt Hape`s Portfolio
... Cupid rather than Aphrodite and Eros who are turned to fish. Regardless who tells the tale it is always involving the two fish that escape. It is certainly a very interesting explanation of how this constellation came to be. Although the mythology is a very important piece of the Pisces constellatio ...
... Cupid rather than Aphrodite and Eros who are turned to fish. Regardless who tells the tale it is always involving the two fish that escape. It is certainly a very interesting explanation of how this constellation came to be. Although the mythology is a very important piece of the Pisces constellatio ...
A spectroscopic investigation of the O-type star - ORBi
... Results. We confirm the binarity for four objects: HD 193443, HD 228989, HD 229234 and HD 194649. We derive for the first time the orbital solutions of three systems, and we confirm the values of the fourth, showing that these four systems all have orbital periods shorter than 10 days. Besides these ...
... Results. We confirm the binarity for four objects: HD 193443, HD 228989, HD 229234 and HD 194649. We derive for the first time the orbital solutions of three systems, and we confirm the values of the fourth, showing that these four systems all have orbital periods shorter than 10 days. Besides these ...
Chandra Characterization of X-ray Emission in the Young F
... large, source-free region on the same chip to be 0.0120 counts pixel-1 s-1 in 37.2 ksec. After subtracting the background we determine a total of 1370 source counts, and a source count rate of 0.0366 cps. Using the RASS PSPC rate of 0.034 ± 0.014 cps (ROSAT AllSky Survey, Voges et al. 1999) and assu ...
... large, source-free region on the same chip to be 0.0120 counts pixel-1 s-1 in 37.2 ksec. After subtracting the background we determine a total of 1370 source counts, and a source count rate of 0.0366 cps. Using the RASS PSPC rate of 0.034 ± 0.014 cps (ROSAT AllSky Survey, Voges et al. 1999) and assu ...
A spectroscopic investigation of the O
... Results. We confirm the binarity for four objects: HD 193443, HD 228989, HD 229234, and HD 194649. We derive for the first time the orbital solutions of three systems, and we confirm the values of the fourth, showing that these four systems all have orbital periods shorter than 10 days. Besides thes ...
... Results. We confirm the binarity for four objects: HD 193443, HD 228989, HD 229234, and HD 194649. We derive for the first time the orbital solutions of three systems, and we confirm the values of the fourth, showing that these four systems all have orbital periods shorter than 10 days. Besides thes ...
The Stars - Springer
... November 1. Similarly, it will transit on February 1 at approximately 10.00 p.m., and on March 1 at about 8.00 p.m. ...
... November 1. Similarly, it will transit on February 1 at approximately 10.00 p.m., and on March 1 at about 8.00 p.m. ...
CONSTELLATION PERSEUS The constellation
... Located 92.8 light-years from Earth, it varies in apparent magnitude from a minimum of 3.5 to a maximum of 2.3 over a period of 2.867 days. The star system is the prototype of a group of eclipsing binary stars named Algol variables. • Alpha Persei known as Mirfak (Arabic for elbow) is the brightest ...
... Located 92.8 light-years from Earth, it varies in apparent magnitude from a minimum of 3.5 to a maximum of 2.3 over a period of 2.867 days. The star system is the prototype of a group of eclipsing binary stars named Algol variables. • Alpha Persei known as Mirfak (Arabic for elbow) is the brightest ...
Colloquial Jakartan Indonesian
... Kai-n-tiku-aba, whose right side is te-au-meaŋ ‘northern solstice’ and left side is te-aumaiaki ‘southern solstice’, springs from the spine of Na Atibu (Grimble 1972:43). In his Gilbertese dictionary, Sabatier defines au as ‘used to indicate sun’s position north or south of the equator’; meaŋ is the ...
... Kai-n-tiku-aba, whose right side is te-au-meaŋ ‘northern solstice’ and left side is te-aumaiaki ‘southern solstice’, springs from the spine of Na Atibu (Grimble 1972:43). In his Gilbertese dictionary, Sabatier defines au as ‘used to indicate sun’s position north or south of the equator’; meaŋ is the ...
Gemini - www.BahaiStudies.net
... draw a line from the Pleiades star cluster located in Taurus and the brightest star in Leo, Regulus. In doing so, you are drawing an imaginary line that is relatively close to the ecliptic, a line which intersects Gemini roughly at the midpoint of the constellation, just below Castor and Pollux. ...
... draw a line from the Pleiades star cluster located in Taurus and the brightest star in Leo, Regulus. In doing so, you are drawing an imaginary line that is relatively close to the ecliptic, a line which intersects Gemini roughly at the midpoint of the constellation, just below Castor and Pollux. ...
Chapter 12
... t is hard to believe that the stars we see in the night sky as tiny glints of light are in reality huge, dazzling balls of gas and that many are vastly larger and brighter than our Sun. They look dim to us only because they are so far away—several light-years (trillions of miles) to even the nearest ...
... t is hard to believe that the stars we see in the night sky as tiny glints of light are in reality huge, dazzling balls of gas and that many are vastly larger and brighter than our Sun. They look dim to us only because they are so far away—several light-years (trillions of miles) to even the nearest ...
THE MONTHLY SKY GUIDE, SIXTH EDITION
... streak of light dash across the sky like a cosmic laser beam, lasting no more than a second or so. This is a meteor, popularly termed a shooting star. Do not misidentify shooting stars with satellites or high-flying aeroplanes, which look like moving stars but drift at a more leisurely pace. Despite ...
... streak of light dash across the sky like a cosmic laser beam, lasting no more than a second or so. This is a meteor, popularly termed a shooting star. Do not misidentify shooting stars with satellites or high-flying aeroplanes, which look like moving stars but drift at a more leisurely pace. Despite ...
WHAT MAKES A STAR SO SPECIAL Abstract
... 1. The teacher introduces the physical characteristics of stars and the spectral classification to the students (you can use the information from the Introduction section as a supplement to the lesson about Star characteristics in the textbook you are using). 2. The teacher gives every student an en ...
... 1. The teacher introduces the physical characteristics of stars and the spectral classification to the students (you can use the information from the Introduction section as a supplement to the lesson about Star characteristics in the textbook you are using). 2. The teacher gives every student an en ...
Andromeda: Daughter of Cassiopeia Ἀνδρομέδη Kaitlyn Heaton
... position in the sky. The Princess' head is the star Alpheratz, which is also the last star in Pegasus. It is located in the first quadrant of the northern hemisphere (NQ1). Its coordinates are R.A. 1h / Dec +40°. It can be seen throughout the range of latitudes extending from +90° to -40°. When one ...
... position in the sky. The Princess' head is the star Alpheratz, which is also the last star in Pegasus. It is located in the first quadrant of the northern hemisphere (NQ1). Its coordinates are R.A. 1h / Dec +40°. It can be seen throughout the range of latitudes extending from +90° to -40°. When one ...
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 ...
Astron 104 Laboratory #9 Cepheid Variable Stars
... receive on Earth (i.e., how bright do we measure the star to be). • The absolute magnitude of the star, which is a measure of how much light it is actually radiating into space (i.e, how bright it actually is). • The star’s distance from us. In principle, if we know the first two of these quantities ...
... receive on Earth (i.e., how bright do we measure the star to be). • The absolute magnitude of the star, which is a measure of how much light it is actually radiating into space (i.e, how bright it actually is). • The star’s distance from us. In principle, if we know the first two of these quantities ...
Notable long-period eclipsing binaries. Part I. - Project VS
... the chance to study the characteristics of isolated stars with a high degree of precision and accuracy. The most interesting fact about eclipsing binaries is that all kinds of stars are found as members of binaries: from normal main sequence stars, variable stars, evolved giants and supergiants, to ...
... the chance to study the characteristics of isolated stars with a high degree of precision and accuracy. The most interesting fact about eclipsing binaries is that all kinds of stars are found as members of binaries: from normal main sequence stars, variable stars, evolved giants and supergiants, to ...
1. The catalogue structure
... commonly referred to as “Aries”. The next “equinoctial month of April” is when the Sun passes through the constellation of Taurus of the even Zodiac. Next come Gemini, Cancer, Leo,Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and, finally, Pisces. This is how the annual ecliptic circle en ...
... commonly referred to as “Aries”. The next “equinoctial month of April” is when the Sun passes through the constellation of Taurus of the even Zodiac. Next come Gemini, Cancer, Leo,Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and, finally, Pisces. This is how the annual ecliptic circle en ...
Small star patterns for telescopes and binoculars Demelza Ramakers
... (that forms the golf ball) within 1/3e distance from this line (count from Almach). Circle is 4 degrees ...
... (that forms the golf ball) within 1/3e distance from this line (count from Almach). Circle is 4 degrees ...
Capella
Capella is the brightest star in the constellation Auriga, the sixth brightest in the night sky and the third brightest in the northern celestial hemisphere, after Arcturus and Vega. Its name is derived from the diminutive of the Latin capra ""goat"", hence ""little goat"". Capella also bears the Bayer designation Alpha Aurigae (often abbreviated to α Aurigae, α Aur or Alpha Aur). Although it appears to be a single star to the naked eye, it is actually a star system of four stars in two binary pairs. The first pair consists of two bright, large type-G giant stars, both with a radius around 10 times that of the Sun and two and a half times its mass, in close orbit around each other. Designated Capella Aa and Capella Ab, these two stars have both exhausted their core hydrogen fuel and become giant stars, though it is unclear exactly what stage they are on the stellar evolutionary pathway. The second pair, around 10,000 astronomical units from the first, consists of two faint, small and relatively cool red dwarfs. They are designated Capella H and Capella L. The stars labelled Capella C through to G and I through to K are actually unrelated stars in the same visual field. The Capella system is relatively close, at only 42.8 light-years (13.1 pc) from Earth.