RS Oph
... Variable Star of the Year RS Ophiuchi RS Oph is the second brightest member of a rare class of cataclysmic variable star known as recurrent novae (Nr). These stars are novae where more than one outburst has been observed and appear to be intermediate in class between the classical novae (single majo ...
... Variable Star of the Year RS Ophiuchi RS Oph is the second brightest member of a rare class of cataclysmic variable star known as recurrent novae (Nr). These stars are novae where more than one outburst has been observed and appear to be intermediate in class between the classical novae (single majo ...
Digging Deeper - subfreshmanhomework2016-2017
... There are 88 groupings of stars in the sky. Astronomers call a grouping of stars a constellation. Each constellation has a Latin name. The name is given a three-letter abbreviation. For example, Cassiopeia is abbreviated as Cas. Draco is abbreviated as Dra. Constellations are important reference poi ...
... There are 88 groupings of stars in the sky. Astronomers call a grouping of stars a constellation. Each constellation has a Latin name. The name is given a three-letter abbreviation. For example, Cassiopeia is abbreviated as Cas. Draco is abbreviated as Dra. Constellations are important reference poi ...
Constellation Packet - Mr. Jenkins` Classroom
... It is believed that this constellation was first perceived by the egyptians. They associated its rising with the swelling of the nile, and named the constellation Sirius which represented a big dog. They observed that when Sirius became visible in the east just before the dawn, the overflowing of th ...
... It is believed that this constellation was first perceived by the egyptians. They associated its rising with the swelling of the nile, and named the constellation Sirius which represented a big dog. They observed that when Sirius became visible in the east just before the dawn, the overflowing of th ...
HR Diagram Explorer Worksheet
... 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 – ...
Astronomical Distance Determination • etc.
... determination is that there is a clear relation between the period of the brightness variation and the average luminosity of the star. Cepheid variables are also very bright and can be seen from far away. (They are not main sequence stars). A complication though is that there are two populations of ...
... determination is that there is a clear relation between the period of the brightness variation and the average luminosity of the star. Cepheid variables are also very bright and can be seen from far away. (They are not main sequence stars). A complication though is that there are two populations of ...
The Science of Astronomy - Ohio Wesleyan University
... located on the Earth’s equator – The coordinates consist of latitude (angle between equator and geographical location) and longitude (angle, east or west, around the equator to point nearest to location) – The equator is an example of a great circle: a circle that divides a sphere into 2 equal parts ...
... located on the Earth’s equator – The coordinates consist of latitude (angle between equator and geographical location) and longitude (angle, east or west, around the equator to point nearest to location) – The equator is an example of a great circle: a circle that divides a sphere into 2 equal parts ...
Name: Astronomy Lab: The Hertzsprung-Russell (H
... Sometimes the student of astronomy starts to become overwhelmed trying to understand the many measurements and observations astronomers make. Data concerning distance, brightness, color, spectral class, mass, temperature, motion, etc. all seem to be gathered in an attempt to impress the student with ...
... Sometimes the student of astronomy starts to become overwhelmed trying to understand the many measurements and observations astronomers make. Data concerning distance, brightness, color, spectral class, mass, temperature, motion, etc. all seem to be gathered in an attempt to impress the student with ...
Solutions
... 2. Type Ia and Type II Supernovae are each explosions that signify the death of a star and which are briefly as luminous as an entire galaxy. However, they are very different sorts of objects. What is the original source of the energy which powers each type of explosion? (I.e. where did the energy ...
... 2. Type Ia and Type II Supernovae are each explosions that signify the death of a star and which are briefly as luminous as an entire galaxy. However, they are very different sorts of objects. What is the original source of the energy which powers each type of explosion? (I.e. where did the energy ...
20 – N10/4/PHYSI/SP3/ENG/TZ0/XX Option E
... (iii) calculate the radius of Capella in terms of that of the Sun. ...
... (iii) calculate the radius of Capella in terms of that of the Sun. ...
Lesson 4. Wiens and Stefans Laws
... 1. The peak intensity of thermal radiation from the Sun is at a wavelength of 500 nm, calculate the surface temperature of the Sun. 2. A star has a power output of 6.0 x 1028 W and a surface temperature of 3400K, calculate its radius and the ratio to the Sun’s radius (rsun = 7 x 108 m) ...
... 1. The peak intensity of thermal radiation from the Sun is at a wavelength of 500 nm, calculate the surface temperature of the Sun. 2. A star has a power output of 6.0 x 1028 W and a surface temperature of 3400K, calculate its radius and the ratio to the Sun’s radius (rsun = 7 x 108 m) ...
32Brightness
... source, where discrete colors are absorbed by atoms – From emission and absorption lines, get composition of objects and also their temperature ...
... source, where discrete colors are absorbed by atoms – From emission and absorption lines, get composition of objects and also their temperature ...
Night Sky Course Stars and Star Clusters within the
... We find the age of the cluster by noting which stars have had the time to evolve into red giants. Such calculations, according to the model for stellar evolution are at least as old as the galaxy itself. Stars in this collection belong to a population of stars whose chemical composition consists mos ...
... We find the age of the cluster by noting which stars have had the time to evolve into red giants. Such calculations, according to the model for stellar evolution are at least as old as the galaxy itself. Stars in this collection belong to a population of stars whose chemical composition consists mos ...
ppt
... • The parsec is a unit of length used in astronomy • It stands for "parallax of one arc second". • It is based on the method of trigonometric parallax, an old standard method of determining stellar distances • The angle subtended at a star by the mean radius of the Earth's orbit around the Sun is ca ...
... • The parsec is a unit of length used in astronomy • It stands for "parallax of one arc second". • It is based on the method of trigonometric parallax, an old standard method of determining stellar distances • The angle subtended at a star by the mean radius of the Earth's orbit around the Sun is ca ...
For stars
... Earth’s Orbital Motion The Twelve constellations (some say thirteen) that the Sun moves through during the year are called the zodiac; The view of the night sky changes as Earth moves in its orbit about the Sun. As drawn here, the night side of Earth faces a different set of constellations at diffe ...
... Earth’s Orbital Motion The Twelve constellations (some say thirteen) that the Sun moves through during the year are called the zodiac; The view of the night sky changes as Earth moves in its orbit about the Sun. As drawn here, the night side of Earth faces a different set of constellations at diffe ...
Today: Magnitude Terminology Photometry Applications Reading
... zero point and uncorrected for the atmospheric conditions; physically meaningless. ...
... zero point and uncorrected for the atmospheric conditions; physically meaningless. ...
Stars, Galaxies, and the Universe Section 1
... • The apparent motion of stars is the motion visible to the unaided eye. Apparent motion is caused by the movement of Earth. • The rotation of Earth causes the apparent motion of stars to be as though the stars are moving counterclockwise around the North Star. • Earth’s revolution around the sun ca ...
... • The apparent motion of stars is the motion visible to the unaided eye. Apparent motion is caused by the movement of Earth. • The rotation of Earth causes the apparent motion of stars to be as though the stars are moving counterclockwise around the North Star. • Earth’s revolution around the sun ca ...
Magnitude Scale and Distance Measurements
... 1) The absolute magnitude of the Sun is +4.83, of Sirius A is + 1.45, and of Spica is .119. Using the apparent magnitudes given in part 1 of this review, find the distances to these stars using the distance formula. Other ways of determining cosmic distances are by ...
... 1) The absolute magnitude of the Sun is +4.83, of Sirius A is + 1.45, and of Spica is .119. Using the apparent magnitudes given in part 1 of this review, find the distances to these stars using the distance formula. Other ways of determining cosmic distances are by ...
CONSTELLATION POWER POINT PROJECT
... In the Greek legend, the Taurus is a disguise that Zeus uses to get what he wants. On this occasion, Zeus had fallen in love with Europa, the daughter of King Agenor. He transformed himself into a white bull that was so gentle, they felt no fear. As Europa and her maidens began to strongly trust the ...
... In the Greek legend, the Taurus is a disguise that Zeus uses to get what he wants. On this occasion, Zeus had fallen in love with Europa, the daughter of King Agenor. He transformed himself into a white bull that was so gentle, they felt no fear. As Europa and her maidens began to strongly trust the ...
E3 – Stellar distances
... • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a light source of known ...
... • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a light source of known ...
Stars: flux, luminosity, color, and temperature
... • The brightness of a star is a measure of its flux. • Ptolemy (150 A.D.) grouped stars into 6 `magnitude’ groups according to how bright they looked to his eye. • Herschel (1800s) first measured the brightness of stars quantitatively and matched his measurements onto Ptolemy’s magnitude groups and ...
... • The brightness of a star is a measure of its flux. • Ptolemy (150 A.D.) grouped stars into 6 `magnitude’ groups according to how bright they looked to his eye. • Herschel (1800s) first measured the brightness of stars quantitatively and matched his measurements onto Ptolemy’s magnitude groups and ...
Stars, Galaxies, and the Universe Section 1 Section 1
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
18 are exactly the same ones as for galactic star clusters of early
... stars probably belong to the field, but one may ask whether some correspond to a very much older generation of stars. This observation seems to support Herbig's (1962) proposal of a spread in ages within one cluster. It is planned to extend work on NGC 6067 and also to study a neighbouring field in ...
... stars probably belong to the field, but one may ask whether some correspond to a very much older generation of stars. This observation seems to support Herbig's (1962) proposal of a spread in ages within one cluster. It is planned to extend work on NGC 6067 and also to study a neighbouring field in ...
Solutions to the 1 st Astronomy Exam
... 10. In about 300 B.C.E. Aristotle wrote “Of these fixed poles the one is always visible, being above our heads in the northern region of the sky, and is called the Arctic Pole; the other is always hidden beneath the earth to the south and is called the Antarctic Pole.” Why did Aristotle not mention ...
... 10. In about 300 B.C.E. Aristotle wrote “Of these fixed poles the one is always visible, being above our heads in the northern region of the sky, and is called the Arctic Pole; the other is always hidden beneath the earth to the south and is called the Antarctic Pole.” Why did Aristotle not mention ...
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.