Lecture 6: Stellar Distances and Brightness
... The light year (ly) is an alternative unit of distance “1 light year is the distance traveled by light in one year” 1 ly is equivalent to ...
... The light year (ly) is an alternative unit of distance “1 light year is the distance traveled by light in one year” 1 ly is equivalent to ...
Night Sky Checklist Year-Round Unaided Eye Astronomy
... The daily rotation of Earth can be seen over the course of a half hour to an hour by noticing how the moon, stars, and planets appear to rise or set. The annual revolution of Earth around the sun can be seen by observing the sky once a week at the same time of night, and noticing the apparent shift ...
... The daily rotation of Earth can be seen over the course of a half hour to an hour by noticing how the moon, stars, and planets appear to rise or set. The annual revolution of Earth around the sun can be seen by observing the sky once a week at the same time of night, and noticing the apparent shift ...
III. Contents of The Universe
... B. Stars – balls of hot gas that emit light The Sun is the closest star to us 1. Multiple Star System most stars that we see in the sky are parts of multiple star systems revolve around each other. two stars = binary star system. ex. Algol, eclipsing binary ...
... B. Stars – balls of hot gas that emit light The Sun is the closest star to us 1. Multiple Star System most stars that we see in the sky are parts of multiple star systems revolve around each other. two stars = binary star system. ex. Algol, eclipsing binary ...
What Can We See in the Night Sky?
... Star Clusters • Groups of stars that are close together and travel together are known as star clusters • Star clusters are part of galaxies • Open clusters – contain about 50 to 1000 stars – dispersed along the Milky Way’s main band ...
... Star Clusters • Groups of stars that are close together and travel together are known as star clusters • Star clusters are part of galaxies • Open clusters – contain about 50 to 1000 stars – dispersed along the Milky Way’s main band ...
HR Diagram Lab Handout
... 7. The temperature of the hottest stars is _______________. 8. The color of the hottest stars is ________________. 9. The temperature of the coldest stars is _______________. 10. The color of the coldest stars is ________________. 11. The life expectancy of a very hot star is _______________ years. ...
... 7. The temperature of the hottest stars is _______________. 8. The color of the hottest stars is ________________. 9. The temperature of the coldest stars is _______________. 10. The color of the coldest stars is ________________. 11. The life expectancy of a very hot star is _______________ years. ...
dtu7ech11 - Fort Thomas Independent Schools
... Are brighter stars hotter than dimmer stars? Not necessarily. Many brighter stars, such as red giants, are cooler but larger than hotter, dimmer stars, such as ...
... Are brighter stars hotter than dimmer stars? Not necessarily. Many brighter stars, such as red giants, are cooler but larger than hotter, dimmer stars, such as ...
TAP 702- 6: Binary stars - Teaching Advanced Physics
... When the stars are at C and the point diametrically opposite to C respectively, then both will have their 589.0 nm spectral line red shifted by 0.13 nm, as both will have the same velocity relative to the Earth (question 4). When they move towards A and B, however, their velocities relative to Earth ...
... When the stars are at C and the point diametrically opposite to C respectively, then both will have their 589.0 nm spectral line red shifted by 0.13 nm, as both will have the same velocity relative to the Earth (question 4). When they move towards A and B, however, their velocities relative to Earth ...
The Night Sky 12-07
... evening twilight. During the first few days of April, before it disappears from view, Mercury can be glimpsed along the horizon well below Mars. Jupiter reaches opposition this month, which means that it will be up all night long and high in the south at local midnight. For us in the U.P. on Eastern ...
... evening twilight. During the first few days of April, before it disappears from view, Mercury can be glimpsed along the horizon well below Mars. Jupiter reaches opposition this month, which means that it will be up all night long and high in the south at local midnight. For us in the U.P. on Eastern ...
Topic E: Astrophysics E1 Introduction to the Universe.
... http://scaleofuniverse.com - look at the relative size of objects - Navigate to the "Observable Universe" tab at the top. Zoom in to the Earth on the far left and work your way to the right. Notice that the Milky Way is that band of white that you see in the night sky. When you get to the "Local Gal ...
... http://scaleofuniverse.com - look at the relative size of objects - Navigate to the "Observable Universe" tab at the top. Zoom in to the Earth on the far left and work your way to the right. Notice that the Milky Way is that band of white that you see in the night sky. When you get to the "Local Gal ...
Science Assessment Stage H--Performance Standard 12F-H
... star on their card. Ask students to propose additional arrangements for the stars they represent (other than by constellation). Color is among the most obvious of the properties, so when it is suggested, ask the students to group themselves accordingly. Constellation groups will now disperse, demons ...
... star on their card. Ask students to propose additional arrangements for the stars they represent (other than by constellation). Color is among the most obvious of the properties, so when it is suggested, ask the students to group themselves accordingly. Constellation groups will now disperse, demons ...
Life Cycle of a Star
... - Stars are classified by their size, brightness, color, temperature, spectrum and age. ...
... - Stars are classified by their size, brightness, color, temperature, spectrum and age. ...
STARS Chapter 8 Section 1
... with parallax**** • Parallax is the object’s apparent shift in motion when viewed from different locations. It is an optical effect. • Astronomers can measure parallax and use it to calculate exact distances to stars. • Does the man on the right(V2) see the moon as closer or farther away than the ma ...
... with parallax**** • Parallax is the object’s apparent shift in motion when viewed from different locations. It is an optical effect. • Astronomers can measure parallax and use it to calculate exact distances to stars. • Does the man on the right(V2) see the moon as closer or farther away than the ma ...
ASTR 1101-001 Spring 2008 - Louisiana State University
... • Astronomers continue to use this “magnitude” system, extending it to much fainter objects (that are visible through telescopes but were not bright enough to be seen by Greek astronomers). • The Sun can also be put on this “magnitude” system. ...
... • Astronomers continue to use this “magnitude” system, extending it to much fainter objects (that are visible through telescopes but were not bright enough to be seen by Greek astronomers). • The Sun can also be put on this “magnitude” system. ...
Chapter 40
... In sixth place is the C one Nebula. The part pictured here is 2.5 light years in length (the equivalent of 23 million return trips to the ...
... In sixth place is the C one Nebula. The part pictured here is 2.5 light years in length (the equivalent of 23 million return trips to the ...
Introduction Notes - Sunflower Astronomy
... unit is the distance from the Earth to the Sun, 1.48x108 km) or 4.3 light years. This distance is typical of distances between stars in our galaxy. Stars are formed from interstellar clouds of dust and gas and evolve at rates that depend on their mass (massive stars evolve fast, less massive stars e ...
... unit is the distance from the Earth to the Sun, 1.48x108 km) or 4.3 light years. This distance is typical of distances between stars in our galaxy. Stars are formed from interstellar clouds of dust and gas and evolve at rates that depend on their mass (massive stars evolve fast, less massive stars e ...
PDF version (two pages, including the full text)
... Southern Cross and the Pointers (Alpha and Beta Centauri). Alpha Centauri is a triple system, with two sun like stars orbiting each other every 80 years and a dim red dwarf tagging along at a much larger distance. This star was discovered by Robert Innes at the Union Observatory in Johannesburg in 1 ...
... Southern Cross and the Pointers (Alpha and Beta Centauri). Alpha Centauri is a triple system, with two sun like stars orbiting each other every 80 years and a dim red dwarf tagging along at a much larger distance. This star was discovered by Robert Innes at the Union Observatory in Johannesburg in 1 ...
Document
... measurement of the position and motion of celestial bodies • It is one of the oldest subfields of the astronomy dating back at least to Hipparchus (130 B.C.), who combined the arithmetical astronomy of the Babylonians with the geometrical approach of the Greeks to develop a model for solar and lunar ...
... measurement of the position and motion of celestial bodies • It is one of the oldest subfields of the astronomy dating back at least to Hipparchus (130 B.C.), who combined the arithmetical astronomy of the Babylonians with the geometrical approach of the Greeks to develop a model for solar and lunar ...
PDF version (two pages, including the full text)
... seen by the eye as a single bright star is easily separated by a small telescope into a brilliant pair of yellow stars, Alpha Centauri A and B. The brighter one is about half again as bright as our sun, the fainter about half as bright as the sun. Separated by about 23 times the distance from the Ea ...
... seen by the eye as a single bright star is easily separated by a small telescope into a brilliant pair of yellow stars, Alpha Centauri A and B. The brighter one is about half again as bright as our sun, the fainter about half as bright as the sun. Separated by about 23 times the distance from the Ea ...
Chapter 1 Vocabulary – The Puzzled of Matter
... Solar Flare – a dramatic eruption on the sun’s surface, usually near sunspots, that produces X-rays and sends charged particles into space at speeds of 1000 km/s or more Star – a large, glowing ball of gas in space that generates energy through nuclear fusion in its core Light-year – the distance ...
... Solar Flare – a dramatic eruption on the sun’s surface, usually near sunspots, that produces X-rays and sends charged particles into space at speeds of 1000 km/s or more Star – a large, glowing ball of gas in space that generates energy through nuclear fusion in its core Light-year – the distance ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.