Study Guide for the 4TH Astronomy Exam
... g. Describe the t-Tauri wind. h. Interpret the physical changes of a forming star on an HR diagram. i. Identify and define the ZAMS line on an HR diagram. j. Describe the relationship between OB associations and HII regions. 2. Main Sequence Stars a. List or identify the luminosity, mass, radius, te ...
... g. Describe the t-Tauri wind. h. Interpret the physical changes of a forming star on an HR diagram. i. Identify and define the ZAMS line on an HR diagram. j. Describe the relationship between OB associations and HII regions. 2. Main Sequence Stars a. List or identify the luminosity, mass, radius, te ...
Astronomy Study Guide Review
... solar wind interacts with the Earth’s magnetic field it causes _____auroras________________. ...
... solar wind interacts with the Earth’s magnetic field it causes _____auroras________________. ...
Stellar Classification Worksheet 2
... Explain how each of the 5 characteristics in the boxes below is used to classify stars. In each box, give 2 examples of stars and their specific characteristics. Use pages 127-129 in the textbook and the examples below to complete the worksheet. ...
... Explain how each of the 5 characteristics in the boxes below is used to classify stars. In each box, give 2 examples of stars and their specific characteristics. Use pages 127-129 in the textbook and the examples below to complete the worksheet. ...
Observing the Night Sky - Constellations
... 1. Orient yourself - Begin your survey of the sky by locating the North Star (Polaris). Your instructor will demonstrate the celestial pipes to you. The use of this instructional tool and your hand at arm's length as a measuring device will assist you in locating objects in the night sky. Once you h ...
... 1. Orient yourself - Begin your survey of the sky by locating the North Star (Polaris). Your instructor will demonstrate the celestial pipes to you. The use of this instructional tool and your hand at arm's length as a measuring device will assist you in locating objects in the night sky. Once you h ...
Properties of Stars and H
... Surface Temperature of Stars • Surface temperature is a measure of how much energy is being given off on the outside of a star. • Most of the nuclear fusion reactions happen in the core. While nuclear fusion is happening, the core is the hottest place in a star. • Dense things are hotter. Large and ...
... Surface Temperature of Stars • Surface temperature is a measure of how much energy is being given off on the outside of a star. • Most of the nuclear fusion reactions happen in the core. While nuclear fusion is happening, the core is the hottest place in a star. • Dense things are hotter. Large and ...
File
... Earth’s motions cause the apparent motion of the constellations: a) Earth rotation is from west to east. This causes the stars to “move” from east to west. b) Earth’s revolution causes the seasonal movement of the stars. ...
... Earth’s motions cause the apparent motion of the constellations: a) Earth rotation is from west to east. This causes the stars to “move” from east to west. b) Earth’s revolution causes the seasonal movement of the stars. ...
StarType
... When you look at the stars you’ll notice that some are white, some are yellow, and some are red. Stars are classified according to their colors, ranging from electric blue for the hottest stars to dull red for the coolest stars. Early spectrometers identified emission lines in the stars’ spectrum fo ...
... When you look at the stars you’ll notice that some are white, some are yellow, and some are red. Stars are classified according to their colors, ranging from electric blue for the hottest stars to dull red for the coolest stars. Early spectrometers identified emission lines in the stars’ spectrum fo ...
Chapter 5 Galaxies and Star Systems
... balls. These galaxies contain billions of the stars but have little gas and dust between the stars. Because there is little gas or dust, stars are no longer forming. Most elliptical galaxies contain only old stars. Some galaxies do not have regular shapes, thus they are called irregular galaxies. Th ...
... balls. These galaxies contain billions of the stars but have little gas and dust between the stars. Because there is little gas or dust, stars are no longer forming. Most elliptical galaxies contain only old stars. Some galaxies do not have regular shapes, thus they are called irregular galaxies. Th ...
Solutions
... 1. In class, I told you that if the Sun were a grain of sand and Proxima Centauri (the closest star to the Sun) were another grain of sand, they would be something 20 miles apart. Create a similar analogy for the Milky Way and Andromeda galaxies, only using frisbees or dinner plates to represent the ...
... 1. In class, I told you that if the Sun were a grain of sand and Proxima Centauri (the closest star to the Sun) were another grain of sand, they would be something 20 miles apart. Create a similar analogy for the Milky Way and Andromeda galaxies, only using frisbees or dinner plates to represent the ...
Forces in stars
... and a mass of 2 million million million million million kg (about 300 000 times that of the Earth). This enormous mass means a very high gravitational pull – a person weighing 600 N on the surface of the Earth would have the colossal weight of 16400N if they stood on the 'surface' of the Sun. As muc ...
... and a mass of 2 million million million million million kg (about 300 000 times that of the Earth). This enormous mass means a very high gravitational pull – a person weighing 600 N on the surface of the Earth would have the colossal weight of 16400N if they stood on the 'surface' of the Sun. As muc ...
CYGNUS CONSTELLATION, the Swan Cygnus is
... and west, Lyra to the west, Vulpecula to the south, Pegasus to the southeast and Lacerta to the east. The three-letter abbreviation for the constellation, as adopted by the IAU in 1922, is 'Cyg'. The official constellation boundaries, as set by Eugène Delporte in 1930, are defined as a polygon of 28 ...
... and west, Lyra to the west, Vulpecula to the south, Pegasus to the southeast and Lacerta to the east. The three-letter abbreviation for the constellation, as adopted by the IAU in 1922, is 'Cyg'. The official constellation boundaries, as set by Eugène Delporte in 1930, are defined as a polygon of 28 ...
STARS- hot glowing sphere of gas that produces energy by
... 2] Star brightness A) Actual brightness- brightness right next to a star B) Apparent brightness—brightness as seen from earth 3] Formation of stars A) Nebula (cloud of dust and gas) collapses under its own gravity B) Friction in core causes temperature to reach 10,000,000 c C) fusion begins and a st ...
... 2] Star brightness A) Actual brightness- brightness right next to a star B) Apparent brightness—brightness as seen from earth 3] Formation of stars A) Nebula (cloud of dust and gas) collapses under its own gravity B) Friction in core causes temperature to reach 10,000,000 c C) fusion begins and a st ...
Anw, samenvatting, h15+16
... By using the Cepheid variables, the distance of many nebulae was measured. It was found that these nebulae formed a huge sphere. The centre of this sphere is the centre of our galaxy. Our solar system is towards the outer edge of this sphere. The Doppler effect: The Doppler effect applies to both so ...
... By using the Cepheid variables, the distance of many nebulae was measured. It was found that these nebulae formed a huge sphere. The centre of this sphere is the centre of our galaxy. Our solar system is towards the outer edge of this sphere. The Doppler effect: The Doppler effect applies to both so ...
Ast 405, Pulsating Stars The following is based Chapter 14 of the
... • 1. Stars whose brightness varies regularly due to some internal mechanism. • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL relation is of crucial importance in Astrophysi ...
... • 1. Stars whose brightness varies regularly due to some internal mechanism. • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL relation is of crucial importance in Astrophysi ...
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.