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Unit 2-1 Life Cycle of the Sun
Unit 2-1 Life Cycle of the Sun

... The purpose of this activity is to have you observe the changes in the temperature, absolute magnitude, and other observable characteristics of two different types of stars as they go through their life cycles. The absolute magnitude is a measure of how bright a star would appear if it was approxima ...
Society News - Bristol Astronomical Society
Society News - Bristol Astronomical Society

... (Algieba), this is a great double for small telescopes. The primary is a magnitude +2.2 K-class yellow-orange giant, it’s companion is a magnitude +2.5 yellow Gclass star. The pair are separated by 4.4 arcseconds. Just to the west of Leo lies the faint constellation of Cancer, which is home to one o ...
1. If a star`s temperature is doubled but radius is kept constant, by
1. If a star`s temperature is doubled but radius is kept constant, by

Chapter 27 Stars and Galaxies
Chapter 27 Stars and Galaxies

... 2. Elliptical: nearly spherical with very bright centers; no spiral arms No young stars, dust, or gas ...
wk9 (part 1)
wk9 (part 1)

... Which of the following statements about the EPOCH OF CONFINEMENT is TRUE? A. At this instant, quarks became bound in sets of three to produce protons and neutrons, while matter and radiation continued to interact strongly B. The Universe was matter dominated at this epoch C. Protons and electrons fo ...
THE HR DIAGRAM
THE HR DIAGRAM

... The HR diagram included at the end of this Discussion Sheet is called a general HR diagram because it is based on stars of all different types from many different regions of the sky. The objective is to show the distribution of various types of stars and their relative quantities. To create a genera ...
life cycle of stars notes
life cycle of stars notes

... spectacularly in a supernova. 5. Massive star becomes neutron star 6. Supermassiv e star becomes a black hole ...
Lesson 10 Red Shift
Lesson 10 Red Shift

AST 443
AST 443

... radius 15,000 km. Compare this with the average density of the giant’s envelope, if it has a 0.5 solar-mass and its radius is 0.5 A.U. Compare each with the central density of the Sun. ...
Analyzing Spectral Patterns
Analyzing Spectral Patterns

Recap: High Mass Stars
Recap: High Mass Stars

... of the Sun becomes a neutron. • Electrons and neutrons combine into neutrons. • 10 km (6 mi) in diameter with a mass more than our Sun! • A teaspoon of neutron star would be about 10 million tons • Acts like a huge magnet with magnetic poles, can be a pulsar ...
Script - ESA/Hubble
Script - ESA/Hubble

... Next, the outer layers are puffed out, forming a dense cloud of gas and dust that totally obscures the visible light from the star. This stage, called a pre-planetary, or protoplanetary nebula, is tough to observe as it’s so faint — only dim infrared emissions from the dust cloud and reflected starl ...
The Life Cycle of the Stars
The Life Cycle of the Stars

HR Diagram - Geneva 304
HR Diagram - Geneva 304

Figures I through VII in Section 1 on the following sheet
Figures I through VII in Section 1 on the following sheet

... Both Star D and star B appear equally bright in the night sky; which is farther away from the observer (_18_)? How many times farther (_19_)? Of the two light curves in Section 2, which was produced by a cataclysmic variable star (_20_)? Specifically what type of cataclysmic variable (_21_)? Approxi ...
Final Exam Practice Part I
Final Exam Practice Part I

Chapter 21
Chapter 21

... • radii of 20 to several hundred solar radii (they are about the size of Jupiter's orbit!!!!) • two types are red supergiants (Betelgeuse and Antares) and blue supergiants (Rigel) ...
Big bang and Stars
Big bang and Stars

... gas and dust from which stars form. But not this kind of dust Rather: Irregular Grains Of Carbon or Silicon ...
PPT
PPT

Astro 1 & 100 Levine Homework Stars Name:____________________________
Astro 1 & 100 Levine Homework Stars Name:____________________________

... You may want to do the lecture-tutorial on pg 33, Apparent and Absolute Magnitude of Stars, prior to doing this portion of the homework, if you need a refresher on m and M. Ranking questions are 2 points each. Consider the following table of stars: ...
chapter 28 pages 747-752
chapter 28 pages 747-752

... 2. Absorption- dark bands within Caused by a cooler gas in front of the source 3. Emission- all dark with colored bands at certain wavelengths ...
Name: ____________ Period: ______ STAR BIOGRAPHY Name of
Name: ____________ Period: ______ STAR BIOGRAPHY Name of

Space Science Distance Definitions
Space Science Distance Definitions

... • The stars are so far away that observing a star from opposite sides of the Earth would produce a parallax angle much, much too small to detect. We need to use as large a baseline as possible. The largest one we can easily use is the orbit of the Earth. In this case the baseline is the distance bet ...
The Hertzsprung-Russell Diagram
The Hertzsprung-Russell Diagram

Nebular Theory worksheet 2017
Nebular Theory worksheet 2017

... Purpose: To understand the Nebular Theory by correctly putting the descriptions and pictures of the nebula theory in chronological order (with 1 being the start and 7 being the end).To help you complete this task, read the following below. ...
< 1 ... 219 220 221 222 223 224 225 226 227 ... 270 >

Cygnus (constellation)



Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.
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