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Our Place in Space
Our Place in Space

... Once you have assembled the cards, they can be used either as fact cards or for a variety  of activities in the classroom including:  ...
Document
Document

... • Bright (V ~ 21 at 110 kpc) • Variable stars (P ~ 0.6 day) with distinct light curves ( ~1 mag amplitude) → easily identifiable ...
The Universe - HMXEarthScience
The Universe - HMXEarthScience

... The gravitational force on Earth changes. The universe appears to be expanding. The Jovian planets are aligned with the Sun. Galaxies are becoming more numerous. ...
Unpublished draft available in  format
Unpublished draft available in format

... 3.41 Does it refer to a particular astronomical body or system? If it does not move on to the next question. If it does, consult the Astronomical body & system facet in the schedule and if more than one concept has t be recognized (e.g. a star at a certain stage and of a certain spectral type) cite ...
No Slide Title
No Slide Title

NATS 1311-From the Cosmos to Earth
NATS 1311-From the Cosmos to Earth

... Behind him, his faithful dog, Canis Major, is chasing Lepus, the Hare. ...
Proper Motion
Proper Motion

... Tangential velocity vt is related to proper motion, μ, as follows: μ = π/4.740 *vt (arcsec/yr) where π is annual parallax in arcsec and vt in km/s. ...
NAME_______________________________________
NAME_______________________________________

... ____47. The TREND LINES on the H-R diagram represent A) the average of the patterns of all the data points B) where each data point SHOULD have been after taking human error into account ____48. One of the main purposes of the Parallax Method of calculating distances to stars is to A) calculate the ...
Feb 2008 - Amateur Astronomers, Inc.
Feb 2008 - Amateur Astronomers, Inc.

Study of the X-ray Source Population and the Dark Matter
Study of the X-ray Source Population and the Dark Matter

Twitter Feed ITSO Symposium 2017
Twitter Feed ITSO Symposium 2017

... mass) and external (environment) processes on the galaxy evolution is difficult because high mass galaxies tend to exist in dense environments. For the past decade, the difference between mass-metallicity relations in the cluster versus field environment has been used to disentangle the effect of in ...
ppt-file 2.4 MB
ppt-file 2.4 MB

... harbour life. "Earth would have a slight chance of being habitable in the 47 UMa system," says Franck, "but a water world almost entirely covered by oceans would have a better chance." The 47 UMa system intrigues experts because the star has roughly the same mass, age and spectrum as the Sun. Moreov ...
A Chandra Observation of the Massive Star-Forming
A Chandra Observation of the Massive Star-Forming

... Log Lx (ergs/s) Ks magnitude distribution of all 2MASS sources (9008) in XLFs constructed from hard band luminosities and total luminosities the ACIS-I FOV compared to those (449) detected in X-ray (uncorrected for absorption) compared with Orion XLF from COUP Three color composite MSX image of NGC ...
Document
Document

Gemini - www.BahaiStudies.net
Gemini - www.BahaiStudies.net

... M35 (NGC 2168) is a large, elongated open cluster of magnitude 5; it has an area of approximately 0.2 square degrees, the same size as the full Moon. Its high magnitude means that M35 is visible to the unaided eye under dark skies; under brighter skies it is discernible in binoculars. The 200 stars ...
Lecture 15a - Sierra College Astronomy Home Page
Lecture 15a - Sierra College Astronomy Home Page

Chapter 17 Measuring the Stars
Chapter 17 Measuring the Stars

... diagram, a pattern begins to form: These are the 80 closest stars to us; note the dashed lines of constant radius. The darkened curve is called the main sequence, as this is where most stars are. Also indicated is the white dwarf region; these stars are hot but not very luminous, as they are quite s ...
Unit 3 - Lesson 8.9 Life of Stars Challenge
Unit 3 - Lesson 8.9 Life of Stars Challenge

... A very small, hot star Lasting about 100,000 years, it starts with a core of increased density within a molecular cloud and ends with the formation of a star leading to the development of a Main Sequence Star A large bright star with a cool surface Type of star that cools and fades There are two typ ...
holiday lights - Denver Astronomical Society
holiday lights - Denver Astronomical Society

... The Angel Nebula is a dim and rarely photographed or observed emission and reflection nebula in the constellation Monoceros (the Unicorn) just off the east end of Orion’s belt. The angel figure consists of NGC 2170 and Van den Bergh 67, 68, and 69 that form the head, red heart, the wings and the flo ...
The classification of stellar spectra
The classification of stellar spectra

... Harvard College Observatory. It listed 225,300 stars. The classification sequence included 7 categories named with letters: O,B,A,F,G,K,M. The sequence is solely based on the progression of line patterns in the spectra (A. Maury). Many of the original classes from A through O were dropped, and the o ...
Lecture 6-1: Schematic Evolution of Stars as seen from the core
Lecture 6-1: Schematic Evolution of Stars as seen from the core

... Hydrostatic equilibrium and the ideal gas law connects rc and Tc. With increasing mass, the central pressure has to increase to support the star against gravity. As thermal pressure scales with r while hydrostatic pressure scales with r4/3, a more massive star requires a higher central temperature ( ...
Astronomy 1 – Introductory Astronomy Spring 2014
Astronomy 1 – Introductory Astronomy Spring 2014

... arcseconds with a double quote ("). They are also often abbreviated arcsec and arcmin. In this lab we will use only degrees. When you want to measure lengths or distances on the ground, you use a ruler or tape measure. Similarly, in order to measure angles on the sky, you need a measuring device. In ...
Contents - Classroom Complete Press
Contents - Classroom Complete Press

... together by gravity. Think of a galaxy like a big ship of stars floating around in the empty ocean of space. There isn’t just one ship in this ocean though. There are millions and millions of galaxies. You might think this would make the ocean crowded with ships. It’s not. In fact, the space between ...
HW #02 Solutions
HW #02 Solutions

... star is 9 times greater than the distance of the brighter star. Since the brighter star is 5 pc away, then the dimmer star is 45 pc away. 3. The Earth receives about 1380 Watts/meter2 of energy from the Sun. How much energy does Saturn receive from the Sun (Saturn-Sun distance = 9.5 A.U.)? (A Watt i ...
Star Magnitude - ScienceEducationatNewPaltz
Star Magnitude - ScienceEducationatNewPaltz

... The First Magnitude Stars Table lists the brightest stars in the sky that are -1, 0 and 1 magnitude. Sirius is the brightest at -1.44 magnitude. These stars are referred to as First Magnitude stars since they are all 1 magnitude or brighter. Brightness of stars is assigned a number starting with the ...
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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.
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