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G-stars - Gemini Astronomie
G-stars - Gemini Astronomie

Matariki-Maori New Year
Matariki-Maori New Year

... • The upper atmosphere may indicate long term weather conditions. • Astute, practiced observers can see the difference from year to year. • Can you? ...
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Krupp (1999) broadly defines the interdisciplinary field
Krupp (1999) broadly defines the interdisciplinary field

... fainter than magnitude 3. The spatial relation of the one exception (a magnitude 2.9 star, 7O away) is such that it conceivably could be represented by a cupule on the other side of the crack. (The next nearest bright stars in the sky are in the constellation Scorpius.) Sagittarius does not present ...
Astronomy 114 Problem Set # 7 Due: 30 Apr 2007 SOLUTIONS 1
Astronomy 114 Problem Set # 7 Due: 30 Apr 2007 SOLUTIONS 1

Model of Stars—5 Oct Outline •
Model of Stars—5 Oct Outline •

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UNIT 3 INPUT 2: Notes on Black Holes (BH): Process of Formation

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Final review - Physics and Astronomy
Final review - Physics and Astronomy

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giant molecular clouds

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Big bang galaxies stars Name: Date: 1. The diagram below

... on the calendar model shown below of the inferred history of the universe and on your knowledge of Earth science. The 12-month time line begins with the Big Bang on January 1 and continues to the present time, which is represented by midnight on December 31. Several inferred events and the relative ...
Emission and Absorption Spectra
Emission and Absorption Spectra

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Define the following terms in the space provided

... Stars are much larger than planets. Our Sun is over 100 times the radius of the Earth. There are stars some what smaller than the Sun and stars that are vastly larger than the Sun Star clusters come in two principle forms: open clusters and globular clusters. They may consist of several hundred to s ...
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Chapter 11 Review

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Ch. S1 - Relativity Group

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Slide 1 - Personal.psu.edu

... open and globular clusters are that the globular clusters are very old, while the open clusters are much younger. The absence of massive Main Sequence stars in the globular cluster is due to its extreme age—those stars have already used up their fuel and have moved off the Main Sequence. ...
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Star Evolution

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1_Introduction - The Ohio State University Department of

... What Eratosthenes read: At noon on June 21, Sun is at zenith seen from Syene. What he saw: At noon on June 21, Sun is 7.2° south of zenith seen from Alexandria. What he assumed: Earth is spherical: Sun is very far away. ...
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... 13. Twice during the late stages of the Sun's life it will move upward and ascend the giant branch on the H-R diagram. What will be going on in the Sun's core while it is climbing the giant branch? a. The Sun's core will fuse hydrogen to make helium during both ascents of the giant branch. b. The Su ...
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The Night Sky This Month - Usk Astronomical Society

... The Moon is at perigee (nearest Earth) on the 22nd and at apogee (most distant from Earth) on the 10th. * The names of moons were, at one time, associated with the names of the lunisolar months. The Romans, with the Julian calendar, helped to decouple that tradition. It is only in recent times that ...
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Homework 3 available

... c. (10 points) Only the central 10% of the mass of the Sun is close enough to the core, i.e., hot and dense enough, for thermonuclear fusion to take place. With this in mind (and remembering that only 75% of the mass of the Sun is hydrogen) calculate how long the Sun can shine with its current lumin ...
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... Last Time: Stars “Luminosity class” is added to the spectral type, telling you if it’s main-sequence (a “dwarf”, V), giant (III), or super-giant star (I). The sun is a G2 V. Stars occur in smaller “open” and giant “globular” clusters, with hundreds to millions of stars. Stars in clusters born at th ...
sc_examII_fall_2002 - University of Maryland
sc_examII_fall_2002 - University of Maryland

Astronomy 120
Astronomy 120

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Ursa Minor



Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.
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