common constellations
... Members of the Underground Railroad were fully aware of the predicament of fleeing slaves. About 1831 the Railroad began to send travelers into the South to secretly teach slaves specific routes they could navigate using Polaris. By the beginning of the Civil War in 1861, about 500 people a year wer ...
... Members of the Underground Railroad were fully aware of the predicament of fleeing slaves. About 1831 the Railroad began to send travelers into the South to secretly teach slaves specific routes they could navigate using Polaris. By the beginning of the Civil War in 1861, about 500 people a year wer ...
Document
... The Second Ascent Giant Branch • Horizontal-branch stars (like main-sequence stars) begin to use up their fuel in the core. • In this case, the star is building up a Carbon core. For stars near 1Mo the temperature never gets high enough for Carbon fusion. • The core begins to contract, releasing gr ...
... The Second Ascent Giant Branch • Horizontal-branch stars (like main-sequence stars) begin to use up their fuel in the core. • In this case, the star is building up a Carbon core. For stars near 1Mo the temperature never gets high enough for Carbon fusion. • The core begins to contract, releasing gr ...
ppt - Astronomy at Swarthmore College
... But…some hot stars have x-ray spectra with quite narrow lines, that are especially strong and high energy - not consistent with line-force instability wind shocks ...
... But…some hot stars have x-ray spectra with quite narrow lines, that are especially strong and high energy - not consistent with line-force instability wind shocks ...
Unit 3 - Lesson 8.9 Life of Stars Challenge
... A cloud of hydrogen gas and dust in space. When the gravitational and pressure forces within the initial cloud become unbalanced, the cloud collapses and breaks into small fragments. The smallest of these fragments contract further to form these pre-stars This catastrophic event is thought to be mai ...
... A cloud of hydrogen gas and dust in space. When the gravitational and pressure forces within the initial cloud become unbalanced, the cloud collapses and breaks into small fragments. The smallest of these fragments contract further to form these pre-stars This catastrophic event is thought to be mai ...
ES Chapter 30
... – A binary star is two stars that are gravitationally bound together and that orbit a common center of mass. – More than half of the stars in the sky are either binary stars or members of multiple-star systems. – Astronomers are able to identify binary stars through several methods. • Accurate measu ...
... – A binary star is two stars that are gravitationally bound together and that orbit a common center of mass. – More than half of the stars in the sky are either binary stars or members of multiple-star systems. – Astronomers are able to identify binary stars through several methods. • Accurate measu ...
Chemical Evolution
... • High abundances (1.7-2.5x solar) indicates that GCs formed rapidly before type Ia's contributed much to the gas (~1 Gyr) • However their remains puzzling patterns in how the different elemental abundances are correlated ...
... • High abundances (1.7-2.5x solar) indicates that GCs formed rapidly before type Ia's contributed much to the gas (~1 Gyr) • However their remains puzzling patterns in how the different elemental abundances are correlated ...
show detail .cdr
... attention span/ age, homogeneity, local ethos and prerequisite knowledge on a particular topic and the syllabus of a board - the duration and various sub topics are chosen accordingly to form a show thus making it a long, a short or an abridged version. For students we especially focus on topics/ su ...
... attention span/ age, homogeneity, local ethos and prerequisite knowledge on a particular topic and the syllabus of a board - the duration and various sub topics are chosen accordingly to form a show thus making it a long, a short or an abridged version. For students we especially focus on topics/ su ...
Observing Double Stars
... Meteorological Observatory in Johannesburg, South Africa. He compiled in 1927 The Southern Double Star Catalog consisting of 1,600 entries. Robert Aitken, with the help of collaborator W.J. Hussey, published in 1932 the New General Catalogue of Double Stars within 120° of the North Pole consisting o ...
... Meteorological Observatory in Johannesburg, South Africa. He compiled in 1927 The Southern Double Star Catalog consisting of 1,600 entries. Robert Aitken, with the help of collaborator W.J. Hussey, published in 1932 the New General Catalogue of Double Stars within 120° of the North Pole consisting o ...
question - UW Canvas
... (actual data). Which cluster is the younger one? a. NGC 1960 b. NGC 2355 c. They are both the same age. d. Not enough information is given to answer this question. ...
... (actual data). Which cluster is the younger one? a. NGC 1960 b. NGC 2355 c. They are both the same age. d. Not enough information is given to answer this question. ...
Document
... Step 2. Wait 10 to 15 minutes until the shadow tip moves a few centimeters. Mark the shadow tip's new position in the same way as the first. Step 3. Draw a straight line through the two marks to obtain an approximate eastwest line. Step 4. Stand with the first mark (west) to your left and the second ...
... Step 2. Wait 10 to 15 minutes until the shadow tip moves a few centimeters. Mark the shadow tip's new position in the same way as the first. Step 3. Draw a straight line through the two marks to obtain an approximate eastwest line. Step 4. Stand with the first mark (west) to your left and the second ...
ASTRO-114--Lecture 37-
... is. If you look with your two eyes and you notice that — well, you don’t even think about it, but your eyes notice that there’s a slightly different perspective. You have a different background behind an object you’re looking at and so you can tell how far away an object is by how much parallax you ...
... is. If you look with your two eyes and you notice that — well, you don’t even think about it, but your eyes notice that there’s a slightly different perspective. You have a different background behind an object you’re looking at and so you can tell how far away an object is by how much parallax you ...
Telescopes and Studying the Stars - team7-1
... observing the sky. A telescope is an instrument that collects electromagnetic radiation from the sky and focuses (or concentrates) it for better observation. There are different kinds of telescopes: optical telescopes and non-optical telescopes. The first telescopes were optical telescopes. This was ...
... observing the sky. A telescope is an instrument that collects electromagnetic radiation from the sky and focuses (or concentrates) it for better observation. There are different kinds of telescopes: optical telescopes and non-optical telescopes. The first telescopes were optical telescopes. This was ...
The Lifecycle of the Stars
... *white dwarfs may only be the size of the earth, but it has the mass equal to half oh the sun. *it is the 6th stage in forming a star. Lifecycle of a star notes *also called a degenerate dwarf *it is a small star made up of electron-degenerate matter. http://en.wikipedia.org/wiki/White_dwarf Electro ...
... *white dwarfs may only be the size of the earth, but it has the mass equal to half oh the sun. *it is the 6th stage in forming a star. Lifecycle of a star notes *also called a degenerate dwarf *it is a small star made up of electron-degenerate matter. http://en.wikipedia.org/wiki/White_dwarf Electro ...
Introduction to SkyMaker and the STEP 1 simulations
... What is stuff? The program is optimised to reproduce 'photometric‘ properties of real galaxies (lensing could be introduced at this stage) galaxy distribution: - galaxies are placed in space in a Poisson distributed way (from z=10 to z=0) - galaxies of different types (E, S0, Sab, Sbc, Scd, Sdm) ar ...
... What is stuff? The program is optimised to reproduce 'photometric‘ properties of real galaxies (lensing could be introduced at this stage) galaxy distribution: - galaxies are placed in space in a Poisson distributed way (from z=10 to z=0) - galaxies of different types (E, S0, Sab, Sbc, Scd, Sdm) ar ...
interactive.hr.diagram
... You need a 100 percent on the quiz to receive a stamp. The stamp is worth 12 points! The stamp is worth ...
... You need a 100 percent on the quiz to receive a stamp. The stamp is worth 12 points! The stamp is worth ...
Lecture 30
... Evolution of the core is controlled by the need for increasingly higher temperatures for nuclear burning of heavier elements: • Initially, burn hydrogen in the core • Once hydrogen is exhausted, too cool to burn helium • Core contracts, heats up • Helium burning stars • If star is massive enough, s ...
... Evolution of the core is controlled by the need for increasingly higher temperatures for nuclear burning of heavier elements: • Initially, burn hydrogen in the core • Once hydrogen is exhausted, too cool to burn helium • Core contracts, heats up • Helium burning stars • If star is massive enough, s ...
A prevalence of dynamo-generated magnetic fields in the
... νmax, decreases as a star expands during the red giant phase10. The comb structure of the spectrum arises from a series of overtone modes separated by the so-called large frequency separation, ∆ν. One of these overtone sequences is seen for each spherical degree, !. For observations of unresolved di ...
... νmax, decreases as a star expands during the red giant phase10. The comb structure of the spectrum arises from a series of overtone modes separated by the so-called large frequency separation, ∆ν. One of these overtone sequences is seen for each spherical degree, !. For observations of unresolved di ...
“Astronomy Picture of the Day” Leads to a Research Breakthrough
... no point sources, which means no stars down to the limiting magnitude of the image. Since these are good Hubble images, the limiting magnitude is very deep, V = 26.9, which corresponds to an absolute magnitude of Mv = 8.4 in the LMC. If we look at all of the currently published models for single-deg ...
... no point sources, which means no stars down to the limiting magnitude of the image. Since these are good Hubble images, the limiting magnitude is very deep, V = 26.9, which corresponds to an absolute magnitude of Mv = 8.4 in the LMC. If we look at all of the currently published models for single-deg ...
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.