Test 2, November 14, 2016 - Physics@Brock
... (b) new spectral lines appear in the spectrum. (c) it is blueshifted. (d) photons of certain wavelengths are absorbed. 37. What is the most abundant chemical element in the main sequence stars? (a) Oxygen (O). (b) Carbon (C). (c) Helium (He) (d) Hydrogen (H). 38. The absorption lines of a main seque ...
... (b) new spectral lines appear in the spectrum. (c) it is blueshifted. (d) photons of certain wavelengths are absorbed. 37. What is the most abundant chemical element in the main sequence stars? (a) Oxygen (O). (b) Carbon (C). (c) Helium (He) (d) Hydrogen (H). 38. The absorption lines of a main seque ...
April - Bristol Astronomical Society
... ignored. It does however have one other redeeming feature, it is home to one of the loveliest open clusters in the sky, Praesepe, now more commonly known as the Beehive Cluster or M44. This lovely group of stars is just visible to the naked-eye even from Bristol, and a stunning sight in binoculars T ...
... ignored. It does however have one other redeeming feature, it is home to one of the loveliest open clusters in the sky, Praesepe, now more commonly known as the Beehive Cluster or M44. This lovely group of stars is just visible to the naked-eye even from Bristol, and a stunning sight in binoculars T ...
File
... • Since the objects in space are very far away, the angles x and y will be VERY close to each other • In fact, the difference in angles is usually measure in units called arcseconds – A degree is divided into 60 minutes, and a minute into 60 seconds, so an arcsecond is 1/3600th of a degree! – …and ...
... • Since the objects in space are very far away, the angles x and y will be VERY close to each other • In fact, the difference in angles is usually measure in units called arcseconds – A degree is divided into 60 minutes, and a minute into 60 seconds, so an arcsecond is 1/3600th of a degree! – …and ...
E3 – Stellar distances
... that galaxy are approximately the same distance away from the earth. What we really need is a light source of known luminosity in the galaxy. If we had this then we could make comparisons with the other stars and judge their luminosities. In other words we need a ‘standard candle’ –that is a star of ...
... that galaxy are approximately the same distance away from the earth. What we really need is a light source of known luminosity in the galaxy. If we had this then we could make comparisons with the other stars and judge their luminosities. In other words we need a ‘standard candle’ –that is a star of ...
Distances to the Stars in Leo
... matter for astronomers, or anyone else for that matter, to determine the absolute magnitude of the star using the distance-magnitude relation. However, most stars are too far away to have a measurable parallax. In these cases, the distance to the star must be determined by some other method. We can ...
... matter for astronomers, or anyone else for that matter, to determine the absolute magnitude of the star using the distance-magnitude relation. However, most stars are too far away to have a measurable parallax. In these cases, the distance to the star must be determined by some other method. We can ...
answers
... 1) The Sun looks much brighter than all the other stars because it is so close. It seems to have a fairly average luminosity. Other stars have luminosities that are up to a million times greater and down to a million times smaller. How do we know the luminosities of these stars? Review: We measure t ...
... 1) The Sun looks much brighter than all the other stars because it is so close. It seems to have a fairly average luminosity. Other stars have luminosities that are up to a million times greater and down to a million times smaller. How do we know the luminosities of these stars? Review: We measure t ...
Virtual Sky II (Rev 10/11)
... Give the two dates when the Sun is at the position where the path crosses itself. ___________ _________________ ...
... Give the two dates when the Sun is at the position where the path crosses itself. ___________ _________________ ...
_____ 1. Which of the following statements is NOT true about stars
... ___________________ once it has used up all of its hydrogen. The center of the star will _________________ as the atmosphere begins to grow large. The mass of the star will determine if it will be a red giant or a supergiant. 11. What is the difference between a red giant and a supergiant? _________ ...
... ___________________ once it has used up all of its hydrogen. The center of the star will _________________ as the atmosphere begins to grow large. The mass of the star will determine if it will be a red giant or a supergiant. 11. What is the difference between a red giant and a supergiant? _________ ...
Star Formation
... 10 million Kelvin needed to start fusion in a million years (1/50 time taken by sun) • An M-type star less massive than our sun takes one billion years to form ...
... 10 million Kelvin needed to start fusion in a million years (1/50 time taken by sun) • An M-type star less massive than our sun takes one billion years to form ...
Nov 2017 - What`s Out Tonight?
... A Light Year (ly) is a unit of length and is equal to the discan be seen with the naked eye. tance light travels in one year. Since light moves at the speed of Our 186,282 miles a second, one light year is nearly 6 trillion miles Double Stars Moon long. The closest nighttime star visible to the nake ...
... A Light Year (ly) is a unit of length and is equal to the discan be seen with the naked eye. tance light travels in one year. Since light moves at the speed of Our 186,282 miles a second, one light year is nearly 6 trillion miles Double Stars Moon long. The closest nighttime star visible to the nake ...
Module 6: “The Message of Starlight Assignment 9: Parallax, stellar
... magnitude: how bright a star would be at a fixed distance from the sun. The unit of distance generally used in astronomy is called a parsec: one parsec is 3.26 light years. (A light year is how far light travels in a year.) Now, if we know the distance to the star, we can convert its brightness, mea ...
... magnitude: how bright a star would be at a fixed distance from the sun. The unit of distance generally used in astronomy is called a parsec: one parsec is 3.26 light years. (A light year is how far light travels in a year.) Now, if we know the distance to the star, we can convert its brightness, mea ...
The Galactic Super Star Cluster Westerlund 1
... expected from the integrated emission from premain sequence stars with M i<3 M. If we extrapolate from the observed stars using a Kroupa IMF, we find that Westerlund 1 is ~90 times the mass of Orion. Therefore, we would have expected diffuse emission with L x = 3x10 35 erg s-1, which is five times ...
... expected from the integrated emission from premain sequence stars with M i<3 M. If we extrapolate from the observed stars using a Kroupa IMF, we find that Westerlund 1 is ~90 times the mass of Orion. Therefore, we would have expected diffuse emission with L x = 3x10 35 erg s-1, which is five times ...
Math Guide
... Learning Success Center on the fifth floor of the Edmon Low Library (744-5818), and google specific topics. A couple questions on every astronomy test will involve some of the math below. Mastery of it will pay you dividends at OSU and for the rest of your life! Astronomical Magnitude Scale (ASTR 10 ...
... Learning Success Center on the fifth floor of the Edmon Low Library (744-5818), and google specific topics. A couple questions on every astronomy test will involve some of the math below. Mastery of it will pay you dividends at OSU and for the rest of your life! Astronomical Magnitude Scale (ASTR 10 ...
Stars
... the same nebula of dust and gas. This is something that may never be proven, however. Alpha Centauri B is an orange K2 star, smaller and dimmer than A. They orbit about each other at roughly the distance of Uranus from our sun with a period of 80 years. This close orbit of two massive objects would ...
... the same nebula of dust and gas. This is something that may never be proven, however. Alpha Centauri B is an orange K2 star, smaller and dimmer than A. They orbit about each other at roughly the distance of Uranus from our sun with a period of 80 years. This close orbit of two massive objects would ...
1” “Sky-Notes” of the Open University Astronomy Club. April 2006. 1
... periastron passage in the 1930’s has again been observed indicating the presence of an unseen companion in the system, hence the need for continuing observations. ...
... periastron passage in the 1930’s has again been observed indicating the presence of an unseen companion in the system, hence the need for continuing observations. ...
Auriga (constellation)
Auriga is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one of the 88 modern constellations. Located north of the celestial equator, its name is the Latin word for ""charioteer"", associating it with various mythological charioteers, including Erichthonius and Myrtilus. Auriga is most prominent during winter evenings in the Northern Hemisphere, along with the five other constellations that have stars in the Winter Hexagon asterism. Because of its northern declination, Auriga is only visible in its entirety as far as 34° south; for observers farther south it lies partially or fully below the horizon. A large constellation, with an area of 657 square degrees, it is half the size of the largest constellation, Hydra.Its brightest star, Capella, is an unusual multiple star system among the brightest stars in the night sky. Beta Aurigae is an interesting variable star in the constellation; Epsilon Aurigae, a nearby eclipsing binary with an unusually long period, has been studied intensively. Because of its position near the winter Milky Way, Auriga has many bright open clusters in its borders, including M36, M37, and M38, popular targets for amateur astronomers. In addition, it has one prominent nebula, the Flaming Star Nebula, associated with the variable star AE Aurigae.In Chinese mythology, Auriga's stars were incorporated into several constellations, including the celestial emperors' chariots, made up of the modern constellation's brightest stars. Auriga is home to the radiant for the Aurigids, Zeta Aurigids, Delta Aurigids, and the hypothesized Iota Aurigids.