H-R Diagram
... dust. The rest, as they say, is history. • We now know that stars (the sun included) are born in dust clouds, redden and swell to many times their original size as they age, then end their lives in incredible explosions that leave the most bizarre objects in the universe behind. • They are the major ...
... dust. The rest, as they say, is history. • We now know that stars (the sun included) are born in dust clouds, redden and swell to many times their original size as they age, then end their lives in incredible explosions that leave the most bizarre objects in the universe behind. • They are the major ...
1. absolute brightness -
... stars, few parsecs across, less than 20 million years old (comparatively young) • Globular cluster - tightly packed stars, 10,000’s to millions of stars, about 50 parsecs across, at least ...
... stars, few parsecs across, less than 20 million years old (comparatively young) • Globular cluster - tightly packed stars, 10,000’s to millions of stars, about 50 parsecs across, at least ...
ASTR101 Unit 10 Assessment Answer Key 1. Mass, luminosity, size
... from about 60 solar masses to about 1/12 solar mass, in luminosity from about 1,000,000 to 1/10,000 solar luminosities, in radius from about 1,000 to 1/10 solar radii, in surface temperature from about 35,000 to 3,000 K, and in age, from about 13 billion years to stars that are just now being born. ...
... from about 60 solar masses to about 1/12 solar mass, in luminosity from about 1,000,000 to 1/10,000 solar luminosities, in radius from about 1,000 to 1/10 solar radii, in surface temperature from about 35,000 to 3,000 K, and in age, from about 13 billion years to stars that are just now being born. ...
this article as a PDF
... away, M42 is a great target to view in small telescopes. This is due not only to its brightness, but also to its wonderful cloud structure, which in telescopes takes on a clearly three-dimensional shape. Observers new and old come back to M42 time and time again because of the wealth of detail visib ...
... away, M42 is a great target to view in small telescopes. This is due not only to its brightness, but also to its wonderful cloud structure, which in telescopes takes on a clearly three-dimensional shape. Observers new and old come back to M42 time and time again because of the wealth of detail visib ...
Stars
... – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
... – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
DR 19.2 - Cobb Learning
... 20. As they age, ______________________ stars move up and to the right on an H-R diagram. Match the correct description with the correct term. Write the letter in the space provided. ______ 21. stars with low mass, low temperature, and low absolute magnitude ______ 22. small hot stars that are dimme ...
... 20. As they age, ______________________ stars move up and to the right on an H-R diagram. Match the correct description with the correct term. Write the letter in the space provided. ______ 21. stars with low mass, low temperature, and low absolute magnitude ______ 22. small hot stars that are dimme ...
MS PowerPoint - National Schools` Observatory
... well if you get within 2 light-years of that value. Velocity : The official value is around 90 km/sec, but again, if you get within 20% of that figure, then you are doing very well. Don’t forget, this is only the velocity perpendicular (sideways) to our line of sight. So, by combining simple measure ...
... well if you get within 2 light-years of that value. Velocity : The official value is around 90 km/sec, but again, if you get within 20% of that figure, then you are doing very well. Don’t forget, this is only the velocity perpendicular (sideways) to our line of sight. So, by combining simple measure ...
sc_examII_fall_2002 - University of Maryland
... a) The Sun’s coordinates on the HR Diagram are: luminosity = ______ and spectral type = _______. b) Indicate on the HR Diagram above where you would find a red giant star with the letter X. c) The axis labeled spectral type could also be labeled ____________________________. d) Indicate where you wo ...
... a) The Sun’s coordinates on the HR Diagram are: luminosity = ______ and spectral type = _______. b) Indicate on the HR Diagram above where you would find a red giant star with the letter X. c) The axis labeled spectral type could also be labeled ____________________________. d) Indicate where you wo ...
doc - Eu-Hou
... Supernovae of type Ia can be used as standard candles to measure the distance D of galaxies. It is one method among others (see also the exercise on Cepheid method) to scale the Universe. This method enables to study very distant objects because supernovae are very bright. The luminosity of supernov ...
... Supernovae of type Ia can be used as standard candles to measure the distance D of galaxies. It is one method among others (see also the exercise on Cepheid method) to scale the Universe. This method enables to study very distant objects because supernovae are very bright. The luminosity of supernov ...
How Stars Form Powerpoint
... open and globular clusters are that the globular clusters are very old, while the open clusters are much younger Absence of massive Main Sequence stars in the globular cluster is due to its extreme age Stars have already used up their fuel and have moved off the Main Sequence. ...
... open and globular clusters are that the globular clusters are very old, while the open clusters are much younger Absence of massive Main Sequence stars in the globular cluster is due to its extreme age Stars have already used up their fuel and have moved off the Main Sequence. ...
Stars - Weebly
... – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
... – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
Stars and the Main Sequence
... Temperature,Luminosity, Mass relation during core H-burning: It turns out that as a function of mass there is a rather unique relationship between • surface temperature (can be measured from contineous spectrum) • luminosity (can be measured if distance is known) ...
... Temperature,Luminosity, Mass relation during core H-burning: It turns out that as a function of mass there is a rather unique relationship between • surface temperature (can be measured from contineous spectrum) • luminosity (can be measured if distance is known) ...
Life Cycle of Stars
... faster than smaller stars – Their main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
... faster than smaller stars – Their main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
NCEA Level 2 Earth and Space Science (91192) 2015
... begin to collide and form bigger masses. The bigger masses collect more particles due to increasing gravitational field strength. There are two things that affect the formation of planets – temperature and the presence or absence of solar winds. The inner planets have formed in a higher temperature ...
... begin to collide and form bigger masses. The bigger masses collect more particles due to increasing gravitational field strength. There are two things that affect the formation of planets – temperature and the presence or absence of solar winds. The inner planets have formed in a higher temperature ...
NCEA Level 2 Earth and Space Science (91192) 2015
... begin to collide and form bigger masses. The bigger masses collect more particles due to increasing gravitational field strength. There are two things that affect the formation of planets – temperature and the presence or absence of solar winds. The inner planets have formed in a higher temperature ...
... begin to collide and form bigger masses. The bigger masses collect more particles due to increasing gravitational field strength. There are two things that affect the formation of planets – temperature and the presence or absence of solar winds. The inner planets have formed in a higher temperature ...
Two Dissipating Exoplanet Atmospheres Taken from: Hubble
... HUBBLE 2010: SCIENCE YEAR IN REVIEW ...
... HUBBLE 2010: SCIENCE YEAR IN REVIEW ...
Star of Bethlehem
In Christian tradition, the Star of Bethlehem, also called the Christmas Star, revealed the birth of Jesus to the Biblical Magi, and later led them to Bethlehem. The star appears only in the nativity story of the Gospel of Matthew, where astrologers from the east are inspired by the star to travel to Jerusalem. There they meet King Herod of Judea, and ask where the king of the Jews had been born. Herod, following a verse from the Book of Micah interpreted as a prophecy, directs them to Bethlehem, to the south of Jerusalem. The star leads them to Jesus' home in the town, where they worship him and give him gifts. The wise men are then given a divine warning not to return to Herod so they return home by a different route.Many Christians see the star as a miraculous sign to mark the birth of the Christ (or messiah). Some theologians claimed that the star fulfilled a prophecy, known as the Star Prophecy. Astronomers have made several attempts to link the star to unusual astronomical events, such as a conjunction of Jupiter and Saturn, a comet or a supernova.Many modern scholars do not consider the story to be describing a historical event but a pious fiction created by the author of the Gospel of Matthew.The subject is a favorite at planetarium shows during the Christmas season, although the Biblical account describes Jesus with a broader Greek word, which can mean either ""infant"" or ""child"" (paidon), rather than the more specific word for infant (brephos), possibly implying that some time has passed since the birth. The visit is traditionally celebrated on Epiphany (January 6) in Western Christianity.