Stars, Galaxies & Universe
... • During nuclear fusion, what does hydrogen fuse into? • helium • What is graphed on the H-R diagram? • brightness & temperature ...
... • During nuclear fusion, what does hydrogen fuse into? • helium • What is graphed on the H-R diagram? • brightness & temperature ...
Section 27.2
... 27.2 Temperature and luminosity H-R diagrams are useful because they help astronomers categorize stars into groups: Main sequence stars, like the Sun, are in a very stable part of their life cycle. White dwarfs are hot and dim and cannot be seen without a telescope. Red giants are cool and ...
... 27.2 Temperature and luminosity H-R diagrams are useful because they help astronomers categorize stars into groups: Main sequence stars, like the Sun, are in a very stable part of their life cycle. White dwarfs are hot and dim and cannot be seen without a telescope. Red giants are cool and ...
Variable Stars: Pulsation, Evolution and applications to Cosmology
... distances are known. HR diagram for a cluster whose stars are all assumed to be at the distance – thus mv is just like MV Distance modulus (m – M) can be obtained by determining the offste to the main sequence from nearby stars whose distances are known. ...
... distances are known. HR diagram for a cluster whose stars are all assumed to be at the distance – thus mv is just like MV Distance modulus (m – M) can be obtained by determining the offste to the main sequence from nearby stars whose distances are known. ...
Today`s Powerpoint
... Why is the gas ionized? Remember, takes energetic UV photons to ionize H. Hot, massive stars produce huge amounts of these. Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are form ...
... Why is the gas ionized? Remember, takes energetic UV photons to ionize H. Hot, massive stars produce huge amounts of these. Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are form ...
Chapter 11: Stars
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
Last time: Star Clusters (sec. 19.6)
... deficit compared to gravity, so core contracts, heating up (just like for a protostar). But the overlying layers heat as well, causing H-burning just outside the core to become very rapid H shell-burning. See Fig. 20-3. So star gets brighter (L rises) even though it has lost its fuel at the center ...
... deficit compared to gravity, so core contracts, heating up (just like for a protostar). But the overlying layers heat as well, causing H-burning just outside the core to become very rapid H shell-burning. See Fig. 20-3. So star gets brighter (L rises) even though it has lost its fuel at the center ...
Project 2. CCD Photometry
... Differences in response come from many factors: size and condition of the telescope optics, number and type of optics in the system, bandpass and quality of the filter, response function of the CCD, etc. To get around these problems, systems of standard stars have been set up so obser ...
... Differences in response come from many factors: size and condition of the telescope optics, number and type of optics in the system, bandpass and quality of the filter, response function of the CCD, etc. To get around these problems, systems of standard stars have been set up so obser ...
Stellar Evolution - Hays High Indians
... – Small low mass stars can take billions of years to form – More massive stars can completely form in a few hundred thousand years ...
... – Small low mass stars can take billions of years to form – More massive stars can completely form in a few hundred thousand years ...
Binary Star Systems - d_smith.lhseducators.com
... • In a telescope, an optical double looks like a binary star system, 2 stars that are in orbit around a common center of mass. • However, they’re really far apart from each other. They just happen to be in the same part of the sky. • Mizar and Alcor are an optical double pair. ...
... • In a telescope, an optical double looks like a binary star system, 2 stars that are in orbit around a common center of mass. • However, they’re really far apart from each other. They just happen to be in the same part of the sky. • Mizar and Alcor are an optical double pair. ...
Stars
... the seas with the stars' help. Characters of myth and legend were used to name and tell the stories of the stars such as the group of stars that looked like a man with a sword (or bow and arrow) was named Orion, for the famous hunter in Greek mythology. ...
... the seas with the stars' help. Characters of myth and legend were used to name and tell the stories of the stars such as the group of stars that looked like a man with a sword (or bow and arrow) was named Orion, for the famous hunter in Greek mythology. ...
the May 2017 Newsletter!
... at intervals to see if they had opened up enough to appear separated. Our observing evening records over the past few years suggest that we sometimes thought we could split them, and sometimes thought we couldn’t split them. However, on this evening, although very close, the star could quite easily ...
... at intervals to see if they had opened up enough to appear separated. Our observing evening records over the past few years suggest that we sometimes thought we could split them, and sometimes thought we couldn’t split them. However, on this evening, although very close, the star could quite easily ...
Stars, Constellations, and Quasars
... the equinoxes, there are 12 hours of daylight and 12 hours of darkness at every location on Earth. This is because the Earth’s axis points neither toward nor away from the Sun. The Sun is directly overhead at the equator during equinoxes. ...
... the equinoxes, there are 12 hours of daylight and 12 hours of darkness at every location on Earth. This is because the Earth’s axis points neither toward nor away from the Sun. The Sun is directly overhead at the equator during equinoxes. ...
DO NOW - PBworks
... **Teacher will model how to do this** 2. For each star, put an “X” next to the element name for each element it has on RM 21. ...
... **Teacher will model how to do this** 2. For each star, put an “X” next to the element name for each element it has on RM 21. ...
Astronomy Activity: The Life-Line of the Stars
... very faintest stars visible with the naked eye, magnitude 6 stars*. All stars are not the same distance away. Obviously, a star which is far away will appear dimmer than a similar star which is closer. We adjust for the distance of stars by giving stars an absolute brightness . The absolute magnitud ...
... very faintest stars visible with the naked eye, magnitude 6 stars*. All stars are not the same distance away. Obviously, a star which is far away will appear dimmer than a similar star which is closer. We adjust for the distance of stars by giving stars an absolute brightness . The absolute magnitud ...
Events: - Temecula Valley Astronomers
... Now, look back at Jupiter again. To the left or east of Jupiter is the constellation Leo. Leo (The Lion) is our spring constellation that enters the beginning of the ‘Galaxy Constellations’ well into the summer months. The “head”, “shoulders” and “Chest” of Leo forms what looks like a “sickle” or re ...
... Now, look back at Jupiter again. To the left or east of Jupiter is the constellation Leo. Leo (The Lion) is our spring constellation that enters the beginning of the ‘Galaxy Constellations’ well into the summer months. The “head”, “shoulders” and “Chest” of Leo forms what looks like a “sickle” or re ...
Two Summers in the UCSC Science Internship Program
... stars are unusual: Stars are known to form in clusters, so it is rare to find a young, recently formed star in isolation. This anomalous behavior makes field stars an exciting and hotly debated subject. One theory proposes that field stars do, in fact, form by themselves; another claims that field s ...
... stars are unusual: Stars are known to form in clusters, so it is rare to find a young, recently formed star in isolation. This anomalous behavior makes field stars an exciting and hotly debated subject. One theory proposes that field stars do, in fact, form by themselves; another claims that field s ...
STUDY GUIDE:
... Stars are created in swirling masses of gas and dust particles called a nebula. A star is fueled by internal nuclear energy, in a process called thermonuclear fusion, and it stays together due to the forces of its own gravitation. The hotter a star’s core, or center, the more reactions it produces. ...
... Stars are created in swirling masses of gas and dust particles called a nebula. A star is fueled by internal nuclear energy, in a process called thermonuclear fusion, and it stays together due to the forces of its own gravitation. The hotter a star’s core, or center, the more reactions it produces. ...
Visual Photometry - El Camino College
... human eye can detect stars brighter than about 6th magnitude when in a very dark site (far from city lights). Unfortunately, around El Camino, the eye can barely see 4th magnitude stars due to all of the light pollution from the surrounding LA city lights. However, with the additional light collecti ...
... human eye can detect stars brighter than about 6th magnitude when in a very dark site (far from city lights). Unfortunately, around El Camino, the eye can barely see 4th magnitude stars due to all of the light pollution from the surrounding LA city lights. However, with the additional light collecti ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.