Hungry Young Stars: A New Explanation for the FU Ori Outbursts
... • We provide an explanation for the origin of FU Ori bursts. • A young star devours embryos that form in the disk, resulting in colossal bursts of luminosity. This process repeats as long as nebular material rains onto the disk. • The new feature in our model is the self-consistent formation and evo ...
... • We provide an explanation for the origin of FU Ori bursts. • A young star devours embryos that form in the disk, resulting in colossal bursts of luminosity. This process repeats as long as nebular material rains onto the disk. • The new feature in our model is the self-consistent formation and evo ...
H R Diagram Online Activity
... 5. “On this diagram, the higher (_____________) temperatures are on the _____________, and the lower (_________________) temperatures are on the ____________________.” 6. “A star in the ____________ ____________ corner of the diagram would be ________ and ___________. A star in the _____________ ___ ...
... 5. “On this diagram, the higher (_____________) temperatures are on the _____________, and the lower (_________________) temperatures are on the ____________________.” 6. “A star in the ____________ ____________ corner of the diagram would be ________ and ___________. A star in the _____________ ___ ...
ASTR-1020: Astronomy II Course Lecture Notes - Faculty
... e) Soon, T gets high enough to lift degeneracy =⇒ HSE is reinstated =⇒ red giant becomes stable (i.e., a red giant clump star). 4. Stars greater than 4 M burn He in a gradual manner — no runaway, hence no flash. 5. After He is used up, more massive stars can fuse heavier elements. D. Russell-Vogt T ...
... e) Soon, T gets high enough to lift degeneracy =⇒ HSE is reinstated =⇒ red giant becomes stable (i.e., a red giant clump star). 4. Stars greater than 4 M burn He in a gradual manner — no runaway, hence no flash. 5. After He is used up, more massive stars can fuse heavier elements. D. Russell-Vogt T ...
Galaxy Notes Presentation
... Cannot actually count the number of stars in the galaxy, can estimate as roughly 100 billion ...
... Cannot actually count the number of stars in the galaxy, can estimate as roughly 100 billion ...
2. A giant hand took one of the planets discovered
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
Final Exam, Dec. 19, 2015 - Physics@Brock
... (a) Kepler. (b) Galileo. (c) Copernicus. (d) Brahe. 60. The magnetic field within the sunspot is lower than the Sun’s average magnetic field. (a) True. (b) False. 61. The Maunder minimum refers to (a) the lowest temperature at which hydrogen fusion takes place. (b) the layer on the Sun’s surface whe ...
... (a) Kepler. (b) Galileo. (c) Copernicus. (d) Brahe. 60. The magnetic field within the sunspot is lower than the Sun’s average magnetic field. (a) True. (b) False. 61. The Maunder minimum refers to (a) the lowest temperature at which hydrogen fusion takes place. (b) the layer on the Sun’s surface whe ...
V: 0
... **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. ...
Chapter 30 Notes
... As the planetary nebula disperses; gravity causes the remaining matter in the star to collapse inward until it cannot be pressed further together. A hot, extremely dense core of matter is left behind. This mass is called a white dwarf and can shine for billions of years before it cools completely. S ...
... As the planetary nebula disperses; gravity causes the remaining matter in the star to collapse inward until it cannot be pressed further together. A hot, extremely dense core of matter is left behind. This mass is called a white dwarf and can shine for billions of years before it cools completely. S ...
What is a star?
... mean the actual brightness of a star. They measure it on a scale called absolute magnitude. • Absolute magnitude is a measure of how bright a star would be if the star were located at a standard distance. • Absolute magnitude is a measure of the brightness of a star whose distance from Earth is know ...
... mean the actual brightness of a star. They measure it on a scale called absolute magnitude. • Absolute magnitude is a measure of how bright a star would be if the star were located at a standard distance. • Absolute magnitude is a measure of the brightness of a star whose distance from Earth is know ...
Lecture 9a: More on Star formation and evolution 10/22
... Nature. Need to have Be+He reaction occur before the Be decays ! slows up reaction Larger electric repulsion than p-p as larger electric charge (2 for He and 4 for Be). Therefore need about 100,000,000 degrees K for He burning ! Stars like our Sun remain main sequence longer due to this PHYS 162 ...
... Nature. Need to have Be+He reaction occur before the Be decays ! slows up reaction Larger electric repulsion than p-p as larger electric charge (2 for He and 4 for Be). Therefore need about 100,000,000 degrees K for He burning ! Stars like our Sun remain main sequence longer due to this PHYS 162 ...
Volume 4 (Issue 3), March 2015
... photograph – the earliest really good picture, of an Andromedid, was taken by L. Weinek, from Prague, as long ago as 27 November 1885 – but meteor spectra are much more difficult, because one never knows Page no. 02 ...
... photograph – the earliest really good picture, of an Andromedid, was taken by L. Weinek, from Prague, as long ago as 27 November 1885 – but meteor spectra are much more difficult, because one never knows Page no. 02 ...
GEARS Workshop Monday - Georgia Southern University
... our own Sun, have found a remarkable object where the nuclear reactor that once powered it has only just shut down. This star, the hottest known white dwarf, H1504+65, seems to have been stripped of its entire outer regions during its death throes leaving behind the core that formed its power plant. ...
... our own Sun, have found a remarkable object where the nuclear reactor that once powered it has only just shut down. This star, the hottest known white dwarf, H1504+65, seems to have been stripped of its entire outer regions during its death throes leaving behind the core that formed its power plant. ...
Constellations and Distances to Stars
... How can we find the distance from Earth to stars? • Parallax • Stars within the same constellation are not necessarily close. They could appear to be almost touching and actually be one trillion kilometers apart. Very few stars are gravitationally bound to one another. • One way to know when a sta ...
... How can we find the distance from Earth to stars? • Parallax • Stars within the same constellation are not necessarily close. They could appear to be almost touching and actually be one trillion kilometers apart. Very few stars are gravitationally bound to one another. • One way to know when a sta ...
astronomy practice test ch 9
... 21. The parallax of the star 75 Leo is 0.10, and its apparent visual magnitude is +5.18. The absolute visual magnitude of 75 Leo is ____________________. 22. ____________________ can be used to determine the distance to a star when the spectrum of the star can be used to determine its spectral type ...
... 21. The parallax of the star 75 Leo is 0.10, and its apparent visual magnitude is +5.18. The absolute visual magnitude of 75 Leo is ____________________. 22. ____________________ can be used to determine the distance to a star when the spectrum of the star can be used to determine its spectral type ...
life cycle of stars notes
... of star are blown off spectacularly in a supernova. 5. Massive star becomes neutron star 6. Supermassiv e star becomes a black hole ...
... of star are blown off spectacularly in a supernova. 5. Massive star becomes neutron star 6. Supermassiv e star becomes a black hole ...
Antares - Emmi
... the suns 5700 degrees Kelvin.( Kelvin is unit used to measure incredibly hot objects or stars Kelvin is 272 degrees Celsius) Even though Antares is much colder it is brighter because it is much larger ...
... the suns 5700 degrees Kelvin.( Kelvin is unit used to measure incredibly hot objects or stars Kelvin is 272 degrees Celsius) Even though Antares is much colder it is brighter because it is much larger ...
Chapter 20 Stellar Evolution (20.1-20.3)
... expands into interstellar space, forming a “planetary nebula.” (No planet is ...
... expands into interstellar space, forming a “planetary nebula.” (No planet is ...
Luminosity and brightness
... (b) the distance of the star from the observer on the Earth If we have two stars of the same luminosity with one star double the distance of the other from the Earth the closer star will look four times brighter. It obeys the inverse square law. The photograph shows the Pleiades star cluster. The br ...
... (b) the distance of the star from the observer on the Earth If we have two stars of the same luminosity with one star double the distance of the other from the Earth the closer star will look four times brighter. It obeys the inverse square law. The photograph shows the Pleiades star cluster. The br ...
October 2011
... What's Up - A Silver Coin, Fish’s Mouth, & God’s Eye The Silver Coin Galaxy is so shiny and hard edged, it can be one of three galaxies visible to an unaided eye (the others are M31, M33). Also known as NGC 253 (the galaxy that rhymes) or Sculptor Galaxy for its southern home in the formless constel ...
... What's Up - A Silver Coin, Fish’s Mouth, & God’s Eye The Silver Coin Galaxy is so shiny and hard edged, it can be one of three galaxies visible to an unaided eye (the others are M31, M33). Also known as NGC 253 (the galaxy that rhymes) or Sculptor Galaxy for its southern home in the formless constel ...
Basic data of CoRoT-Exo-2b - tls
... Spectra taken with mulit-object spectrograph: Is the star a giant or dwarf, what is the mass of the star? Is the transit really on the star, or is there an eclipsing binary within the photometric mask (on/off photometry with high resolution). Could the object be a triple star, with two faint compani ...
... Spectra taken with mulit-object spectrograph: Is the star a giant or dwarf, what is the mass of the star? Is the transit really on the star, or is there an eclipsing binary within the photometric mask (on/off photometry with high resolution). Could the object be a triple star, with two faint compani ...
Science Olympiad 2008 Reach for the Stars Division B
... 88. If/when our Sun becomes a white dwarf, it will be mostly made of: A) hydrogen B) helium C) carbon D) neutrons 89. A teaspoonful of white dwarf material at Earth's surface would weigh: A) the same as a teaspoonful of Earthlike material B) about the same as Mt. Everest C) about the same as the E ...
... 88. If/when our Sun becomes a white dwarf, it will be mostly made of: A) hydrogen B) helium C) carbon D) neutrons 89. A teaspoonful of white dwarf material at Earth's surface would weigh: A) the same as a teaspoonful of Earthlike material B) about the same as Mt. Everest C) about the same as the E ...
The Solar Neighborhood
... The globular star clusters are bright, and can be seen for a long distance. Their distances can be estimated accurately from their main sequence turnoffs, as well as by measuring the periods of variable stars that belong to each cluster. In the table below are listed several dozen Galactic globular ...
... The globular star clusters are bright, and can be seen for a long distance. Their distances can be estimated accurately from their main sequence turnoffs, as well as by measuring the periods of variable stars that belong to each cluster. In the table below are listed several dozen Galactic globular ...
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.