The Life of a Star
... begins in the core (secondary fusion). Once all fusion reactions stop, the star throws its outer layers into space, forming a planetary nebula – This leaves behind the hot dense core of the red giant. – The remaining core is called a white dwarf. Over time, the white dwarf cools off and becomes a bl ...
... begins in the core (secondary fusion). Once all fusion reactions stop, the star throws its outer layers into space, forming a planetary nebula – This leaves behind the hot dense core of the red giant. – The remaining core is called a white dwarf. Over time, the white dwarf cools off and becomes a bl ...
Lecture 11 - Stars and Atomic Spectra
... Photon energy • Up to now, we have been discussing the wavelength of light as determining it color • However, light comes in discrete packets called photons and the energy of each photon is set by its color or wavelength • From Einstein, we known that the photon energy is inversely proportional to ...
... Photon energy • Up to now, we have been discussing the wavelength of light as determining it color • However, light comes in discrete packets called photons and the energy of each photon is set by its color or wavelength • From Einstein, we known that the photon energy is inversely proportional to ...
A Unique Environmental Studies Program
... The Pointers. Not very far from the Southern Cross you will see two quite bright stars. These are known as "The Pointers". They form part of the constellation of "The Centaur" and, being the two brightest stars in that constellation, are called Alpha Centauri and Beta Centauri. If you look at Alpha ...
... The Pointers. Not very far from the Southern Cross you will see two quite bright stars. These are known as "The Pointers". They form part of the constellation of "The Centaur" and, being the two brightest stars in that constellation, are called Alpha Centauri and Beta Centauri. If you look at Alpha ...
Chapter 24
... • Strong magnetic field • First one discovered in early 1970s • Pulsar (pulsating radio source) • Found in the Crab nebula (remnant of an A.D. 1054 supernova) ...
... • Strong magnetic field • First one discovered in early 1970s • Pulsar (pulsating radio source) • Found in the Crab nebula (remnant of an A.D. 1054 supernova) ...
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 ...
Physics 1025: Lecture 17 Sun (cont.), Stellar Distances, Parallax
... the wavelength shift from the unshifted line λ. The star’s light will be blue-shifted if the star approaches earth. (Note in the case of an expanding nebula like the Crab Nebula, we assume it expands equally in all directions (i.e. spherically) and set VR= VT and can solve for the distance R to the ...
... the wavelength shift from the unshifted line λ. The star’s light will be blue-shifted if the star approaches earth. (Note in the case of an expanding nebula like the Crab Nebula, we assume it expands equally in all directions (i.e. spherically) and set VR= VT and can solve for the distance R to the ...
The origin, life, and death of stars
... becoming a planetary nebula (which actually has nothing to do with planets, but we didn’t know that in the 18th century when Herschel coined the term) The core collapses to form a White Dwarf ...
... becoming a planetary nebula (which actually has nothing to do with planets, but we didn’t know that in the 18th century when Herschel coined the term) The core collapses to form a White Dwarf ...
ASTR 105 Intro Astronomy: The Solar System
... ASTR 105 Intro Astronomy: The Solar System Graded clicker questions starting today ...
... ASTR 105 Intro Astronomy: The Solar System Graded clicker questions starting today ...
Starlight & Stars - Wayne State University Physics and Astronomy
... Consequently, distance is the among the most difficult quantities to measure in astronomy 27 July 2005 ...
... Consequently, distance is the among the most difficult quantities to measure in astronomy 27 July 2005 ...
Lec6
... those that have finished fusing H to He in their cores are no longer on the main sequence • All stars become larger and redder after exhausting their core hydrogen: giants and ...
... those that have finished fusing H to He in their cores are no longer on the main sequence • All stars become larger and redder after exhausting their core hydrogen: giants and ...
Document
... • A is incorrect because kilometers are too small to use to measure the size of many stars and would result in numbers that are cumbersome to use. • B is incorrect because light-years are used to measure distances in the universe and would be too large to use as a measure of the size of stars. • C i ...
... • A is incorrect because kilometers are too small to use to measure the size of many stars and would result in numbers that are cumbersome to use. • B is incorrect because light-years are used to measure distances in the universe and would be too large to use as a measure of the size of stars. • C i ...
STAR UNIT FLASH BACKS
... behavior. Despite what most people may think, mice are actually very clean animals that organize their habitat into areas for eating, sleeping, bathroom needs, etc. ...
... behavior. Despite what most people may think, mice are actually very clean animals that organize their habitat into areas for eating, sleeping, bathroom needs, etc. ...
Candles in the Dark
... again. Some vary irregularly but many follow regular patterns, flickering in seconds or pulsing over years to a steady beat. Why this happens can be explained by the physics going on inside the star, but the details aren’t important here. There is a type of giant yellow variable star called a Cephei ...
... again. Some vary irregularly but many follow regular patterns, flickering in seconds or pulsing over years to a steady beat. Why this happens can be explained by the physics going on inside the star, but the details aren’t important here. There is a type of giant yellow variable star called a Cephei ...
Life Cycle of a Star notes
... As the protostar continues to collapse due to gravity, it will attract more atoms and continually increase in mass and density. The increased density and gravity will cause the core temperature to eventually ...
... As the protostar continues to collapse due to gravity, it will attract more atoms and continually increase in mass and density. The increased density and gravity will cause the core temperature to eventually ...
File
... this is why they appear red to our eyes. This color is also seen in red giant stars which are larger in size and they are still colder. Station 3: Blue (Sirius & Vega) ...
... this is why they appear red to our eyes. This color is also seen in red giant stars which are larger in size and they are still colder. Station 3: Blue (Sirius & Vega) ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.