How Stars and Planets are Born
... • How does rotation and revolution happen? • Everything is in motion • Random directions of motion get averaged out ...
... • How does rotation and revolution happen? • Everything is in motion • Random directions of motion get averaged out ...
Five Women at the Crossroads of Astronomy - Physics
... numbers, so I handle all the necessary reductions and calculations. I also plan every night's observation schedule, for he says my intuition helps me turn the telescope to discover star cluster after star cluster. ...
... numbers, so I handle all the necessary reductions and calculations. I also plan every night's observation schedule, for he says my intuition helps me turn the telescope to discover star cluster after star cluster. ...
The Family of Stars
... more luminous than star A, so star B must be further away. The flux received from both stars is the same, but star B is 100 times more luminous than star A, so star B must be further away. Both stars are equally luminous, but the flux received from star A is 5 times less than from star B, so star A ...
... more luminous than star A, so star B must be further away. The flux received from both stars is the same, but star B is 100 times more luminous than star A, so star B must be further away. Both stars are equally luminous, but the flux received from star A is 5 times less than from star B, so star A ...
Stellar evolution, II
... Consider a cloud of cold (50 deg K) atomic hydrogen gas. If an electron of one atom flips its spin state and the electron then has a slightly lower energy state, the photon that is emitted is a. An ultraviolet photon of wavelength 1216 Angstroms b. An optical photon of wavelength 6563 Angstroms c. ...
... Consider a cloud of cold (50 deg K) atomic hydrogen gas. If an electron of one atom flips its spin state and the electron then has a slightly lower energy state, the photon that is emitted is a. An ultraviolet photon of wavelength 1216 Angstroms b. An optical photon of wavelength 6563 Angstroms c. ...
www.aavso.org
... The most popularly accepted model for this companion object is a binary star system surrounded by a massive, opaque disk of dust ...
... The most popularly accepted model for this companion object is a binary star system surrounded by a massive, opaque disk of dust ...
Astronomy Power Point
... • Detects radio waves given off by objects in space • Most have curved reflecting surfaces that are several hundred meters in diameter • The bigger the radio telescope, the more radio waves it can collect ...
... • Detects radio waves given off by objects in space • Most have curved reflecting surfaces that are several hundred meters in diameter • The bigger the radio telescope, the more radio waves it can collect ...
Characteristics of Stars
... 23.When it runs out of the fuel, the core will contract and the outer layers of the star will expand to form a _red giant 24. The outer layers of the star will peel away forming a -planetary nebula . Examples of other stars that have already met this fate are _the Hourglass nebula_., _the cars eye n ...
... 23.When it runs out of the fuel, the core will contract and the outer layers of the star will expand to form a _red giant 24. The outer layers of the star will peel away forming a -planetary nebula . Examples of other stars that have already met this fate are _the Hourglass nebula_., _the cars eye n ...
Skywatch Astro Ed Dec13
... of other stars, then hurled into space as the stars died, where they could be incorporated into new stars. Population II stars formed when there were almost no heavier elements around, so they have only tiny amounts of them. But Population I stars, like the Sun, are younger, so they have higher prop ...
... of other stars, then hurled into space as the stars died, where they could be incorporated into new stars. Population II stars formed when there were almost no heavier elements around, so they have only tiny amounts of them. But Population I stars, like the Sun, are younger, so they have higher prop ...
2017 MIT Invitational
... (d) Radially pulsating variable stars with periods of 100-700 days (e) Pulsating white dwarfs with periods of 100-1000 seconds (f) Pulsating source of radio emissions caused by neutron star variability (g) Classical nova that takes a few weeks to dim by two magnitudes from maximum (h) Class of Type ...
... (d) Radially pulsating variable stars with periods of 100-700 days (e) Pulsating white dwarfs with periods of 100-1000 seconds (f) Pulsating source of radio emissions caused by neutron star variability (g) Classical nova that takes a few weeks to dim by two magnitudes from maximum (h) Class of Type ...
Lecture 6
... Brightness is a function of the inverse square of distance, so if distance was cut by half it would get brighter by 4x=1/(.5)2 ...
... Brightness is a function of the inverse square of distance, so if distance was cut by half it would get brighter by 4x=1/(.5)2 ...
File
... crust, about a kilometer thick. This crust is very hard and very smooth. Gravity would probably prevent any irregularities larger than half a centimeter. ...
... crust, about a kilometer thick. This crust is very hard and very smooth. Gravity would probably prevent any irregularities larger than half a centimeter. ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.