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1.) Question
2.) Hypothesis
3.)Prediction
4.)Test
5.)Result |
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1.)gamma rays
2.)x-rays
3.)ultraviolet
4.)visible light
5.)infrared (visible)
6.) radio |
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| is energy playing on the stage of spacetime |
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| The point in the sky directly over the north magnetic pole, 90 degrees N declination, A point on the sky defined by the Earth's rotation axis |
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| A form of sound, Electromagnetic radiation, Energy |
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| Recognizable star pattern that is not a constellation |
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| speed of LIght, 3X10^8 m/s |
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light emitted at all wavelengths
-opaque gas |
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-Massive Star forming region
-Hot young stars
-10^4 stars
-5000 LY
- |
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| clouds of dust which are reflecting the light of a nearby star |
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| ionization (emission) nebulae |
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| is a cloud of ionized gas emitting light of various colors |
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-power radiated energy per time
measurement of brightness
-watts |
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-inverse square law
-mag
-Amount of light that reaches Earth
-Energy received per area |
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5th brightest star (mag. 0.0)
Distance 25LY |
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an astronomical object that has a known luminosity
-used to find a distance |
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-irregular dwarf galaxies in southern hemisphere
-Large
-Small
-in our local group |
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Definition
-quality lenses
-glass not 100 percent
-focus depends on color |
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-mirrors
-easier to make
-most astronomical telescopes are reflectors |
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On meridian
-Altitude:Dec
-Find RA by Transit timing |
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Angular distance/Time
*Arcsec/year |
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Shows the line of sight in motion
-redshift: further away
-blueshift: closer to you (faster frequency) |
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pulsating variable
mag 3.5-4.3
F-G stars
Period: 7.2 days
2.3 Mass of solar |
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| show unique path of object through spacetime |
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-has 4 dimensions
-mass warps spacetime
-gravity= warping of spacetime |
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Clock falls by gravity:
-clock accelerates away from observer
-light's path longer in well
-signals take longer to arrive
-TIME SLOWER |
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| Mass in Zero Volume, quantities that are used to measure the gravitational field become infinite in a way that does not depend on the coordinate system |
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| Plane of Earth's Orbit=Plane of Sun's path |
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| is an interstellar cloud of dust, hydrogen gas, helium gas and other ionized gases. |
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| is the structure resulting from the gigantic explosion of a star in a supernova. The supernova remnant is bounded by an expanding shock wave, and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way. |
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remnants of massive star greater than 8 solar masses
-Neutrons faster when forced into lowest energy state
*more mass radius shrinks
protons + electrons merge into neutrons
-packed to physical limit
-resists gravity
Neutron star limit 3 Solar masses |
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Super intense
-gravity
-magnetic fields
-synchrontron continuous spectrum
-pulsar wind nebula |
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-Procyon B: White Dwarf
-Sirius B: orbital period 50 yrs.
Electrons faster when forced into lowest energy states
-as White dwarf mass increases, electron speed moves to the speed of light
-Cannot merge protons + Electrons
-found by Subrahmanyan Chandrasekhar |
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-doubleshell burning ends with ejection of a planetary nebula
-remaining core becomes a white dwarf |
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-ionization nebula:photo-ionized by central star
-matter ejected by dying star
-NOTHING TO DO WITH PLANETS |
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Nearest Red Supergiant
~600 LY |
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Ionization nebula
-Nearest Massive star forming region
3000+ stars |
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N H fusion: Not stars
Emit Infrared from remaining heat of contraction: from gravity potential energy, Luminosity decreases as cools |
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Period= 34 years
Seperation 16AU
Distance 61 LY |
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| A visual binary star is a binary star for which the angular separation between the two components is great enough to permit them to be observed as a double star in a telescope, or even high-powered binoculars. |
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-doppler effect
*red shift
*blue shift |
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