Life Cycle Of A Star
... that produces heat and light. There are many stars in our galaxy, and many more in others, but the star that is the most important and the one that we orbit around is called the Sun. The Sun produces heat and light for us and is also keeping all the planets in orbit. Stars aren’t just beautiful thin ...
... that produces heat and light. There are many stars in our galaxy, and many more in others, but the star that is the most important and the one that we orbit around is called the Sun. The Sun produces heat and light for us and is also keeping all the planets in orbit. Stars aren’t just beautiful thin ...
here - Lund Observatory
... year. One has measured a radial velocity of 1300 km/s for the nebular gas in relation to the central pulsar. We assume a symmetrical expansion. a. How far away is the crab nebula? b. How long ago did the supernova occur according to these measurements? c. How bright was it then, if a supernova of th ...
... year. One has measured a radial velocity of 1300 km/s for the nebular gas in relation to the central pulsar. We assume a symmetrical expansion. a. How far away is the crab nebula? b. How long ago did the supernova occur according to these measurements? c. How bright was it then, if a supernova of th ...
final review sheet
... 1) A star which appears blue is hotter than a red star because of the Doppler shift. 2) For two stars in a binary orbit, the center of mass will be closer to the more massive one. 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a fa ...
... 1) A star which appears blue is hotter than a red star because of the Doppler shift. 2) For two stars in a binary orbit, the center of mass will be closer to the more massive one. 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a fa ...
Which property of a star would not change if we could observe it
... • It works the same with stars! • If we know the total energy output of a star (luminosity), and we can count the number of photons we receive from that star (brightness), we can calculate its distance ...
... • It works the same with stars! • If we know the total energy output of a star (luminosity), and we can count the number of photons we receive from that star (brightness), we can calculate its distance ...
Unit 6--Astronomy
... b. blue d. orange 3.Gamma rays, X-rays, visible light, and radio waves are all types of ____. a. nuclear energy c. ultraviolet radiation b. chromatic aberration d. electromagnetic radiation 4.Which of the following refers to the change in wavelength that occurs when an object moves toward or away fr ...
... b. blue d. orange 3.Gamma rays, X-rays, visible light, and radio waves are all types of ____. a. nuclear energy c. ultraviolet radiation b. chromatic aberration d. electromagnetic radiation 4.Which of the following refers to the change in wavelength that occurs when an object moves toward or away fr ...
Set 1
... estimate the maximum time the region can be observed. What is the optimum time of year to make the observations? 2. The declination of a star is 42 57’ N and its proper motion components are: = -0.”0374, = 1”.21. Calculate its total proper motion. If the spectrum reveals a blueshift of 7.6 km ...
... estimate the maximum time the region can be observed. What is the optimum time of year to make the observations? 2. The declination of a star is 42 57’ N and its proper motion components are: = -0.”0374, = 1”.21. Calculate its total proper motion. If the spectrum reveals a blueshift of 7.6 km ...
The Night Sky September 2016 - Bridgend Astronomical Society
... Taurids shower which has a broad peak of around 10 days but normally gives relatively few meteors per hour. The peak is around the 10th of November and, pleasingly, the Moon is first quarter on the 7th so, in the first week of November will have set by midnight. The meteors arise from comet 2P/Encke ...
... Taurids shower which has a broad peak of around 10 days but normally gives relatively few meteors per hour. The peak is around the 10th of November and, pleasingly, the Moon is first quarter on the 7th so, in the first week of November will have set by midnight. The meteors arise from comet 2P/Encke ...
After Dark M S
... both are supernovas, the natures of these two exploding stars are very different. The supernova in M51 may mark the death of a massive star. The supernova in M101 may mark the death of a white dwarf star in a binary star system. The discovery and origins of these two exploding stars, more than 20 mi ...
... both are supernovas, the natures of these two exploding stars are very different. The supernova in M51 may mark the death of a massive star. The supernova in M101 may mark the death of a white dwarf star in a binary star system. The discovery and origins of these two exploding stars, more than 20 mi ...
Binary Orbits
... • In some cases possible to map the motion in the sky and determine important parameters like the mass e.g. α Centauri ...
... • In some cases possible to map the motion in the sky and determine important parameters like the mass e.g. α Centauri ...
Active Galactic Nuclei - University of Toronto
... • Radio output not seen in the visible spectrum – When viewed in the radio spectrum, can see one or two jets emerging ...
... • Radio output not seen in the visible spectrum – When viewed in the radio spectrum, can see one or two jets emerging ...
Way Milky the MAPPING
... In their work, Quillen and her colleagues focused on the forces acting on the stars in or near the bulge. As the stars go through their orbits, they also move above and below the plane of the bar. And like a child on a swing, each time a star crosses the plane of the bar at what’s known as the reson ...
... In their work, Quillen and her colleagues focused on the forces acting on the stars in or near the bulge. As the stars go through their orbits, they also move above and below the plane of the bar. And like a child on a swing, each time a star crosses the plane of the bar at what’s known as the reson ...
Unit 1: The Big Picture
... – Thought Milky Way made up entire universe until 1920s – Small fuzzy patches in telescopes appeared as nebulae, Latin for clouds – Edwin Hubble measured approximate distance to nearby Andromeda…no way Milky Way was that large – 3 Types: spiral, elliptical, irregular ...
... – Thought Milky Way made up entire universe until 1920s – Small fuzzy patches in telescopes appeared as nebulae, Latin for clouds – Edwin Hubble measured approximate distance to nearby Andromeda…no way Milky Way was that large – 3 Types: spiral, elliptical, irregular ...
Study Guide for Stars and Galaxies Quiz ANSWER KEY
... 2. List the three types of galaxies, and give properties of each. Be able to sketch each. a. elliptical contains old stars and little gas/dust b. irregular contains young stars and a lot of gas/dust c. spiral contains young stars and a lot of gas/dust 3. What is the name of the galaxy that ...
... 2. List the three types of galaxies, and give properties of each. Be able to sketch each. a. elliptical contains old stars and little gas/dust b. irregular contains young stars and a lot of gas/dust c. spiral contains young stars and a lot of gas/dust 3. What is the name of the galaxy that ...
The Birth of Stars
... before our Sun was born? 5. Why do some giant stars pulsate in and out? 6. Why do stars in some binary systems evolve in ...
... before our Sun was born? 5. Why do some giant stars pulsate in and out? 6. Why do stars in some binary systems evolve in ...
The Birth of Stars Guiding Questions • Because stars shine by
... The cluster’s age can be estimated by the age of the main-sequence stars at the turnoff point (the upper end of the remaining main sequence) ...
... The cluster’s age can be estimated by the age of the main-sequence stars at the turnoff point (the upper end of the remaining main sequence) ...
distance to the centre of the Milky Way.
... way out from the very centre of a huge stellar system, now known to be about 100,000 light years in diameter. Note that Shapley actually overestimated the distances somewhat, because he didn’t fully understand the effects of the obscuring dust. But this changed understanding was still absolutely cor ...
... way out from the very centre of a huge stellar system, now known to be about 100,000 light years in diameter. Note that Shapley actually overestimated the distances somewhat, because he didn’t fully understand the effects of the obscuring dust. But this changed understanding was still absolutely cor ...
Physics 1025: Lecture 18 Stellar Magnitudes, Absolute Magnitudes
... brighter? Thirdly, the eye cannot integrate add up light – it either sees a dim object or not; it is an instantaneous detector. Eye estimates of brightness are called visual magnitudes, mv It is better to use photographs which can have long exposures and thus integrate up the light; these are typica ...
... brighter? Thirdly, the eye cannot integrate add up light – it either sees a dim object or not; it is an instantaneous detector. Eye estimates of brightness are called visual magnitudes, mv It is better to use photographs which can have long exposures and thus integrate up the light; these are typica ...
cosmological horizon
... a wavelength of 393.3 nm when measured in the laboratory. In the giant elliptical galaxy NGC4889, this line is observed to be at 401.8 nm. what is the redshift of this galaxy? what is its recession velocity? how far away is it? ...
... a wavelength of 393.3 nm when measured in the laboratory. In the giant elliptical galaxy NGC4889, this line is observed to be at 401.8 nm. what is the redshift of this galaxy? what is its recession velocity? how far away is it? ...
Telescopes (continued). Properties of Stars.
... The surface temperature also determines the line spectrum of a star. Hot stars display lines of highly ionized elements, while cool stars show molecular lines. Stars are classified by assigning a spectral type. The hottest stars are called spectral type O, followed by B, A, F, G, K, M as the surface ...
... The surface temperature also determines the line spectrum of a star. Hot stars display lines of highly ionized elements, while cool stars show molecular lines. Stars are classified by assigning a spectral type. The hottest stars are called spectral type O, followed by B, A, F, G, K, M as the surface ...
Colonization of the Milky Way The distances between the stars are
... they have can be described by the equation N = 2t/100,000 ...
... they have can be described by the equation N = 2t/100,000 ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.