Project Packet - Montville.net
... 1. Time of year when it is visible 2. What direction you should look and at what time 3. How high above the horizon you should look. Part 2 1. What does your constellation look like? 2. Draw a diagram or include an image in the space on the results pages. Part 3 Look up what stars are in your conste ...
... 1. Time of year when it is visible 2. What direction you should look and at what time 3. How high above the horizon you should look. Part 2 1. What does your constellation look like? 2. Draw a diagram or include an image in the space on the results pages. Part 3 Look up what stars are in your conste ...
PROBLEM SET #9 SOLUTIONS AST142 1. Quasar luminosity
... A quasar has an average luminosity of 3 × 1013 L , and an X-ray brightness that can vary substantially in as little as three hours. Assume that the quasar’s black-hole engine is accreting at the Eddington rate, and show that these two findings are consistent with one another. ...
... A quasar has an average luminosity of 3 × 1013 L , and an X-ray brightness that can vary substantially in as little as three hours. Assume that the quasar’s black-hole engine is accreting at the Eddington rate, and show that these two findings are consistent with one another. ...
Astronomy
... c. They are 88 groups of stars and stars in each constellation are about the same distance from earth d. They are 88 well defined sky regions along the ecliptic. ...
... c. They are 88 groups of stars and stars in each constellation are about the same distance from earth d. They are 88 well defined sky regions along the ecliptic. ...
Stars
... discussed in searching for extra-solar planets. Doppler shift measurements are usually done on spectral lines. • Essentially all of the mass measurements that we have for stars are for stars in binary systems – two stars orbiting each other. • The mass of the stars can be measured from their velocit ...
... discussed in searching for extra-solar planets. Doppler shift measurements are usually done on spectral lines. • Essentially all of the mass measurements that we have for stars are for stars in binary systems – two stars orbiting each other. • The mass of the stars can be measured from their velocit ...
Crux The Southern Cross
... There are many stars in the sky that when viewed through a telescope appear as two dots. It is common for two stars to be locked together gravitationally to form a binary star system. Sometimes double stars may only appear close together from our vantage point on earth. If in reality they do not int ...
... There are many stars in the sky that when viewed through a telescope appear as two dots. It is common for two stars to be locked together gravitationally to form a binary star system. Sometimes double stars may only appear close together from our vantage point on earth. If in reality they do not int ...
The amazing lives of two stars
... PHASE I: A vast compression wave moves through a galaxy. Spiral shaped, the wave slowly ripples through the galactic disk, and a cosmic traffic jam ensues. As gas encounters this invincible wall of compression, it gets squeezed, forming huge clouds, dark and formidable. Some contain as much matter a ...
... PHASE I: A vast compression wave moves through a galaxy. Spiral shaped, the wave slowly ripples through the galactic disk, and a cosmic traffic jam ensues. As gas encounters this invincible wall of compression, it gets squeezed, forming huge clouds, dark and formidable. Some contain as much matter a ...
presentation source
... than an entire galaxy such as M31 could be so far away....… This implied that Cyg A was an extraordinary object. Astronomers began to examine other 3C objects ...
... than an entire galaxy such as M31 could be so far away....… This implied that Cyg A was an extraordinary object. Astronomers began to examine other 3C objects ...
View poster
... The solution is to start considering the Moon. Therefore the dynamic range of the star sensor had to include the brighter stars in our galaxy and the very bright Moon. Ranges from magnitudes 1 to -13 need to be covered. In the lab we have shown that the dynamic range of the star sensor can include t ...
... The solution is to start considering the Moon. Therefore the dynamic range of the star sensor had to include the brighter stars in our galaxy and the very bright Moon. Ranges from magnitudes 1 to -13 need to be covered. In the lab we have shown that the dynamic range of the star sensor can include t ...
constellations - Otterbein University
... - constellation shapes and names - star names and position in constellation - deep sky objects’ names and position • Quiz: You will be asked to find these objects on a star map. ...
... - constellation shapes and names - star names and position in constellation - deep sky objects’ names and position • Quiz: You will be asked to find these objects on a star map. ...
Night Sky Course Stars and Star Clusters within the
... called Cepheid Variables have a distinct Period-Luminousity curve that can be calibrated if we have measured their distance by another method, say stellar (or radio) parallax. Once we have calibrated the stars, we can extrapolate to distances beyond nearby clusters based on how brightly these Cephei ...
... called Cepheid Variables have a distinct Period-Luminousity curve that can be calibrated if we have measured their distance by another method, say stellar (or radio) parallax. Once we have calibrated the stars, we can extrapolate to distances beyond nearby clusters based on how brightly these Cephei ...
Stellar Lives (continued). Galaxies.
... In massive stars the core temperature can reach the critical 600 million K to ignite carbon. But carbon burns away in a few hundred years. Each successive stage of nuclear burning proceeds more rapidly than prior stages. Many different reactions may act at the same time. At the end of a massive star ...
... In massive stars the core temperature can reach the critical 600 million K to ignite carbon. But carbon burns away in a few hundred years. Each successive stage of nuclear burning proceeds more rapidly than prior stages. Many different reactions may act at the same time. At the end of a massive star ...
question - UW Canvas
... 13. What else can be inferred from the graph for each of the CMDs shown in Figure 4? a. The locations or coordinates on the celestial sphere where the clusters are located. b. How fast each cluster is moving relative to Earth; i.e., spectral redshifts or blueshifts. c. The value of Hubble’s constant ...
... 13. What else can be inferred from the graph for each of the CMDs shown in Figure 4? a. The locations or coordinates on the celestial sphere where the clusters are located. b. How fast each cluster is moving relative to Earth; i.e., spectral redshifts or blueshifts. c. The value of Hubble’s constant ...
Astrophysics notes
... A star can be analysed as a black body. By looking at the electromagnetic radiation emitted across the continuous spectrum, we can use the peak intensity wavelength (the wavelength at which the emitted radiation is at its highest peak) to determine the temperature of the star. We can use Wiens law ( ...
... A star can be analysed as a black body. By looking at the electromagnetic radiation emitted across the continuous spectrum, we can use the peak intensity wavelength (the wavelength at which the emitted radiation is at its highest peak) to determine the temperature of the star. We can use Wiens law ( ...
Instructor Notes
... What they found is that most stars fall in a narrow band called the “main sequence”, but that some stars were big but cool or small but hot. Why? ...
... What they found is that most stars fall in a narrow band called the “main sequence”, but that some stars were big but cool or small but hot. Why? ...
Masers and high mass star formation Claire Chandler
... – Massive SF: clouds are warmer, larger, more massive, mainly located in spiral arms; high mass stars form in clusters and associations – Low-mass SF: form in a cooler population of clouds throughout the Galactic disk, as well as GMCs, not necessarily in clusters ...
... – Massive SF: clouds are warmer, larger, more massive, mainly located in spiral arms; high mass stars form in clusters and associations – Low-mass SF: form in a cooler population of clouds throughout the Galactic disk, as well as GMCs, not necessarily in clusters ...
Nebula
... Milky Way (some examples of the older usage survive; for example, the Andromeda Galaxy was referred to as the Andromeda Nebula before galaxies were discovered by Edwin Hubble). ...
... Milky Way (some examples of the older usage survive; for example, the Andromeda Galaxy was referred to as the Andromeda Nebula before galaxies were discovered by Edwin Hubble). ...
Stages - A Summary - University of Dayton
... dwarfs) will be dim and cool and, as they grow older, will only grow dimmer and cooler, ultimately becoming black dwarfs (see STAGE 14). Astronomers have identified several brown dwarf candidates, and even have evidence for the presence of Jupiter-like planets in orbit around several nearby stars. R ...
... dwarfs) will be dim and cool and, as they grow older, will only grow dimmer and cooler, ultimately becoming black dwarfs (see STAGE 14). Astronomers have identified several brown dwarf candidates, and even have evidence for the presence of Jupiter-like planets in orbit around several nearby stars. R ...
CHAPTER 30: STARS, GALAXIES AND THE UNIVERSE Analyzing
... The forces balance each other and keep the star in equilibrium. As gravity increases the pressure on the matter within a star, the rate of fusion increases. This increase in fusion causes a rise in gas pressure. As a result, the energy from the increased fusion and gas pressure generates outward pr ...
... The forces balance each other and keep the star in equilibrium. As gravity increases the pressure on the matter within a star, the rate of fusion increases. This increase in fusion causes a rise in gas pressure. As a result, the energy from the increased fusion and gas pressure generates outward pr ...
here - ESA Science
... To achieve the precise and accurate measurements that will be needed the Gaia payload must remain mechanically and thermally ultra stable. This is achieved by using a special ceramic material to construct the payload and by shielding the payload with a large sunshield that will be unfolded after lau ...
... To achieve the precise and accurate measurements that will be needed the Gaia payload must remain mechanically and thermally ultra stable. This is achieved by using a special ceramic material to construct the payload and by shielding the payload with a large sunshield that will be unfolded after lau ...
Lecture 13 (pdf from the powerpoint)
... If we know that a group of stars are at the same distance we can plot the following two parameters in place of Luminosity and Temperature on the H-R diagram a) Period and luminosity b) Surface gravity and color c) Brightness and color d) Diameter and brightness e) None of the above ...
... If we know that a group of stars are at the same distance we can plot the following two parameters in place of Luminosity and Temperature on the H-R diagram a) Period and luminosity b) Surface gravity and color c) Brightness and color d) Diameter and brightness e) None of the above ...
Small galaxies are growing smaller
... have the spectacular appearance we see in “coffee table” books. Indeed, in the early days of extragalactic astronomy it was thought that most galaxies were of rather similar (large) luminosities. Specifically, Edwin Hubble (1936) and his contemporaries believed that the luminosity function (LF) of g ...
... have the spectacular appearance we see in “coffee table” books. Indeed, in the early days of extragalactic astronomy it was thought that most galaxies were of rather similar (large) luminosities. Specifically, Edwin Hubble (1936) and his contemporaries believed that the luminosity function (LF) of g ...
the rest of the univ..
... nearly 100 known trans-Neptunian objects (as of early 1999) see the MPC's list. Many orbit in 3:2 ...
... nearly 100 known trans-Neptunian objects (as of early 1999) see the MPC's list. Many orbit in 3:2 ...
A Universe of Galaxies - Pennsylvania State University
... What can outshine ~1000 supernovae for millions of years, and be just slightly larger than our Solar System? Theoretically, not much – only a very, very big black hole. • Start with a black hole with a mass of 10,000,000,000 Mʘ • Have a star come close enough to be tidally disrupted • Have the mater ...
... What can outshine ~1000 supernovae for millions of years, and be just slightly larger than our Solar System? Theoretically, not much – only a very, very big black hole. • Start with a black hole with a mass of 10,000,000,000 Mʘ • Have a star come close enough to be tidally disrupted • Have the mater ...
Stellar Evolution
... Evolution of Stars More Massive than the Sun Star of more than 8 solar masses can fuse elements far beyond carbon in its core Leads to a very different fate Path across the H-R diagram is essentially a straight line Stays at just about the same luminosity as it cools off Eventually the star dies in ...
... Evolution of Stars More Massive than the Sun Star of more than 8 solar masses can fuse elements far beyond carbon in its core Leads to a very different fate Path across the H-R diagram is essentially a straight line Stays at just about the same luminosity as it cools off Eventually the star dies in ...
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.