Planetary Nebula NGC 7027 Hubble Space Telescope
... NGC 7027 i s on e of the smallestobjects of its kind to be imaged by the Hubble telescope. However, the region seen h ere is approximately 14,000 times the average distance between Earth and the sun. THE INFRARED AND VISIBLE LIGHT VIEW – This visible and infrared light picture of NGC 7027 (on the ri ...
... NGC 7027 i s on e of the smallestobjects of its kind to be imaged by the Hubble telescope. However, the region seen h ere is approximately 14,000 times the average distance between Earth and the sun. THE INFRARED AND VISIBLE LIGHT VIEW – This visible and infrared light picture of NGC 7027 (on the ri ...
What is a star? A star is a giant ball of gases held together by gravity
... black hole is a massive star that has collapsed onto itself. It is very dense. Its gravity is so strong, not even light can escape. It is invisible. Scientists have evidence that a black hole is the center of the Milky Way Galaxy. Its mass has been estimated at over three million times the mass of o ...
... black hole is a massive star that has collapsed onto itself. It is very dense. Its gravity is so strong, not even light can escape. It is invisible. Scientists have evidence that a black hole is the center of the Milky Way Galaxy. Its mass has been estimated at over three million times the mass of o ...
Integrative Studies 410 Our Place in the Universe
... Supernovae – Death of massive Stars • As the core collapses, it overshoots and “bounces” • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
... Supernovae – Death of massive Stars • As the core collapses, it overshoots and “bounces” • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
mass of star
... (as Main Sequence Stars)? A star on Main Sequence has fusion of H to He in its core. How fast depends on mass of H available and rate of fusion. Mass of H in core depends on mass of star. Fusion rate is related to luminosity (fusion reactions make the radiation energy). ...
... (as Main Sequence Stars)? A star on Main Sequence has fusion of H to He in its core. How fast depends on mass of H available and rate of fusion. Mass of H in core depends on mass of star. Fusion rate is related to luminosity (fusion reactions make the radiation energy). ...
z - STScI
... over HST comparable to the advance of HST • NGST can observe – Acceleration/deceleration of expanding universe – Cosmic dark matter – First luminous objects after Big Bang, even if much ...
... over HST comparable to the advance of HST • NGST can observe – Acceleration/deceleration of expanding universe – Cosmic dark matter – First luminous objects after Big Bang, even if much ...
Teacher Guide - Astronomy Outreach at UT Austin
... Iana the interstellar cloud: stars begin their lives as collapsing globs of gas inside an interstellar cloud or nebula. Minerva the Red Giant: Minerva is in the next phase of life - a bloated red giant star. Her size could easily swallow up Mercury and Venus and almost Earth. ...
... Iana the interstellar cloud: stars begin their lives as collapsing globs of gas inside an interstellar cloud or nebula. Minerva the Red Giant: Minerva is in the next phase of life - a bloated red giant star. Her size could easily swallow up Mercury and Venus and almost Earth. ...
LAB: Star Classification
... stars known so far, with a temperature of 200,000º K at its surface. Stars of intermediate mass (1-8 solar masses) terminate their life as an Earth-sized white dwarf after the exhaustion of their nuclear fuel. During the transition from a nuclear-burning star to the white dwarf stage, the star becom ...
... stars known so far, with a temperature of 200,000º K at its surface. Stars of intermediate mass (1-8 solar masses) terminate their life as an Earth-sized white dwarf after the exhaustion of their nuclear fuel. During the transition from a nuclear-burning star to the white dwarf stage, the star becom ...
I CAN SEE THE STARS IN YOUR EYES
... at this speed, the trip from Earth to the sun, a distance of 93 million miles, would take about 8 minutes, not very long for such a long trip! Yet, to get to the next closest star, Proxima Centauri, would take 4.2 years. “Hmmm…,” you think to yourself, “that might be an interesting fact to include i ...
... at this speed, the trip from Earth to the sun, a distance of 93 million miles, would take about 8 minutes, not very long for such a long trip! Yet, to get to the next closest star, Proxima Centauri, would take 4.2 years. “Hmmm…,” you think to yourself, “that might be an interesting fact to include i ...
Astronomical Distance Determination • etc.
... determination is that there is a clear relation between the period of the brightness variation and the average luminosity of the star. Cepheid variables are also very bright and can be seen from far away. (They are not main sequence stars). A complication though is that there are two populations of ...
... determination is that there is a clear relation between the period of the brightness variation and the average luminosity of the star. Cepheid variables are also very bright and can be seen from far away. (They are not main sequence stars). A complication though is that there are two populations of ...
NASA`s Spitzer Images Out-of-This
... NASA/JPL-Caltech/R. Kennicutt (University of Arizona) and the SINGS Team ...
... NASA/JPL-Caltech/R. Kennicutt (University of Arizona) and the SINGS Team ...
An Introduction to Astronomy and Cosmology
... • BUT 5 magnitude steps = 100 in brightness • So Z = (100)1/5 = 2.512 ...
... • BUT 5 magnitude steps = 100 in brightness • So Z = (100)1/5 = 2.512 ...
Galaxies and the Universe
... Why are the arms of spiral galaxies typically blue in color? A. They are usually moving toward us and are Doppler Shifted to blue wavelengths. B. The gas and dust in the arms filter out all but the blue light from stars in the arms. C. Stars are forming in the spiral arms so there are high mass, ho ...
... Why are the arms of spiral galaxies typically blue in color? A. They are usually moving toward us and are Doppler Shifted to blue wavelengths. B. The gas and dust in the arms filter out all but the blue light from stars in the arms. C. Stars are forming in the spiral arms so there are high mass, ho ...
AAS Poster, NM 2002: "The Discovery of New
... IC10 is a Local Group dwarf irregular galaxy described by Hubble (1936) as ``one of the most curious objects in the sky". Massey and Armandoff (1995) proposed that it is currently undergoing a starburst: despite its small size, it contains 15 spectroscopically confirmed Wolf-Rayet stars, which is a ...
... IC10 is a Local Group dwarf irregular galaxy described by Hubble (1936) as ``one of the most curious objects in the sky". Massey and Armandoff (1995) proposed that it is currently undergoing a starburst: despite its small size, it contains 15 spectroscopically confirmed Wolf-Rayet stars, which is a ...
COMING EVENTS The Pluto Files Volume 37 Number 03 March
... Within each chapter the observing challenges are organized by observing season (winter, spring, summer, fall). Look for the season recommendation near at the top of the page near the binding. If you start your observing session early and you stay up late enough you’ll be able to observe objects from ...
... Within each chapter the observing challenges are organized by observing season (winter, spring, summer, fall). Look for the season recommendation near at the top of the page near the binding. If you start your observing session early and you stay up late enough you’ll be able to observe objects from ...
OSP2016Level 3 Map - Oregon Star Party
... What is it? V404 Cyg is a black hole (12+/- 3 solar masses) with late K or early G type stellar companion that’s slightly smaller than the Sun, orbiting each other in less than 6.5 days. They are approximately 7800 light years away. Why you want to see it: The stellar companion is distorted into a ...
... What is it? V404 Cyg is a black hole (12+/- 3 solar masses) with late K or early G type stellar companion that’s slightly smaller than the Sun, orbiting each other in less than 6.5 days. They are approximately 7800 light years away. Why you want to see it: The stellar companion is distorted into a ...
File
... determines how fast the cloud will form a disk before it is completely turned into stars Protogalactic cooling…the initial density determines how fast the cloud can form stars before it collapses ...
... determines how fast the cloud will form a disk before it is completely turned into stars Protogalactic cooling…the initial density determines how fast the cloud can form stars before it collapses ...
1. Stellar Evolution – Notes Astronomers classify stars according to
... On the H-R diagram, giant and supergiant stars lie above the main sequence, while white dwarfs are below the main sequence. Main-sequence stars are stars like the Sun but with different masses. The mass-luminosity relation expresses a direct correlation between mass and luminosity for main-sequence ...
... On the H-R diagram, giant and supergiant stars lie above the main sequence, while white dwarfs are below the main sequence. Main-sequence stars are stars like the Sun but with different masses. The mass-luminosity relation expresses a direct correlation between mass and luminosity for main-sequence ...
The Milky Way and other Galaxies
... M87 = Central, giant elliptical galaxy in the Virgo cluster of galaxies Optical and radio observations detect a jet with velocities up to ~ 1/2 c. ...
... M87 = Central, giant elliptical galaxy in the Virgo cluster of galaxies Optical and radio observations detect a jet with velocities up to ~ 1/2 c. ...
The most important questions to study for the exam
... • Our eyes are mounted horizontally about 10 cm apart in our heads, and the brain uses the relative look angles of these eyes to estimate distance to the object viewed. • We are always moving our heads slightly from side to side, and the brain compares look angles from each of these positions to obt ...
... • Our eyes are mounted horizontally about 10 cm apart in our heads, and the brain uses the relative look angles of these eyes to estimate distance to the object viewed. • We are always moving our heads slightly from side to side, and the brain compares look angles from each of these positions to obt ...
Introduction to Astronomy - Northumberland Astronomical Society
... Declination an angle measured north or south of the celestial equator. The North Celestial Pole is at +90◦ and the South Celestial Pole at −90◦ . Right Ascension an angle measured from a zero line (the First Point of Aries) to the object line. The RA of an object is usually expressed as the time per ...
... Declination an angle measured north or south of the celestial equator. The North Celestial Pole is at +90◦ and the South Celestial Pole at −90◦ . Right Ascension an angle measured from a zero line (the First Point of Aries) to the object line. The RA of an object is usually expressed as the time per ...
stars_2nd_edit
... Because of their small size these stars burn their fuel very slowly, which allows them to live a very long time. Some red dwarf stars will live trillions of years before they run out of fuel. ...
... Because of their small size these stars burn their fuel very slowly, which allows them to live a very long time. Some red dwarf stars will live trillions of years before they run out of fuel. ...
STELLAR EVOLUTION
... undergo repeated novae explosions, or disintegrate as a supernova. Almost all evolutionary processes in stars take much longer than a human lifetime; we cannot watch a star evolve from birth to death. A few exceptions are supernova and nova explosions, which happen in hours and days. ...
... undergo repeated novae explosions, or disintegrate as a supernova. Almost all evolutionary processes in stars take much longer than a human lifetime; we cannot watch a star evolve from birth to death. A few exceptions are supernova and nova explosions, which happen in hours and days. ...
Properties of Stars - Mr. Carter`s Earth
... The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of ...
... The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of ...
Neutron Stars - Otterbein University
... Supernovae – Death of massive Stars • As the core collapses, it overshoots and “bounces” • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
... Supernovae – Death of massive Stars • As the core collapses, it overshoots and “bounces” • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
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.