astronomy - Scioly.org
... 46. How much brighter is a -2 magnitude star than a +2 magnitude star? 47. RR Lyrae variable stars are typically _________ giant stars? (fill in the blank with a color) 48. Variable stars are stars in which the _______ changes over time. A. Size B. Color C. Shape D. brightness 49. A planet orbits th ...
... 46. How much brighter is a -2 magnitude star than a +2 magnitude star? 47. RR Lyrae variable stars are typically _________ giant stars? (fill in the blank with a color) 48. Variable stars are stars in which the _______ changes over time. A. Size B. Color C. Shape D. brightness 49. A planet orbits th ...
THE LIFE CYCLE OF A STAR
... nebula. Dark Nebula also exists. These are dense clouds of molecular hydrogen which partially or completely absorb the light from stars behind them e.g. the Horsehead Nebula in Orion. Planetary Nebula are the outer layers of a star that are lost when the star changes from a red giant to a white dwar ...
... nebula. Dark Nebula also exists. These are dense clouds of molecular hydrogen which partially or completely absorb the light from stars behind them e.g. the Horsehead Nebula in Orion. Planetary Nebula are the outer layers of a star that are lost when the star changes from a red giant to a white dwar ...
Astronomical distance
... the next photograph. This was taken by the Hubble Space Telescope and shows a group of the most distance galaxies so far discovered. It contains over 10 000 galaxies in the constellation Fornax (below Orion) some of them over 12 000 million light years away! It is amazing to realise that the light t ...
... the next photograph. This was taken by the Hubble Space Telescope and shows a group of the most distance galaxies so far discovered. It contains over 10 000 galaxies in the constellation Fornax (below Orion) some of them over 12 000 million light years away! It is amazing to realise that the light t ...
Stellar Evolution Test Answers
... 5. . Einstein’s general theory of relativity describes gravity in terms of the warping of space-time by the presence of a) mass b) a pulsar c) a black hole d) a neutron star 6. The boundary at which escape speed from a collapsing star equals the speed of light is called the a) photon sphere b) Schwa ...
... 5. . Einstein’s general theory of relativity describes gravity in terms of the warping of space-time by the presence of a) mass b) a pulsar c) a black hole d) a neutron star 6. The boundary at which escape speed from a collapsing star equals the speed of light is called the a) photon sphere b) Schwa ...
A105 Stars and Galaxies
... The bright, point-like source at the center of the image was produced by a huge X-ray flare in the vicinity of the supermassive black hole. ...
... The bright, point-like source at the center of the image was produced by a huge X-ray flare in the vicinity of the supermassive black hole. ...
Night Sky Checklist April–May–June Unaided Eye Astronomy
... Corvus, the Crow, is a challenging lozenge-shaped constellation not far from Spica, the brightest star in Virgo. Crater, the Cup, represents the goblet of Apollo in Greek mythology. It has been accepted as a constellation for at least 18 centuries! It’s faint, but with some imagination it really do ...
... Corvus, the Crow, is a challenging lozenge-shaped constellation not far from Spica, the brightest star in Virgo. Crater, the Cup, represents the goblet of Apollo in Greek mythology. It has been accepted as a constellation for at least 18 centuries! It’s faint, but with some imagination it really do ...
Evolution of Close Binary Systems
... Galaxy, but for the vast majority, the separation of the stars is large enough that one star doesn’t affect the evolution of the other(s). ...
... Galaxy, but for the vast majority, the separation of the stars is large enough that one star doesn’t affect the evolution of the other(s). ...
Finding Constellations From Orion
... Drawing a line from Bellatrix (bell-LAY-triks) through Betelgeuse points us to Procyon (PRO-sy-on), the 8th brightest star in the sky and part of Canis Minor, the Small Dog. The two dogs are Orion’s hunting companions. Betelgeuse, Sirius, and Procyon make up the Winter Triangle. Hanging down from Or ...
... Drawing a line from Bellatrix (bell-LAY-triks) through Betelgeuse points us to Procyon (PRO-sy-on), the 8th brightest star in the sky and part of Canis Minor, the Small Dog. The two dogs are Orion’s hunting companions. Betelgeuse, Sirius, and Procyon make up the Winter Triangle. Hanging down from Or ...
Interstellar clouds
... Luminosity of a Star • Luminosity is determined by the amount of fuel that it is burning. • Our sun fuses 4 billion kilograms of hydrogen per second. • In some 5 billion years from now the sun’s life will come to an end. • The more massive a star the shorter its life time, since increasing the mass ...
... Luminosity of a Star • Luminosity is determined by the amount of fuel that it is burning. • Our sun fuses 4 billion kilograms of hydrogen per second. • In some 5 billion years from now the sun’s life will come to an end. • The more massive a star the shorter its life time, since increasing the mass ...
STARS AND CONSTELLATIONS
... including a fight with Leo, the lion, a summer constellation. - Leo, the lion, also known as the backward question mark and the sickle. a. Represents the Lion of Judah b. Represents the Lion slain by Hercules c. Regulus, a blue-white star of first magnitude is in the handle of the sickle and is 86 l ...
... including a fight with Leo, the lion, a summer constellation. - Leo, the lion, also known as the backward question mark and the sickle. a. Represents the Lion of Judah b. Represents the Lion slain by Hercules c. Regulus, a blue-white star of first magnitude is in the handle of the sickle and is 86 l ...
Stars - Haag
... The brightness of stars from earth is known as its apparent magnitude. This depends on size and energy output ...
... The brightness of stars from earth is known as its apparent magnitude. This depends on size and energy output ...
The winter sky over Bosham
... mostly random groupings of stars that happen to appear together in the sky, the stars of Orion are almost all related, outlining one of the closest star-forming regions to Earth. The constellation contains two of the brightest stars in the sky, with Betelgeuse marking the top left ‘shoulder’ and Rig ...
... mostly random groupings of stars that happen to appear together in the sky, the stars of Orion are almost all related, outlining one of the closest star-forming regions to Earth. The constellation contains two of the brightest stars in the sky, with Betelgeuse marking the top left ‘shoulder’ and Rig ...
Unit 1
... As starlight passes through a dust cloud, the dust particles scatter blue photons, allowing red photons to pass through easily The star appears red (reddening) – it looks older and dimmer (extinction) than it really is. ...
... As starlight passes through a dust cloud, the dust particles scatter blue photons, allowing red photons to pass through easily The star appears red (reddening) – it looks older and dimmer (extinction) than it really is. ...
powerpoint version
... they were coming from a common source. In between was a T Tauri star, buried in the ISM, visible only in the infrared. PHYS1142 ...
... they were coming from a common source. In between was a T Tauri star, buried in the ISM, visible only in the infrared. PHYS1142 ...
The HR Diagram
... • Where are stars most of their lives? • Where are they when they begin to die? • What are they after they use up their ...
... • Where are stars most of their lives? • Where are they when they begin to die? • What are they after they use up their ...
Stars
... • A star is a ball of plasma held together by its own gravity – Nuclear reactions occur in stars - ...
... • A star is a ball of plasma held together by its own gravity – Nuclear reactions occur in stars - ...
Chapter 21
... 3,700 LY wide dust-disk encircling a 300 million solar mass blackhole in the center of an elliptical galaxy. The disk is a remnant of an ancient galaxy collision and could be “swallowed” up by the blackhole in a few billion years. ...
... 3,700 LY wide dust-disk encircling a 300 million solar mass blackhole in the center of an elliptical galaxy. The disk is a remnant of an ancient galaxy collision and could be “swallowed” up by the blackhole in a few billion years. ...
globular cluster - Harding University
... result, we now know that objects are actually about 10% farther away than we previously had thought, i.e., the universe is about 10% larger than we thought. ...
... result, we now know that objects are actually about 10% farther away than we previously had thought, i.e., the universe is about 10% larger than we thought. ...
neutron star - Livonia Public Schools
... All stars, regardless of their size, eventually run out of fuel and collapse due to gravity. Death of Low-Mass Stars • Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydrogen fuel and coll ...
... All stars, regardless of their size, eventually run out of fuel and collapse due to gravity. Death of Low-Mass Stars • Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydrogen fuel and coll ...
life cycle of stars notes
... 2. Supermassive stars – the core of the star collapses into a black hole, a dead star so dense and massive that nothing can escape its gravity, not even light. ...
... 2. Supermassive stars – the core of the star collapses into a black hole, a dead star so dense and massive that nothing can escape its gravity, not even light. ...
The Life Cycle of Stars
... Realize that once our Sun starts to run out of hydrogen fuel and has exhausted its ability to fuse other elements like carbon and oxygen, it will become a red giant and expand in size to envelope the Earth. And surprisingly, the larger the mass of the star, the quicker it burns its fuel sources and ...
... Realize that once our Sun starts to run out of hydrogen fuel and has exhausted its ability to fuse other elements like carbon and oxygen, it will become a red giant and expand in size to envelope the Earth. And surprisingly, the larger the mass of the star, the quicker it burns its fuel sources and ...
Problem 4: magnitude of the star?
... __C___13. A star forms on the main sequence with twice the mass of our sun. It’s lifetime on the main sequence, relative to that for a solar mass star, is A. The same B. Half as long C. 1/4 as long D. 1/9 as long E. 1/16 as long __D___14. The evolutionary path of a star takes it horizontally and to ...
... __C___13. A star forms on the main sequence with twice the mass of our sun. It’s lifetime on the main sequence, relative to that for a solar mass star, is A. The same B. Half as long C. 1/4 as long D. 1/9 as long E. 1/16 as long __D___14. The evolutionary path of a star takes it horizontally and to ...
Society News - Bristol Astronomical Society
... These stars have a peculiar chemical makeup with the atmosphere containing higher than average levels of silicon, mercury and europium the stars also have extremely strong magnetic fields, about 5,000 times as strong as the Earth's. These magnetic fields are thought to produce massive starspots whic ...
... These stars have a peculiar chemical makeup with the atmosphere containing higher than average levels of silicon, mercury and europium the stars also have extremely strong magnetic fields, about 5,000 times as strong as the Earth's. These magnetic fields are thought to produce massive starspots whic ...
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.