Question 1
... Question 1 The location of the Galactic center was identified early in the 20th century using a) supernova remnants. b) white dwarf stars in the spiral arms. c) red giant variable stars in globular clusters. d) bright O and B stars in open clusters. e) X-ray sources. Explanation: Harlow Shapley use ...
... Question 1 The location of the Galactic center was identified early in the 20th century using a) supernova remnants. b) white dwarf stars in the spiral arms. c) red giant variable stars in globular clusters. d) bright O and B stars in open clusters. e) X-ray sources. Explanation: Harlow Shapley use ...
No Slide Title
... White Dwarf Star.Radiation from this star is fluorescing the clouds of H,O and N thrown off in the final unstable stages of the star’s life. Slide which follows shows some detail. 7-11.Crab Nebula-In 1054 AD the chinese recorded a bright new star seen in daylight for quite a long time.It was a Super ...
... White Dwarf Star.Radiation from this star is fluorescing the clouds of H,O and N thrown off in the final unstable stages of the star’s life. Slide which follows shows some detail. 7-11.Crab Nebula-In 1054 AD the chinese recorded a bright new star seen in daylight for quite a long time.It was a Super ...
GEARS Workshop Monday - Georgia Southern University
... atop Mauna Kea at 14,000 ft above sea level, which will be used to look at distant galaxies? • Project Sigma: A visible wavelength telescope, place on a satellite in orbit around Earth, which will used to observe a pair of binary stars located in the ...
... atop Mauna Kea at 14,000 ft above sea level, which will be used to look at distant galaxies? • Project Sigma: A visible wavelength telescope, place on a satellite in orbit around Earth, which will used to observe a pair of binary stars located in the ...
Giant Molecular Clouds and Gravitational Stability
... Size on the sky of near GMCs = 5..20 x full moon Average temperature (in cold parts)= 20...30 K Typical density = 103...106 molec/cm3 Typical (estimated) life time = ~107 year Star formation efficiency ...
... Size on the sky of near GMCs = 5..20 x full moon Average temperature (in cold parts)= 20...30 K Typical density = 103...106 molec/cm3 Typical (estimated) life time = ~107 year Star formation efficiency ...
Star Formation
... • Molecular clouds are relatively dense and are very cold, often only 10 K. • Giant molecular clouds can contain as much as 104 solar masses (M) of gas and be 10 light years across. • Molecular clouds are the primary sites for star formation. ...
... • Molecular clouds are relatively dense and are very cold, often only 10 K. • Giant molecular clouds can contain as much as 104 solar masses (M) of gas and be 10 light years across. • Molecular clouds are the primary sites for star formation. ...
Hubble Offers a Dazzling View of Necklace Nebula
... the nebula in November 2005 with the Isaac Newton Telescope during a survey of planetary nebulas. ...
... the nebula in November 2005 with the Isaac Newton Telescope during a survey of planetary nebulas. ...
The Star of Bethlehem: a Type Ia/Ic Supernova in the Andromeda
... his public ministry when he was “about thirty years of age”, which would mean that he was between 25 and 35. His public ministry lasted between one and three years. A birth date of 22 March 8 B.C. would mean he was 34 years old in 27 A.D., consistent with a three–year ministry, ending in 30 A.D. The ...
... his public ministry when he was “about thirty years of age”, which would mean that he was between 25 and 35. His public ministry lasted between one and three years. A birth date of 22 March 8 B.C. would mean he was 34 years old in 27 A.D., consistent with a three–year ministry, ending in 30 A.D. The ...
What is the Zodiac? The Zodiac is defined by 12 constellations
... Claudius Ptolemy of Alexandria (90 – 168 AD) was a Greek astronomer who borrowed his information from the ancient Babylonian texts and he listed the 48 constellations that are recognized as the Zodiac. The IAU (International Astronomical Union) established in 1919 has identified 88 constellations. T ...
... Claudius Ptolemy of Alexandria (90 – 168 AD) was a Greek astronomer who borrowed his information from the ancient Babylonian texts and he listed the 48 constellations that are recognized as the Zodiac. The IAU (International Astronomical Union) established in 1919 has identified 88 constellations. T ...
Sermon Notes
... Claudius Ptolemy of Alexandria (90 – 168 AD) was a Greek astronomer who borrowed his information from the ancient Babylonian texts and he listed the 48 constellations that are recognized as the Zodiac. The IAU (International Astronomical Union) established in 1919 has identified 88 constellations. T ...
... Claudius Ptolemy of Alexandria (90 – 168 AD) was a Greek astronomer who borrowed his information from the ancient Babylonian texts and he listed the 48 constellations that are recognized as the Zodiac. The IAU (International Astronomical Union) established in 1919 has identified 88 constellations. T ...
The birth and life of stars
... when hydrogen fusion is about to begin in the core, the pre–main-sequence star may undergo vigorous chromospheric activity that ejects large amounts of matter into space. G, K, and M stars at this stage are called T Tauri stars. A collection of a few hundred or a few thousand newborn stars formed ...
... when hydrogen fusion is about to begin in the core, the pre–main-sequence star may undergo vigorous chromospheric activity that ejects large amounts of matter into space. G, K, and M stars at this stage are called T Tauri stars. A collection of a few hundred or a few thousand newborn stars formed ...
docx - STAO
... galaxies), using appropriate scientific terminology and units (e.g., astronomical units, scientific notation, light years) ...
... galaxies), using appropriate scientific terminology and units (e.g., astronomical units, scientific notation, light years) ...
Teacher Demo: Bright Star or Close Star?
... galaxies), using appropriate scientific terminology and units (e.g., astronomical units, scientific notation, light years) ...
... galaxies), using appropriate scientific terminology and units (e.g., astronomical units, scientific notation, light years) ...
Global star formation in the Milky Way from the VIALACTEA
... and history in a normal Galaxy like the Milky Way ? • What are the ingredients determining star formation laws as a function of ISM properties across a full range of galactocentric radii, metallicity and environmental ...
... and history in a normal Galaxy like the Milky Way ? • What are the ingredients determining star formation laws as a function of ISM properties across a full range of galactocentric radii, metallicity and environmental ...
Ch 11c and 12 ( clusters 3-31-11)
... under gravity and heats up, it becomes a protostar surrounded by a spinning disk of gas. • When core gets hot enough (10 million K), fusion of hydrogen begins and stops the shrinking • New star achieves long-lasting state of balance (main sequence thermostat) ...
... under gravity and heats up, it becomes a protostar surrounded by a spinning disk of gas. • When core gets hot enough (10 million K), fusion of hydrogen begins and stops the shrinking • New star achieves long-lasting state of balance (main sequence thermostat) ...
Stellar Classification and Evolution What is a star? A cloud of gas
... from helium fusion _____________ much of their mass The ejected material expands and cools, becoming a planetary ________________ (which actually has nothing to do with planets, but we didn’t know that in the 18th century when Herschel coined the term) The core _____________________ to form a Wh ...
... from helium fusion _____________ much of their mass The ejected material expands and cools, becoming a planetary ________________ (which actually has nothing to do with planets, but we didn’t know that in the 18th century when Herschel coined the term) The core _____________________ to form a Wh ...
PDF of story and photos
... picture of star formation. In stellar nurseries, many stars often form in the same cloud of gas and dust. The biggest stars begin producing light before the smaller stars. This means that the energy released by the biggest stars can affect the smaller, still-forming stars that are near the big stars ...
... picture of star formation. In stellar nurseries, many stars often form in the same cloud of gas and dust. The biggest stars begin producing light before the smaller stars. This means that the energy released by the biggest stars can affect the smaller, still-forming stars that are near the big stars ...
7_Big_bang
... use up its hydrogen. Note, Sun has been shinning for 4.6 B. years so it has about 5 B. more years to go before becoming a red giant. More massive stars, last much less then 10 B. years. Less massive stars last longer. ...
... use up its hydrogen. Note, Sun has been shinning for 4.6 B. years so it has about 5 B. more years to go before becoming a red giant. More massive stars, last much less then 10 B. years. Less massive stars last longer. ...
Life Histories Of Some Stars
... compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particles of gas and dust are attracted to each other through gravitational attraction. But ...
... compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particles of gas and dust are attracted to each other through gravitational attraction. But ...
Life Histories Of Some Stars
... compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particles of gas and dust are attracted to each other through gravitational attraction. But ...
... compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particles of gas and dust are attracted to each other through gravitational attraction. But ...
Life Histories Stars
... compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particles of gas and dust are attracted to each other through gravitational attraction. But ...
... compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particles of gas and dust are attracted to each other through gravitational attraction. But ...
Celestial Distances
... In contrast, most stars are constant in their luminosity (at least within a percent or two) ...
... In contrast, most stars are constant in their luminosity (at least within a percent or two) ...
astro2_lec1 - Astronomy & Astrophysics Group
... distances to dozens of nebulae. Even the nearest, in Andromeda, was millions of light ...
... distances to dozens of nebulae. Even the nearest, in Andromeda, was millions of light ...
Stars
... Some constellations are visible only in the northern or the southern hemisphere Circumpolar constellations appear to rotate around Polaris (north star) Some constellations are only visible during certain times of the year ...
... Some constellations are visible only in the northern or the southern hemisphere Circumpolar constellations appear to rotate around Polaris (north star) Some constellations are only visible during certain times of the year ...
Draco: The Dragon - Courtney Stookey
... constellation. The star is referred to as ‘the serpent’. This is an orange giant that is about 148 light years distant. While Eltanin is the brightest star in the constellation, Thuban, or 3445 alpha Draconis, is not very noticeable in comparison. This star is referred to as ‘the basilisk’. Thuban i ...
... constellation. The star is referred to as ‘the serpent’. This is an orange giant that is about 148 light years distant. While Eltanin is the brightest star in the constellation, Thuban, or 3445 alpha Draconis, is not very noticeable in comparison. This star is referred to as ‘the basilisk’. Thuban i ...
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.