The Earth`s Orbital Velocity
... By measuring the Doppler shift in a stellar spectrum, astronomers can determine the orbital velocity of the Earth, the radial velocities of stars, and the Earth's orbital radius (the astronomical unit). In this exercise you will use actual astronomical observations (spectra) of the star Arcturus (α ...
... By measuring the Doppler shift in a stellar spectrum, astronomers can determine the orbital velocity of the Earth, the radial velocities of stars, and the Earth's orbital radius (the astronomical unit). In this exercise you will use actual astronomical observations (spectra) of the star Arcturus (α ...
slides - Indico
... – Discovery of 8 new r-II stars ; 35 new r-I stars; numerous sprocess-enhanced stars, numerous carbon-enhanced stars – Discovery of new “U Star”: CS 29497-004 (Hill et al. 2005) ...
... – Discovery of 8 new r-II stars ; 35 new r-I stars; numerous sprocess-enhanced stars, numerous carbon-enhanced stars – Discovery of new “U Star”: CS 29497-004 (Hill et al. 2005) ...
PHYS_3380_082615_bw - The University of Texas at Dallas
... them to tell what month it is. For example, Scorpius is only visible in the northern hemisphere's evening sky in the summer. - many of the myths associated with the constellations thought to have been invented to help the farmers remember them - made up stories about them ...
... them to tell what month it is. For example, Scorpius is only visible in the northern hemisphere's evening sky in the summer. - many of the myths associated with the constellations thought to have been invented to help the farmers remember them - made up stories about them ...
A Planetary System Around Our Nearest Star is Emerging
... planet is as massive as Earth, only 13% more massive, although too hot for life. This new result opens the possibilit might be other Earth-size planets in the Alpha Centauri system, including some potentially habitable. The Alpha Centauri stellar system consists of three stars about 4.4 light years ...
... planet is as massive as Earth, only 13% more massive, although too hot for life. This new result opens the possibilit might be other Earth-size planets in the Alpha Centauri system, including some potentially habitable. The Alpha Centauri stellar system consists of three stars about 4.4 light years ...
CARBON STARS
... • Classical models of giant stars don’t allow for a convective zone deep enough to dredge-up the carbon material formed in deeper layers • BUT – a He shell flash can create a convective zone, and if hot enough can penetrate the H shell and bring material to the surface ...
... • Classical models of giant stars don’t allow for a convective zone deep enough to dredge-up the carbon material formed in deeper layers • BUT – a He shell flash can create a convective zone, and if hot enough can penetrate the H shell and bring material to the surface ...
class 1,S11
... • How is Earth moving in our solar system? — It rotates on its axis once a day and orbits the Sun at a distance of 1 AU = 150 million km • How is our solar system moving in the Milky Way Galaxy? — Stars in the Local Neighborhood move randomly relative to one another and orbit the center of the Milky ...
... • How is Earth moving in our solar system? — It rotates on its axis once a day and orbits the Sun at a distance of 1 AU = 150 million km • How is our solar system moving in the Milky Way Galaxy? — Stars in the Local Neighborhood move randomly relative to one another and orbit the center of the Milky ...
talk
... modified blackbody fit to global data from 60 to 800 m (cf. Klaas et al. 2001) • M(H2) = 0.8 L(CO1-0) (Downes & Solomon 1998); assume CO3-2/1-0=0.5 (our data) • Calculate gas to dust ratio in central beam only (CO much more sensitive than continuum per unit mass) • Average gas/dust ratio = 120 +/- ...
... modified blackbody fit to global data from 60 to 800 m (cf. Klaas et al. 2001) • M(H2) = 0.8 L(CO1-0) (Downes & Solomon 1998); assume CO3-2/1-0=0.5 (our data) • Calculate gas to dust ratio in central beam only (CO much more sensitive than continuum per unit mass) • Average gas/dust ratio = 120 +/- ...
Chasing the Pole — Howard L. Cohen
... complete once. (This dim star was first seen by William Herschel in 1780.) Try observing this faint double even if you only have a two or three-inch aperture telescope. This star has even been seen with apertures less than two inches (Hirshfeld and Sinnott 1985). Note: An arc second (arc sec or ") i ...
... complete once. (This dim star was first seen by William Herschel in 1780.) Try observing this faint double even if you only have a two or three-inch aperture telescope. This star has even been seen with apertures less than two inches (Hirshfeld and Sinnott 1985). Note: An arc second (arc sec or ") i ...
How far away are the Stars?
... The Distance to the Stars! • Angular Separation is not enough! • We want to know the answer to the ‘age old question’: How far away are the stars? ...
... The Distance to the Stars! • Angular Separation is not enough! • We want to know the answer to the ‘age old question’: How far away are the stars? ...
5th Grade - STEMscopes
... Apparent brightness depends partly on distance from Earth Stars can appear to be brighter due to their distance from Earth. Distance from Earth is measured in light years. The closest star to Earth is the Sun, only 8 ! light min away. The next closest star, alpha centauri, is 4.4 light years from Ea ...
... Apparent brightness depends partly on distance from Earth Stars can appear to be brighter due to their distance from Earth. Distance from Earth is measured in light years. The closest star to Earth is the Sun, only 8 ! light min away. The next closest star, alpha centauri, is 4.4 light years from Ea ...
Jupiter – key facts Largest and most massive planet in the Solar
... shows different ages suggesFng that a semi-‐liquid mantle may exist under the icy crust Callisto – the most distantly orbiFng of the galilean satellites. Mean density suggests that Callisto is largel ...
... shows different ages suggesFng that a semi-‐liquid mantle may exist under the icy crust Callisto – the most distantly orbiFng of the galilean satellites. Mean density suggests that Callisto is largel ...
Globular Clusters
... scope. Dimmer than similar globs M55 or M12, but near the Class 1 NGC 2801 for a comparison. Best at 7:30pm. Gets quite low later. M10 & M12 in Ophiuchus are about the same distance and brightness (6.6), but M12 is Class IX, broadly concentrated with a lower surface brightness than M10. M10 is Class ...
... scope. Dimmer than similar globs M55 or M12, but near the Class 1 NGC 2801 for a comparison. Best at 7:30pm. Gets quite low later. M10 & M12 in Ophiuchus are about the same distance and brightness (6.6), but M12 is Class IX, broadly concentrated with a lower surface brightness than M10. M10 is Class ...
OUR SOLAR SYSTEM
... mass is accounted for. The main belt starts at 2.06 AU, where objects make four orbits around the Sun in the time it takes Jupiter to make one. Astronomers call this a 4:1 orbital resonance. Whenever an asteroid’s orbital period is a whole number fraction of Jupiter’s orbital period, the giant plane ...
... mass is accounted for. The main belt starts at 2.06 AU, where objects make four orbits around the Sun in the time it takes Jupiter to make one. Astronomers call this a 4:1 orbital resonance. Whenever an asteroid’s orbital period is a whole number fraction of Jupiter’s orbital period, the giant plane ...
Part 2 - Hewlett
... 8. Which planet has a longer day than year? ____________________________________________ Saturn 9. Which planet would float in water (if you had a container large enough)? ____________________ 11 times larger 10. How many times larger is Jupiter than the Earth? ______________________________________ ...
... 8. Which planet has a longer day than year? ____________________________________________ Saturn 9. Which planet would float in water (if you had a container large enough)? ____________________ 11 times larger 10. How many times larger is Jupiter than the Earth? ______________________________________ ...
Slides from the first lecture
... • Assume the Sun was originally much larger than it is today, and contracted. This releases gravitational potential energy. • The initial potential energy is ~0 (since R is large). The change in energy is therefore: ...
... • Assume the Sun was originally much larger than it is today, and contracted. This releases gravitational potential energy. • The initial potential energy is ~0 (since R is large). The change in energy is therefore: ...
7-12 Script - Geophysical Institute
... and traditions. The ones pictured here come from the Greeks and Romans and are now known by astronomers all around the world. TURN OFF THE CONSTELLATION ILLUSTRATIONS. ) Pleiades Story: Even though most of us only know the common Greek/Roman constellations, people throughout the world have different ...
... and traditions. The ones pictured here come from the Greeks and Romans and are now known by astronomers all around the world. TURN OFF THE CONSTELLATION ILLUSTRATIONS. ) Pleiades Story: Even though most of us only know the common Greek/Roman constellations, people throughout the world have different ...
ASTR 1B - Texas Tech University Departments
... (2) Nature of science. Science, as defined by the National Academy of Sciences, is the "use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process." This vast body of changing and increasing knowledge is described ...
... (2) Nature of science. Science, as defined by the National Academy of Sciences, is the "use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process." This vast body of changing and increasing knowledge is described ...
Neutron stars and quark stars - Goethe
... • MIT bag and rotation (Bhattacharyya, Ghosh, Hanauske, Raha, 2004) • Kaon condensate, quarks and rotation (Banik, Hanauske, ...
... • MIT bag and rotation (Bhattacharyya, Ghosh, Hanauske, Raha, 2004) • Kaon condensate, quarks and rotation (Banik, Hanauske, ...
TNO Time Allocation Committee
... slingshot prominences have been recorded spectroscopically by several authors, e.g. QS Vir (Parsons et al. 2011), SDSS J0039+0054 (Southworth et al. 2010), AM Her (Gaensicke et al.1998), IP Peg and SS Cyg (Steeghs et al. 1996). The eruptive events in these binaries are known to originate from the ac ...
... slingshot prominences have been recorded spectroscopically by several authors, e.g. QS Vir (Parsons et al. 2011), SDSS J0039+0054 (Southworth et al. 2010), AM Her (Gaensicke et al.1998), IP Peg and SS Cyg (Steeghs et al. 1996). The eruptive events in these binaries are known to originate from the ac ...
Our Place in the Cosmos Elective Course Autumn 2006
... backwards • In the same way, light from a distant star appears to be coming from a slightly different direction due to Earth’s motion through space • Over the course of a year stars appear to trace out a loop - aberration of starlight ...
... backwards • In the same way, light from a distant star appears to be coming from a slightly different direction due to Earth’s motion through space • Over the course of a year stars appear to trace out a loop - aberration of starlight ...
Carolina Kehrig
... Searches for PopIII-objects is one of the main science drivers for JWST (Johnson 2010; Visbal+2015) preparation of future studies of the first SF galaxies Before interpreting high-z HeII-emitters & use HeII line to infer properties of distant starburst, it is crucial to understand the formatio ...
... Searches for PopIII-objects is one of the main science drivers for JWST (Johnson 2010; Visbal+2015) preparation of future studies of the first SF galaxies Before interpreting high-z HeII-emitters & use HeII line to infer properties of distant starburst, it is crucial to understand the formatio ...
Slide 1
... of the Virgo Cluster (a 'rich' cluster) and about 100 other clusters including Local Grp. We are falling toward Virgo ...
... of the Virgo Cluster (a 'rich' cluster) and about 100 other clusters including Local Grp. We are falling toward Virgo ...
Lecture 11: The Internal Structure of Stars
... The Main Sequence Strong correlation between Luminosity and Temperature Holds for 85% of nearby stars including the Sun All other stars differ in size from main sequence stars Giants & Supergiants Very large radii, but same masses as main-sequence stars White Dwarfs Very compact (about 1 earth radiu ...
... The Main Sequence Strong correlation between Luminosity and Temperature Holds for 85% of nearby stars including the Sun All other stars differ in size from main sequence stars Giants & Supergiants Very large radii, but same masses as main-sequence stars White Dwarfs Very compact (about 1 earth radiu ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.