Nulling Interferometer
... stars and Herbig Ae/Be stars. Disk would be only 0.2” across, so too small for direct imaging detection, but would not have a null of < 40\%. ...
... stars and Herbig Ae/Be stars. Disk would be only 0.2” across, so too small for direct imaging detection, but would not have a null of < 40\%. ...
Spectroscopy and Spectrophotometry
... • In absorp@on, an iodine cell is placed between the gra@ng and the slit. The imaged spectrum thus has iodine absorp@on features. • In emission a second reference spectrum is generated that is spa@ally separated on the CCD e.g. using a Thorium lamp. • A new technique being considered is to ...
... • In absorp@on, an iodine cell is placed between the gra@ng and the slit. The imaged spectrum thus has iodine absorp@on features. • In emission a second reference spectrum is generated that is spa@ally separated on the CCD e.g. using a Thorium lamp. • A new technique being considered is to ...
NSDL_WS_1_Astonomy
... most influence how stars are formed? Consider: • Mass of the initial gas cloud • Temperature of the gas ...
... most influence how stars are formed? Consider: • Mass of the initial gas cloud • Temperature of the gas ...
CHAPTER 1 The Formation and Structure of Stars
... move more rapidly than do those in a cool gas. – Although the interstellar clouds are very cold, even at a temperature of only 10 K, the average hydrogen atom moves about 0.5 km/s (1,100 mph). – This thermal motion would make the cloud drift apart if gravity were too weak to hold it together. ...
... move more rapidly than do those in a cool gas. – Although the interstellar clouds are very cold, even at a temperature of only 10 K, the average hydrogen atom moves about 0.5 km/s (1,100 mph). – This thermal motion would make the cloud drift apart if gravity were too weak to hold it together. ...
Week 1
... One hour of right ascension is 15 degrees of celestial longitude (not 15 angular degrees, except at the equator) The sky rotates by at 15 arcseconds per second at the Equator Since lines of RA converge toward the pole – 1 minute of RA spans a different angle depending on Declination – a factor of co ...
... One hour of right ascension is 15 degrees of celestial longitude (not 15 angular degrees, except at the equator) The sky rotates by at 15 arcseconds per second at the Equator Since lines of RA converge toward the pole – 1 minute of RA spans a different angle depending on Declination – a factor of co ...
DECODING THE ZODIACAL CONSTELLATIONS-AA
... to precession, the orientation of the earth slowly changes in relation to the stars, because the earth wobbles like a spinning top. It takes a little less than 26,000 years for the earth to experience one rotation of its axis due to its wobble. Therefore, all the stars and constellations slowly appe ...
... to precession, the orientation of the earth slowly changes in relation to the stars, because the earth wobbles like a spinning top. It takes a little less than 26,000 years for the earth to experience one rotation of its axis due to its wobble. Therefore, all the stars and constellations slowly appe ...
Close Double Stars from Video
... Astronomical Research Institute of Thailand, [email protected] • He worked before for a long time at the European Southern Observatory, where he still makes most of his observations • Most observations are recorded in the infrared, allowing higher S/N and even some daytime observations • Observatio ...
... Astronomical Research Institute of Thailand, [email protected] • He worked before for a long time at the European Southern Observatory, where he still makes most of his observations • Most observations are recorded in the infrared, allowing higher S/N and even some daytime observations • Observatio ...
Slide 1
... 1. Conduct a similar investigation of other types of supernova. Go to Analysis>Virtual Observatory>Chandra Ed Archive Server. At the bottom of the page that comes up, click “Unofficial Chandra Public Archive”. On this form, do a search by ObsID or the name of the supernova. Clicking on the title of ...
... 1. Conduct a similar investigation of other types of supernova. Go to Analysis>Virtual Observatory>Chandra Ed Archive Server. At the bottom of the page that comes up, click “Unofficial Chandra Public Archive”. On this form, do a search by ObsID or the name of the supernova. Clicking on the title of ...
FIRST STELLAR ABUNDANCES IN THE DWARF IRREGULAR
... The analysis of bright nebular emission lines of H II regions has been the most frequent approach to modeling chemical evolution of more distant galaxies to date (Matteucci & Tosi 1985). So far, only a very limited number of elements can be examined and quantified when using this approach. The chemi ...
... The analysis of bright nebular emission lines of H II regions has been the most frequent approach to modeling chemical evolution of more distant galaxies to date (Matteucci & Tosi 1985). So far, only a very limited number of elements can be examined and quantified when using this approach. The chemi ...
Extra-solar planets
... of the terrestrial planets continues after the migration: the planetesimals are stirred up by the migrating giant, not necessarily destroyed. Whether small planets survive depends mostly on how fast the giant planet migrates, as well as how massive they are. Simulations using “reasonable guesses” fo ...
... of the terrestrial planets continues after the migration: the planetesimals are stirred up by the migrating giant, not necessarily destroyed. Whether small planets survive depends mostly on how fast the giant planet migrates, as well as how massive they are. Simulations using “reasonable guesses” fo ...
ADDENDUM TO PRODUCT MANUAL
... the third alignment star does not lie in a straight line between the first two stars. This may result in a failed alignment. Don’t worry about confusing planets for stars when selecting alignment objects. SkyAlign works with the four brightest planets (Venus, Jupiter, Saturn and Mars) as well as the ...
... the third alignment star does not lie in a straight line between the first two stars. This may result in a failed alignment. Don’t worry about confusing planets for stars when selecting alignment objects. SkyAlign works with the four brightest planets (Venus, Jupiter, Saturn and Mars) as well as the ...
M81/M82/NGC3077
... (CBR value: 48 km/sec) M82 — 202 km/sec (3.9 ± 0.3 Mpc) (CBR value: 296 km/sec) M81 is closer and approaching, while M82 is farther away and receding; ...
... (CBR value: 48 km/sec) M82 — 202 km/sec (3.9 ± 0.3 Mpc) (CBR value: 296 km/sec) M81 is closer and approaching, while M82 is farther away and receding; ...
Stars and Galaxies - Red Hook Central Schools
... half a million miles per hour around the center of the Galaxy takes our Solar System about 200 million years to revolve once around our galaxy ...
... half a million miles per hour around the center of the Galaxy takes our Solar System about 200 million years to revolve once around our galaxy ...
Planetary Nebula
... Like many other planetary nebulae, IC 4406 exhibits a high degree of symmetry; the left and right halves are nearly mirror images of the other. If we could fly around IC 4406 in a starship, we would see that the gas and dust form a vast donut of material streaming outward from the dying star. This H ...
... Like many other planetary nebulae, IC 4406 exhibits a high degree of symmetry; the left and right halves are nearly mirror images of the other. If we could fly around IC 4406 in a starship, we would see that the gas and dust form a vast donut of material streaming outward from the dying star. This H ...
Low-Res Version - Chandra X
... galaxy. It was formed from a relatively recent (30 million years ago) merger of two smaller galaxies. The merger is causing stars to form, evolve, and explode at an exceptionally rapid rate, creating the large cloud of multimillion degree Celsius gas seen in this image. The central region of the mer ...
... galaxy. It was formed from a relatively recent (30 million years ago) merger of two smaller galaxies. The merger is causing stars to form, evolve, and explode at an exceptionally rapid rate, creating the large cloud of multimillion degree Celsius gas seen in this image. The central region of the mer ...
Astronomy and the Bible
... The popular theory is that stars form from vast clouds of gas and dust through gravitational contraction. Because of heat pressure gas and dust clouds will expand, NOT contract. “The complete birth of a star has never been observed. The principles of physics demand some special conditions for st ...
... The popular theory is that stars form from vast clouds of gas and dust through gravitational contraction. Because of heat pressure gas and dust clouds will expand, NOT contract. “The complete birth of a star has never been observed. The principles of physics demand some special conditions for st ...
Chapter17.2
... hydrogen fuses to helium in a shell around the helium layer. • This double shell–burning stage never reaches equilibrium—fusion rate periodically spikes upward in a series of thermal pulses. • With each spike, convection dredges carbon up from core and transports it to surface. © 2010 Pearson Educat ...
... hydrogen fuses to helium in a shell around the helium layer. • This double shell–burning stage never reaches equilibrium—fusion rate periodically spikes upward in a series of thermal pulses. • With each spike, convection dredges carbon up from core and transports it to surface. © 2010 Pearson Educat ...
Results from the search for tidal disruption flares in the GALEX Deep
... Why Search For Tidal Disruption Events? • They are an unambiguous probe for supermassive black holes lurking in the nuclei of normal galaxies. • The luminosity, temperature, and decay of the flare is dependent on the mass and spin of the black hole. • They may contribute to black hole growth over c ...
... Why Search For Tidal Disruption Events? • They are an unambiguous probe for supermassive black holes lurking in the nuclei of normal galaxies. • The luminosity, temperature, and decay of the flare is dependent on the mass and spin of the black hole. • They may contribute to black hole growth over c ...
Summer 2014 Mercury - Astronomical Society of the Pacific
... Satellites?” Spring, 2007), I mentioned that Simon Marius (15731624) was a close rival to Galileo when it came to finding the four large satellites of Jupiter. As the court mathematician in Ansbach (part of Bavaria since 1806), Marius began making observations with a telescope in 1609, and on Januar ...
... Satellites?” Spring, 2007), I mentioned that Simon Marius (15731624) was a close rival to Galileo when it came to finding the four large satellites of Jupiter. As the court mathematician in Ansbach (part of Bavaria since 1806), Marius began making observations with a telescope in 1609, and on Januar ...
PowerPoint
... • Doppler shift– toward (blue) and away (red) • Quantum mechanics– electrons can be wave-like – Electrons around nucleus have certain orbits– defines emission and absorption of each atom – When excited, atoms emit certain lines (like in class)– fingerprint or barcode of atom ...
... • Doppler shift– toward (blue) and away (red) • Quantum mechanics– electrons can be wave-like – Electrons around nucleus have certain orbits– defines emission and absorption of each atom – When excited, atoms emit certain lines (like in class)– fingerprint or barcode of atom ...
Chapter 1 The Discovery of Open Clusters - Willmann-Bell
... Very faint nebulae Planetary nebulae Very large nebulae Very compressed, rich clusters of stars Compressed clusters of small and large stars Coarsely scattered clusters of stars. Although now long superseded, the Herschel designations which resulted from this classification system proved sufficientl ...
... Very faint nebulae Planetary nebulae Very large nebulae Very compressed, rich clusters of stars Compressed clusters of small and large stars Coarsely scattered clusters of stars. Although now long superseded, the Herschel designations which resulted from this classification system proved sufficientl ...
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.