2009_ASU_Exam
... 13) Star N and Star O are both main sequence stars. Star N is of spectral class A0 and Star O is of spectral class K5. They have the same apparent magnitude as observed from earth. If an observer were able to move 10 pcs closer to both stars, which star will appear brighter from the new observation ...
... 13) Star N and Star O are both main sequence stars. Star N is of spectral class A0 and Star O is of spectral class K5. They have the same apparent magnitude as observed from earth. If an observer were able to move 10 pcs closer to both stars, which star will appear brighter from the new observation ...
Astronomy
... If stars rotate with periods of tens of days, why does a neutron star rotate several to thousands of times a second? A. When a neutron star collapses, the intensified magnetic field causes it to rotate much more quickly. B. When a neutron star collapses, its rotation is kicked up by the ejected mat ...
... If stars rotate with periods of tens of days, why does a neutron star rotate several to thousands of times a second? A. When a neutron star collapses, the intensified magnetic field causes it to rotate much more quickly. B. When a neutron star collapses, its rotation is kicked up by the ejected mat ...
Orion - Starry Starry Night!
... Canis Major is a constellation in the southern celestial hemisphere. Visible : Jan, Feb, Mar, Apr, Dec Winter - Spring Canis Major contains Sirius, the brightest star in the night sky, known as the "dog star". It is bright because of its proximity to our Solar System. In contrast, the other bright s ...
... Canis Major is a constellation in the southern celestial hemisphere. Visible : Jan, Feb, Mar, Apr, Dec Winter - Spring Canis Major contains Sirius, the brightest star in the night sky, known as the "dog star". It is bright because of its proximity to our Solar System. In contrast, the other bright s ...
AST 112 – Activity #4 The Stellar Magnitude System
... To determine the distance to a star given its apparent and absolute magnitudes ...
... To determine the distance to a star given its apparent and absolute magnitudes ...
Spring Constellations
... Leo, the lion. Directly under the Big Dipper, the brightest star is Regulus (king of the stars, 80 LY away & 100X sun’s brightness.) 2nd brightest star is Denebola, lion’s hindquarters. Regulus is almost exactly on the ecliptic. This part of the sky with the Bear & Lion is the “carnivore’s corner.” ...
... Leo, the lion. Directly under the Big Dipper, the brightest star is Regulus (king of the stars, 80 LY away & 100X sun’s brightness.) 2nd brightest star is Denebola, lion’s hindquarters. Regulus is almost exactly on the ecliptic. This part of the sky with the Bear & Lion is the “carnivore’s corner.” ...
Galactic Star Formation Science with Integral Field
... Emission, seen in scattered light images of T Tauri stars Gas in Circumstellar Disks – As much as 99% of the mass in circumstellar disks is in GAS not DUST Disk Gas is traced by: • mm molecular observations of cold outer disk gas • IR emission species trace warm gas from ~terrestrial regions of disk ...
... Emission, seen in scattered light images of T Tauri stars Gas in Circumstellar Disks – As much as 99% of the mass in circumstellar disks is in GAS not DUST Disk Gas is traced by: • mm molecular observations of cold outer disk gas • IR emission species trace warm gas from ~terrestrial regions of disk ...
Astronomy 122 mid Term Exam
... star is hotter and how do you know this? B-V is a measure of the ratio of flux through the blue filter to flux through the visual (green) filter. The more flux there is in B relative to V the hotter the star and the lower the B-V index is. Again, observe the change in B-V color in the blackbody simu ...
... star is hotter and how do you know this? B-V is a measure of the ratio of flux through the blue filter to flux through the visual (green) filter. The more flux there is in B relative to V the hotter the star and the lower the B-V index is. Again, observe the change in B-V color in the blackbody simu ...
Micro_lect20a
... 3. Betelgeuse is also known as Alpha Orionis, one of the brightest stars in the familiar constellation of Orion, the Hunter. 4. The name Betelgeuse is Arabic in origin. As a massive red supergiant, it is nearing the end of its life and will soon become a supernova. In this historic image, a bright h ...
... 3. Betelgeuse is also known as Alpha Orionis, one of the brightest stars in the familiar constellation of Orion, the Hunter. 4. The name Betelgeuse is Arabic in origin. As a massive red supergiant, it is nearing the end of its life and will soon become a supernova. In this historic image, a bright h ...
SN 1054
SN 1054 is a supernova that was first observed on 4 July 1054 A.D. (hence its name), and that lasted for a period of around two years. The event was recorded in contemporary Chinese astronomy, and references to it are also found in a later (13th-century) Japanese document, and in a document from the Arab world. Furthermore, there are a number of proposed, but doubtful, references from European sources recorded in the 15th century, and perhaps a pictograph associated with the Ancestral Puebloan culture found near the Peñasco Blanco site in New Mexico.The remnant of SN 1054, which consists of debris ejected during the explosion, is known as the Crab Nebula. It is located in the sky near the star Zeta Tauri (ζ Tauri). The core of the exploding star formed a pulsar, called the Crab Pulsar (or PSR B0531+21). The nebula and the pulsar it contains are the most studied astronomical objects outside the Solar System. It is one of the few Galactic supernovae where the date of the explosion is well known. The two objects are the most luminous in their respective categories. For these reasons, and because of the important role it has repeatedly played in the modern era, SN 1054 is the best known supernova in the history of astronomy.The Crab Nebula is easily observed by amateur astronomers thanks to its brightness, and was also catalogued early on by professional astronomers, long before its true nature was understood and identified. When the French astronomer Charles Messier watched for the return of Halley's Comet in 1758, he confused the nebula for the comet, as he was unaware of the former's existence. Due to this error, he created his catalogue of non-cometary nebulous objects, the Messier Catalogue, to avoid such mistakes in the future. The nebula is catalogued as the first Messier object, or M1.