WISE General Presentation - Georgia Southern University
... type of light collected from it: Since shortly after Herschel discovered infrared light astronomers have been observing astronomical objects in Infrared Light to get a more complete picture ...
... type of light collected from it: Since shortly after Herschel discovered infrared light astronomers have been observing astronomical objects in Infrared Light to get a more complete picture ...
X. Nuclear star clusters in low-mass early-type galaxies
... that the evolution of NSCs and SMBHs may possibly somehow be linked. Likely there is some interaction between NSCs and SMBHs, such that one may prevent the growth of the other or even destroy it (McLaughlin, King & Nayakshin 2006; Merritt 2009; Nayakshin, Wilkinson & King 2009). The Milky Way was th ...
... that the evolution of NSCs and SMBHs may possibly somehow be linked. Likely there is some interaction between NSCs and SMBHs, such that one may prevent the growth of the other or even destroy it (McLaughlin, King & Nayakshin 2006; Merritt 2009; Nayakshin, Wilkinson & King 2009). The Milky Way was th ...
from z=0 to z=1
... ratio (attenuation) for UV galaxies. For IR (24m) selected galaxies at z~0.6, no evidence is found for evolution of either the stellar mass or the IR/UV ratio for given LIR. 8. Both IR and UV evolve significantly from z=0 to z=1, and the ratio IR/UV increases by ~ 4. This is consistent with the ...
... ratio (attenuation) for UV galaxies. For IR (24m) selected galaxies at z~0.6, no evidence is found for evolution of either the stellar mass or the IR/UV ratio for given LIR. 8. Both IR and UV evolve significantly from z=0 to z=1, and the ratio IR/UV increases by ~ 4. This is consistent with the ...
CELESTIAL COORDINATES
... From a latitude of 40°, an object with a declination of +40° will, at some point in time during the day or night, pass directly overhead through the zenith. In general Declination at zenith = Latitude of observer The 24 Ephemeris Stars in the SBO Catalog of Astronomical Objects have Object Numbers r ...
... From a latitude of 40°, an object with a declination of +40° will, at some point in time during the day or night, pass directly overhead through the zenith. In general Declination at zenith = Latitude of observer The 24 Ephemeris Stars in the SBO Catalog of Astronomical Objects have Object Numbers r ...
Exercise 7.0
... Moon cycles through its coordinates in about one month. The time required for a planet to do this depends on its period of revolution. Because the orbits of the planets of our Solar System lie nearly in the same plane as the Earth’s orbit, the planetary orbits are circles in the sky close to the ecl ...
... Moon cycles through its coordinates in about one month. The time required for a planet to do this depends on its period of revolution. Because the orbits of the planets of our Solar System lie nearly in the same plane as the Earth’s orbit, the planetary orbits are circles in the sky close to the ecl ...
Imaging the Universe Robert Mutel A Laboratory Manual for Introductory Astronomy
... is expected. This worksheet is designed to help you either catch up, or remember the math that you were supposed to have learned in high school. Do not be intimidated by this worksheet! Most of what follows is the sort of math that you use in your everyday life, when calculating tips, or balancing y ...
... is expected. This worksheet is designed to help you either catch up, or remember the math that you were supposed to have learned in high school. Do not be intimidated by this worksheet! Most of what follows is the sort of math that you use in your everyday life, when calculating tips, or balancing y ...
Chemical analysis of 24 dusty (pre-) main
... Despite the broad wavelength coverage, for several program stars only a few lines turned out to be appropriate for detailed abundance analyses. Such a circumstance is not unusual for A/B-type stars, where the condition that spectral lines with equivalent widths higher than 150 mÅ should be avoided i ...
... Despite the broad wavelength coverage, for several program stars only a few lines turned out to be appropriate for detailed abundance analyses. Such a circumstance is not unusual for A/B-type stars, where the condition that spectral lines with equivalent widths higher than 150 mÅ should be avoided i ...
Clusters as laboratories for the study of galaxy evolution
... form the ellipticals, as long as the merging does not trigger significant star formation. From the lack of evolution in the shape of the bright end of the K-band LF we can however deduce that if the massive ellipticals in clusters formed through merging, it took place at higher redshifts (z >> 1 ) t ...
... form the ellipticals, as long as the merging does not trigger significant star formation. From the lack of evolution in the shape of the bright end of the K-band LF we can however deduce that if the massive ellipticals in clusters formed through merging, it took place at higher redshifts (z >> 1 ) t ...
Mn, Cu, and Zn abundances in barium stars and their correlations
... heavy elements, other elements than those discussed here are also shown in tables, in order to assemble all abundances determined so far for these stars in a single source, as explained in Sects. 3.1 and 3.3. Smiljanic and co-authors had already derived abundances for some of these elements through ...
... heavy elements, other elements than those discussed here are also shown in tables, in order to assemble all abundances determined so far for these stars in a single source, as explained in Sects. 3.1 and 3.3. Smiljanic and co-authors had already derived abundances for some of these elements through ...
Star Clusters - Caltech Astronomy
... ordinary, optically visible open clusters, does the one class evolve into the other? That is to say, when the molecular clouds surrounding these embedded clusters dissipate in a few million years, will there be an apparent ordinary open cluster there, or will the stars dissipate as fast as the gas? ...
... ordinary, optically visible open clusters, does the one class evolve into the other? That is to say, when the molecular clouds surrounding these embedded clusters dissipate in a few million years, will there be an apparent ordinary open cluster there, or will the stars dissipate as fast as the gas? ...
1 CHAPTER 18 SPECTROSCOPIC BINARY STARS 18.1
... that there are two stars from their spectra. In favourable circumstances, two distinct spectra can be seen. It might be that the spectral types of the two components are very different – perhaps a hot A-type star and a cool K-type star, and it is easy to recognize that there must be two stars there. ...
... that there are two stars from their spectra. In favourable circumstances, two distinct spectra can be seen. It might be that the spectral types of the two components are very different – perhaps a hot A-type star and a cool K-type star, and it is easy to recognize that there must be two stars there. ...
Radial Velocity - Yale Exoplanet
... a typical precision of 750 m s−1 , not the precision that is typically associated with planet-hunting. However, at that time, Otto Struve proposed that high precision stellar radial velocity work could be used to search for planets orbiting nearby stars. He made the remarkable assertion that Jupiter ...
... a typical precision of 750 m s−1 , not the precision that is typically associated with planet-hunting. However, at that time, Otto Struve proposed that high precision stellar radial velocity work could be used to search for planets orbiting nearby stars. He made the remarkable assertion that Jupiter ...
Kidd_Thesis_2015April15_Final.
... Henrietta Leavitt who, while plotting and examining the stars’ light curves, discovered there is a relationship between their period and luminosity. Brighter mean magnitude stars have longer periods. A little later, Harlow Shapley used what she had discovered in addition to the absolute magnitude of ...
... Henrietta Leavitt who, while plotting and examining the stars’ light curves, discovered there is a relationship between their period and luminosity. Brighter mean magnitude stars have longer periods. A little later, Harlow Shapley used what she had discovered in addition to the absolute magnitude of ...
Kidd_Thesis_2015April14_Final.
... Henrietta Leavitt who, while plotting and examining the stars’ light curves, discovered there is a relationship between their period and luminosity. Brighter mean magnitude stars have longer periods. A little later, Harlow Shapley used what she had discovered in addition to the absolute magnitude of ...
... Henrietta Leavitt who, while plotting and examining the stars’ light curves, discovered there is a relationship between their period and luminosity. Brighter mean magnitude stars have longer periods. A little later, Harlow Shapley used what she had discovered in addition to the absolute magnitude of ...
Stardust--Snapshots of Stars
... http://www.psrd.hawaii.edu/CosmoSparks/Oct10/NanoSIMS-stardust.html ...
... http://www.psrd.hawaii.edu/CosmoSparks/Oct10/NanoSIMS-stardust.html ...
3-1
... B. 0.6 + 0.008 + 0.0007 Standard form: 0.6087 Word form: six thousand eighty-seven tenthousandths Course 1 ...
... B. 0.6 + 0.008 + 0.0007 Standard form: 0.6087 Word form: six thousand eighty-seven tenthousandths Course 1 ...
Astronomy and Astrophysics 336, 972, 1998
... One of the major puzzles in the study of stellar surfaces has been the discovery of cool starspots at high latitudes or even, as frequently appears, a cool cap at the rotation poles of rapidlyrotating late-type stars. The puzzle comes because the Sun shows spots only in two narrow equatorial bands. ...
... One of the major puzzles in the study of stellar surfaces has been the discovery of cool starspots at high latitudes or even, as frequently appears, a cool cap at the rotation poles of rapidlyrotating late-type stars. The puzzle comes because the Sun shows spots only in two narrow equatorial bands. ...
Published in Contemp. Phys. 51, 464-465 (2010).
... it will fade until, in ∼210,000 years time, it will relinquish its title as our brightest star. Sirius would have passed right across the Milky Way during the stone age. One of the Arabic names for Sirius is al-schira al-abur, or “Sirius which has passed across”, raising the fascinating speculation ...
... it will fade until, in ∼210,000 years time, it will relinquish its title as our brightest star. Sirius would have passed right across the Milky Way during the stone age. One of the Arabic names for Sirius is al-schira al-abur, or “Sirius which has passed across”, raising the fascinating speculation ...
Gas fraction and star formation efficiency at z< 1.0
... to drive the gas quickly to galaxy centers and to trigger starbursts. Locally Ultra-Luminous Infra-Red Galaxies (ULIRGs), with LFIR > 1012 L⊙ , are in the majority starbursts caused by galaxy major mergers (e.g. Sanders & Mirabel 1996, Veilleux et al. 2009). The overall gas fraction in those systems ...
... to drive the gas quickly to galaxy centers and to trigger starbursts. Locally Ultra-Luminous Infra-Red Galaxies (ULIRGs), with LFIR > 1012 L⊙ , are in the majority starbursts caused by galaxy major mergers (e.g. Sanders & Mirabel 1996, Veilleux et al. 2009). The overall gas fraction in those systems ...
pvb-based star compositions
... All these are bright-burning, easy to ignite and show a good colour. The yellow, with its high pro- ...
... All these are bright-burning, easy to ignite and show a good colour. The yellow, with its high pro- ...
PowerPoint Presentation - Isolated Neutron Stars, solid crust
... observational resources have been devoted to study the faint thermal emission from neutron stars and to search for features in their spectrum. Isolated neutron stars play a key role in compact objects astrophysics: these are the only sources in which we can see directly the surface of the compact st ...
... observational resources have been devoted to study the faint thermal emission from neutron stars and to search for features in their spectrum. Isolated neutron stars play a key role in compact objects astrophysics: these are the only sources in which we can see directly the surface of the compact st ...
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.