Jura et al. 2004 - Department of Physics and Astronomy
... We report spectra obtained with the Spitzer Space Telescope in the λ = 14 – 35 µm range of 19 nearby main-sequence stars with infrared excesses. The six stars with strong dust emission show no recognizable spectral features, suggesting that the bulk of the emitting particles have diameters larger th ...
... We report spectra obtained with the Spitzer Space Telescope in the λ = 14 – 35 µm range of 19 nearby main-sequence stars with infrared excesses. The six stars with strong dust emission show no recognizable spectral features, suggesting that the bulk of the emitting particles have diameters larger th ...
sections 7-8 instructor notes
... The effective wavelengths of the filters are determined both by the shape of the incident stellar continuum and the amount of interstellar and atmospheric reddening, which are difficult to model. The redward shift in λeff caused by atmospheric extinction or large reddening is less of a problem for ...
... The effective wavelengths of the filters are determined both by the shape of the incident stellar continuum and the amount of interstellar and atmospheric reddening, which are difficult to model. The redward shift in λeff caused by atmospheric extinction or large reddening is less of a problem for ...
a transiting planet of a sun-like star
... and the star XO-1, also known as GSC 02041-01657. XO-1 lacks a trigonometric distance; we estimate it to be 200 20 pc. Of the 10 stars currently known to host extrasolar transiting planets, the star XO-1 is the most similar to the Sun in its physical characteristics: its radius is 1:0 0:08 R, i ...
... and the star XO-1, also known as GSC 02041-01657. XO-1 lacks a trigonometric distance; we estimate it to be 200 20 pc. Of the 10 stars currently known to host extrasolar transiting planets, the star XO-1 is the most similar to the Sun in its physical characteristics: its radius is 1:0 0:08 R, i ...
ch19
... • X rays are observed from hot gas above and below the Milky Way's disk. © 2014 Pearson Education, Inc. ...
... • X rays are observed from hot gas above and below the Milky Way's disk. © 2014 Pearson Education, Inc. ...
Spectral Classification of Stars
... "If, on the contrary, two stars should really be situated very near each other, and at the same time so far insulated as not to be materially affected by the attractions of neighbouring stars, they will then compose a separate system, and remain united by the bond of their own mutual gravitation tow ...
... "If, on the contrary, two stars should really be situated very near each other, and at the same time so far insulated as not to be materially affected by the attractions of neighbouring stars, they will then compose a separate system, and remain united by the bond of their own mutual gravitation tow ...
1 Introduction - High Point University
... main sequence line. Antares is a good example of a red giant. Its temperature is a cool 3548 K (the Sun is about 5770 K), while its luminosity is about 50,000 times brighter than the Sun. This must mean that it has a very large radius, in fact about 600 times larger than the solar radius! Similarly, ...
... main sequence line. Antares is a good example of a red giant. Its temperature is a cool 3548 K (the Sun is about 5770 K), while its luminosity is about 50,000 times brighter than the Sun. This must mean that it has a very large radius, in fact about 600 times larger than the solar radius! Similarly, ...
The Quest for Object X - Department of Physics and Astronomy
... What does it mean to say that an astronomer has “discovered” something? In many fields of science, discovery implies finding something that is hidden out of sight, such as digging up a fossil hidden under layers of clay, discovering the chemical structure of an enzyme, or traveling to the heart of t ...
... What does it mean to say that an astronomer has “discovered” something? In many fields of science, discovery implies finding something that is hidden out of sight, such as digging up a fossil hidden under layers of clay, discovering the chemical structure of an enzyme, or traveling to the heart of t ...
OBJXlab
... What does it mean to say that an astronomer has “discovered” something? In many fields of science, discovery implies finding something that is hidden out of sight, such as digging up a fossil hidden under layers of clay, discovering the chemical structure of an enzyme, or traveling to the heart of t ...
... What does it mean to say that an astronomer has “discovered” something? In many fields of science, discovery implies finding something that is hidden out of sight, such as digging up a fossil hidden under layers of clay, discovering the chemical structure of an enzyme, or traveling to the heart of t ...
3 - Celestial Sphere
... the ecliptic is tilted relative to the celestial equator. As the Sun appears to move across the sky, it passes through a band of constellations known as the zodiac. 3) The points on the ecliptic that intersect with the celestial equator are called equinoxes. There is a March Equinox (also known as t ...
... the ecliptic is tilted relative to the celestial equator. As the Sun appears to move across the sky, it passes through a band of constellations known as the zodiac. 3) The points on the ecliptic that intersect with the celestial equator are called equinoxes. There is a March Equinox (also known as t ...
Statistical analysis of stellar evolution
... absolute luminosity on the vertical axis and stellar surface temperature on the horizontal axis. The absolute luminosity is the luminosity that the star would have if it were 10 parsecs (32.6 light years) away as opposed to the apparent luminosity it has when viewed from Earth. It is only possible t ...
... absolute luminosity on the vertical axis and stellar surface temperature on the horizontal axis. The absolute luminosity is the luminosity that the star would have if it were 10 parsecs (32.6 light years) away as opposed to the apparent luminosity it has when viewed from Earth. It is only possible t ...
May 2017 Astronomy Calendar by Dave Mitsky
... http://www.popastro.com/meteor/activity/activity.php?id_pag=485 for additional information. Information on Iridium flares and passes of the ISS, the Tiangong-1, the USAF’s X-37B, the HST, and other satellites can be found at http://www.heavens-above.com/ The Moon is 6.2 days old, is illuminated 44.6 ...
... http://www.popastro.com/meteor/activity/activity.php?id_pag=485 for additional information. Information on Iridium flares and passes of the ISS, the Tiangong-1, the USAF’s X-37B, the HST, and other satellites can be found at http://www.heavens-above.com/ The Moon is 6.2 days old, is illuminated 44.6 ...
Riccioli Measures the Stars: Observations of the
... the stars dwarf the orbit of the Earth.* Riccioli also critiques Landsbergius who cites naked eye measurements of star sizes, including those of Tycho Brahe, that put the observed diameter of first magnitude stars at a minute (60‟‟) or greater, but who then adds that through the telescope star diam ...
... the stars dwarf the orbit of the Earth.* Riccioli also critiques Landsbergius who cites naked eye measurements of star sizes, including those of Tycho Brahe, that put the observed diameter of first magnitude stars at a minute (60‟‟) or greater, but who then adds that through the telescope star diam ...
Chapter 15, Galaxies
... We rely heavily on the standard candles for the measurement of the cosmological distance. How do we make sure that these standard candles are truly standard? ...
... We rely heavily on the standard candles for the measurement of the cosmological distance. How do we make sure that these standard candles are truly standard? ...
ppt document - FacStaff Home Page for CBU
... another? Based on the different masses of the different galaxies, it appears that they do NOT evolve from one type into another. Some of the galaxies appear to “collide” with other galaxies as they move, and such a collision may affect the shape. Some of the bigger galaxies may actually “eat” or abs ...
... another? Based on the different masses of the different galaxies, it appears that they do NOT evolve from one type into another. Some of the galaxies appear to “collide” with other galaxies as they move, and such a collision may affect the shape. Some of the bigger galaxies may actually “eat” or abs ...
Lab 7
... model of nearby space including many of the nearest stars. Of course, you will need information on where to place the stars accurately; you will need a coordinate system to specify the position of an object in space. Astronomers use the right ascension (RA) to determine the position along the celest ...
... model of nearby space including many of the nearest stars. Of course, you will need information on where to place the stars accurately; you will need a coordinate system to specify the position of an object in space. Astronomers use the right ascension (RA) to determine the position along the celest ...
Harappan Astronomy
... went through a complex evolutionary pattern (Vahia and Yadav, 2011a). It was the most advanced preiron civilisation in the world. It is no surprise, therefore, that the Harappans had a vibrant intellectual tradition. This can be seen in their art work (Vahia and Yadav, 2011b) and writing (see e.g. Y ...
... went through a complex evolutionary pattern (Vahia and Yadav, 2011a). It was the most advanced preiron civilisation in the world. It is no surprise, therefore, that the Harappans had a vibrant intellectual tradition. This can be seen in their art work (Vahia and Yadav, 2011b) and writing (see e.g. Y ...
Local Horizon View
... Local Time of Day Every star, cluster, nebula, galaxy, radio source, and quasar has a position in the night sky. All the Solar System objects - the Sun, the Moon, the other planets, asteroids, and comets have their own motion across the background of stars, so for all these objects their sky positio ...
... Local Time of Day Every star, cluster, nebula, galaxy, radio source, and quasar has a position in the night sky. All the Solar System objects - the Sun, the Moon, the other planets, asteroids, and comets have their own motion across the background of stars, so for all these objects their sky positio ...
Activities
... continuous cycle in the number of sunspots, which are the most visible tracer of the magnetic fields that cause all forms of solar activity. The solar cycle seems to be linked to changes in the Sun’s global magnetic field. At one solar activity maximum, the magnetic field is aligned so that a compas ...
... continuous cycle in the number of sunspots, which are the most visible tracer of the magnetic fields that cause all forms of solar activity. The solar cycle seems to be linked to changes in the Sun’s global magnetic field. At one solar activity maximum, the magnetic field is aligned so that a compas ...
Star Formation in the Rosette Complex
... Region. This region comprises the Mon OB1 Cloud (host of NGC 2264 and the Cone Nebula), the Monoceros Loop (NGC 2252), and the Mon OB2 Cloud in which the Rosette is one of the most prominent features (see Figure 2). The catalog name for the Rosette can be somewhat confusing because it is not unique: ...
... Region. This region comprises the Mon OB1 Cloud (host of NGC 2264 and the Cone Nebula), the Monoceros Loop (NGC 2252), and the Mon OB2 Cloud in which the Rosette is one of the most prominent features (see Figure 2). The catalog name for the Rosette can be somewhat confusing because it is not unique: ...
November, 2015 - The Baton Rouge Astronomical Society
... around other stars, by staring at 150,000 stars and recording minuscule dips in brightness. So far, Kepler hasn’t yet found an identical twin to Earth: a rocky body of similar mass, sweet with liquid water, in the “Goldilocks zone” for temperatures just right for life as we know it to evolve. In fac ...
... around other stars, by staring at 150,000 stars and recording minuscule dips in brightness. So far, Kepler hasn’t yet found an identical twin to Earth: a rocky body of similar mass, sweet with liquid water, in the “Goldilocks zone” for temperatures just right for life as we know it to evolve. In fac ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.