Introduction
... Pondering on the existence of worlds other than our own has always piqued human interest. There have been centuries of speculation on whether our planet, the Earth, and our planetary system, the Solar System, were ones of many. As early as the 3rd century B.C., Epicurus (341-270 B.C.) said “There ar ...
... Pondering on the existence of worlds other than our own has always piqued human interest. There have been centuries of speculation on whether our planet, the Earth, and our planetary system, the Solar System, were ones of many. As early as the 3rd century B.C., Epicurus (341-270 B.C.) said “There ar ...
Sec 30.1 - Highland High School
... After reasoning there were globular clusters orbiting the center of the Milky Way, astronomers then used RR Lyrae variables to determine the distances to them. ...
... After reasoning there were globular clusters orbiting the center of the Milky Way, astronomers then used RR Lyrae variables to determine the distances to them. ...
Astronomy 140 Lecture Notes, Spring 2008 c
... for Fλ , or in Janskies: 1 Jy = 10−26 W/m2 /Hz = 10−23 erg/cm2 /sec/Hz. To actually determine the 0th magnitude flux F◦ is quite difficult, since it requires the comparison of a star with a laboratory standard light source. Stars are much fainter and hotter than lab standards, and are also much furt ...
... for Fλ , or in Janskies: 1 Jy = 10−26 W/m2 /Hz = 10−23 erg/cm2 /sec/Hz. To actually determine the 0th magnitude flux F◦ is quite difficult, since it requires the comparison of a star with a laboratory standard light source. Stars are much fainter and hotter than lab standards, and are also much furt ...
an introduction to astrophysics
... recalled that they comprise two parts: a numerical value and an appropriate unit of measurement, such as m = 3.4 kg or x = 6.0 m. The units will generally be internationally recognized SI units, although in astrophysics and cosmology, cgs units and other less conventional units are used where conven ...
... recalled that they comprise two parts: a numerical value and an appropriate unit of measurement, such as m = 3.4 kg or x = 6.0 m. The units will generally be internationally recognized SI units, although in astrophysics and cosmology, cgs units and other less conventional units are used where conven ...
File 11 - School of Astronomy, IPM
... • Based on photographic images in the blue emphasises star formation (not mass distribution) High z galaxies sample the rest frame UV. • Requires reasonably good spatial resolution across the galaxy ( 20 elements) progressively more difficult for cz > 8000 km/s from ground. To summarise, three kinds ...
... • Based on photographic images in the blue emphasises star formation (not mass distribution) High z galaxies sample the rest frame UV. • Requires reasonably good spatial resolution across the galaxy ( 20 elements) progressively more difficult for cz > 8000 km/s from ground. To summarise, three kinds ...
Module 7 Lesson 3 Notes Part 1 Hyperbolas
... What’s the big deal about the foci? Pick a point on the hyperbola you’ve drawn. Mark it with a star. Measure the distance from the star to one of the foci. Record that number. Now measure the distance from the star to the other foci. Record that number. This time, however, subtract those two number ...
... What’s the big deal about the foci? Pick a point on the hyperbola you’ve drawn. Mark it with a star. Measure the distance from the star to one of the foci. Record that number. Now measure the distance from the star to the other foci. Record that number. This time, however, subtract those two number ...
Module 7: Conics Lesson 3 Notes Part 1 Hyperbola Hyperbola
... On a piece of graph paper, follow along with these steps: First, we locate the Center of the hyperbola. Again, we find the center in the same fashion as that of a circle. The center is (h, k). Here, since there aren’t any values for ‘h’ or ‘k’ (notice the ‘x’ and ‘y’ are by themselves), those values ...
... On a piece of graph paper, follow along with these steps: First, we locate the Center of the hyperbola. Again, we find the center in the same fashion as that of a circle. The center is (h, k). Here, since there aren’t any values for ‘h’ or ‘k’ (notice the ‘x’ and ‘y’ are by themselves), those values ...
Galaxies
... Galaxy mass measurements show that galaxies need between 3 and 10 times more mass than can be observed to explain their rotation curves. The discrepancy is even larger in galaxy clusters, which need 10 to 100 times more mass. The total needed is more than the sum of the dark matter associated with e ...
... Galaxy mass measurements show that galaxies need between 3 and 10 times more mass than can be observed to explain their rotation curves. The discrepancy is even larger in galaxy clusters, which need 10 to 100 times more mass. The total needed is more than the sum of the dark matter associated with e ...
Habitable Zone Lifetimes of Exoplanets around Main Sequence Stars
... time or space, and its boundaries migrate outward at a rate proportional to the increase in luminosity of a star undergoing stellar evolution, possibly including or excluding planets over the course of the star’s main sequence lifetime. We describe the time that a planet spends within the HZ as its ...
... time or space, and its boundaries migrate outward at a rate proportional to the increase in luminosity of a star undergoing stellar evolution, possibly including or excluding planets over the course of the star’s main sequence lifetime. We describe the time that a planet spends within the HZ as its ...
Constraints on a Chance Universe & The Anthropic Principle
... ne - the fraction of planets in a star’s AHZ The fraction of planets in a star’s habitable zone can be reasonably estimated from our own solar system. If we take the sun’s HZ to be 1.0 AU 0.3 AU in a solar system ranging out to more than 40 AU, we can estimate the fraction as 1.3/40 or ~ 0.027. H ...
... ne - the fraction of planets in a star’s AHZ The fraction of planets in a star’s habitable zone can be reasonably estimated from our own solar system. If we take the sun’s HZ to be 1.0 AU 0.3 AU in a solar system ranging out to more than 40 AU, we can estimate the fraction as 1.3/40 or ~ 0.027. H ...
McDonald I....Tisserand, P. et al ExELS an
... survey would be slightly increased from the values in Paper I, while colour data from lensing events would constrain properties of many more lower mass free-floating planets. One hour is currently the maximum allowed by the agreed telemetry rate. Secondary masses: We consider an upper limit of 0.3 M ...
... survey would be slightly increased from the values in Paper I, while colour data from lensing events would constrain properties of many more lower mass free-floating planets. One hour is currently the maximum allowed by the agreed telemetry rate. Secondary masses: We consider an upper limit of 0.3 M ...
Characterization of the four new transiting planets KOI
... orbital periods of 3.8 and 3.2 days, and masses of 0.25 and 0.34 MJup . They are located in the low-mass range of known transiting, giant planets. KOI-192b has a similar mass (0.29 MJup ) but a longer orbital period of 10.3 days. This places it in a domain where only a few planets are known. KOI-830 ...
... orbital periods of 3.8 and 3.2 days, and masses of 0.25 and 0.34 MJup . They are located in the low-mass range of known transiting, giant planets. KOI-192b has a similar mass (0.29 MJup ) but a longer orbital period of 10.3 days. This places it in a domain where only a few planets are known. KOI-830 ...
allowed planetary orbits
... Hence, we pass to theories of the origin of the solar system and demonstrations of the chaotic dynamics and planetary migration, which at present lead to new theories of the origin of the solar system and exoplanets. We provide a review of the quantization on a cosmic scale and its application to de ...
... Hence, we pass to theories of the origin of the solar system and demonstrations of the chaotic dynamics and planetary migration, which at present lead to new theories of the origin of the solar system and exoplanets. We provide a review of the quantization on a cosmic scale and its application to de ...
Ellipticity, Its Origin and Progression in Comoving Galaxies
... A remarkable 2009 paper [6] entitled, “The Story of Gravity and Lambda —How the Theory of Heraclitus Solved the Dark Matter Mystery,” convincingly argues that hypothetical mystery matter (alias dark matter) is entirely unnecessary within a stably cellularly-structure universe. The paper [7] “The Pro ...
... A remarkable 2009 paper [6] entitled, “The Story of Gravity and Lambda —How the Theory of Heraclitus Solved the Dark Matter Mystery,” convincingly argues that hypothetical mystery matter (alias dark matter) is entirely unnecessary within a stably cellularly-structure universe. The paper [7] “The Pro ...
3D Tour of the Universe Template
... regions, resulting in the formation of new young stars. As is common in these kinds of encounters, spiral structure was induced in the more massive galaxy. M51 is an easily found astronomical showpiece if the sky is dark, where suggestions of its spiral arms may be visible. As is also common with th ...
... regions, resulting in the formation of new young stars. As is common in these kinds of encounters, spiral structure was induced in the more massive galaxy. M51 is an easily found astronomical showpiece if the sky is dark, where suggestions of its spiral arms may be visible. As is also common with th ...
24.1 Hubble`s Galaxy Classification
... In hindsight this makes sense, since faster rotation means more galaxy mass, means (on average) a more luminous galaxy. In the example below the Galaxy is spatially resolved, but you could get this from the width of a spectral line if you couldn’t resolve the galaxy. This galaxy is NGC 4603, about 3 ...
... In hindsight this makes sense, since faster rotation means more galaxy mass, means (on average) a more luminous galaxy. In the example below the Galaxy is spatially resolved, but you could get this from the width of a spectral line if you couldn’t resolve the galaxy. This galaxy is NGC 4603, about 3 ...
The size and shape of the Milky Way disc and halo from M
... may be much lower (e.g. as the product of multiple star system ejection mechanisms). At a fiducial distance of 10 kpc, the 0.1 arcsec point spread function of WFC3, would only be able to resolve a binary with 1 kAU separation. Therefore, we assume that each star identified here is a single M-dwarf. ...
... may be much lower (e.g. as the product of multiple star system ejection mechanisms). At a fiducial distance of 10 kpc, the 0.1 arcsec point spread function of WFC3, would only be able to resolve a binary with 1 kAU separation. Therefore, we assume that each star identified here is a single M-dwarf. ...
Galaxy Powerpoint Notes
... The creation of galaxies is a very mysterious topic as it is uncertain of how the universe was created. The most common theory however, is the theory of the Big Bang, which states that the universe expanded from a very dense state and continues to expand today. Another common prediction of how galax ...
... The creation of galaxies is a very mysterious topic as it is uncertain of how the universe was created. The most common theory however, is the theory of the Big Bang, which states that the universe expanded from a very dense state and continues to expand today. Another common prediction of how galax ...
A Compilation of Relevant Articles from MMM`s first 25 years, issues
... the Full Moon, or some 10,000 times brighter than Sirius. To receive only as much sunlight as Earth does, a planet would have to orbit Deneb or Rigel more than 8 times farther out than Neptune from the Sun! In our corner of the Galaxy, F+ Deneb, Rigel, and Canopus dominate all the space within 2,000 ...
... the Full Moon, or some 10,000 times brighter than Sirius. To receive only as much sunlight as Earth does, a planet would have to orbit Deneb or Rigel more than 8 times farther out than Neptune from the Sun! In our corner of the Galaxy, F+ Deneb, Rigel, and Canopus dominate all the space within 2,000 ...
Kepler Mission Workshop Presentation
... The photometer is composed of just one "instrument," which is, an array of 42 CCDs (charge coupled devices). Each 50x25 mm CCD has 2200x1024 pixels. The CCDs are not used to take pictures. The images are intentionally defocused to improve the photometric precision. ...
... The photometer is composed of just one "instrument," which is, an array of 42 CCDs (charge coupled devices). Each 50x25 mm CCD has 2200x1024 pixels. The CCDs are not used to take pictures. The images are intentionally defocused to improve the photometric precision. ...
Collisions and Encounters of Stellar Systems
... galaxy are contained within a radius R ≈ 10 kpc, so the collision cross-section between two such galaxies is Σ ≈ π(2R)2 . If the positions and velocities of the galaxies are uncorrelated, the rate at which an L! galaxy suffers collisions with similar galaxies is then expected to be of order nΣvp ≈ 1 ...
... galaxy are contained within a radius R ≈ 10 kpc, so the collision cross-section between two such galaxies is Σ ≈ π(2R)2 . If the positions and velocities of the galaxies are uncorrelated, the rate at which an L! galaxy suffers collisions with similar galaxies is then expected to be of order nΣvp ≈ 1 ...
Untitled
... From what is understood about our known universe is that, it may be infinitely large and the one that we are familiar with might as well be one of many universes that are possibly our there in the vast regions of space and time. So life would pop up only on planet Earth and no where else in this mas ...
... From what is understood about our known universe is that, it may be infinitely large and the one that we are familiar with might as well be one of many universes that are possibly our there in the vast regions of space and time. So life would pop up only on planet Earth and no where else in this mas ...