Astrobiology: young science, old questions
... ered around a Sun-like star is Gliese 581e, with a sequence after its formation (which is a relatively variability. The variable star Mira (O Ceti), for minimum mass around twice that of the Earth. quick process) and remains there for most of its example, varies in luminosity over a period As new te ...
... ered around a Sun-like star is Gliese 581e, with a sequence after its formation (which is a relatively variability. The variable star Mira (O Ceti), for minimum mass around twice that of the Earth. quick process) and remains there for most of its example, varies in luminosity over a period As new te ...
Kepler`s Search for Exoplanets
... [Lower the model so it can’t be easily seen.] Let’s pretend we have another star, and it has an exoplanet orbiting like this. [Keep exoplanet orbit vertical but change the direction of the orbit plane so that transits are visible to another section of the audience.] Who can see transits now? Again, ...
... [Lower the model so it can’t be easily seen.] Let’s pretend we have another star, and it has an exoplanet orbiting like this. [Keep exoplanet orbit vertical but change the direction of the orbit plane so that transits are visible to another section of the audience.] Who can see transits now? Again, ...
A Theory of the Origin of the Solar System There have been
... coplaner orbits of small eccentricity. This indicates that all might have been formed through the same stages of evolution. The idea may also be extended to one generation back, that is, the Sun along with its few brother stars might have been formed by the same course of evolution and at some stage ...
... coplaner orbits of small eccentricity. This indicates that all might have been formed through the same stages of evolution. The idea may also be extended to one generation back, that is, the Sun along with its few brother stars might have been formed by the same course of evolution and at some stage ...
Kindergarten Kit Manual - Alberta Science Network
... Our world often seems very large. But our planet, Earth, is actually one of the smaller planets in our solar system. All of our planets orbit the Sun, which is a fairly small star. Stars are not planets as they produce energy by converting hydrogen into helium. There are two main types of planets: r ...
... Our world often seems very large. But our planet, Earth, is actually one of the smaller planets in our solar system. All of our planets orbit the Sun, which is a fairly small star. Stars are not planets as they produce energy by converting hydrogen into helium. There are two main types of planets: r ...
Astrophysical Conditions for Planetary Habitability - Max
... water on their surfaces. This allows for the possibility that photosynthetic life might flourish there, greatly increasing productivity (Kharecha et al., 2005), and possibly producing atmospheric biosignatures that we might one day detect. From a practical standpoint, then, this means that we should ...
... water on their surfaces. This allows for the possibility that photosynthetic life might flourish there, greatly increasing productivity (Kharecha et al., 2005), and possibly producing atmospheric biosignatures that we might one day detect. From a practical standpoint, then, this means that we should ...
Galaxies, stars and planets
... and contains materials with a range of properties that far exceeds anything that can be replicated in laboratories on the Earth. Temperatures range from close to absolute zero (−273.15 ºC) in dense clouds of gas and dust from which stars form, up to many millions of degrees in the interiors of stars ...
... and contains materials with a range of properties that far exceeds anything that can be replicated in laboratories on the Earth. Temperatures range from close to absolute zero (−273.15 ºC) in dense clouds of gas and dust from which stars form, up to many millions of degrees in the interiors of stars ...
Powerpoint file
... Short period M dwarfs are very active and we would have seen Ca II emission from the binary stars and X-ray emission ...
... Short period M dwarfs are very active and we would have seen Ca II emission from the binary stars and X-ray emission ...
Teachers` Manual - Amundsen High School
... Structure of Atoms (nucleus and orbiting electrons) The Elements (number of protons in nucleus determines kind of element) Atoms store energy by lifting electrons to higher orbits Return of electron to lower orbit releases energy which appears as light (or more generally, electromagnetic radiation) ...
... Structure of Atoms (nucleus and orbiting electrons) The Elements (number of protons in nucleus determines kind of element) Atoms store energy by lifting electrons to higher orbits Return of electron to lower orbit releases energy which appears as light (or more generally, electromagnetic radiation) ...
Herbig Ae/Be Stars
... The negative sign indicates that a decrease in the total stellar energy results in positive luminosity • By the virial theorem half of the gravitational potential energy is converted into thermal energy and half is radiated ...
... The negative sign indicates that a decrease in the total stellar energy results in positive luminosity • By the virial theorem half of the gravitational potential energy is converted into thermal energy and half is radiated ...
FROM MOLECULAR CLOUDS TO STARS 1 Star formation and the
... Fig. 7 shows the distribution of line widths observed in dense cores with and without sources detected by the Infrared Astronomical Satellite (IRAS). Cores with new formed stars, detected as infrared sources, have larger line widths (that can not be explained by temperature changes, nearly equal in ...
... Fig. 7 shows the distribution of line widths observed in dense cores with and without sources detected by the Infrared Astronomical Satellite (IRAS). Cores with new formed stars, detected as infrared sources, have larger line widths (that can not be explained by temperature changes, nearly equal in ...
Herschel
... the Solar System placed beyond the orbit of Neptune (30 UA) up to ~55 UA. It is similar to the asteroid belt but 20 times wider and 20-200 times more massive. ...
... the Solar System placed beyond the orbit of Neptune (30 UA) up to ~55 UA. It is similar to the asteroid belt but 20 times wider and 20-200 times more massive. ...
PSU/TCfA search for planets around evolved stars
... Searches for planets around massive stars are essential for developing general understanding of planet formation and evolution of the planetary systems. The main objective of the PSU-TCfA Search for Planets Around Evolved Stars is detection of planets around G-K subgiants and giants through precisio ...
... Searches for planets around massive stars are essential for developing general understanding of planet formation and evolution of the planetary systems. The main objective of the PSU-TCfA Search for Planets Around Evolved Stars is detection of planets around G-K subgiants and giants through precisio ...
ph507rev1
... parallax accuracy to 0.001” within a few years. Before 1990, fewer than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 1012 stars in our Galaxy. Space observations made by the European Space Agency with the Hipparcos mission (1989-1993) accurately determin ...
... parallax accuracy to 0.001” within a few years. Before 1990, fewer than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 1012 stars in our Galaxy. Space observations made by the European Space Agency with the Hipparcos mission (1989-1993) accurately determin ...
click here - CAPSTONE 2011
... • Roughly speaking, kT for a gas can be 1/10 of the value of the ionization potential considered and still produce ionization. kT =1 eV for gas at 10,000 oK, and yet there are enough high energy electrons to ionize H (13.6 eV). ...
... • Roughly speaking, kT for a gas can be 1/10 of the value of the ionization potential considered and still produce ionization. kT =1 eV for gas at 10,000 oK, and yet there are enough high energy electrons to ionize H (13.6 eV). ...
MAPPING THE SOLAR SYSTEM
... him as the premiere astonomer of his day. He let Kepler see only part of his voluminous data. Two days after Tycho's death, Kepler was appointed his successor as imperial mathematician. He inherited Tycho's observations as well as the responsibility to complete his unfinished work. ...
... him as the premiere astonomer of his day. He let Kepler see only part of his voluminous data. Two days after Tycho's death, Kepler was appointed his successor as imperial mathematician. He inherited Tycho's observations as well as the responsibility to complete his unfinished work. ...
Galactic Evolution:
... Milky Way, thus, planetary systems forming in other locations and times in the Milky Way with the same metallicity as the Sun will not necessarily form habitable Earth like planets. As a result of the radial Galactic metafficity gradient, the outer limit of the GHZ is set primarily by the minimum re ...
... Milky Way, thus, planetary systems forming in other locations and times in the Milky Way with the same metallicity as the Sun will not necessarily form habitable Earth like planets. As a result of the radial Galactic metafficity gradient, the outer limit of the GHZ is set primarily by the minimum re ...
Kepler-452b is not a new Earth A twin of the Sun
... overall much more extended into space than previously thought: 1,600 km instead of 270 km. This new measurement is the result of a Sun-Pluto-spacecraft alignment, carefully planned in order to backlit its atmosphere to investigate it better. Observations made with the Solar Wind Around Pluto instrum ...
... overall much more extended into space than previously thought: 1,600 km instead of 270 km. This new measurement is the result of a Sun-Pluto-spacecraft alignment, carefully planned in order to backlit its atmosphere to investigate it better. Observations made with the Solar Wind Around Pluto instrum ...
Spring 2017 - Astronomers of Humboldt
... one commemorated the 50th anniversary of the incorporation of AOH. It is our hope that this year’s Potluck will mark the beginning of many more potlucks to come. It was an enjoyable evening with new and veteran members coming together for fellowship and good food. We were fortunate to enlist HSU Pro ...
... one commemorated the 50th anniversary of the incorporation of AOH. It is our hope that this year’s Potluck will mark the beginning of many more potlucks to come. It was an enjoyable evening with new and veteran members coming together for fellowship and good food. We were fortunate to enlist HSU Pro ...
student instruction and answer sheet
... orbiting planet. 90% of the stars in our galaxy are too cool to have a sizable habitable zone. This eliminates stars with spectral type K5 and cooler. Of the remaining 10%, nearly a quarter of those have lifetimes too short for life to develop. This eliminates stars warmer with spectral type F8 and ...
... orbiting planet. 90% of the stars in our galaxy are too cool to have a sizable habitable zone. This eliminates stars with spectral type K5 and cooler. Of the remaining 10%, nearly a quarter of those have lifetimes too short for life to develop. This eliminates stars warmer with spectral type F8 and ...
Transiting exoplanets from the CoRoT space mission
... HARPS data set. Figure 8 shows a significant sample of the HARPS spectrum used for this analysis. By comparing the spectra with a grid of stellar templates, as described in Frasca et al. (2003) and Gandolfi et al. (2008), or using SME (Valenti & Piskunov 1996), we derived the spectral type and lumin ...
... HARPS data set. Figure 8 shows a significant sample of the HARPS spectrum used for this analysis. By comparing the spectra with a grid of stellar templates, as described in Frasca et al. (2003) and Gandolfi et al. (2008), or using SME (Valenti & Piskunov 1996), we derived the spectral type and lumin ...
an all-sky extrasolar planet survey with multiple object, dispersed
... ASEPS visible-wavelength survey has the sensitivity to detect giant planets at Jupiter-like distances (5 AU) from parent stars with V < 11. The nearinfrared survey will focus on infrared-bright M stars and may lead to discoveries of super-Earth-mass planets (∼10 Earth masses) in the habitable zones ...
... ASEPS visible-wavelength survey has the sensitivity to detect giant planets at Jupiter-like distances (5 AU) from parent stars with V < 11. The nearinfrared survey will focus on infrared-bright M stars and may lead to discoveries of super-Earth-mass planets (∼10 Earth masses) in the habitable zones ...
Astro 10B Study Questions for Each Chapter
... What is the temperature and density of a HII region? What is the temperature and density of a Molecular. Cloud? What is the temperature and density of the Ultra Hot Gas? How are Molecules and Dust inter-related? What is ‘interstellar extinction’? What is ‘reddening’? Why does dust block visible ligh ...
... What is the temperature and density of a HII region? What is the temperature and density of a Molecular. Cloud? What is the temperature and density of the Ultra Hot Gas? How are Molecules and Dust inter-related? What is ‘interstellar extinction’? What is ‘reddening’? Why does dust block visible ligh ...
Tips on taking Astro sights
... If two position lines are obtained at approximately the same moment, the ship's position is decided by their point of intersection. If there is an appreciable interval between the times at which they are obtained, the first position line must be 'run on' to allow for the distance that the ship cover ...
... If two position lines are obtained at approximately the same moment, the ship's position is decided by their point of intersection. If there is an appreciable interval between the times at which they are obtained, the first position line must be 'run on' to allow for the distance that the ship cover ...
Planetary system
A planetary system is a set of gravitationally bound non-stellar objects in orbit around a star or star system. Generally speaking, systems with one or more planets constitute a planetary system, although such systems may also consist of bodies such as dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals and circumstellar disks. The Sun together with its planetary system, which includes Earth, is known as the Solar System. The term exoplanetary system is sometimes used in reference to other planetary systems.A total of 1968 exoplanets (in 1248 planetary systems, including 490 multiple planetary systems) have been identified as of 1 October 2015.Of particular interest to astrobiology is the habitable zone of planetary systems where planets could have surface liquid water.