EVERYTHING YOU EVER WANTED TO KNOW ABOUT GAIA!
... for a theory which states that the Earth (including all living organisms, the biosphere, the rocks, the air, and the oceans) behaves like a living system in its own right. Now it is the name given to this ambitious project to discover the structure, origin and evolution of our ...
... for a theory which states that the Earth (including all living organisms, the biosphere, the rocks, the air, and the oceans) behaves like a living system in its own right. Now it is the name given to this ambitious project to discover the structure, origin and evolution of our ...
2012年雅思阅读考试考前冲刺试题（1）
... liquid water on its surface，and quite possibly life，although a leading scientist involved in the project said it was unlikely to find "any little green men". ...
... liquid water on its surface，and quite possibly life，although a leading scientist involved in the project said it was unlikely to find "any little green men". ...
Stars and the Milky Way
... • It is called the Milky Way because when astronomers looked up at the sky, they saw a line of light that looked like some milk had been spilt. • Stars in our Milky Way can be white, yellow or red. White stars are the hottest and red are the coolest. • It takes light over 100,000 years to travel fro ...
... • It is called the Milky Way because when astronomers looked up at the sky, they saw a line of light that looked like some milk had been spilt. • Stars in our Milky Way can be white, yellow or red. White stars are the hottest and red are the coolest. • It takes light over 100,000 years to travel fro ...
Spectra PowerPoint
... • The temperature at which the lines reach maximum strength is different for each type of atom or molecule. ...
... • The temperature at which the lines reach maximum strength is different for each type of atom or molecule. ...
black holes activity
... -The gas particles in the core and radiation zone ____________ with each other constantly but by the time it get to 200,000 km out it is turned into energy and through convection transferred towards the surface C.What is Granulation? -Looking at the surface of the Sun it looks highly _______________ ...
... -The gas particles in the core and radiation zone ____________ with each other constantly but by the time it get to 200,000 km out it is turned into energy and through convection transferred towards the surface C.What is Granulation? -Looking at the surface of the Sun it looks highly _______________ ...
Apr - Eugene Astronomical Society
... some galaxies, whatever’s up there. Oh, and I don’t want to spend too much money.” This question, from someone wanting to get their first (or first decent - or sizable) telescope can generate lots of discussion and different opinions. But the qualifier “I don’t want to spend too much money,” for mos ...
... some galaxies, whatever’s up there. Oh, and I don’t want to spend too much money.” This question, from someone wanting to get their first (or first decent - or sizable) telescope can generate lots of discussion and different opinions. But the qualifier “I don’t want to spend too much money,” for mos ...
TNO Time Allocation Committee
... data frames can be binned/combined offline to obtain a better SNR for further analysis. ...
... data frames can be binned/combined offline to obtain a better SNR for further analysis. ...
Document
... amplitudes are expected to be ≈ 10–5 → you need to go into space 3. From the ground multi-site campaigns are the most effective means of studying stellar oscillations 4. Asteroseismology it the best means of deriving the mass, radius, effective temperature, helium and heavy element fraction and inte ...
... amplitudes are expected to be ≈ 10–5 → you need to go into space 3. From the ground multi-site campaigns are the most effective means of studying stellar oscillations 4. Asteroseismology it the best means of deriving the mass, radius, effective temperature, helium and heavy element fraction and inte ...
Surveying the Stars
... •Apparent positions of the nearest stars shift by only about an arcsecond as Earth orbits the Sun, and the shift is smaller for more distant stars. •These very small angles explain why the Greeks were unable to detect parallax with their naked eyes. •This inability helped delay the acceptance of the ...
... •Apparent positions of the nearest stars shift by only about an arcsecond as Earth orbits the Sun, and the shift is smaller for more distant stars. •These very small angles explain why the Greeks were unable to detect parallax with their naked eyes. •This inability helped delay the acceptance of the ...
Early-type stars in the core of the young open cluster Westerlund 2
... were bias-subtracted, flat-fielded, sky-subtracted, wavelengthcalibrated and normalized using the software developed at ESO. The S/N ratios of the calibrated spectra ranged between 60 and 150 for the faintest and brightest sources respectively, with an average of ∼ 100 for a V = 14.5 star. Sin ...
... were bias-subtracted, flat-fielded, sky-subtracted, wavelengthcalibrated and normalized using the software developed at ESO. The S/N ratios of the calibrated spectra ranged between 60 and 150 for the faintest and brightest sources respectively, with an average of ∼ 100 for a V = 14.5 star. Sin ...
The Resounding Universe
... with space (geometry), with time (music), and both space and time (astronomy). These seven disciplines constituted the liberal arts (in that historical period, art and science, ars et scientia in latin, were synonyms) but music was the towering pillar since it encompassed the rules of metre (the rhy ...
... with space (geometry), with time (music), and both space and time (astronomy). These seven disciplines constituted the liberal arts (in that historical period, art and science, ars et scientia in latin, were synonyms) but music was the towering pillar since it encompassed the rules of metre (the rhy ...
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 ...
Poster 49 | PDF (852 kB)
... 1Utah Valley University, 2SFSU, 3Univ. of New South Wales ABSTRACT T dwarfs are the coolest and least massive compact astrophysical objects that we can directly observe outside our Solar System. They share many properties with the expanding population of known exoplanets (almost all of which are ina ...
... 1Utah Valley University, 2SFSU, 3Univ. of New South Wales ABSTRACT T dwarfs are the coolest and least massive compact astrophysical objects that we can directly observe outside our Solar System. They share many properties with the expanding population of known exoplanets (almost all of which are ina ...
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 ...
Stars - CBSD.org
... • Hipparchus decided that all the brightest stars in the night sky were “first order magnitude” stars. • As they got dimmer, he classified them as “second magnitude,” “third magnitude,” and so on… • He got up to magnitude 6, after which stars are too dim to be seen without a telescope. • So, a star’ ...
... • Hipparchus decided that all the brightest stars in the night sky were “first order magnitude” stars. • As they got dimmer, he classified them as “second magnitude,” “third magnitude,” and so on… • He got up to magnitude 6, after which stars are too dim to be seen without a telescope. • So, a star’ ...
ASTRONOMY 301 EXAMPLES OF TEST
... (A) We would see completely different kinds of objects when we look at the night sky. (B) We would see only the most energetic objects – for example, supernovae – in the night sky. (C) We would see more or less the same objects that we see now, but hotter objects would be easier to see and colder ob ...
... (A) We would see completely different kinds of objects when we look at the night sky. (B) We would see only the most energetic objects – for example, supernovae – in the night sky. (C) We would see more or less the same objects that we see now, but hotter objects would be easier to see and colder ob ...
Seeing dark matter in the Andromeda galaxy
... telescope reduced the exposure time to 1/10th that of an unaided photographic plate. It was a major step forward in telescope instrumentation. The next year Kent and I embarked on a program to measure rotation velocities in the Andromeda galaxy, M31. We hoped to determine the rotation curve—the velo ...
... telescope reduced the exposure time to 1/10th that of an unaided photographic plate. It was a major step forward in telescope instrumentation. The next year Kent and I embarked on a program to measure rotation velocities in the Andromeda galaxy, M31. We hoped to determine the rotation curve—the velo ...
The Galaxy–Dark Matter Connection
... Relation between morphology and environment revisited Environment quantified to first order by distinguishing satellite and central galaxies in the group catalogue. Morphological indicator: Concentration (=R90/R50) ...
... Relation between morphology and environment revisited Environment quantified to first order by distinguishing satellite and central galaxies in the group catalogue. Morphological indicator: Concentration (=R90/R50) ...
AST 111 – Introduction to Astronomy
... d. originated just after the telescope was invented. e. was devised by Galileo. 4. If we say that an object is 1,000 light-years away we see it a. as it looked 1,000 light-years ago. b. as it is right now, but it appears 1,000 times dimmer. c. as it looked 1,000 years ago. d. as it would appear to o ...
... d. originated just after the telescope was invented. e. was devised by Galileo. 4. If we say that an object is 1,000 light-years away we see it a. as it looked 1,000 light-years ago. b. as it is right now, but it appears 1,000 times dimmer. c. as it looked 1,000 years ago. d. as it would appear to o ...
Nebulae - Innovative Teachers BG
... Planetary Nebulae Planetary nebulae in their Photography by Emil Ivanov physical nature are different from nebulae discussed above and being essentially gas-dust clouds. Planetary nebula is an evolution phase of stars with masses 7-8 solar masses and greater. When a star forward in its evolution, l ...
... Planetary Nebulae Planetary nebulae in their Photography by Emil Ivanov physical nature are different from nebulae discussed above and being essentially gas-dust clouds. Planetary nebula is an evolution phase of stars with masses 7-8 solar masses and greater. When a star forward in its evolution, l ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.