An ultra-deep field observatory at the lunar south pole
... in space. One is the search for life on any warm, Earth-sized planets around nearby stars like the sun. We expect these will be found with smaller telescopes, but we have no idea if they will have life. On Earth, abundant life chemically transformed the atmosphere already 2 billion years ago. A big ...
... in space. One is the search for life on any warm, Earth-sized planets around nearby stars like the sun. We expect these will be found with smaller telescopes, but we have no idea if they will have life. On Earth, abundant life chemically transformed the atmosphere already 2 billion years ago. A big ...
The Science of Astronomy - Ohio Wesleyan University
... – The equator is an example of a great circle: a circle that divides a sphere into 2 equal parts (northern and southern hemisphere in this case) – For historical reasons, the exact location of the origin on the equator is due south of the former location of the Royal Observatory in Greenwich, Englan ...
... – The equator is an example of a great circle: a circle that divides a sphere into 2 equal parts (northern and southern hemisphere in this case) – For historical reasons, the exact location of the origin on the equator is due south of the former location of the Royal Observatory in Greenwich, Englan ...
analysis of eclipsing binary data - Astrophysics
... determination exercise, but the recommended epoch must be used for the preparation of light and radial velocity curves to be submitted for marking. It is suggested that a wide period range be selected initially, with a period increment chosen so that something like ten or twenty periods will be trie ...
... determination exercise, but the recommended epoch must be used for the preparation of light and radial velocity curves to be submitted for marking. It is suggested that a wide period range be selected initially, with a period increment chosen so that something like ten or twenty periods will be trie ...
EvoluGon of high mass stars Solar-‐type stars end their lives by
... finally demonstrated that the pulsars were in fact rapidly rota=ng neutron stars. The Crab nebula pulsar emits radio pulses with a period of 0.0333 seconds, indica=ng that it is rota=ng 30 =mes p ...
... finally demonstrated that the pulsars were in fact rapidly rota=ng neutron stars. The Crab nebula pulsar emits radio pulses with a period of 0.0333 seconds, indica=ng that it is rota=ng 30 =mes p ...
Isotopic composition of Hg and Pt in 5 slowly rotating HgMn stars *
... in samples of HgMn stars relied on photographic spectra, or on CCD spectra of lower resolution than our data, so that only limited information could be derived from the centroid wavelength of unresolved isotopic blends. The main purpose of the work reported here is to provide additional observationa ...
... in samples of HgMn stars relied on photographic spectra, or on CCD spectra of lower resolution than our data, so that only limited information could be derived from the centroid wavelength of unresolved isotopic blends. The main purpose of the work reported here is to provide additional observationa ...
Chapter 8 Pre-galactic enrichment of the IGM 8.1 Summary
... from pair-instability supernovae still has substantial peculiar velocities (∼ 50 km/s) at 500 pc. The metal spheres in this calculation have no initial outward peculiar velocity, which may result in a smaller volume filling factor than if this were taken into account. The second factor that strongly ...
... from pair-instability supernovae still has substantial peculiar velocities (∼ 50 km/s) at 500 pc. The metal spheres in this calculation have no initial outward peculiar velocity, which may result in a smaller volume filling factor than if this were taken into account. The second factor that strongly ...
Comparison of low- and high-mass star formation
... are evolving constantly, with mass growing (from converging or collapsing flow) and depleting (into one or more collapsed objects) at the same time. The replenishment of dense gas in the “core” is the key to the long duration of high mass accretion rate for the most massive object, which is many tim ...
... are evolving constantly, with mass growing (from converging or collapsing flow) and depleting (into one or more collapsed objects) at the same time. The replenishment of dense gas in the “core” is the key to the long duration of high mass accretion rate for the most massive object, which is many tim ...
Observational studies of stellar rotation
... and the Fourier transform of G(λ) has the interesting property of having successive zeroes at frequencies inversely proportional to v sin i (e.g., Dravins et al. 1990), with the first zero occuring at ν1 ' (2/3)(c/λo ) · (v sin i)−1 . Thus, even without the knowledge of the intrinsic line profile, t ...
... and the Fourier transform of G(λ) has the interesting property of having successive zeroes at frequencies inversely proportional to v sin i (e.g., Dravins et al. 1990), with the first zero occuring at ν1 ' (2/3)(c/λo ) · (v sin i)−1 . Thus, even without the knowledge of the intrinsic line profile, t ...
www.astro.org.uk www.facebook.com/Stra ordAstro www.twi er.com
... In its first six months in orbit, the instruments on the Van Allen Probes have worked excep:onally well and scien:sts are excited about a flood of observa:ons coming in with unprecedented clarity. This is the first :me scien:sts have been able to gather such a complete set of data about the belts, wit ...
... In its first six months in orbit, the instruments on the Van Allen Probes have worked excep:onally well and scien:sts are excited about a flood of observa:ons coming in with unprecedented clarity. This is the first :me scien:sts have been able to gather such a complete set of data about the belts, wit ...
The extreme physical properties of the CoRoT-7b super
... the stellar parameters of Bruntt et al, 2010). Its orbital period, as measured from the transit light curve, is Porb = 0.85359 ± 3 10-5 days. This short orbital period indicates that the planet is very close to its star, at 4.48 times the stellar radius from its centre (a = 0.01707 ± 0.00019 AU = 4. ...
... the stellar parameters of Bruntt et al, 2010). Its orbital period, as measured from the transit light curve, is Porb = 0.85359 ± 3 10-5 days. This short orbital period indicates that the planet is very close to its star, at 4.48 times the stellar radius from its centre (a = 0.01707 ± 0.00019 AU = 4. ...
introduction to astronomy
... This course meets the lecture portion of the lab/science general studies requirement for graduation when taken with the lab course (AST 102). This course is provided for students who cannot take the lecture and lab during the same semester. The combination of AST 101-102 is equivalent to AST 103. ...
... This course meets the lecture portion of the lab/science general studies requirement for graduation when taken with the lab course (AST 102). This course is provided for students who cannot take the lecture and lab during the same semester. The combination of AST 101-102 is equivalent to AST 103. ...
The Little Star That Could - Challenger Learning Center
... Lesson 5 Multiple Intelligence Mini-Lessons on the Solar System……………..30 Solar System Object Cards (large)…………….……………………………………………………..46 ...
... Lesson 5 Multiple Intelligence Mini-Lessons on the Solar System……………..30 Solar System Object Cards (large)…………….……………………………………………………..46 ...
Evolution of Population II Stars in the Helium
... * Present address: Mount Wilson and Palomar Observatories, California Institute of Technology, Pasadena, California, U. S. A. ...
... * Present address: Mount Wilson and Palomar Observatories, California Institute of Technology, Pasadena, California, U. S. A. ...
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... understand that stars produce light and heat, and that these quantities can be measured be familiar with graphing lines understand scientific notation in order to properly use the data chart and plot the data ...
... understand that stars produce light and heat, and that these quantities can be measured be familiar with graphing lines understand scientific notation in order to properly use the data chart and plot the data ...
Stars, Galaxies, and the Universe Section 1
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
aaswinter06
... In January 2002, the star V838 Monocerotis erupted, generating intense interest, at least partly because of the exquisite pictures taken by the Hubble Space Telescope (see the background of this poster and the color picture below) ACS showing what is interpreted as a “light echo” from the eruption ( ...
... In January 2002, the star V838 Monocerotis erupted, generating intense interest, at least partly because of the exquisite pictures taken by the Hubble Space Telescope (see the background of this poster and the color picture below) ACS showing what is interpreted as a “light echo” from the eruption ( ...
Figueira, Pont, Mordasini, Alibert, Georgy, Benz
... Depending on the exact temperature history of the formation of the initial planetary core, a certain amount of ammonia and methane can be mixed with the water. To estimate the importance of a potential enrichment in these non-water ices, we also consider a suite of models with the mixed water+ammoni ...
... Depending on the exact temperature history of the formation of the initial planetary core, a certain amount of ammonia and methane can be mixed with the water. To estimate the importance of a potential enrichment in these non-water ices, we also consider a suite of models with the mixed water+ammoni ...
Rotation, activity, and stellar obliquities in a large uniform sample of
... in solar-like stars in the open cluster M67, which is similar to the Sun in both age and metallicity, while Önehag et al. (2011) performed a differential spectroscopic analysis of a solar analog in the same cluster and found it to be nearly indistinguishable from the Sun. Together, these imply a fun ...
... in solar-like stars in the open cluster M67, which is similar to the Sun in both age and metallicity, while Önehag et al. (2011) performed a differential spectroscopic analysis of a solar analog in the same cluster and found it to be nearly indistinguishable from the Sun. Together, these imply a fun ...
celt mthr spectrometer
... Brown dwarfs and very low-mass stars in the near-IR, using molecular band heads and telluric comparison lines, thus far without success. Charbonneau’s radial velocity precision is only hundreds of m/s, huge by comparison with the typical 3-5 m/s precision of our CaliforniaCarnegie Exoplanet search o ...
... Brown dwarfs and very low-mass stars in the near-IR, using molecular band heads and telluric comparison lines, thus far without success. Charbonneau’s radial velocity precision is only hundreds of m/s, huge by comparison with the typical 3-5 m/s precision of our CaliforniaCarnegie Exoplanet search o ...