![Type Ia Supernovae](http://s1.studyres.com/store/data/017740340_1-94ba08bca34042930f402a9b6d3b1bbe-300x300.png)
IXO as an observatory in the large telescopes era
... have the same hard X-ray flux, their average corresponds to an intrinsic X-ray luminosity > 1043 erg s1 , and the estimated number density is even higher than that of Compton-thin AGNs at the same luminosity and redshift range. If there is a large population of such objects at cosmological redshifts ...
... have the same hard X-ray flux, their average corresponds to an intrinsic X-ray luminosity > 1043 erg s1 , and the estimated number density is even higher than that of Compton-thin AGNs at the same luminosity and redshift range. If there is a large population of such objects at cosmological redshifts ...
"Starting with Tachyon" Brochure
... append data from every imaginable object in Tachyon database. You can use “Comets”, “Asteroids” and “Other” buttons to get additional data. The second tab provides magnitude and apparent size of each planet in solar system along next 6 months. You can change planets using combobox. ...
... append data from every imaginable object in Tachyon database. You can use “Comets”, “Asteroids” and “Other” buttons to get additional data. The second tab provides magnitude and apparent size of each planet in solar system along next 6 months. You can change planets using combobox. ...
teach with space
... comet has previously approached the Sun that determine how spectacular its tail will look. Once past its closest approach to the Sun (perihelion*), the comet will retreat to the colder regions of the Solar System again, having lost some of its mass permanently. Comets have elliptical orbits with the ...
... comet has previously approached the Sun that determine how spectacular its tail will look. Once past its closest approach to the Sun (perihelion*), the comet will retreat to the colder regions of the Solar System again, having lost some of its mass permanently. Comets have elliptical orbits with the ...
starry night companion
... azimuth of your viewing direction (compasses point to “magnetic north”, which is not exactly the same as “true north”, but the two directions are practically identical unless you are observing from a far northern latitude). Once you have your bearing, it is just a matter of looking up to the proper ...
... azimuth of your viewing direction (compasses point to “magnetic north”, which is not exactly the same as “true north”, but the two directions are practically identical unless you are observing from a far northern latitude). Once you have your bearing, it is just a matter of looking up to the proper ...
The COMPLETE Survey of Star-Forming Regions
... emission and molecular lines. The combination of fully-sampled molecular line (CS) maps and 2 m images allowed for the very first statistically-significant comparison of gas properties (Lada, E.A., Bally & Stark 1991a) with those of an embedded stellar population (Lada, E.A. et al. 1991b). Lada et ...
... emission and molecular lines. The combination of fully-sampled molecular line (CS) maps and 2 m images allowed for the very first statistically-significant comparison of gas properties (Lada, E.A., Bally & Stark 1991a) with those of an embedded stellar population (Lada, E.A. et al. 1991b). Lada et ...
SherwoodWA_1973redux - Edinburgh Research Archive
... 1970; Gottesman and Davis, 1970) found that the HII regions and blue supergiants (in associations) lie within the ...
... 1970; Gottesman and Davis, 1970) found that the HII regions and blue supergiants (in associations) lie within the ...
Astrospheres and Solar-like Stellar Winds | SpringerLink
... The solar wind does not expand forever. Eventually it runs into the local interstellar medium (LISM). The interaction region between the solar wind and LISM is the subject of Section 2.3, and it is through analogous interaction regions around other stars that solar-like stellar winds can be detected ...
... The solar wind does not expand forever. Eventually it runs into the local interstellar medium (LISM). The interaction region between the solar wind and LISM is the subject of Section 2.3, and it is through analogous interaction regions around other stars that solar-like stellar winds can be detected ...
HWWS 2010 - Monash University
... • Neutron stars are sometimes found in binaries, demonstrating that the supernova blast may not always disrupt the system • Should the stellar companion subsequently evolve to fill its Roche lobe, accretion will commence (also via stellar winds) • Accreted gas is heated by liberated gravitational po ...
... • Neutron stars are sometimes found in binaries, demonstrating that the supernova blast may not always disrupt the system • Should the stellar companion subsequently evolve to fill its Roche lobe, accretion will commence (also via stellar winds) • Accreted gas is heated by liberated gravitational po ...
Night Sky III Planetary Motion Lunar Phases Astronomy 1 — Elementary Astronomy
... Suppose it is early in the month and you are going on a cruise to view a total solar eclipse later the same month. The moon is currently full. If it only takes a day or so to get to the viewing location, about when might your cruise depart? ...
... Suppose it is early in the month and you are going on a cruise to view a total solar eclipse later the same month. The moon is currently full. If it only takes a day or so to get to the viewing location, about when might your cruise depart? ...
Hot Horizontal Branch Stars in the Galactic Bulge. I
... depends primarily on its age and metallicity. At lower metallicities, a wide range in color is both found and predicted among BHB stars if modest mass loss is assumed. Among populations of solar metallicity or higher, only HB stars redder than the RR Lyrae instability strip should be produced within ...
... depends primarily on its age and metallicity. At lower metallicities, a wide range in color is both found and predicted among BHB stars if modest mass loss is assumed. Among populations of solar metallicity or higher, only HB stars redder than the RR Lyrae instability strip should be produced within ...
The Age Distribution of Potential Intelligent Life in the Milky Way
... have been the most hospitable to life and when. This GCEM incorporated interstellar gas, star formation, supernovae and metallicity. The radial component of our simulated Galaxy covered the range 2.5-15 kiloparsecs (kpc), whilst time varied from the formation of the Galaxy (~13.6 billion years ago ( ...
... have been the most hospitable to life and when. This GCEM incorporated interstellar gas, star formation, supernovae and metallicity. The radial component of our simulated Galaxy covered the range 2.5-15 kiloparsecs (kpc), whilst time varied from the formation of the Galaxy (~13.6 billion years ago ( ...
oC - Geogreenapps
... They can, therefore, be used or not, at the discretion of the teacher. To adapt the work to private learners, and to schools that cannot purchase the large maps, it is now issued with the large maps in miniature, interspersed among the leMOns. These being exact copies of the originals, though upon a ...
... They can, therefore, be used or not, at the discretion of the teacher. To adapt the work to private learners, and to schools that cannot purchase the large maps, it is now issued with the large maps in miniature, interspersed among the leMOns. These being exact copies of the originals, though upon a ...
Sun, Earth, Moon Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015
... the Sun and the distance between the Moon and Earth? The Sun’s diameter is a) smaller than the distance between the Moon and Earth. b) approximately equal to the distance between the Moon and Earth. c) larger than the distance between the Moon and Earth. ...
... the Sun and the distance between the Moon and Earth? The Sun’s diameter is a) smaller than the distance between the Moon and Earth. b) approximately equal to the distance between the Moon and Earth. c) larger than the distance between the Moon and Earth. ...
Giovanni Domenico Cassini
... Bononiensium ... (1656), a work he dedicated to Queen Christina of Sweden who was in exile in Italy at this time. His expertise, however, covered many areas other than astronomy. He was an expert in hydraulics and engineering and as such was consulted regarding the dispute of 1657 between Bologna an ...
... Bononiensium ... (1656), a work he dedicated to Queen Christina of Sweden who was in exile in Italy at this time. His expertise, however, covered many areas other than astronomy. He was an expert in hydraulics and engineering and as such was consulted regarding the dispute of 1657 between Bologna an ...
azu_etd_13224_sip1_m
... further connected the abundance of HCN versus H2 O to the growth and migration of planetesimals in the disk, which helps control the formation of both giant and terrestrial planets. I shift to an already-formed exoplanet in Chapter 4, where I present optical photometry of the best-observed transitin ...
... further connected the abundance of HCN versus H2 O to the growth and migration of planetesimals in the disk, which helps control the formation of both giant and terrestrial planets. I shift to an already-formed exoplanet in Chapter 4, where I present optical photometry of the best-observed transitin ...
Exposing the hidden white dwarf binary origin by means of a
... among the young local population of stars for stellar masses above 1.1 M . By comparison, in our first study of the single-star population (Schröder & Pagel 2003, hereafter referred to as SP2003) we only subtracted the binary systems then known from the Hipparcos catalogue. Their fraction becomes ...
... among the young local population of stars for stellar masses above 1.1 M . By comparison, in our first study of the single-star population (Schröder & Pagel 2003, hereafter referred to as SP2003) we only subtracted the binary systems then known from the Hipparcos catalogue. Their fraction becomes ...
IRAM Annual Report 2012
... way to a future facility continuum instrument. The PdBI Interferometer has produced a wide range of top-level science results ranging from very exiting investigations on galactic low mass star formation to observations in the distant universe with deep impact on the understanding of how galaxies for ...
... way to a future facility continuum instrument. The PdBI Interferometer has produced a wide range of top-level science results ranging from very exiting investigations on galactic low mass star formation to observations in the distant universe with deep impact on the understanding of how galaxies for ...
The Milky Way disk
... because population properties cannot be efficiently pinned down using such low resolution data, and this limitations cannot be any means can be compensated or alleviated by the large number of stars used. The large typical uncertainties in chemical properties clearly have the effect of smearing star ...
... because population properties cannot be efficiently pinned down using such low resolution data, and this limitations cannot be any means can be compensated or alleviated by the large number of stars used. The large typical uncertainties in chemical properties clearly have the effect of smearing star ...
Stars: HR Diagaram Stellar Evolution Astronomy 1 — Elementary Astronomy LA Mission College
... Developed by Annie Jump Cannon Characteristic absorption lines determine stellar class Note: in Astronomy “metal” means anything “heavier” than He ...
... Developed by Annie Jump Cannon Characteristic absorption lines determine stellar class Note: in Astronomy “metal” means anything “heavier” than He ...
A Search for Extrasolar Planets Using Echoes Produced in Flare
... The variable nature of stars has a long documented history. In any portion of the sky, stars can be found in various states from quiescence to obliteration. Of the myriad of observable characteristics on either short or long timescales compared to a human lifetime, a particular type of short-term va ...
... The variable nature of stars has a long documented history. In any portion of the sky, stars can be found in various states from quiescence to obliteration. Of the myriad of observable characteristics on either short or long timescales compared to a human lifetime, a particular type of short-term va ...
Spot sizes on Sun-like stars
... Doppler imaging are prone to underestimating spot areas. This is mainly because they are not very sensitive to rotationally invariant surface features, e.g. banded structures or low-level and small-scale distributed surface features. The current resolution limit of Doppler imaging is 3◦ to 5◦ in lon ...
... Doppler imaging are prone to underestimating spot areas. This is mainly because they are not very sensitive to rotationally invariant surface features, e.g. banded structures or low-level and small-scale distributed surface features. The current resolution limit of Doppler imaging is 3◦ to 5◦ in lon ...
Halley`s Comet Strikes Back!
... {{Non-free image data |Description = The nucleus of Halley's Comet, taken by the Giotto probe in 1986 |Source = http://www.esa.int/esaSC/120392_index_1_m.html#subhead6 |Portion = All |Low_resolution = Yes. 292x300 pix (free of charge for educational or ...
... {{Non-free image data |Description = The nucleus of Halley's Comet, taken by the Giotto probe in 1986 |Source = http://www.esa.int/esaSC/120392_index_1_m.html#subhead6 |Portion = All |Low_resolution = Yes. 292x300 pix (free of charge for educational or ...
International Ultraviolet Explorer
![](https://en.wikipedia.org/wiki/Special:FilePath/International_Ultraviolet_Explorer.gif?width=300)
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.