Kepler423b: a half-Jupiter mass planet transiting a very old solar
... the current photospheric metallicity of Kepler-423. We derived a mass of M? = 0.85 ± 0.04 M a radius of R? = 0.95 ± 0.04 R and an age of t = 11 ± 2 Gyr (Table 5). Mass and radius imply a surface gravity of log g = 4.41 ± 0.04 (log10 cm s−2 ), which agrees with the spectroscopically derived value l ...
... the current photospheric metallicity of Kepler-423. We derived a mass of M? = 0.85 ± 0.04 M a radius of R? = 0.95 ± 0.04 R and an age of t = 11 ± 2 Gyr (Table 5). Mass and radius imply a surface gravity of log g = 4.41 ± 0.04 (log10 cm s−2 ), which agrees with the spectroscopically derived value l ...
Giuseppe Piazzi and the Discovery of Ceres
... at that time (derived from Burckhardt’s ellipse) were not accurate enough to mount an effective search. In fact, the problem with which astronomers and mathematicians were confronted was “to determine the orbit of a celestial body, without making any hypothesis, from observations covering a space ne ...
... at that time (derived from Burckhardt’s ellipse) were not accurate enough to mount an effective search. In fact, the problem with which astronomers and mathematicians were confronted was “to determine the orbit of a celestial body, without making any hypothesis, from observations covering a space ne ...
The Sun and How to Observe It For further volumes: www.springer.com/series/5338
... buffs a look into the how and why of techniques used for observing the Sun. Baxter carefully painted a picture of how an amateur astronomer, using only a modest telescope, sketch pad, and sheet film camera, could leisurely record solar activity. Over the years a number of devotees, including myself, ...
... buffs a look into the how and why of techniques used for observing the Sun. Baxter carefully painted a picture of how an amateur astronomer, using only a modest telescope, sketch pad, and sheet film camera, could leisurely record solar activity. Over the years a number of devotees, including myself, ...
1920 - Lunar and Planetary Institute
... increasing interest due to the launch of the Dawn mission, we undertook such a study. Observations: We obtained spectra of Ceres using the NASA Infrared Telescope Facility (IRTF) on 17 and 18 May 2005. We used SpeX, the facility spectrograph, in long-wave cross-dispersed (LXD) mode, covering 1.9—4.1 ...
... increasing interest due to the launch of the Dawn mission, we undertook such a study. Observations: We obtained spectra of Ceres using the NASA Infrared Telescope Facility (IRTF) on 17 and 18 May 2005. We used SpeX, the facility spectrograph, in long-wave cross-dispersed (LXD) mode, covering 1.9—4.1 ...
Sensor Introduction
... Microwave scatterometers are classified as two types, pulse type and continuous wave type (CW). The pulse type uses wide band which has restrictions in obtaining a license to operate and in avoid obstructions. CW type has the advantage that the band width can be reduced to 1/100 times that of the pu ...
... Microwave scatterometers are classified as two types, pulse type and continuous wave type (CW). The pulse type uses wide band which has restrictions in obtaining a license to operate and in avoid obstructions. CW type has the advantage that the band width can be reduced to 1/100 times that of the pu ...
WELCOME TO THE MILKY WAY
... Globulars are generally made up of Population II stars. Population I stars are said to have a higher metallicity than Population II stars. In astronomy, all elements heavier than helium are called metals. The metallicity is a measure of the age of a star. In the early evolution of the Milky Way, the ...
... Globulars are generally made up of Population II stars. Population I stars are said to have a higher metallicity than Population II stars. In astronomy, all elements heavier than helium are called metals. The metallicity is a measure of the age of a star. In the early evolution of the Milky Way, the ...
acc
... The sheep-sg saw the fish-sg. The sheep-pl saw the fish-sg. The sheep-sg saw the fish-pl. The sheep-pl saw the fish-pl. ...
... The sheep-sg saw the fish-sg. The sheep-pl saw the fish-sg. The sheep-sg saw the fish-pl. The sheep-pl saw the fish-pl. ...
Free floating planets
... Understanding how the transiting planet mass-radius relations change as a function of orbital distance, stellar mass, stellar metallicity, or UV flux, will provide insight into the fundamentals of planetary formation, migration, and evolution. The transit method of planet detection is biased toward ...
... Understanding how the transiting planet mass-radius relations change as a function of orbital distance, stellar mass, stellar metallicity, or UV flux, will provide insight into the fundamentals of planetary formation, migration, and evolution. The transit method of planet detection is biased toward ...
THE HERTZSPRUNG-RUSSELL DIAGRAM
... power output, but in terms of stellar evolution they are not the same—red giant stars are fusing hydrogen to helium in a shell around an inert helium core, whereas red clump stars are fusing helium to carbon inside the core. The HR diagram to the left is for a cluster in the Large Magellanic Cloud w ...
... power output, but in terms of stellar evolution they are not the same—red giant stars are fusing hydrogen to helium in a shell around an inert helium core, whereas red clump stars are fusing helium to carbon inside the core. The HR diagram to the left is for a cluster in the Large Magellanic Cloud w ...
Automated Detection and Analysis of Meteor Events Using Nightly
... found a calibration by hand. I would look at the image and find stars then compare them to stars found in XEphem, a night sky program. The calibrations found by hand were the same as the ones my program found. These results are more accurate because each individual event gets a calibration. The old ...
... found a calibration by hand. I would look at the image and find stars then compare them to stars found in XEphem, a night sky program. The calibrations found by hand were the same as the ones my program found. These results are more accurate because each individual event gets a calibration. The old ...
Epsilon Aurigae: a rare stellar eclipse - Project VS
... Flat-bottomed eclipses of 2-years duration and their depth (2.9 to 3.8) optically suggest that the cold disk covers half the surface area of the F star (Huang 1965). A lot of information was collected during the eclipse of 1982 -1984. At the end of the campaign, in 1985 a workshop was held at the Am ...
... Flat-bottomed eclipses of 2-years duration and their depth (2.9 to 3.8) optically suggest that the cold disk covers half the surface area of the F star (Huang 1965). A lot of information was collected during the eclipse of 1982 -1984. At the end of the campaign, in 1985 a workshop was held at the Am ...
The science case for - Astrophysics
... Adaptive Optics (AO) correction that results in the majority of the light falling inside a 0.1 arcsec aperture, a 100m telescope would give a gain of 4.5 magnitudes for point sources compared to an 8m telescope producing 0.5 arcsec images, a factor of 60 in intensity (see Table 2.1). ...
... Adaptive Optics (AO) correction that results in the majority of the light falling inside a 0.1 arcsec aperture, a 100m telescope would give a gain of 4.5 magnitudes for point sources compared to an 8m telescope producing 0.5 arcsec images, a factor of 60 in intensity (see Table 2.1). ...
Document
... 1. The seasonal changes associated with the tilt would disappear. Every part of Earth would have 12-hour days and nights, but the equatorial regions would still have the most direct sunlight and be hottest. There would be very little temperature change during the year, although it would generally be ...
... 1. The seasonal changes associated with the tilt would disappear. Every part of Earth would have 12-hour days and nights, but the equatorial regions would still have the most direct sunlight and be hottest. There would be very little temperature change during the year, although it would generally be ...
INTERSTELLAR MedLab
... INTERSTELLAR MEDIUM LABORATORY The purpose of this lab is to familiarize you with the many different forms of the material between the stars. This material is referred to as the “interstellar medium” and is the source of many of the most beautiful objects in the sky. INTRODUCTION When astronomers tu ...
... INTERSTELLAR MEDIUM LABORATORY The purpose of this lab is to familiarize you with the many different forms of the material between the stars. This material is referred to as the “interstellar medium” and is the source of many of the most beautiful objects in the sky. INTRODUCTION When astronomers tu ...
Globular Clusters
... to internal and external dynamical interactions, they represent an ideal workbench to study STELLAR DYNAMICS and to test most exquisite theoretical dynamical models. If studied as a global system, GCs constitute fossil tracers of the dynamical and chemical evolution of the parent galaxy and can be u ...
... to internal and external dynamical interactions, they represent an ideal workbench to study STELLAR DYNAMICS and to test most exquisite theoretical dynamical models. If studied as a global system, GCs constitute fossil tracers of the dynamical and chemical evolution of the parent galaxy and can be u ...
SciPoster_Jan2009
... that could contain regions of active star formation within them; both are associated with IRAS sources, and based on prior shallow surveys, they both have a YSO candidate in the neighborhood. Spitzer observations with IRAC and MIPS allowed us to see deep inside the cloud, deeper than any prior obser ...
... that could contain regions of active star formation within them; both are associated with IRAS sources, and based on prior shallow surveys, they both have a YSO candidate in the neighborhood. Spitzer observations with IRAC and MIPS allowed us to see deep inside the cloud, deeper than any prior obser ...
Document
... and Charon as distinct and separated objects for the first time, and they can now be viewed individually by telescopes on Mauna Kea in Hawaii (see figure, top) and elsewhere where the “seeing” is exceptional. The latest Hubble views show that Pluto has a dozen areas of bright and dark, the finest de ...
... and Charon as distinct and separated objects for the first time, and they can now be viewed individually by telescopes on Mauna Kea in Hawaii (see figure, top) and elsewhere where the “seeing” is exceptional. The latest Hubble views show that Pluto has a dozen areas of bright and dark, the finest de ...
PDF - WM Keck Observatory
... the observatories do not pay rent, the real investment comes in the form of telescope time each observatory provides to the University of Hawai‘i (UH) for the use of the land. For Keck Observatory ...
... the observatories do not pay rent, the real investment comes in the form of telescope time each observatory provides to the University of Hawai‘i (UH) for the use of the land. For Keck Observatory ...
How Mira Variables Change Visual Light by a Thousand-fold
... the large amplitude of Mira variables may be reduced to finding a source of visual opacity sufficient to make the star appear 80% larger than the stellar size at minimum light, while remaining close the stellar size at maximum light. In order to accomplish this, the opacity in the stellar atmosphere ...
... the large amplitude of Mira variables may be reduced to finding a source of visual opacity sufficient to make the star appear 80% larger than the stellar size at minimum light, while remaining close the stellar size at maximum light. In order to accomplish this, the opacity in the stellar atmosphere ...
Stellar Magnetic Activity
... Magnetic heating (non-radiative) causes the temperature to rise to a plateau near 7000K (chromosphere); density falls by orders of magnitude Plateau results from a balance between magnetic heating and radiative cooling from collisionally excited Ha, Ca II K, Mg II k – the principal diagnostic lines ...
... Magnetic heating (non-radiative) causes the temperature to rise to a plateau near 7000K (chromosphere); density falls by orders of magnitude Plateau results from a balance between magnetic heating and radiative cooling from collisionally excited Ha, Ca II K, Mg II k – the principal diagnostic lines ...
PHYS_3380_082615_bw - The University of Texas at Dallas
... second magnitude class, until all of the visible stars grouped into six magnitude classes. The dimmest stars were of sixth magnitude. - therefore based on how bright a star appeared to the unaided eye. By 19th century technology developed to objectively measure a star's brightness magnitude system r ...
... second magnitude class, until all of the visible stars grouped into six magnitude classes. The dimmest stars were of sixth magnitude. - therefore based on how bright a star appeared to the unaided eye. By 19th century technology developed to objectively measure a star's brightness magnitude system r ...
Gravity: Realitat o Ficció
... • It is a scenario in which the density of objects in Low Earth Orbit (LEO) is ...
... • It is a scenario in which the density of objects in Low Earth Orbit (LEO) is ...
A Stars
... • From Wien’s Law, we expect: – hotter stars appear BLUE (T=10,000-50,000 K) – middle stars appear YELLOW (T~6000K) – cool stars appear RED (T~3000K) ASTR111 Lecture 13 ...
... • From Wien’s Law, we expect: – hotter stars appear BLUE (T=10,000-50,000 K) – middle stars appear YELLOW (T~6000K) – cool stars appear RED (T~3000K) ASTR111 Lecture 13 ...
1 Introduction - High Point University
... Stars may be split up even more than just into Giants, Dwarfs, and Main Sequence stars. The spectral class of a star is closely related to its temperature. This class is actually determined by the lines in the star’s spectrum, which are heavily dependent on temperature. Spectral classification can p ...
... Stars may be split up even more than just into Giants, Dwarfs, and Main Sequence stars. The spectral class of a star is closely related to its temperature. This class is actually determined by the lines in the star’s spectrum, which are heavily dependent on temperature. Spectral classification can p ...
Astonomy-Space The Final Frontier
... Explain how Kepler’s laws allow us to construct a scale model of the solar system, and explain the technique used to determine the actual size of the planetary orbits. Be able to state Newton’s laws of gravitation and explain how they account for Kepler’s laws. Explain how the law of gravitati ...
... Explain how Kepler’s laws allow us to construct a scale model of the solar system, and explain the technique used to determine the actual size of the planetary orbits. Be able to state Newton’s laws of gravitation and explain how they account for Kepler’s laws. Explain how the law of gravitati ...
International Ultraviolet Explorer
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.