Searching for Planets Around Other Stars
... In our Solar System, the planetary orbits have low eccentricities (with the exception of Pluto). This is a natural consequence of planet formation. This is what we expected for other planetary systems. ...
... In our Solar System, the planetary orbits have low eccentricities (with the exception of Pluto). This is a natural consequence of planet formation. This is what we expected for other planetary systems. ...
Extra-Solar Planets
... separation, the greater the wobble. Detecting binary stars in this way is tedious, but do-able. Detecting planets astrometrically is extremely difficult. If one were to observe the Sun from 10 pc away, its wobble (due principally to Jupiter and Saturn) would be less than 0.002 over 30 years. (Recal ...
... separation, the greater the wobble. Detecting binary stars in this way is tedious, but do-able. Detecting planets astrometrically is extremely difficult. If one were to observe the Sun from 10 pc away, its wobble (due principally to Jupiter and Saturn) would be less than 0.002 over 30 years. (Recal ...
Introduction: The Night Sky
... current theory—it did, but moved back out owing to interaction with Saturn see PHY106 ...
... current theory—it did, but moved back out owing to interaction with Saturn see PHY106 ...
Lecture PowerPoint
... complex, carbon-based or other, exist elsewhere than on Earth? Are there Earth-like planets beyond our solar system? ...
... complex, carbon-based or other, exist elsewhere than on Earth? Are there Earth-like planets beyond our solar system? ...
Two Studies Directly Image Planets Around Foreign Stars
... Daily Telegraph (11/14, Gray), and the Baltimore Examiner's (11/13, Philips) "Space News Examiner" blog also cover the story. Same Class Of Stars May Have Icy Planets. Science News (11/14, Cowen) reports in an upcoming report of a survey of young A-type stars, "the same class of massive star that in ...
... Daily Telegraph (11/14, Gray), and the Baltimore Examiner's (11/13, Philips) "Space News Examiner" blog also cover the story. Same Class Of Stars May Have Icy Planets. Science News (11/14, Cowen) reports in an upcoming report of a survey of young A-type stars, "the same class of massive star that in ...
The most common habitable planets – atmospheric characterization
... the extensive debris disc discovered (Greaves et al. 2004) indicates that it had the necessary material for rocky planet formation, and the lower metallicity may indicate that PP01 was formed closer to the star than was the case for our Solar system (Pinotti et al. 2005). Recent research on exoplane ...
... the extensive debris disc discovered (Greaves et al. 2004) indicates that it had the necessary material for rocky planet formation, and the lower metallicity may indicate that PP01 was formed closer to the star than was the case for our Solar system (Pinotti et al. 2005). Recent research on exoplane ...
Oscillating White Dwarf Stars Background on White Dwarfs
... Ceti stars, but it was much hotter T~150000 K • Post Asymptotic giant branch (AGB). A violent mixing event is induced by a helium flash in the post-AGB phase produces an envelope of helium, carbon, and nitrogen. Most likely caused by a k mechanism caused by the ionization of K-shell electrons of car ...
... Ceti stars, but it was much hotter T~150000 K • Post Asymptotic giant branch (AGB). A violent mixing event is induced by a helium flash in the post-AGB phase produces an envelope of helium, carbon, and nitrogen. Most likely caused by a k mechanism caused by the ionization of K-shell electrons of car ...
Galactic Star Formation Science with Integral Field
... – Very sensitive VLT + SINFONI observations – 170+ Emission lines detected – Many very high excitation lines of H2 and [Fe II] – Bow-shock apex shows extremely high temperature T~6000K - revealing that the H2 molecule persists in these very high temperature regions Giannini et al. “Near-infrared, IF ...
... – Very sensitive VLT + SINFONI observations – 170+ Emission lines detected – Many very high excitation lines of H2 and [Fe II] – Bow-shock apex shows extremely high temperature T~6000K - revealing that the H2 molecule persists in these very high temperature regions Giannini et al. “Near-infrared, IF ...
Document
... Fig. 3.— Relative radial velocity measurements made during transits of WASP-14. The symbols are as follows: Subaru (circles), Keck (squares), Joshi et al. 2009 (triangles). Top panel: The Keplerian radial velocity has been subtracted, to isolate the Rossiter-McLaughlin effect. The predicted times of ...
... Fig. 3.— Relative radial velocity measurements made during transits of WASP-14. The symbols are as follows: Subaru (circles), Keck (squares), Joshi et al. 2009 (triangles). Top panel: The Keplerian radial velocity has been subtracted, to isolate the Rossiter-McLaughlin effect. The predicted times of ...
Astronomy Assignment #1
... The diameter of Alpha Centauri A is 1.71 x 109 meters. The Sun’s diameter is 1.39 x 109 meters as determined from the table in the text’s appendix. Thus, Alpha Centauri A is slightly larger than the Sun with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than A ...
... The diameter of Alpha Centauri A is 1.71 x 109 meters. The Sun’s diameter is 1.39 x 109 meters as determined from the table in the text’s appendix. Thus, Alpha Centauri A is slightly larger than the Sun with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than A ...
Astronomy of extrasolar planetary systems
... Have masses on the order of Mjup Chemical composition different from that of the Sun Gas had to be present in large quantities at the time of gas giant formation ...
... Have masses on the order of Mjup Chemical composition different from that of the Sun Gas had to be present in large quantities at the time of gas giant formation ...
Astronomy Assignment #1
... The diameter of Alpha Centauri A is 1.71 x 109 meters. The Sun’s diameter is 1.39 x 109 meters as determined from the table in the text’s appendix. Thus, Alpha Centauri A is slightly larger than the Sun with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than A ...
... The diameter of Alpha Centauri A is 1.71 x 109 meters. The Sun’s diameter is 1.39 x 109 meters as determined from the table in the text’s appendix. Thus, Alpha Centauri A is slightly larger than the Sun with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than A ...
Two obvious differences between the exoplanets and the giant
... 7 Summary of (Future) Missions CoRoT is a space project: ...
... 7 Summary of (Future) Missions CoRoT is a space project: ...
Detecting planets via transits
... Homework #5 is due Thursday (limited office hours this afternoon, but I will be available all tomorrow afternoon if you have queries) ...
... Homework #5 is due Thursday (limited office hours this afternoon, but I will be available all tomorrow afternoon if you have queries) ...
Harpell/Astro 10
... Based on everything you have learned about the formation of our solar system, which of the following statements is probably /not/ true? a) Planets always tend to orbit their star in the same direction and approximately the same plane. b) Other planetary systems will have far more numerous asteroids ...
... Based on everything you have learned about the formation of our solar system, which of the following statements is probably /not/ true? a) Planets always tend to orbit their star in the same direction and approximately the same plane. b) Other planetary systems will have far more numerous asteroids ...
NASA Just Discovered Seven New Exoplanets... So What?
... All are about the same size as Earth or Venus, or slightly smaller. Because the parent star is so dim, the planets are warmed gently despite having orbits much smaller than that of Mercury, the planet closest to the sun. Scientists said they need to study the atmospheres before determining whether t ...
... All are about the same size as Earth or Venus, or slightly smaller. Because the parent star is so dim, the planets are warmed gently despite having orbits much smaller than that of Mercury, the planet closest to the sun. Scientists said they need to study the atmospheres before determining whether t ...
AAS.StarFormation - National Optical Astronomy Observatory
... Implications for Planet Building • In combination, these observations suggest: – accretion disks surround all forming stars – disk masses and sizes are similar to our solar system ...
... Implications for Planet Building • In combination, these observations suggest: – accretion disks surround all forming stars – disk masses and sizes are similar to our solar system ...
McDonald Observatory Planet Search - tls
... • Long period variations are most likely due to giant planets around stars with Mstar > 1 Mסּ • Short period variations are due to radial pulsations in the fundamental and overtone modes • Pulsations can be used to get funamental parameters of ...
... • Long period variations are most likely due to giant planets around stars with Mstar > 1 Mסּ • Short period variations are due to radial pulsations in the fundamental and overtone modes • Pulsations can be used to get funamental parameters of ...
Planets beyond the solar system
... Needs several years to find then confirm Earth-like planets – “the soonest we anticipate announcing an Earth-size planet orbiting a Sun-like star would be sometime in 2012-2013”. ...
... Needs several years to find then confirm Earth-like planets – “the soonest we anticipate announcing an Earth-size planet orbiting a Sun-like star would be sometime in 2012-2013”. ...
KS5_Pupil_Sheets_Independent
... This activity is designed to enrich your study of astrophysics and cosmology. Work through the tasks carefully, and record all your working. If you get stuck, look at the answers at the end or consult the web sites suggested. Planets outside our Solar System Scientists have detected more than 1800 e ...
... This activity is designed to enrich your study of astrophysics and cosmology. Work through the tasks carefully, and record all your working. If you get stuck, look at the answers at the end or consult the web sites suggested. Planets outside our Solar System Scientists have detected more than 1800 e ...
Key Stage 5 – Exoplanet estimator
... This activity is designed to enrich your study of astrophysics and cosmology. Work through the tasks carefully, and record all your working. If you get stuck, look at the answers at the end or consult the web sites suggested. Planets outside our Solar System Scientists have detected more than 1800 e ...
... This activity is designed to enrich your study of astrophysics and cosmology. Work through the tasks carefully, and record all your working. If you get stuck, look at the answers at the end or consult the web sites suggested. Planets outside our Solar System Scientists have detected more than 1800 e ...
Tau Ceti
Tau Ceti (τ Cet, τ Ceti) is a star in the constellation Cetus that is spectrally similar to the Sun, although it has only about 78% of the Sun's mass. At a distance of just under 12 light-years from the Solar System, it is a relatively nearby star, and is the closest solitary G-class star. The star appears stable, with little stellar variation, and is metal-deficient.Observations have detected more than ten times as much dust surrounding Tau Ceti as is present in the Solar System. Since December 2012, there has been evidence of possibly five planets orbiting Tau Ceti, with two of these being potentially in the habitable zone. Because of its debris disk, any planet orbiting Tau Ceti would face far more impact events than Earth. Despite this hurdle to habitability, its solar analog (Sun-like) characteristics have led to widespread interest in the star. Given its stability, similarity and relative proximity to the Sun, Tau Ceti is consistently listed as a target for the Search for Extra-Terrestrial Intelligence (SETI), and it appears in some science fiction literature.It can be seen with the unaided eye as a third-magnitude star. As seen from Tau Ceti, the Sun would be a third-magnitude star in the constellation Boötes.