Transiting exoplanets from the CoRoT space mission
... The central star was spectroscopically analyzed using the 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 (Valent ...
... The central star was spectroscopically analyzed using the 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 (Valent ...
ph709-14
... at between 20 million and 100 million years old. Most dust grains in the disk are not agglomerating to form larger bodies; instead, they are eroding and being moved away from the star by radiation pressure when their size goes below about 2-10 microns. Theoretically, this disk should have lasted for ...
... at between 20 million and 100 million years old. Most dust grains in the disk are not agglomerating to form larger bodies; instead, they are eroding and being moved away from the star by radiation pressure when their size goes below about 2-10 microns. Theoretically, this disk should have lasted for ...
PLANETS
... at between 20 million and 100 million years old. Most dust grains in the disk are not agglomerating to form larger bodies; instead, they are eroding and being moved away from the star by radiation pressure when their size goes below about 2-10 microns. Theoretically, this disk should have lasted for ...
... at between 20 million and 100 million years old. Most dust grains in the disk are not agglomerating to form larger bodies; instead, they are eroding and being moved away from the star by radiation pressure when their size goes below about 2-10 microns. Theoretically, this disk should have lasted for ...
Jura et al. 2004 - Department of Physics and Astronomy
... template spectrum (Cohen et al 2003), and averaged the resulting spectra from corresponding nod positions. We plot the resulting spectra of our targets with IR excesses in Figure 1. Based upon comparisons of IRS spectra of non-variable calibration sources to ground-based, IRAS, and Spitzer IRAC flux ...
... template spectrum (Cohen et al 2003), and averaged the resulting spectra from corresponding nod positions. We plot the resulting spectra of our targets with IR excesses in Figure 1. Based upon comparisons of IRS spectra of non-variable calibration sources to ground-based, IRAS, and Spitzer IRAC flux ...
Potential for Life on the Terrestrial Planets
... current signal threshold. The discovery of CoRoT-7b, the first small rocky exoplanet with measured radius and mass (Léger et al., 2009), and therefore with a known density, has opened up a new research era. While the European COnvection, ROtation and planetary Transits (CoRoT) space observatory has ...
... current signal threshold. The discovery of CoRoT-7b, the first small rocky exoplanet with measured radius and mass (Léger et al., 2009), and therefore with a known density, has opened up a new research era. While the European COnvection, ROtation and planetary Transits (CoRoT) space observatory has ...
The Planets Testify of the Creator
... occurred when these cycles aligned with the holy days on the Hebrew Calendar.[12] The Venus Calendar. It might be constructive here to note how the cycles of Venus form a miniature of all history, because this again shows the design to the solar system. The period of Venus is about 583 11/12 days, s ...
... occurred when these cycles aligned with the holy days on the Hebrew Calendar.[12] The Venus Calendar. It might be constructive here to note how the cycles of Venus form a miniature of all history, because this again shows the design to the solar system. The period of Venus is about 583 11/12 days, s ...
The Mt John University Observatory search for Earth
... search for bio-signatures in the atmosphere of an Earth-like planet in the habitable zone. For the far future, many decades to centuries from now, one can even imagine that the first interstellar probe will be launched to travel to one of the systems, where we found evidence for a nearby Earth twin. ...
... search for bio-signatures in the atmosphere of an Earth-like planet in the habitable zone. For the far future, many decades to centuries from now, one can even imagine that the first interstellar probe will be launched to travel to one of the systems, where we found evidence for a nearby Earth twin. ...
Star Classification and its Connection to Exoplanets.
... the pie, so the viewer can see the result: G classified (sun-like) stars have the majority of the exoplanets, at 38%. The second pie chart uses data from the percentage of stars that have planets, so at around 6.6% of a total of around 18%, G stars make up about 37%, again the dominant planet host. ...
... the pie, so the viewer can see the result: G classified (sun-like) stars have the majority of the exoplanets, at 38%. The second pie chart uses data from the percentage of stars that have planets, so at around 6.6% of a total of around 18%, G stars make up about 37%, again the dominant planet host. ...
The Interstellar Medium
... a. the lines are blue shifted. b. the lines are red shifted. c. the lines are extremely broad. d. the lines are extremely narrow. e. the lines are much darker than the stellar lines. The local bubble a. is a high temperature low density region in the interstellar medium around the sun. b. is a nearb ...
... a. the lines are blue shifted. b. the lines are red shifted. c. the lines are extremely broad. d. the lines are extremely narrow. e. the lines are much darker than the stellar lines. The local bubble a. is a high temperature low density region in the interstellar medium around the sun. b. is a nearb ...
CHP 10
... b. the lines are red shifted. c. the lines are extremely broad. d. the lines are extremely narrow. e. the lines are much darker than the stellar lines. The local bubble a. is a high temperature low density region in the interstellar medium around the sun. b. is a nearby emission nebula. c. is compos ...
... b. the lines are red shifted. c. the lines are extremely broad. d. the lines are extremely narrow. e. the lines are much darker than the stellar lines. The local bubble a. is a high temperature low density region in the interstellar medium around the sun. b. is a nearby emission nebula. c. is compos ...
Script Chapter 7 part 1
... at about 140 pc and because of their proximity they are important regions for detailed investigations of the star and planet formation process. Well studied regions are: – The Taurus molecular cloud, at a distance of about 140 pc, is a large, about 30 pc wide, loose association of many molecular cor ...
... at about 140 pc and because of their proximity they are important regions for detailed investigations of the star and planet formation process. Well studied regions are: – The Taurus molecular cloud, at a distance of about 140 pc, is a large, about 30 pc wide, loose association of many molecular cor ...
Planetary system formation in thermally evolving viscous
... torque due to material corotating with the planet. This is smaller than the horseshoe drag and is important when the horseshoe drag is rendered inoperative due to viscous/thermal diffusion processes in the disc acting on time scales that are short relative to the horseshoe U-turn time scale. The cor ...
... torque due to material corotating with the planet. This is smaller than the horseshoe drag and is important when the horseshoe drag is rendered inoperative due to viscous/thermal diffusion processes in the disc acting on time scales that are short relative to the horseshoe U-turn time scale. The cor ...
Are planetary systems flat?
... •if Pluto were initially in a low-eccentricity, low-inclination orbit outside Neptune it is inevitably captured into 3:2 resonance with Neptune •once Pluto is captured its eccentricity and inclination grow as Neptune continues to migrate outwards •other objects may be captured in the resonance as we ...
... •if Pluto were initially in a low-eccentricity, low-inclination orbit outside Neptune it is inevitably captured into 3:2 resonance with Neptune •once Pluto is captured its eccentricity and inclination grow as Neptune continues to migrate outwards •other objects may be captured in the resonance as we ...
MHD_of_Accretion_Disks
... Accretion Disks offer novel and efficient ways of extracting the Gravitational Energy A blob of gas in an orbit around a central gravitating body will stay in that orbit. If we then remove Energy and Angular Momentum from the ...
... Accretion Disks offer novel and efficient ways of extracting the Gravitational Energy A blob of gas in an orbit around a central gravitating body will stay in that orbit. If we then remove Energy and Angular Momentum from the ...
Astronomy 16: Introduction
... - RHS = total no. of recombinations per second - S* = no. of ionizing photons emitted per second (can be derived from Planck equation) e.g. O5 star: S* 5 x 1049 photons/sec B1 star: S* 3 x 1045 photons/sec - R = radius of H II region (cm) - nH = density of gas being ionized (cm-3) ...
... - RHS = total no. of recombinations per second - S* = no. of ionizing photons emitted per second (can be derived from Planck equation) e.g. O5 star: S* 5 x 1049 photons/sec B1 star: S* 3 x 1045 photons/sec - R = radius of H II region (cm) - nH = density of gas being ionized (cm-3) ...
Habitability of super-Earth planets around main
... early F stars) in the context of exobiology. Towards the low mass limit at about 0.5 M⊙, there are virtually no stellar evolutionary changes for these stars while being on the mainsequence owing to the current age of the Universe. However, regarding M-type stars, adverse influences on the origin and ...
... early F stars) in the context of exobiology. Towards the low mass limit at about 0.5 M⊙, there are virtually no stellar evolutionary changes for these stars while being on the mainsequence owing to the current age of the Universe. However, regarding M-type stars, adverse influences on the origin and ...
The local ISM in three dimensions: kinematics
... data for 157 lines of sight by Redfield and Linsky (2008). Three of these clouds have irregular shapes as seen from the Earth, but the Mic cloud is filamentary. With only 15 lines of sight to determine its shape, the thickness of this cloud is not well determined. Figure 5 shows the angular distribu ...
... data for 157 lines of sight by Redfield and Linsky (2008). Three of these clouds have irregular shapes as seen from the Earth, but the Mic cloud is filamentary. With only 15 lines of sight to determine its shape, the thickness of this cloud is not well determined. Figure 5 shows the angular distribu ...
Lecture8_v2 - Lick Observatory
... Transiting planets • Can measure size, mass, temperature and spectra • Can test the atmospheric models that have been developed for planets in our solar system • Some of these planets are subject to more exciting conditions than the ones in the Solar System: – Small distance from star Page ...
... Transiting planets • Can measure size, mass, temperature and spectra • Can test the atmospheric models that have been developed for planets in our solar system • Some of these planets are subject to more exciting conditions than the ones in the Solar System: – Small distance from star Page ...
Comets
... A comet, Latin for “hairy star,” is a large ball of ice and rock often described as a “dirty snowball.” Most comets are hidden from our eyes, far from the center of the solar system in one of two reservoirs: the Kuiper Belt or the Oort Cloud. The Kuiper Belt The Kuiper Belt lies outside the orbit of ...
... A comet, Latin for “hairy star,” is a large ball of ice and rock often described as a “dirty snowball.” Most comets are hidden from our eyes, far from the center of the solar system in one of two reservoirs: the Kuiper Belt or the Oort Cloud. The Kuiper Belt The Kuiper Belt lies outside the orbit of ...
Comets, vagrants of the universe
... The team has compiled all the information into a ‘Notebook field researcher’ for good planning and development work. We had the great opportunity to talk with Mirjana Povic, astrophysics who clarified many doubts for us. To do this project we have made various activities: a night out to observe the ...
... The team has compiled all the information into a ‘Notebook field researcher’ for good planning and development work. We had the great opportunity to talk with Mirjana Povic, astrophysics who clarified many doubts for us. To do this project we have made various activities: a night out to observe the ...
An Unbiased Near-infrared Interferometric Survey for Hot
... by the interaction with stellar radiation (Poynting–Robertson drag) and the evaporation of comets heated when they get close to the Sun supplies dust. While these scenarios might work for a few MIR-detected systems, they generally do not work well for more massive systems, as have been detected in t ...
... by the interaction with stellar radiation (Poynting–Robertson drag) and the evaporation of comets heated when they get close to the Sun supplies dust. While these scenarios might work for a few MIR-detected systems, they generally do not work well for more massive systems, as have been detected in t ...
Primary and secondary eclipse spectroscopy with JWST: exploring
... these are transiting, and another is deemed habitable. Therefore the potential for eclipse spectroscopy of terrestrial planets with the James Webb Space Telescope (JWST) has become an active field of study. Aims. We aim to extensively explore the parameter space (type of stars, planet orbital period ...
... these are transiting, and another is deemed habitable. Therefore the potential for eclipse spectroscopy of terrestrial planets with the James Webb Space Telescope (JWST) has become an active field of study. Aims. We aim to extensively explore the parameter space (type of stars, planet orbital period ...
Transit surveys for Earths in the habitable zones of white dwarfs
... (e.g., Nordhaus et al. 2010). Planets present in the white dwarf habitable zone (WDHZ) must arrive after this phase. This may occur via several paths (Faedi et al. 2010): planets can form out of gas near the white dwarf, via the interaction or merger of binary stars (Livio et al. 2005), or by captur ...
... (e.g., Nordhaus et al. 2010). Planets present in the white dwarf habitable zone (WDHZ) must arrive after this phase. This may occur via several paths (Faedi et al. 2010): planets can form out of gas near the white dwarf, via the interaction or merger of binary stars (Livio et al. 2005), or by captur ...
theh – rdiagramsofyoungclust ersandtheformati on ofp
... sequence; next we shall try to explain this peculiarity as the result of the formation of planetary systems around contracting stars. Finally it will be seen how this hypothesis can explain a number of phenomena related to T T auri stars, Herbig-Haro objects and variable nebulae. We are adopting her ...
... sequence; next we shall try to explain this peculiarity as the result of the formation of planetary systems around contracting stars. Finally it will be seen how this hypothesis can explain a number of phenomena related to T T auri stars, Herbig-Haro objects and variable nebulae. We are adopting her ...