High Resolution Spectroscopy of Stars with Planets
... • Fischer and Valenti (2005) II – Suggest the relation between maximum of total planet mass and metallicity • Total planet mass is related with protoplanetary disk mass ⇒ upper limit of total planet mass is increasing with increasing [Fe/H] ...
... • Fischer and Valenti (2005) II – Suggest the relation between maximum of total planet mass and metallicity • Total planet mass is related with protoplanetary disk mass ⇒ upper limit of total planet mass is increasing with increasing [Fe/H] ...
the earth
... You will be dealing with the composition and structure of the earth’s atmosphere in Chapter 8. There are three stages in the evolution of the present atmosphere. The first stage is marked by the loss of primordial atmosphere. In the second stage, the hot interior of the earth contributed to the evol ...
... You will be dealing with the composition and structure of the earth’s atmosphere in Chapter 8. There are three stages in the evolution of the present atmosphere. The first stage is marked by the loss of primordial atmosphere. In the second stage, the hot interior of the earth contributed to the evol ...
Formation and Detectability of Terrestrial Planets around
... the threshold of detection. A good representation of the Doppler velocity state-of-the-art is presented by the triple planet system orbiting HD 69830. This system has been shown to contain three Neptune-mass planets, including one on a 197-day orbit, all revealed after only 74 radial velocity observ ...
... the threshold of detection. A good representation of the Doppler velocity state-of-the-art is presented by the triple planet system orbiting HD 69830. This system has been shown to contain three Neptune-mass planets, including one on a 197-day orbit, all revealed after only 74 radial velocity observ ...
The Young Stars
... samples and spatial distributions. Finally, we find that both accretion and outflow have not been entirely eradicated but are still ongoing in a moderate form. This activity thus presents itself in manifestations explorable with our optical telescopes. As planet-forming environments, the classical T ...
... samples and spatial distributions. Finally, we find that both accretion and outflow have not been entirely eradicated but are still ongoing in a moderate form. This activity thus presents itself in manifestations explorable with our optical telescopes. As planet-forming environments, the classical T ...
Last time: looked at proton-proton chain to convert Hydrogen into
... Young stars which are still accreting material are called T-Tauri Stars. Because mass is piling on, they sometimes have explosive outbursts. ...
... Young stars which are still accreting material are called T-Tauri Stars. Because mass is piling on, they sometimes have explosive outbursts. ...
What Makes a Planet Habitable?
... These questions relate to at least two major challenges. We need to understand our biochemical origins in the distant past of the Earth, and in a larger context, we need to identify the main conditions required to form life on a planet in the first place. While there is hope to eventually answer the ...
... These questions relate to at least two major challenges. We need to understand our biochemical origins in the distant past of the Earth, and in a larger context, we need to identify the main conditions required to form life on a planet in the first place. While there is hope to eventually answer the ...
Our Sun, Sol - Hobbs High School
... is a highly magnetized, spinning neutron star with jets of particles moving almost at the speed of light streaming out above its magnetic poles. • These jets produce very powerful beams of light. • The precise periods of pulsars make them useful tools to astronomers. ...
... is a highly magnetized, spinning neutron star with jets of particles moving almost at the speed of light streaming out above its magnetic poles. • These jets produce very powerful beams of light. • The precise periods of pulsars make them useful tools to astronomers. ...
The Death of Stars
... • Because all the Type Ia supernovae ignite at a similar mass (1.4Msun), they have similar luminosities: they are standard candles! • They are really bright 5 billion times brighter than our Sun: so we see them at huge distances. • By comparing the apparent brightness with the intrinsic luminosity w ...
... • Because all the Type Ia supernovae ignite at a similar mass (1.4Msun), they have similar luminosities: they are standard candles! • They are really bright 5 billion times brighter than our Sun: so we see them at huge distances. • By comparing the apparent brightness with the intrinsic luminosity w ...
Heyvaerts
... md = mu + me = ms • If quark masses = 0 solution is strange matter no leptons and md = mu = ms In this case Fermi momenta equal, density equal and strange matter neutral without leptons. • Speculation that such matter, once formed, is more stable than ordinary nucleonic matter, even at low pressure ...
... md = mu + me = ms • If quark masses = 0 solution is strange matter no leptons and md = mu = ms In this case Fermi momenta equal, density equal and strange matter neutral without leptons. • Speculation that such matter, once formed, is more stable than ordinary nucleonic matter, even at low pressure ...
Stars - Madison County Schools
... • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusion begins. • Begins the main sequence phase of the star • Most of its life is in this phase ...
... • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusion begins. • Begins the main sequence phase of the star • Most of its life is in this phase ...
ReviewQuestionsForClass
... Pretty basic – look at the PowerPoint Stars part 1: brightness and distance Be able to do the things on the astro sheet plus parallax Determine the distance to a Cepheid variable star. Spectroscopic parallax Regular parallax. ...
... Pretty basic – look at the PowerPoint Stars part 1: brightness and distance Be able to do the things on the astro sheet plus parallax Determine the distance to a Cepheid variable star. Spectroscopic parallax Regular parallax. ...
Astro 10 Practice Test 3
... b. The helium in their cores has all been used up, which means they’ve started buring hydrogen for the first time. c. They have been ejected from the cluster by gravitational encounters with other stars. d. They’ve run out of hydrogen to burn in their cores, and have evolved into red giants. ...
... b. The helium in their cores has all been used up, which means they’ve started buring hydrogen for the first time. c. They have been ejected from the cluster by gravitational encounters with other stars. d. They’ve run out of hydrogen to burn in their cores, and have evolved into red giants. ...
`A ship flying in space:` Earth seen through the eyes of an astronaut
... A NASA team has found a small planet best positioned to have liquid water but has yet to determine whether it is solid. The most Earth-like planet ever discovered is circling a star 600 light years away, a key finding in an ongoing quest to learn if life exists beyond Earth, scientists have said. T ...
... A NASA team has found a small planet best positioned to have liquid water but has yet to determine whether it is solid. The most Earth-like planet ever discovered is circling a star 600 light years away, a key finding in an ongoing quest to learn if life exists beyond Earth, scientists have said. T ...
Supernovae - Michigan State University
... If a stellar core grows beyond its Chandrasekhar mass limit, it will collapse. Typically this will result in a Supernova explosion at least the outer part of a star is blown off into space ...
... If a stellar core grows beyond its Chandrasekhar mass limit, it will collapse. Typically this will result in a Supernova explosion at least the outer part of a star is blown off into space ...
Extrasolar planets Topics to be covered Planets and brown dwarfs
... • Overall, ~5% of solar-like stars have radial velocity–detected Jupiters • But if we take metallicity into account: – >20% of stars with 3x the metal content of the Sun have planets – only ~3% of stars with 1/3rd of the Sun’s metallicity have planets ...
... • Overall, ~5% of solar-like stars have radial velocity–detected Jupiters • But if we take metallicity into account: – >20% of stars with 3x the metal content of the Sun have planets – only ~3% of stars with 1/3rd of the Sun’s metallicity have planets ...
ph709-11
... Currently the most important class of exoplanets are those that transit the disk of their parent stars, allowing for a determination of planetary radii. The first confirmed transiting planets observed were all more massive than Saturn, have orbital periods of only a few days, and orbit stars bright ...
... Currently the most important class of exoplanets are those that transit the disk of their parent stars, allowing for a determination of planetary radii. The first confirmed transiting planets observed were all more massive than Saturn, have orbital periods of only a few days, and orbit stars bright ...
The Astrophysical Origins of the Short
... Contaminates Sun’s molecular cloud [wind possibly triggers collapse of cloud core] (Wasserburg et al. 1994) Nearby (Type II) Supernova ...
... Contaminates Sun’s molecular cloud [wind possibly triggers collapse of cloud core] (Wasserburg et al. 1994) Nearby (Type II) Supernova ...
The Milky Way - TCNJ | The College of New Jersey
... So Can Stochastic Star Formation • Random birth of Massive Stars • Their SN explosions compress nearby clouds & make new stars • Differential rotation of galaxy yields spiral appearance by streching the stars out • This best explains "rattier", broken-up spirals (like the Milky Way, though some Den ...
... So Can Stochastic Star Formation • Random birth of Massive Stars • Their SN explosions compress nearby clouds & make new stars • Differential rotation of galaxy yields spiral appearance by streching the stars out • This best explains "rattier", broken-up spirals (like the Milky Way, though some Den ...