Stellar Astronomy Sample Questions for Exam 3
... used, what kinds of planets have been found, how many planets have been found, what kind of orbits do the planets have? 4. Most of the exoplanets that have been found are “hot Jupiter’s”: large gas giants orbiting very close to their star. Explain why these types of planets are easiest to find with ...
... used, what kinds of planets have been found, how many planets have been found, what kind of orbits do the planets have? 4. Most of the exoplanets that have been found are “hot Jupiter’s”: large gas giants orbiting very close to their star. Explain why these types of planets are easiest to find with ...
An Eclectic View of our Milky Way Galaxy
... The difference between the Galaxy’s gravitational potential for standard Newtonian dynamics and a cosinusoidal potential is significant enough to produce observable effects. Star clusters appear to be one means of testing such differences. A good case in point is the cluster Bica 6, at ℓ = 167◦ , wh ...
... The difference between the Galaxy’s gravitational potential for standard Newtonian dynamics and a cosinusoidal potential is significant enough to produce observable effects. Star clusters appear to be one means of testing such differences. A good case in point is the cluster Bica 6, at ℓ = 167◦ , wh ...
Stellar population models in the Near-Infrared Meneses
... els, with slopes of −3.0 and −3.5) and a model that follows the IMF recipe of Chabrier with parameter χ = −1.3. The different initial mass function tests presented there give us insights into the complex star formation scenario that these early-type galaxies present. In future work, we will need to ...
... els, with slopes of −3.0 and −3.5) and a model that follows the IMF recipe of Chabrier with parameter χ = −1.3. The different initial mass function tests presented there give us insights into the complex star formation scenario that these early-type galaxies present. In future work, we will need to ...
Building the Hertzsprung
... What would be the lifetime of a star one tenth as massive as our sun? A: 1 billion years = 109 years B: 10 billion years = 1010 years C: 100 billion years = 1011 years D: 1 trillion years = 1012 years ...
... What would be the lifetime of a star one tenth as massive as our sun? A: 1 billion years = 109 years B: 10 billion years = 1010 years C: 100 billion years = 1011 years D: 1 trillion years = 1012 years ...
Is Draco II one of the faintest dwarf galaxies? First study from Keck
... For a cold stellar system like Dra II, it is particularly important to assess the level of systematics on the measured velocity uncertainties. DEIMOS is known to yield a small level of systematics that cannot be entirely explained from properly tracking the sources of noise in the spectra. These sys ...
... For a cold stellar system like Dra II, it is particularly important to assess the level of systematics on the measured velocity uncertainties. DEIMOS is known to yield a small level of systematics that cannot be entirely explained from properly tracking the sources of noise in the spectra. These sys ...
Lecture 16
... What is different about nuclear reactions of elements lighter than iron or heavier than ...
... What is different about nuclear reactions of elements lighter than iron or heavier than ...
Astronomical co-ordinates
... The zero-point for Dec is on the celestial horizon which is a projection of the Earth’s equator on the sky. The zero point for RA is defined as the position of the Sun in the sky at the Vernal Equinox (~21 March), the point at which the Sun crosses the equator from South to North. It is also known a ...
... The zero-point for Dec is on the celestial horizon which is a projection of the Earth’s equator on the sky. The zero point for RA is defined as the position of the Sun in the sky at the Vernal Equinox (~21 March), the point at which the Sun crosses the equator from South to North. It is also known a ...
Starspots (AIP – Klaus G
... images if the data allow, and to place the results in context to other stars. We have currently binary stars with giant or main-sequence components, stars with high lithium abundances, single class III giants as well as very young main-sequence stars and a few pre-main sequence targets. Light-Curve ...
... images if the data allow, and to place the results in context to other stars. We have currently binary stars with giant or main-sequence components, stars with high lithium abundances, single class III giants as well as very young main-sequence stars and a few pre-main sequence targets. Light-Curve ...
Stellar Characteristics and Evolution
... the first few billion years of the history of the universe when metal concentrations were low, this means that the more massive Subdwarfs have all either become white dwarfs or are in their giant phases today - only those with lower mass remain on the subdwarf sequence. Low metallicity stars are rar ...
... the first few billion years of the history of the universe when metal concentrations were low, this means that the more massive Subdwarfs have all either become white dwarfs or are in their giant phases today - only those with lower mass remain on the subdwarf sequence. Low metallicity stars are rar ...
AST 1010 Quiz questions
... 1. Construct a correctly labeled H-R diagram. Include the following regions: the main sequence, giants, supergiants, and white dwarfs. Be sure to label your axes. 2. Canopus, a bright star in our sky, has an apparent magnitude of -0.62. The star is located 96 pc from Earth. Would the absolute magnit ...
... 1. Construct a correctly labeled H-R diagram. Include the following regions: the main sequence, giants, supergiants, and white dwarfs. Be sure to label your axes. 2. Canopus, a bright star in our sky, has an apparent magnitude of -0.62. The star is located 96 pc from Earth. Would the absolute magnit ...
Name:
... Use this sheet in conjunction with the provided January Evening Sky Map (www.skymaps.com). This map shows the sky as it would appear over the Peoria area at around 8:00 p.m. in early January, at 7:00 p.m. in late January, and at 6:00 p.m. in early February. Use the map within one hour of these presc ...
... Use this sheet in conjunction with the provided January Evening Sky Map (www.skymaps.com). This map shows the sky as it would appear over the Peoria area at around 8:00 p.m. in early January, at 7:00 p.m. in late January, and at 6:00 p.m. in early February. Use the map within one hour of these presc ...
AST 207 7 Homew
... gure 1 Hertzsprrung-Russell ddiagram of the sstar cluster M115. B-V is a meeasure of color.. The vertical sscale on the lefft is apparent m magnitude, and the scaale on the rightt is absolute maagnitude. ...
... gure 1 Hertzsprrung-Russell ddiagram of the sstar cluster M115. B-V is a meeasure of color.. The vertical sscale on the lefft is apparent m magnitude, and the scaale on the rightt is absolute maagnitude. ...
Diapositiva 1
... Basic stellar parameters for single stars as input for RVS data processing: Log(g),Teff, [Fe/H], Av Derivation of L,R, age ,m using parallaxes (and stellar models) Parametrization of special sources (galaxies…) Italian contribution: Training data Galaxy simulation Cool star classification Not involv ...
... Basic stellar parameters for single stars as input for RVS data processing: Log(g),Teff, [Fe/H], Av Derivation of L,R, age ,m using parallaxes (and stellar models) Parametrization of special sources (galaxies…) Italian contribution: Training data Galaxy simulation Cool star classification Not involv ...
AAS Poster, NM 2002: "The Discovery of New
... Hubble (1936) as ``one of the most curious objects in the sky". Massey and Armandoff (1995) proposed that it is currently undergoing a starburst: despite its small size, it contains 15 spectroscopically confirmed Wolf-Rayet stars, which is a galaxyaveraged surface density that is as high as that fou ...
... Hubble (1936) as ``one of the most curious objects in the sky". Massey and Armandoff (1995) proposed that it is currently undergoing a starburst: despite its small size, it contains 15 spectroscopically confirmed Wolf-Rayet stars, which is a galaxyaveraged surface density that is as high as that fou ...
(Mike Riddle CTI)-84_eng_cr_v4.0
... cloud collapses gravitationally into a star … is still a challenging theoretical problem… Astronomers have yet to find an interstellar cloud in the actual process of collapse.” ...
... cloud collapses gravitationally into a star … is still a challenging theoretical problem… Astronomers have yet to find an interstellar cloud in the actual process of collapse.” ...
PC3692: Physics of Stellar Structure (and Evolution)
... Milky Way is a typical disk galaxy (see Fig. 5). It consists a bulge and a thin disk. The disk is thin because it’s rotationally supported, like an audio CD. You also see black lanes in the galaxy, these are caused by dust obscuration. The diameter of our luminous Milky Way is about 30 kpc. The Sun ...
... Milky Way is a typical disk galaxy (see Fig. 5). It consists a bulge and a thin disk. The disk is thin because it’s rotationally supported, like an audio CD. You also see black lanes in the galaxy, these are caused by dust obscuration. The diameter of our luminous Milky Way is about 30 kpc. The Sun ...
Double Stars in Scorpio`s Claws
... stars that are a rewarding challenge to any astronomer. Some of these are actual double stars (pairs of stars that orbit about each other), others are ‘apparent doubles’ – stars that simply lie along the same line of sight, but are very distant from each other in space. The map below indicates the l ...
... stars that are a rewarding challenge to any astronomer. Some of these are actual double stars (pairs of stars that orbit about each other), others are ‘apparent doubles’ – stars that simply lie along the same line of sight, but are very distant from each other in space. The map below indicates the l ...
The Bigger Picture
... Stellar Luminosity • When we learn how to get distances beyond the limits of parallax and sample many more stars, we will find there are stars that are stars that are 106 times the luminosity of the Sun. • This is an enormous range in energy output from stars. This is an important clue in figuring ...
... Stellar Luminosity • When we learn how to get distances beyond the limits of parallax and sample many more stars, we will find there are stars that are stars that are 106 times the luminosity of the Sun. • This is an enormous range in energy output from stars. This is an important clue in figuring ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.