PH607lec12-5gal3
... Low Surface brightness galaxies (LSB) Very difficult to detect! Need dedicated surveys Recent automated CCD surveys suggest there may be more LSB galaxies than all the other types of galaxy put together Peculiar Galaxies In particular, interacting galaxies Many cataloged by Arp in 1966 ...
... Low Surface brightness galaxies (LSB) Very difficult to detect! Need dedicated surveys Recent automated CCD surveys suggest there may be more LSB galaxies than all the other types of galaxy put together Peculiar Galaxies In particular, interacting galaxies Many cataloged by Arp in 1966 ...
High-precision abundances of elements in solar twin stars: Trends
... Context. High-precision determinations of abundances of elements in the atmospheres of the Sun and solar twin stars indicate that the Sun has an unusual low ratio between refractory and volatile elements. This has led to the suggestion that the relation between abundance ratios, [X/Fe], and elementa ...
... Context. High-precision determinations of abundances of elements in the atmospheres of the Sun and solar twin stars indicate that the Sun has an unusual low ratio between refractory and volatile elements. This has led to the suggestion that the relation between abundance ratios, [X/Fe], and elementa ...
Glencoe Earth Science
... Properties of Stars The color of a star indicates its temperature. For example, hot stars are a blue-white color. A relatively cool star looks orange or red. Stars that have the same temperature as the Sun have a yellow color. Astronomers study the composition of stars by observing their spectra. Wh ...
... Properties of Stars The color of a star indicates its temperature. For example, hot stars are a blue-white color. A relatively cool star looks orange or red. Stars that have the same temperature as the Sun have a yellow color. Astronomers study the composition of stars by observing their spectra. Wh ...
Binarity in carbon-enhanced metal-poor stars
... as calibration for the zero-point. The choice of a zero-point based on radial velocity standards is strengthened by a clear observed trend of the radial velocity standards’ offsets with their literature values versus the observation date. The total magnitude of this variation over the full observing ...
... as calibration for the zero-point. The choice of a zero-point based on radial velocity standards is strengthened by a clear observed trend of the radial velocity standards’ offsets with their literature values versus the observation date. The total magnitude of this variation over the full observing ...
Metal-poor Stars
... equivalent of the high-redshift Universe. Hence, they also provide us with observational constraints on the nature of the first stars and supernovae. Such knowledge is invaluable for various theoretical works on the early Universe. Focusing on long-lived low-mass (∼ 0.8 M ) main-sequence and giant ...
... equivalent of the high-redshift Universe. Hence, they also provide us with observational constraints on the nature of the first stars and supernovae. Such knowledge is invaluable for various theoretical works on the early Universe. Focusing on long-lived low-mass (∼ 0.8 M ) main-sequence and giant ...
- Cosmotography
... A candidate diffuse stellar substructure was previously reported in the halo of the nearby dwarf starburst galaxy NGC 4449 by Karachentsev et al. We map and analyze this feature using a unique combination of deep integrated-light images from the Black Bird 0.5-meter telescope, and high-resolution wi ...
... A candidate diffuse stellar substructure was previously reported in the halo of the nearby dwarf starburst galaxy NGC 4449 by Karachentsev et al. We map and analyze this feature using a unique combination of deep integrated-light images from the Black Bird 0.5-meter telescope, and high-resolution wi ...
KS1 Education Guide - Immersive Theatres
... Lesson 5 Multiple Intelligence Mini-Lessons on the Solar System……………..30 Solar System Object Cards (large)…………….……………………………………………………..46 ...
... Lesson 5 Multiple Intelligence Mini-Lessons on the Solar System……………..30 Solar System Object Cards (large)…………….……………………………………………………..46 ...
Altair - the hottest `cool` star in X-rays
... 2.4 MK and its emission measure distribution (EMD) is dominated by rather cool plasma at temperatures in the range of 1 – 4 MK, additionally a weak hotter component seems to contribute at a few percent level. These properties are quite typical for weakly active stars and similar to those of the quie ...
... 2.4 MK and its emission measure distribution (EMD) is dominated by rather cool plasma at temperatures in the range of 1 – 4 MK, additionally a weak hotter component seems to contribute at a few percent level. These properties are quite typical for weakly active stars and similar to those of the quie ...
lect3 — 1 Measuring stars: What can be measured?
... Standard candles are hugely important in astronomy, since obtaining the distance to most objects in the night sky is always a challenge. While main sequence stars are decent enough standard candles, it is difficult to see a typical main sequence star very far away; they are just not that bright. Wor ...
... Standard candles are hugely important in astronomy, since obtaining the distance to most objects in the night sky is always a challenge. While main sequence stars are decent enough standard candles, it is difficult to see a typical main sequence star very far away; they are just not that bright. Wor ...
Stellar Metamorphosis as Alternative to Nebular Hypothesis
... proto-planetary disk model absolutely requires that the disk be present for millions of years.[4] The infrared glowing is simply the result of a series of giant collision events that create trillions of tons of star shrapnel known as asteroids, meteorites and small moon-like objects that are undiffe ...
... proto-planetary disk model absolutely requires that the disk be present for millions of years.[4] The infrared glowing is simply the result of a series of giant collision events that create trillions of tons of star shrapnel known as asteroids, meteorites and small moon-like objects that are undiffe ...
ISNS3371_041007_bw
... • Can we actually make images of extrasolar planets? – No, this is very difficult to do. • The distances to the nearest stars are much greater than the distances from a star to its planets. – The angle between a star and its planets, as seen from Earth, is too small to resolve with our biggest teles ...
... • Can we actually make images of extrasolar planets? – No, this is very difficult to do. • The distances to the nearest stars are much greater than the distances from a star to its planets. – The angle between a star and its planets, as seen from Earth, is too small to resolve with our biggest teles ...
DATA FROM CATALOGUES OF SOLAR SYSTEM OBJECTS IN
... Finally I realized a graphical output (as online web applications) from several catalogues. Using these applications I prepared practical exercises in the form of worksheets for students and methodology sheets for teachers. Main goal were practical activities for students representing an important t ...
... Finally I realized a graphical output (as online web applications) from several catalogues. Using these applications I prepared practical exercises in the form of worksheets for students and methodology sheets for teachers. Main goal were practical activities for students representing an important t ...
Constraining tidal dissipation in F-type main
... ages of the systems, which implies that the synchronous final state has possibly already been reached. Other systems, e.g., HD15082/WASP-33, have a star so massive that a Qs too large to be measurable is expected, or show a remarkable misalignment between the stellar spin and the orbital angular mo ...
... ages of the systems, which implies that the synchronous final state has possibly already been reached. Other systems, e.g., HD15082/WASP-33, have a star so massive that a Qs too large to be measurable is expected, or show a remarkable misalignment between the stellar spin and the orbital angular mo ...
Early-type stars in the core of the young open cluster Westerlund 2
... pointing consisted of integration times of 2 × 200 and 2 × 75 s for the B and V filters respectively. The detector was a Fairchild 447 CCD of 2048 × 2048 pixels. In the standard mode of the instrument the pixels are binned by 2 × 2. Each binned pixel corresponds to 0.37 00 on the sky and the total f ...
... pointing consisted of integration times of 2 × 200 and 2 × 75 s for the B and V filters respectively. The detector was a Fairchild 447 CCD of 2048 × 2048 pixels. In the standard mode of the instrument the pixels are binned by 2 × 2. Each binned pixel corresponds to 0.37 00 on the sky and the total f ...
Sky Watcher - Boise Astronomical Society
... clusters tend to be young, only on the order of tens to hundreds of millions of years old. Because of their recent birth, they are rich in elements heavier than helium. Globular clusters on the other hand may be the innermost cores of dwarf galaxies. The stars in them formed before the universe was ...
... clusters tend to be young, only on the order of tens to hundreds of millions of years old. Because of their recent birth, they are rich in elements heavier than helium. Globular clusters on the other hand may be the innermost cores of dwarf galaxies. The stars in them formed before the universe was ...
Infrared spatial interferometer (ISI) scientists, technicians, students
... Phys. Rev. Lett, 33, 1617, 1974 Atmosphere shown to be stable enough for interference fringes from Mercury. ...
... Phys. Rev. Lett, 33, 1617, 1974 Atmosphere shown to be stable enough for interference fringes from Mercury. ...
Polaris – Distance to Pole
... To us, on whom Divine benevolence has bestowed the most diligent of observers, Tycho Brahe, from whose observations this 8-minute error of Ptolemy's in regard to Mars is deduced, it is fitting that we accept with grateful minds this gift from God, and both acknowledge and build upon it. So let us wo ...
... To us, on whom Divine benevolence has bestowed the most diligent of observers, Tycho Brahe, from whose observations this 8-minute error of Ptolemy's in regard to Mars is deduced, it is fitting that we accept with grateful minds this gift from God, and both acknowledge and build upon it. So let us wo ...
Mankind`s Purple Dawn
... and Chauvet and other parts of the world, a people whose artistic merits cannot be questioned and whose obvious knowledge of self cannot be denied. And in the same way that our modern interest in them belies a fascination with our origins as a species, could it also be that they too wondered from wh ...
... and Chauvet and other parts of the world, a people whose artistic merits cannot be questioned and whose obvious knowledge of self cannot be denied. And in the same way that our modern interest in them belies a fascination with our origins as a species, could it also be that they too wondered from wh ...
A Compilation of Relevant Articles from MMM`s first 25 years, issues
... 3.A. Sirius is 8.7 light years distant, Procyon 11.3, Altair 16.6, Fomalhaut 23, and Vega 26 Light Years distant. With a small telescope, you can find Barnard’s Star which is only 5.9 LY from here. 4.A. Stars come bigger, brighter, and hotter; and they come smaller, dimmer, and cooler. But there are ...
... 3.A. Sirius is 8.7 light years distant, Procyon 11.3, Altair 16.6, Fomalhaut 23, and Vega 26 Light Years distant. With a small telescope, you can find Barnard’s Star which is only 5.9 LY from here. 4.A. Stars come bigger, brighter, and hotter; and they come smaller, dimmer, and cooler. But there are ...
