A brief history of a glorious universe
... developed 13 Bya. Eight billion years later, the sun and Earth were born. Here's how: A gas cloud in the Milky Way collapsed into many tens of stars, including massive stars that soon exploded and contributed their heavy chemical elements to the stillforming smaller stars. Some gases gravitated toge ...
... developed 13 Bya. Eight billion years later, the sun and Earth were born. Here's how: A gas cloud in the Milky Way collapsed into many tens of stars, including massive stars that soon exploded and contributed their heavy chemical elements to the stillforming smaller stars. Some gases gravitated toge ...
Hill Sphere
... Formation of Extrasolar Planets (or any Giant Planet): Hydrostatic models for in situ formation: For giant planets to form close to the parent star high surface mass density of solids is required (because the larger Kepler shear near the star decreases the solid core’s isolation mass unless the amo ...
... Formation of Extrasolar Planets (or any Giant Planet): Hydrostatic models for in situ formation: For giant planets to form close to the parent star high surface mass density of solids is required (because the larger Kepler shear near the star decreases the solid core’s isolation mass unless the amo ...
Sample - Physics @ IUPUI
... 10) If a neutron star accretes matter from a companion star, how does the spin change? • A) spins faster • B) spins slower • C) spin unchanged • D) stops spinning 11) What are pulsars? • A) rapidly spinning neutron stars • B) rapidly spinning black holes • C) stars that change temperature rapidly • ...
... 10) If a neutron star accretes matter from a companion star, how does the spin change? • A) spins faster • B) spins slower • C) spin unchanged • D) stops spinning 11) What are pulsars? • A) rapidly spinning neutron stars • B) rapidly spinning black holes • C) stars that change temperature rapidly • ...
Slides in PDF format
... • Constraints on the formation and early evolution of the Solar System : – migration processes in the disk – the post-accretional heating events – the collisional events that have occurred since 4.6 Gyrs ...
... • Constraints on the formation and early evolution of the Solar System : – migration processes in the disk – the post-accretional heating events – the collisional events that have occurred since 4.6 Gyrs ...
Goal: To understand the HR diagram
... Clusters of stars • Stars form in clusters. • If we plotted all the stars from a single cluster what might we get? • First we should ask 2 questions: • 1) How do the distances from us compare to all the stars in the cluster (close to same, or not close)? • 2) How do the ages of the stars in the clu ...
... Clusters of stars • Stars form in clusters. • If we plotted all the stars from a single cluster what might we get? • First we should ask 2 questions: • 1) How do the distances from us compare to all the stars in the cluster (close to same, or not close)? • 2) How do the ages of the stars in the clu ...
PLANETARY mOTION
... the axis, but without any change in the tilt. This changes the relative positions of the stars but does not affect the seasons. ...
... the axis, but without any change in the tilt. This changes the relative positions of the stars but does not affect the seasons. ...
No Slide Title
... with the Sagittarius A* radio source, surrounded by a torus (R=7 pc) of molecular gas, which flows in at a rate of 0.001-0.01 Msun/yr and formed dozens of massive stars within the last 3-7 Myr. Nucleus (right panel, showing gas) is much smaller than the black dot in the background picture. A fairly ...
... with the Sagittarius A* radio source, surrounded by a torus (R=7 pc) of molecular gas, which flows in at a rate of 0.001-0.01 Msun/yr and formed dozens of massive stars within the last 3-7 Myr. Nucleus (right panel, showing gas) is much smaller than the black dot in the background picture. A fairly ...
Chapter 12 Pre-supernova evolution of massive stars
... Woosley, Heger & Weaver (2002, Rev. Mod. Ph. 74, 1015). ...
... Woosley, Heger & Weaver (2002, Rev. Mod. Ph. 74, 1015). ...
Worldview - Leslie Looney
... of others •! There was no universal rule governing the planets motions. •! Nonetheless, for a 1000 years this model ruled western thought •! However, by the late middle-ages astronomers felt that it was too complex, and a search began for a system with simple underlying ...
... of others •! There was no universal rule governing the planets motions. •! Nonetheless, for a 1000 years this model ruled western thought •! However, by the late middle-ages astronomers felt that it was too complex, and a search began for a system with simple underlying ...
Fulltext PDF
... spectrum of prominences and found a yellow line which he could not attribute to any known element. He invoked a new element to explain the presence of the yellow line and called it helium after 'helios' meaning the Sun in Greek. It was only in 1895 that helium was found on Earth, trapped in radioact ...
... spectrum of prominences and found a yellow line which he could not attribute to any known element. He invoked a new element to explain the presence of the yellow line and called it helium after 'helios' meaning the Sun in Greek. It was only in 1895 that helium was found on Earth, trapped in radioact ...
Rotational spin-up in the 30-Myr
... and young open clusters. The changing shape of the rotational distribution as the stars age is relatively well accounted for by these models. Yet, a better sampling of the temporal evolution of stellar rotation is required. Figs. 1 & 2 reveal an age gap for observations of the pre-main-sequence spin ...
... and young open clusters. The changing shape of the rotational distribution as the stars age is relatively well accounted for by these models. Yet, a better sampling of the temporal evolution of stellar rotation is required. Figs. 1 & 2 reveal an age gap for observations of the pre-main-sequence spin ...
Episode 5: Constellations of the zodiac
... [Note for script writer: This brief has been prepared keeping the average non-specialist viewer in mind. The attempt has been to develop the subject in a logical sequence that could bring out the excitement of the process of making new discoveries and relating them to the gradual understanding of th ...
... [Note for script writer: This brief has been prepared keeping the average non-specialist viewer in mind. The attempt has been to develop the subject in a logical sequence that could bring out the excitement of the process of making new discoveries and relating them to the gradual understanding of th ...