THE NEUTRAL GAS DYNAMICS OF THE NEARBY MAGELLANIC
... detailed studies of galactic rotational dynamics in the absence of differential shear. Many dwarfs display solidbody rotation that is well-suited to precision rotation curve work (e.g., Oh et al. 2008). Most nearby systems appear to be dark-matter dominated (Mateo 1998), making them important labora ...
... detailed studies of galactic rotational dynamics in the absence of differential shear. Many dwarfs display solidbody rotation that is well-suited to precision rotation curve work (e.g., Oh et al. 2008). Most nearby systems appear to be dark-matter dominated (Mateo 1998), making them important labora ...
Presentation - Relativity Group
... • Stars are classified according to their spectra, with different spectral types generally corresponding to different temperatures. In order from hottest to coolest, the major spectral types are O, B, A, F, G, K, and M. These are subdivided into numbered categories; for example, the hottest A stars ...
... • Stars are classified according to their spectra, with different spectral types generally corresponding to different temperatures. In order from hottest to coolest, the major spectral types are O, B, A, F, G, K, and M. These are subdivided into numbered categories; for example, the hottest A stars ...
Pretty Pictures of the Cosmos
... for the constellation in which it resides. About four times smaller (in radius) than our Milky Way Galaxy and the Andromeda Galaxy (M31), it is much larger than the many of the local spheroidal dwarfgalaxies. ...
... for the constellation in which it resides. About four times smaller (in radius) than our Milky Way Galaxy and the Andromeda Galaxy (M31), it is much larger than the many of the local spheroidal dwarfgalaxies. ...
NSDL/NSTA Web Seminar: Celebrating Astronomy: A Star`s Story
... Astronomy is a dynamic science. New discoveries add to our knowledge of the universe and our own solar system. • New images brought to use by the Hubble Space Telescope show that star formation is more complex and violent than anyone had believed. • Supersonic jets of particles and dense clots of d ...
... Astronomy is a dynamic science. New discoveries add to our knowledge of the universe and our own solar system. • New images brought to use by the Hubble Space Telescope show that star formation is more complex and violent than anyone had believed. • Supersonic jets of particles and dense clots of d ...
Chapter 17 Star Stuff Agenda How does a star`s mass affect nuclear
... • Fusion progresses no further in a low-mass star because the core temperature never grows hot enough for fusion of heavier elements (some He fuses to C to make oxygen) • Degeneracy pressure supports the white dwarf against gravity ...
... • Fusion progresses no further in a low-mass star because the core temperature never grows hot enough for fusion of heavier elements (some He fuses to C to make oxygen) • Degeneracy pressure supports the white dwarf against gravity ...
Moitinho et al. - Wiley Online Library
... seem to form an elongated structure between l = 230◦ and l = 250◦ , stretching toward the outer Galaxy. We interpret this structure as the probable extension of the local (Orion) arm in the third quadrant. It appears that the Orion arm stretches outward, reaching and crossing the Perseus arm. Despit ...
... seem to form an elongated structure between l = 230◦ and l = 250◦ , stretching toward the outer Galaxy. We interpret this structure as the probable extension of the local (Orion) arm in the third quadrant. It appears that the Orion arm stretches outward, reaching and crossing the Perseus arm. Despit ...
Chromospherically young, kinematically old stars
... interpreted as a sign of its youth. Young dwarfs show high rotation rates, and the interaction between rotation and outer envelope convection is expected to drive the chromospheric activity. Nevertheless, not only young single stars present high rotation rates. Close and contact binaries can keep hi ...
... interpreted as a sign of its youth. Young dwarfs show high rotation rates, and the interaction between rotation and outer envelope convection is expected to drive the chromospheric activity. Nevertheless, not only young single stars present high rotation rates. Close and contact binaries can keep hi ...
v445 puppis, a first identified helium nova
... masses are attached to each light curve in units of M . The dotted curve denotes a 1.3 M model with different composition (for detail, see text). The wind mass loss stops at asterisk on each curve. Dots and arrows represent observational data taken from VSNET (magnitude scale is in the right-hand ...
... masses are attached to each light curve in units of M . The dotted curve denotes a 1.3 M model with different composition (for detail, see text). The wind mass loss stops at asterisk on each curve. Dots and arrows represent observational data taken from VSNET (magnitude scale is in the right-hand ...
pierrehumbert_lecture_1
... the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviolet drives photochemistry, and can break up heavy molecules into lighte ...
... the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviolet drives photochemistry, and can break up heavy molecules into lighte ...
Living with a Red Dwarf - Center for Space and Habitability (CSH)
... the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviolet drives photochemistry, and can break up heavy molecules into lighte ...
... the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviolet drives photochemistry, and can break up heavy molecules into lighte ...
Building galaxies Hunt, Leslie Kipp
... that atomic gas mass fraction also varies along the Hubble sequence. On the other hand, the massto-light ratio measured in the B band remains relatively constant with morphology, even toward the very late spiral types (although see Burstein 1982). With data from Roberts & Haynes (1994), Figure 3 sho ...
... that atomic gas mass fraction also varies along the Hubble sequence. On the other hand, the massto-light ratio measured in the B band remains relatively constant with morphology, even toward the very late spiral types (although see Burstein 1982). With data from Roberts & Haynes (1994), Figure 3 sho ...
@let@token Stellar Oscillations: Pulsations of Stars Throughout the
... We analyze the stability of g-modes in white dwarfs with hydrogen envelopes. All relevant physical processes take place in the outer layer of hydrogen-rich material, which consists of a radiative layer overlaid by a convective envelope. The radiative layer contributes to mode damping, because its op ...
... We analyze the stability of g-modes in white dwarfs with hydrogen envelopes. All relevant physical processes take place in the outer layer of hydrogen-rich material, which consists of a radiative layer overlaid by a convective envelope. The radiative layer contributes to mode damping, because its op ...
Why do we Still Believe in Newton`s Law? Facts, Myths and Methods
... has been achieved in the question as to what the related quantities ‘dark matter’ and ‘dark energy’ do really mean. A soulmate of King Alfonso, the astronomer Aguirre [2] commented: ‘these new discoveries... have been achieved at the expense of simplicity’. The question why nature comes up with a b ...
... has been achieved in the question as to what the related quantities ‘dark matter’ and ‘dark energy’ do really mean. A soulmate of King Alfonso, the astronomer Aguirre [2] commented: ‘these new discoveries... have been achieved at the expense of simplicity’. The question why nature comes up with a b ...
Spiral structure of the Third Galactic Quadrant and the solution to the
... post main-sequence is ascribed to heavy contamination by the Galactic field population. We have recently found (Carraro et al. 2005) that the BP is actually composed of a young population less than 100 Myr old. Except for the cluster sequence which is well detached from the rest of the stars, the CM ...
... post main-sequence is ascribed to heavy contamination by the Galactic field population. We have recently found (Carraro et al. 2005) that the BP is actually composed of a young population less than 100 Myr old. Except for the cluster sequence which is well detached from the rest of the stars, the CM ...
Module 11.1.1: Galaxies: Morphology and the Hubble Sequence
... Module 11.1.2: Galaxies: Morphology and the Hubble Sequence, Part 2 [slide 9] Now, between elliptical and spiral galaxies Hubble introduced the intermediate type S0's, which are galaxies that obviously ha ...
... Module 11.1.2: Galaxies: Morphology and the Hubble Sequence, Part 2 [slide 9] Now, between elliptical and spiral galaxies Hubble introduced the intermediate type S0's, which are galaxies that obviously ha ...
IR Universe
... New Star Cluster Stars are often form in groups called star clusters. The stars in a cluster will usually move slowly away from each other as they age. Many new star clusters are still partially hidden by the dust and gas leftover from star formation, making them more difficult to view in visible ...
... New Star Cluster Stars are often form in groups called star clusters. The stars in a cluster will usually move slowly away from each other as they age. Many new star clusters are still partially hidden by the dust and gas leftover from star formation, making them more difficult to view in visible ...
Galaxy / Cluster Ecosystem Ming Sun (University of Alabama in Huntsville)
... Galaxy’svelocity vs.Perseus’s: + 2170 km/s --Mach number of ~ 3 --- a Bullet galaxy ! Soft X-ray Radio Optical Sun, Jerius & Jones 2005 ...
... Galaxy’svelocity vs.Perseus’s: + 2170 km/s --Mach number of ~ 3 --- a Bullet galaxy ! Soft X-ray Radio Optical Sun, Jerius & Jones 2005 ...
20_LectureOutline
... flash before the star is once again in equilibrium. • The star develops a nonburning carbon core, surrounded by shells burning helium and hydrogen. • The shell expands into a planetary nebula, and the core is visible as a white dwarf. • The nebula dissipates, and the white dwarf gradually cools off. ...
... flash before the star is once again in equilibrium. • The star develops a nonburning carbon core, surrounded by shells burning helium and hydrogen. • The shell expands into a planetary nebula, and the core is visible as a white dwarf. • The nebula dissipates, and the white dwarf gradually cools off. ...
Part IV: Stars
... by comparing their predictions for the radius, surface temperature, and luminosity, as well as other observable parameters generated by studying helioseismology. Helioseismology allows us to probe the conditions in the solar interior. The models make testable predictions that allow us to explain the ...
... by comparing their predictions for the radius, surface temperature, and luminosity, as well as other observable parameters generated by studying helioseismology. Helioseismology allows us to probe the conditions in the solar interior. The models make testable predictions that allow us to explain the ...
powerpoint - High Energy Physics at Wayne State
... The Milky Way Sun is ~ 30000 LY from the center of our Galaxy. From our location within the galaxy, we cannot see through its far rim because the space between stars is not empty – interstellar dust or gas which absorbs visible light. The interstellar gas is the fuel for the formation of stars. Yet ...
... The Milky Way Sun is ~ 30000 LY from the center of our Galaxy. From our location within the galaxy, we cannot see through its far rim because the space between stars is not empty – interstellar dust or gas which absorbs visible light. The interstellar gas is the fuel for the formation of stars. Yet ...
BRC_prop1 - CoolWiki
... and dust found in abundance within disk components of spiral galaxies. Star formation may be triggered in a molecular cloud that is already contracting by shock waves from a variety of sources, including explosion of supernovae, ignition of a very hot star nearby, collision with another molecular cl ...
... and dust found in abundance within disk components of spiral galaxies. Star formation may be triggered in a molecular cloud that is already contracting by shock waves from a variety of sources, including explosion of supernovae, ignition of a very hot star nearby, collision with another molecular cl ...