与 «EARLY-TYPE STAR»相关的英语书籍
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early-type star的用法。与
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1
New Quests in Stellar Astrophysics: The Link Between Stars ...
The real star has more ultraviolet flux from the poles and more infrared flux from
the equator than the plane-parallel models so the ionizing radiation field around
an early-type star is prolate. It is probably not safe to use any unary early-type
star ...
2
Formation and Evolution of Galaxy Bulges (IAU S245)
... the optical spectrum remains largely unaffected by the minority of stellar mass
that forms in these systems at low and intermediate redshift. As a result it is
virtually impossible to quantify early-type star formation histories (SFHs) over the
last ...
International Astronomical Union. Symposium, Martin Bureau, E. Athanassoula, 2008
We conclude the chapter with a brief discussion of the changes in rotation as an
early-type star evolves off the main sequence. 6.2 Main-sequence models The
main objective of this section is the construction of reliable numerical models of ...
4
Spectroscopic Astrophysics: An Assessment of the ...
It is probable that the emission lines are excited by the radiation of the early-type
star outside its own reversing layer. There may be a departure from spherical
symmetry in the excited layers, owing to the presence of the late-type companion.
5
Accretion Power in Astrophysics
bow shock at a distance r from the centre of the early-type star. Here, ME and RE
are the mass and radius of this star and uesc is the escape velocity at its surface.
For typical parameters uw is a few thousand km s~1 which greatly exceeds the ...
Juhan Frank, Andrew King, Derek Raine, 2002
6
Galactic Radio Astronomy: International Astronomical Union, ...
So maybe here we are dealing with a two-component radio source, one
component due to the envelope surrounding the supergiant in the system and a
variable component associated with the early-type star. We know from the Green
Bank ...
Frank J. Kerr, F. J. Kerr, Simon Christian Simonson, 1974
7
Astronomy and Cosmogony
Even if fission does not occur, such a star becomes a main sequence, and so
probably an early type, star — this explains the existence of O and B-type stars
which are not binaries — but if fission occurs the star not only becomes an early
type ...
... for an early-type star. Figure 10.22 displays the lightcurve of θ1 OriC observed
with the ROSAT HRI. Overlaid on the data is the variation predicted by the MCWS
model for different viewing angles of the magnetosphere and cooling disk.
Joachim E Trümper, Günther Hasinger, 2008
9
An X-ray Study of Massive
Star Forming Regions with CHANDRA.
HD 46150 (O5V) is the visually brightest early type star in the cluster. A two
temperature plasma model fit (kT1 = 0.2 keV, kT2 = 0.6 keV) is needed to
describe the X-ray spectrum, with an absorption column NH = 2.5 × 10 21 cm −2 .
Their X-ray ...
10
A Dictionary of Astronomy
See also HUBBLE CLASSIFICATION. early-type star Any massive, hot star of
spectral type 0, B, or A. The designation 'early' derives from an old, mistaken idea
that stars evolved from being hot and young to cool and old. The term is also
used ...
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Astronomers Directly Image Exoplanet Candidate HD95086 b
Astronomers using ESO's Very Large Telescope have captured an image of a faint object circling the young, dusty, early-type star HD 95086. «Sci-News.com, 六月 13»
Project Icarus: Exploring Exoplanet Biosignatures
Examples might include an early-type star and/or a white dwarf, both of which could be achieved by selecting either Sirius (8.6 light-years ... «Discovery News, 十月 11»
Hyperfast Star HE 0437-5439 Proven To Be Alien
The star, dubbed HE 0437-5439, is an early-type star and one of ten so-called hypervelocity stars so far found speeding away from the Milky ... «Space Daily, 一月 08»
The critical role of disks in the formation of high-mass stars
... of disk life time, which is not only influenced by tidal interactions with the cluster, but also by the powerful ionizing flux of the early-type star. «Nature.com, 十二月 06»
