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发表于 2025-3-21 17:34:36
书目名称Kinematics, Dynamics and Structure of the Milky Way影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0543030<br><br> <br><br>书目名称Kinematics, Dynamics and Structure of the Milky Way读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0543030<br><br> <br><br>
轻推
发表于 2025-3-21 21:40:46
The Coordination of Space and Ground-Based Parallax Programs for Improvement of the Stellar Luminoss a maximum at an absolute magnitude of about +6 or nearly one solar mass, and a minimum at slightly fainter values, near one-half solar mass. It has been customary for investigators to adopt the smoothed function of Luyten which increases steadily throughout this range of absolute magnitude. Howeve
Accede
发表于 2025-3-22 03:39:00
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珐琅
发表于 2025-3-22 05:13:12
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锉屑
发表于 2025-3-22 09:15:52
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Encumber
发表于 2025-3-22 14:57:03
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foliage
发表于 2025-3-22 18:10:39
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Gerontology
发表于 2025-3-22 22:51:29
On the Determination of ,,,d the optical observations sample different parts of the Galaxy. The most reliable method for determining .. seems still to be the direct analysis of the radial velocities of stars with known heliocentric distances. The value so found, R. = 10.4.0.7 kpc, is not sensitive to the form of the velocity
结合
发表于 2025-3-23 04:47:32
The Velocity Fields of Gas and Stars within Five KPC of the Sun, probable value of the line of sight velocity, Vr, of an element at galactic longitude ℓ and distance projected onto the plane of the galactic disk r = d • cos(b), where d is the distance to the object, can be represented as;.where the coefficients are determined by a least squares fit.
感染
发表于 2025-3-23 06:28:58
A Comparison of the Velocity Fields of Young Stellar Objects and of Sharpless H II Regions,sible to represent the radial component of the smooth field by a formula with a small number of parameters, which can be derived from the observations by standard statistical methods. This has been performed for 1) a list of 989 O- and B-type stars in the solar neighbourhood for which the distance a