Standing Conference of Astronomy Professors     

Prof.  Mike Bode  Prof.  Phil Charles 《Astronomy& Geophysics》2000,41(1):1.27-1.28

The Chair Mike Bode and the Secretary Phil Charles bring the minutes of the 13 October 1999 meeting of the Standing Conference of Astronomy Professors, attended by representatives of 11 universities.  相似文献   

滇西保山地块金厂河Fe- Cu- Pb- Zn矽卡岩型多金属矿床黑柱石成因及地质意义     

陆波德  刘学龙  周云满  赵成峰  王基元  李方兰  李庆锐  王海  李守奎  曹振梁  周杰虎 《地质学报》2024,98(4):1164-1182

黑柱石是一种矽卡岩型铅锌及铁矿床中少见的矿物,与铅锌矿体、磁铁矿体关系密切。为查明黑柱石成矿过程中与铅锌铁铜多金属成矿作用的关系,本文对金厂河Fe- Cu- Pb- Zn多金属矿床中的黑柱石产状、矿物共生组合、化学成分、分带性等开展了研究。根据电子探针数据计算可得,金厂河矿区黑柱石的化学式为:Ca0. 95- 1. 08(Fe0. 87- 1. 97Mn0. 08- 0. 36Mg0. 01- 0. 06)2+(1. 89- 2. 03)(Fe0. 82- 1. 04Al0. 01- 0. 03)3+(0. 88- 1. 15)\[Si1. 94- 2. 08O7\]O(OH)。结合矿物组合类型、产状、分带特征等,推测矿床内矽卡岩由内带逐渐向外带交代的趋势。金厂河矿区主要有3种矿物共生组合：黑柱石+磁铁矿组合,黑柱石+磁铁矿+黄铁矿+黄铜矿组合,黑柱石+方铅矿+闪锌矿+黄铜矿组合,分别对应三个不同的蚀变阶段：晚期矽卡岩阶段（代表组合I）,以石榴子石的分解为主,形成大量的黑柱石;退蚀变阶段（代表组合II）,以阳起石、黄铜矿、黄铁矿发育为主;石英- 硫化物阶段（代表组合III）,以发育大量的方铅矿、闪锌矿为主,同时这一阶段内黑柱石分解,形成阳起石、方解石、磁铁矿等。此外,黑柱石的稀土元素配分模式与石榴子石的类似,一定程度上保留了石榴子石的稀土元素特征。研究认为：黑柱石是早期石榴子石退化分解的产物,矿床自内向外逐渐交代,形成了铅锌铜矿体中以锰质黑柱石为主,而磁铁矿体、铜矿体中以含锰黑柱石为主的分带特性。锰质黑柱石有利于铅锌矿的形成,而对于磁铁矿有贫化的影响,同时也可为矿区揭露中酸性岩体和深部找矿提供重要科学意义。  相似文献   

Stellar and galactic environment survey (SAGE)     

M. A. Barstow  M. R. Burleigh  N. J. Bannister  J. S. Lapington  M. P. Kowalski  R. G. Cruddace  K. S. Wood  F. Auchere  M. F. Bode  G. E. Bromage  B. Gibson  A. C. Cameron  A. Cassatella  F. Delmotte  M.-F. Ravet  J. G. Doyle  C. S. Jeffery  B. Gaensicke  C. Jordan  N. Kappelmann  K. Werner  R. Lallement  D. de Martino  S. A. Matthews  K. J. H. Phillips  G. Del Zanna  M. Orio  E. Pace  I. Pagano  J. H. M. M. Schmitt  B. Y. Welsh 《Astrophysics and Space Science》2009,320(1-3):231-238

This paper describes a proposed high resolution soft X-ray and Extreme Ultraviolet (EUV) spectroscopy mission to carry out a survey of Stellar and Galactic Environments (SAGE). The payload is based on novel diffraction grating technology which has already been proven in a sub-orbital space mission and which is ready to fly on a satellite platform with minimal development. Much of the technical detail of the instrumentation has been reported elsewhere and we concentrate our discussion here on the scientific goals of a SAGE base-line mission, demonstrating the scientific importance of high resolution spectroscopy in the Extreme Ultraviolet for the study of stars and the local interstellar medium.  相似文献   

Stellar And Galactic Environment survey (SAGE)     

M. A. Barstow  M. P. Kowalski  R. G. Cruddace  K. S. Wood  F. Auchere  N. J. Bannister  M. F. Bode  G. E. Bromage  M. R. Burleigh  A. C. Cameron  A. Cassatella  F. Delmotte  J. G. Doyle  B. Gaensicke  B. Gibson  C. S. Jeffery  C. Jordan  N. Kappelmann  R. Lallement  J. S. Lapington  D. de Martino  S. A. Matthews  M. Orio  E. Pace  I. Pagano  K. J. H. Phillips  M.-F. Ravet  J. H. M. M. Schmitt  B. Y. Welsh  K. Werner  G. Del Zanna 《Experimental Astronomy》2009,23(1):169-191

This paper describes a proposed high resolution soft X-ray and Extreme Ultraviolet spectroscopy mission to carry out a survey of Stellar and Galactic Environments (SAGE). The payload is based on novel diffraction grating technology which has already been proven in a sub-orbital space mission and which is ready to fly on a satellite platform with minimal development. We discuss the goals of a SAGE base-line mission and demonstrate the scientific importance of high resolution spectroscopy in the Extreme Ultraviolet for the study of stars and the local interstellar medium.  相似文献   

HST/WFPC2 snapshot imaging of symbiotic stars     

C. Brocksopp  M. F. Bode  S. P. S. Eyres 《Monthly notices of the Royal Astronomical Society》2003,344(4):1264-1270

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云南金厂河铅锌多金属矿床石榴子石U-Pb年龄(502~508 Ma)及其对成矿时代的限定          下载免费PDF全文

李方兰  刘学龙  周云满  赵成峰  王基元  刘益  李庆锐  王海  李守奎  陆波德  曹振梁  周博文  符俊 《中国地质》2022,49(3):997-999

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Comparison of two small-strain concepts: ISA and intergranular strain applied to barodesy     

Tafili  Merita  Medicus  Gertraud  Bode  Manuel  Fellin  Wolfgang 《Acta Geotechnica》2022,17(10):4333-4358

Acta Geotechnica - The intergranular strain concept (IGS) and intergranular strain anisotropy formulation (ISA) are state of the art extensions to describe small-strain effects. The main...  相似文献   

Colliding winds in V1016 Cygni     

S. K. Watson  S. P. S. Eyres  R. J. Davis  M. F. Bode  A. M. S. Richards  H. T. Kenny 《Monthly notices of the Royal Astronomical Society》2000,311(3):449-455

We present MERLIN observations of the symbiotic nova V1016 Cygni made at 6 cm between 1992 and 1997 and at 18 cm in 1993 and 1997. In the 6-cm images we find complex structure which has not been previously seen, in particular three bright components. These components do not appear to be expanding as would be expected from the remains of a hot wind resulting from the nova outburst. The change in positions of two of the features exhibits tentative east–west movement. The brightness temperature of the peak with the highest flux density remains above 50 000 K in all epochs, thereby confirming the presence of shocked material in the system. At 18 cm there is no evidence of any non-thermal emission as might be expected from comparison with a sister star, HM Sge.  相似文献   

Sakurai's object: the ionized nebula at radio wavelengths     

S. P. S. Eyres  A. M. S. Richards  A. Evans  & M. F. Bode 《Monthly notices of the Royal Astronomical Society》1998,297(3):905-909

Sakurai's object (V4334 Sgr) is a planetary nebula nucleus which is undergoing its final helium shell flash. This is the first of these rare and important events to be observable with non-optical instruments. We report the first radio detection, using a short (2-h) observation with the Very Large Array (VLA) at 4.86 GHz. The radio emission structure is coincident with the 34-arcsec diameter planetary nebula seen in optical emission lines. We find a statistical distance ∼ 3.8 ± 0.6 kpc, with a range of 1.9 <  D  < 5.3 kpc, depending on the planetary nebula (PN) mass. While we have no direct evidence for a new (post-flash) stellar wind, we estimate an upper limit to the mass-loss rate due to any such wind of 1.7 × 10⁻⁷ M⊙ yr⁻¹. The number of emitting knots in the radio-visible nebula indicates an electron density of ∼ 2 × 10⁸ m⁻³ in those knots, and a total emitting ionized mass of ∼ 0.15 M⊙, at an assumed distance of 3.8 kpc. The radio flux density indicates an Hβ flux of ∼ 6 × 10⁻¹⁶ W m⁻², suggesting an extinction E ( B  −  V ) ∼ 1.15, comparable with reddening estimates in the direction of V4334 Sgr.  相似文献   

Standing Conference of Astronomy Professors     

Phil Charles  Mike Bode 《Astronomy& Geophysics》2002,43(4):4.31-4.33

Phil Charles and Mike Bode present the minutes of the 13th Standing Conference of Astronomy Professors (SCAP) meeting held at the NAM in Bristol on 12 April. Thirteen universities/groups were represented.  相似文献