In this paper, the current status of evolution of massive stars undergoing mass loss by stellar wind is briefly summ a rized. The comparison between theoretical results and current observational information is discussed, and several still u n understood aspects of the problem pointed out....
Astrometry has been obtained for 34 very low-mass (VLM) stars, one white dwarf, and a serendipitously discovered proper motion star. Sixteen of these stars have new (or improved) parallaxes and proper motions, and a further eighteen have proper motions alone. Common proper motions have also ...
Variable Stars and the Distance Scale.- Extensions of the Wilson-Bappu Effect Among Very Luminous Stars.- Statistical HR Diagrams for One Hundred and Fifteen Thousand Proper-Motion Stars.- The Absolute Calibration of the HR Diagram: Fundamental Effective Temperatures and Bolometric Corrections.- II....
STARS: FUNDAMENTAL PARAMETERSHERTZSPRUNG-RUSSELL (HR) DIAGRAMSTARS: MASS LOSSSTARS: WOLF-RAYETAdopting the ``standard model'' for Wolf-Rayet atmospheres, ... WR Hamann,L Koesterke - 《Astronomy & Astrophysics》 被引量: 89发表: 1998年 Movie stars and box office revenues: an empirical analysis ...
Main-sequence stars ➢ produce enough energy in the core ➢ fusion of hydrogen into helium Practice The diagram below shows the position of two main-sequence stars A and B with respect to the labelled axes of a Hertzsprung-Russell diagram. Which star has the larger mass? Why? luminosity ...
D Venn diagram illustrating the number of differentially enriched genes in the OHT screen of MCF7 cells (MCF7-OHT), the FVE screen of MCF7 cells (MCF7-FVE), and the OHT screen of T47D cells (T47D-OHT). T47D-OHT represents our CRISPR screening results, while MCF7-OHT and MCF7...
Alternativelyifthepollutionofthestarby metalsresultsinalargechangeinthepositionofthestarontheHRdiagraminadirectionperpendicular totheisochrone,thenthelowscatterofstarsintheHyadescanbeusedtoplaceconstraintsonquantity ofhigh-Zmaterialthatcouldhavepollutedthestars. 1.introduction Bothspectroscopicstudies(e.g.Snedenetal....
The low-mass companion of HR 5171 A is very close to the primary star that is embedded within its dense wind. Tight constraints on the inclination and v sin i of the primary are lacking, which prevents us from determining its influence precisely on the mass-loss phenomenon, but the system...
Okotox. 4 (6) 1992 353 Geffihrdungsabsch~itzung Riistungsaltlasten Die Konzentrations-/Zeit-Diagramme der Mef~stellen zei- gen sowohl fiir einzelne Nitroaromaten als auch for die po- laren aromatischen Amine einen chaotischen Verlauf; es werden Schwankungen bis zum Faktor hundert fest...
Diagram showing that CaP-RR cells are associated with the induction of cell cycle redistribution, inactivation of apoptosis proteins, activation of cell cycle checkpoint, autophagy, DSB, NHEJ and HR DNA repair pathway proteins compared with CaP cells (control) Full size image Figure 5 Diagram showin...