维普中文期刊产品整合服务
4篇 您的检索式:作者名="BERTR G"
    题名 作者 年代 出处 被引量
1Study of the content of cadmium, chromium and lead in bivalve molluscs of the Pacific Ocean (Maule Region, Chile) 显示文摘Tapia J Vargas-Chacoff L Bertrán C Carrasco G Torres F Pinto R 2010Food Chemistry2010,121,3:1
2High-energy ball milling of AIzO3-TiO2 powders显示文摘COSTE S BERTR G CODD C 2007Journal of Alloys and Compounds2007,,:1
3On the central symmetry of the circumstellar envelope of RS Cnc显示文摘We present a phenomenological study of CO(1–0) and CO(2–1) emission from the circumstellar envelope(CSE) of the Asymptotic Giant Branch(AGB) star RS Cnc. It reveals departures from central symmetry that turn out to be efficient tools for the exploration of some of the properties of the CSE. We use a wind model including a bipolar flow with a typical wind velocity of ~8 km s-1that decreases to~2 km s-1near the equator. This wind model is used to describe Doppler velocity spectral maps obtained by merging data collected at the IRAM Plateau de Bure Interferometer and Pico Veleta single dish radio telescope. Parameters describing the wind morphology and kinematics are obtained, together with the radial dependence of the gas temperature in the domain of the CSE probed by the CO observations.Significant north-south central asymmetries are revealed by the analysis, which we quantify using a simple phenomenological description. The origin of such asymmetries is unclear.Pham Tuyet Nhung Do Thi Hoai Jan Martin Winters Pierre Darriulat Eric Grard Thibaut Le Bertre 2015Research in Astronomy and Astrophysics2015,15,5:0
4HⅠ emission from the red giant Y CVn with the VLA and FAST显示文摘Imaging studies with the Very Large Array(VLA) have revealed H I emission associated with the extended circumstellar shells of red giants. We analyze the spectral map obtained on Y CVn, a J-type carbon star on the Asymptotic Giant Branch. The H I line profiles can be interpreted with a model of a detached shell resulting from the interaction of a stellar outflow with the local interstellar medium.We reproduce the spectral map by introducing a distortion along a direction corresponding to the star's motion in space. We then use this fitting to simulate observations expected from the Five-hundred-meter Aperture Spherical radio Telescope(FAST), and discuss its potential for improving our description of the outer regions of circumstellar shells.Do T.Hoai Pham T.Nhung Lynn D.Matthews Eric Grard Thibaut Le Bertre 2017Research in Astronomy and Astrophysics2017,17,7:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费