arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1407.4469astro-ph.EP
收藏

用双子座行星成像仪观测大质量气体巨行星β Picaib的第一个H波段光谱

The First H-band Spectrum of the Massive Gas Giant Planet beta Pictoris b with the Gemini Planet Imager

Jeffrey Chilcote, Travis Barman, Michael P. Fitzgerald, James R. Graham, James E. Larkin, Bruce Macintosh, Brian Bauman, Adam S. Burrows, Andrew Cardwell, Rober… 展开作者

Jeffrey Chilcote, Travis Barman, Michael P. Fitzgerald, James R. Graham, James E. Larkin, Bruce Macintosh, Brian Bauman, Adam S. Burrows, Andrew Cardwell, Robert J. De Rosa, Daren Dillon, Rene Doyon, Jennifer Dunn, Darren Erikson, Donald Gavel, Stephen J. Goodsell, Markus Hartung, Pascale Hibon, Patrick Ingraham, Paul Kalas, Quinn Konopacky, Jérôme Maire, Franck Marchis, Mark S. Marley, Christian Marois, Max Millar-Blanchaer, Katie Morzinski, Andrew Norton, B. R. Oppenheimer, David Palmer, Jennifer Patience, Marshall D. Perrin, Lisa Poyneer, Laurent Pueyo, Fredrik Rantakyrö, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Andrew Serio, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Sloane J. Wiktorowicz, Schuyler Wolff

摘要:

使用最近安装的双子座行星成像仪(GPI),我们已经采取了第一个H波段光谱的行星伴侣附近的年轻恒星β风景如画。GPI的目的是成像和提供木星大小的低分辨率光谱,在年轻的附近恒星周围的自发光行星同伴。这些观察是在H波段(1.65微米)进行的。该光谱的分辨能力为$\sim$ 45,显示了一个表面重力较低的冷亚恒星物体的独特三角形形状。利用大气模式,我们发现一个有效的温度$1650 \pm 50$ K和表面重力$\log(g) = 4.0 \pm 0.25$(cgs单位)。这些值与行星演化模型的预测吻合得很好,该模型预测的气体巨星质量在10到12 $M_{\rm Jup}$之间,年龄在10到20百万年之间。

英文摘要:

Using the recently installed Gemini Planet Imager (GPI), we have taken the first H-band spectrum of the planetary companion to the nearby young star beta Pictoris. GPI is designed to image and provide low-resolution spectra of Jupiter sized, self-luminous planetary companions around young nearby stars. These observations were taken covering the H-band (1.65 microns). The spectrum has a resolving power of $\sim$ 45 and demonstrates the distinctive triangular shape of a cool substellar object with low surface gravity. Using atmospheric models, we find an effective temperature of $1650 \pm 50$ K and a surface gravity of $\log(g) = 4.0 \pm 0.25$ (cgs units). These values agree well with predictions from planetary evolution models for a gas giant with mass between 10 and 12 $M_{\rm Jup}$ and age between 10 and 20 Myrs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑