H-BAND IMAGE OF A PLANETARY COMPANION AROUND HR 8799 IN 2002

被引：29

作者：

Fukagawa, Misato ^{[1
]}

Itoh, Yoichi ^{[2
]}

Tamura, Motohide ^{[3
,4
]}

Oasa, Yumiko ^{[2
]}

Hayashi, Saeko S. ^{[4
,5
]}

Fujita, Yutaka ^{[1
]}

Shibai, Hiroshi ^{[1
]}

Hayashi, Masahiko ^{[4
,5
]}

机构：

[1] Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Osaka 5600043, Japan

[2] Kobe Univ, Grad Sch Sci, Nada Ku, Kobe, Hyogo 6578501, Japan

[3] Grad Univ Adv Studies SOKENDAI, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan

[4] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[5] Natl Inst Nat Sci, Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2009年 / 696卷 / 01期

基金：

美国国家科学基金会;

关键词：

planetary systems; stars: individual (HR 8799); YOUNG BROWN DWARF;

D O I：

10.1088/0004-637X/696/1/L1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The discovery of three planetary companions around HR 8799 marked a significant epoch in direct imaging of extrasolar planets. Given the importance of this system, we re-analyzed H-band images of HR 8799 obtained with the Subaru 36-elements adaptive optics (AO) in 2002 July. The low-order AO imaging combined with the classical point-spread function (PSF) subtractions even revealed the extrasolar planet, HR 8799b. Our observations in 2002 confirmed that it has been orbiting HR 8799 in a counterclockwise direction. The flux of HR 8799b was consistent with those in the later epochs within the uncertainty of 0.25 mag, further supporting the planetary mass estimate by Marois et al.

引用

页码：L1 / L5

页数：5

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