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FIVE DEBRIS DISKS NEWLY REVEALED IN SCATTERED LIGHT FROM THE HUBBLE SPACE TELESCOPE NICMOS ARCHIVE
被引:61
|作者:
Soummer, Remi
[1
]
Perrin, Marshall D.
[1
]
Pueyo, Laurent
[1
,2
]
Choquet, Elodie
[1
]
Chen, Christine
[1
]
Golimowski, David A.
[1
]
Hagan, J. Brendan
[1
]
Mittal, Tushar
[2
]
Moerchen, Margaret
[1
]
N'Diaye, Mamadou
[1
]
Rajan, Abhijith
[3
]
Wolff, Schuyler
[1
]
Debes, John
[1
]
Hines, Dean C.
[1
]
Schneider, Glenn
[4
]
机构:
[1] Space Telescope Sci Inst, Baltimore, MD 21218 USA
[2] Johns Hopkins Univ, Baltimore, MD 21218 USA
[3] Arizona State Univ, Phoenix, AZ 85004 USA
[4] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
关键词:
stars:;
individual;
(HD;
30447;
HD;
35841;
141943;
191089;
202917);
techniques: image processing;
PRE-MAIN-SEQUENCE;
HR;
8799;
B;
AU MICROSCOPII;
DIFFERENTIAL ROTATION;
CIRCUMSTELLAR DISK;
MAGNETIC-FIELDS;
BETA-PICTORIS;
EVOLUTION;
NEARBY;
DISCOVERY;
D O I:
10.1088/2041-8205/786/2/L23
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
We have spatially resolved five debris disks (HD 30447, HD 35841, HD 141943, HD 191089, and HD 202917) for the first time in near-infrared scattered light by reanalyzing archival Hubble Space Telescope (HST)/NICMOS coronagraphic images obtained between 1999 and 2006. One of these disks (HD 202917) was previously resolved at visible wavelengths using the HST/Advanced Camera for Surveys. To obtain these new disk images, we performed advanced point-spread function subtraction based on the Karhunen-Loeve Image Projection algorithm on recently reprocessed NICMOS datawith improved detector artifact removal (Legacy Archive PSF Library And Circumstellar Environments (LAPLACE) Legacy program). Three of the disks (HD 30447, HD 35841, and HD 141943) appear edge-on, while the other two (HD 191089 and HD 202917) appear inclined. The inclined disks have been sculpted into rings; in particular, the disk around HD 202917 exhibits strong asymmetries. All five host stars are young (8-40 Myr), nearby (40-100 pc) F and G stars, and one (HD 141943) is a close analog to the young Sun during the epoch of terrestrial planet formation. Our discoveries increase the number of debris disks resolved in scattered light from 19 to 23 (a 21% increase). Given their youth, proximity, and brightness (V = 7.2-8.5), these targets are excellent candidates for follow-up investigations of planet formation at visible wavelengths using the HST/Space Telescope Imaging Spectrograph coronagraph, at near-infrared wavelengths with the Gemini Planet Imager and Very Large Telescope/SPHERE, and at thermal infrared wavelengths with the James Webb Space Telescope NIRCam and MIRI coronagraphs.
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