Figure 2 from The Gray Needle: Large Grains in the HD 15115 Debris Disk from LBT/PISCES/Ks and LBTI/LMIRcam/L′ Adaptive Optics Imaging

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The Gray Needle: Large Grains in the HD 15115 Debris Disk from LBT/PISCES/Ks and LBTI/LMIRcam/L′ Adaptive Optics Imaging

Authors: Timothy J. Rodigas, Philip M. Hinz, Jarron Leisenring, Vidhya Vaitheeswaran, Andrew J. Skemer, Michael Skrutskie, Kate Y. L. Su, Vanessa Bailey, Glenn Schneider, Laird Close, Filippo Mannucci, Simone Esposito, Carmelo Arcidiacono, Enrico Pinna, Javier Argomedo, Guido Agapito, Daniel Apai, Giuseppe Bono, Kostantina Boutsia, Runa Briguglio, Guido Brusa, Lorenzo Busoni, Giovanni Cresci, Thayne Currie, Silvano Desidera, Josh Eisner, Renato Falomo, Luca Fini, Kate Follette, Adriano Fontana, Peter Garnavich, Raffaele Gratton, Richard Green, Juan Carlos Guerra, J. M. Hill, William F. Hoffmann, Terry J. Jones, Megan Krejny, Craig Kulesa, Jared Males, Elena Masciadri, Dino Mesa, Don McCarthy, Michael Meyer, Doug Miller, Matthew J. Nelson, Alfio Puglisi, Fernando Quiros-Pacheco, Armando Riccardi, Eleonora Sani, Paolo Stefanini, Vincenzo Testa, John Wilson, Charles E. Woodward, and Marco Xompero

Rodigas et al. 2012 The Astrophysical Journal 752 57.

Provider: AAS Journals

Caption: Figure 2.

(a) Final L′ image of the disk obtained with LMIRcam, in units of mJy arcsec ⁻², with north up, east left. The white dot marks the location of the star and represents the size of a resolution element at L′. For display purposes, a 0 farcs 9 radius mask has been added in post-processing. The image has been smoothed by a Gaussian kernel with FWHM = λ/D and binned by a factor of four to bring out the disk. At L′ the disk is mostly symmetric and is equally bright on both sides. These features are nearly opposite to what is seen at the Ks band and at shorter wavelengths. (b) SNRE map of the final L′ image shown above. The disk is detected at SNRE ~ 2.5 between ~1 and 1 farcs 5 on both sides.

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