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First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR8799 exoplanetary system

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Title: First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR8799 exoplanetary system
Authors: Zurlo, A., Vigan, A., Galicher, R., Maire, A. -L., Mesa, D., Gratton, R., Chauvin, G., Kasper, M., Moutou, C., Bonnefoy, M., Desidera, S., Abe, L., Apai, D., Baruffolo, A., Baudoz, P., Baudrand, J., Beuzit, J. -L., Blancard, P., Boccaletti, A., Cantalloube, F., Carle, M., Charton, J., Claudi, R. U., Costille, A., de Caprio, V., Dohlen, K., Dominik, C., Fantinel, D., Feautrier, P., Feldt, M., Fusco, T., Gascone, E., Gigan, P., Girard, J. H., Gissler, D., Gluck, L., Gry, C., Henning, T., Hugot, E., Janson, M., Jacquet, M., Lagrange, A. -M., Langlois, M., Llored, M., Made, F., Magnard, Y., Martinez, P., Maurel, D., Mawet, D., Meyer, M. R., Milli, J., Moeller-Nilsson, O., Mouillet, D., Origné, A., Pavlov, A., Petit, C., Puget, P., Quanz, S. P., Rabou, P., Ramos, J., Roux, A., Salasnich, B., Salter, G., Sauvage, J. -F., Schmid, H. M., Soenke, C., Stadler, E., Suarez, M., Turatto, M., Udry, S., Vakili, F., Wahhaj, Z., Wildi, F.
Source: Astronomy & Astrophysics, Volume 587, id.A57, 13 pp., 2016
Publication Year: 2015
Collection: Astrophysics
Subject Terms: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
More Details: The planetary system discovered around the young A-type HR8799 provides a unique laboratory to: a) test planet formation theories, b) probe the diversity of system architectures at these separations, and c) perform comparative (exo)planetology. We present and exploit new near-infrared images and integral-field spectra of the four gas giants surrounding HR8799 obtained with SPHERE, the new planet finder instrument at the Very Large Telescope, during the commissioning and science verification phase of the instrument (July-December 2014). With these new data, we contribute to completing the spectral energy distribution of these bodies in the 1.0-2.5 $\mu$m range. We also provide new astrometric data, in particular for planet e, to further constrain the orbits. We used the infrared dual-band imager and spectrograph (IRDIS) subsystem to obtain pupil-stabilized, dual-band $H2H3$ (1.593 $\mu$m, 1.667 $\mu$m), $K1K2$ (2.110 $\mu$m, 2.251 $\mu$m), and broadband $J$ (1.245 $\mu$m) images of the four planets. IRDIS was operated in parallel with the integral field spectrograph (IFS) of SPHERE to collect low-resolution ($R\sim30$), near-infrared (0.94-1.64 $\mu$m) spectra of the two innermost planets HR8799d and e. The data were reduced with dedicated algorithms, such as the Karhunen-Lo\`eve image projection (KLIP), to reveal the planets. We used the so-called negative planets injection technique to extract their photometry, spectra, and measure their positions. We illustrate the astrometric performance of SPHERE through sample orbital fits compatible with SPHERE and literature data.
Comment: 13 pages, 12 figures. Published in A&A
Document Type: Working Paper
DOI: 10.1051/0004-6361/201526835
Access URL: http://arxiv.org/abs/1511.04083
Accession Number: edsarx.1511.04083
Database: arXiv
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  Data: The planetary system discovered around the young A-type HR8799 provides a unique laboratory to: a) test planet formation theories, b) probe the diversity of system architectures at these separations, and c) perform comparative (exo)planetology. We present and exploit new near-infrared images and integral-field spectra of the four gas giants surrounding HR8799 obtained with SPHERE, the new planet finder instrument at the Very Large Telescope, during the commissioning and science verification phase of the instrument (July-December 2014). With these new data, we contribute to completing the spectral energy distribution of these bodies in the 1.0-2.5 $\mu$m range. We also provide new astrometric data, in particular for planet e, to further constrain the orbits. We used the infrared dual-band imager and spectrograph (IRDIS) subsystem to obtain pupil-stabilized, dual-band $H2H3$ (1.593 $\mu$m, 1.667 $\mu$m), $K1K2$ (2.110 $\mu$m, 2.251 $\mu$m), and broadband $J$ (1.245 $\mu$m) images of the four planets. IRDIS was operated in parallel with the integral field spectrograph (IFS) of SPHERE to collect low-resolution ($R\sim30$), near-infrared (0.94-1.64 $\mu$m) spectra of the two innermost planets HR8799d and e. The data were reduced with dedicated algorithms, such as the Karhunen-Lo\`eve image projection (KLIP), to reveal the planets. We used the so-called negative planets injection technique to extract their photometry, spectra, and measure their positions. We illustrate the astrometric performance of SPHERE through sample orbital fits compatible with SPHERE and literature data.<br />Comment: 13 pages, 12 figures. Published in A&A
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          Name:
            NameFull: Quanz, S. P.
      – PersonEntity:
          Name:
            NameFull: Rabou, P.
      – PersonEntity:
          Name:
            NameFull: Ramos, J.
      – PersonEntity:
          Name:
            NameFull: Roux, A.
      – PersonEntity:
          Name:
            NameFull: Salasnich, B.
      – PersonEntity:
          Name:
            NameFull: Salter, G.
      – PersonEntity:
          Name:
            NameFull: Sauvage, J. -F.
      – PersonEntity:
          Name:
            NameFull: Schmid, H. M.
      – PersonEntity:
          Name:
            NameFull: Soenke, C.
      – PersonEntity:
          Name:
            NameFull: Stadler, E.
      – PersonEntity:
          Name:
            NameFull: Suarez, M.
      – PersonEntity:
          Name:
            NameFull: Turatto, M.
      – PersonEntity:
          Name:
            NameFull: Udry, S.
      – PersonEntity:
          Name:
            NameFull: Vakili, F.
      – PersonEntity:
          Name:
            NameFull: Wahhaj, Z.
      – PersonEntity:
          Name:
            NameFull: Wildi, F.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 12
              M: 11
              Type: published
              Y: 2015
ResultId 1