The β Pictoris disk imaged by Herschel PACS and SPIRE

B. Vandenbussche, B. Sibthorpe, B. Acke, E. Pantin, G. Olofsson, C. Waelkens, C. Dominik, M. J. Barlow, J. A. D. L. Blommaert, J. Bouwman, A. Brandeker, M. Cohen, W. De Meester, W. R.F. Dent, K. Exter, J. Di Francesco, M. Fridlund, W. K. Gear, A. M. Glauser, H. L. Gomez & 23 others J. S. Greaves, P. C. Hargrave, P. M. Harvey, Th Henning, A. M. Heras, M. R. Hogerheijde, W. S. Holland, R. Huygen, R. J. Ivison, C. Jean, S. J. Leeks, T. L. Lim, R. Liseau, B. C. Matthews, D. A. Naylor, G. L. Pilbratt, E. T. Polehampton, S. Regibo, P. Royer, A. Sicilia-Aguilar, B. M. Swinyard, H. Walker, R. Wesson

Research output: Contribution to journalLetter

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Abstract

We obtained Herschel PACS and SPIRE images of the thermal emission of the debris disk around the A5V star β Pic. The disk is well resolved in the PACS filters at 70, 100, and 160 μm. The surface brightness profiles between 70 and 160 μm show no significant asymmetries along the disk, and are compatible with 90% of the emission between 70 and 160 μm originating in a region closer than 200 AU to the star. Although only marginally resolving the debris disk, the maps obtained in the SPIRE 250-500 μm filters provide full-disk photometry, completing the SED over a few octaves in wavelength that had been previously inaccessible. The small far-infrared spectral index (β = 0.34) indicates that the grain size distribution in the inner disk (<200 AU) is inconsistent with a local collisional equilibrium. The size distribution is either modified by non-equilibrium effects, or exhibits a wavy pattern, caused by an under-abundance of impactors which have been removed by radiation pressure.

Original languageEnglish
Article numberL133
Pages (from-to)1-7
Number of pages7
JournalAstronomy and Astrophysics
Volume518
Issue number7-8
DOIs
Publication statusPublished - 16 Jul 2010

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filter
asymmetry
grain size
wavelength
debris
filters
stars
impactors
octaves
radiation pressure
thermal emission
photometry
brightness
profiles
wavelengths
radiation
impactor
index
effect

Keywords

  • Circumstellar matter
  • Planetary systems
  • Stars: early-type
  • Stars: individual: β Pic

Cite this

Vandenbussche, B., Sibthorpe, B., Acke, B., Pantin, E., Olofsson, G., Waelkens, C., ... Wesson, R. (2010). The β Pictoris disk imaged by Herschel PACS and SPIRE. Astronomy and Astrophysics, 518(7-8), 1-7. [L133]. https://doi.org/10.1051/0004-6361/201014626
Vandenbussche, B. ; Sibthorpe, B. ; Acke, B. ; Pantin, E. ; Olofsson, G. ; Waelkens, C. ; Dominik, C. ; Barlow, M. J. ; Blommaert, J. A. D. L. ; Bouwman, J. ; Brandeker, A. ; Cohen, M. ; De Meester, W. ; Dent, W. R.F. ; Exter, K. ; Di Francesco, J. ; Fridlund, M. ; Gear, W. K. ; Glauser, A. M. ; Gomez, H. L. ; Greaves, J. S. ; Hargrave, P. C. ; Harvey, P. M. ; Henning, Th ; Heras, A. M. ; Hogerheijde, M. R. ; Holland, W. S. ; Huygen, R. ; Ivison, R. J. ; Jean, C. ; Leeks, S. J. ; Lim, T. L. ; Liseau, R. ; Matthews, B. C. ; Naylor, D. A. ; Pilbratt, G. L. ; Polehampton, E. T. ; Regibo, S. ; Royer, P. ; Sicilia-Aguilar, A. ; Swinyard, B. M. ; Walker, H. ; Wesson, R. / The β Pictoris disk imaged by Herschel PACS and SPIRE. In: Astronomy and Astrophysics. 2010 ; Vol. 518, No. 7-8. pp. 1-7.
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title = "The β Pictoris disk imaged by Herschel PACS and SPIRE",
abstract = "We obtained Herschel PACS and SPIRE images of the thermal emission of the debris disk around the A5V star β Pic. The disk is well resolved in the PACS filters at 70, 100, and 160 μm. The surface brightness profiles between 70 and 160 μm show no significant asymmetries along the disk, and are compatible with 90{\%} of the emission between 70 and 160 μm originating in a region closer than 200 AU to the star. Although only marginally resolving the debris disk, the maps obtained in the SPIRE 250-500 μm filters provide full-disk photometry, completing the SED over a few octaves in wavelength that had been previously inaccessible. The small far-infrared spectral index (β = 0.34) indicates that the grain size distribution in the inner disk (<200 AU) is inconsistent with a local collisional equilibrium. The size distribution is either modified by non-equilibrium effects, or exhibits a wavy pattern, caused by an under-abundance of impactors which have been removed by radiation pressure.",
keywords = "Circumstellar matter, Planetary systems, Stars: early-type, Stars: individual: β Pic",
author = "B. Vandenbussche and B. Sibthorpe and B. Acke and E. Pantin and G. Olofsson and C. Waelkens and C. Dominik and Barlow, {M. J.} and Blommaert, {J. A. D. L.} and J. Bouwman and A. Brandeker and M. Cohen and {De Meester}, W. and Dent, {W. R.F.} and K. Exter and {Di Francesco}, J. and M. Fridlund and Gear, {W. K.} and Glauser, {A. M.} and Gomez, {H. L.} and Greaves, {J. S.} and Hargrave, {P. C.} and Harvey, {P. M.} and Th Henning and Heras, {A. M.} and Hogerheijde, {M. R.} and Holland, {W. S.} and R. Huygen and Ivison, {R. J.} and C. Jean and Leeks, {S. J.} and Lim, {T. L.} and R. Liseau and Matthews, {B. C.} and Naylor, {D. A.} and Pilbratt, {G. L.} and Polehampton, {E. T.} and S. Regibo and P. Royer and A. Sicilia-Aguilar and Swinyard, {B. M.} and H. Walker and R. Wesson",
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Vandenbussche, B, Sibthorpe, B, Acke, B, Pantin, E, Olofsson, G, Waelkens, C, Dominik, C, Barlow, MJ, Blommaert, JADL, Bouwman, J, Brandeker, A, Cohen, M, De Meester, W, Dent, WRF, Exter, K, Di Francesco, J, Fridlund, M, Gear, WK, Glauser, AM, Gomez, HL, Greaves, JS, Hargrave, PC, Harvey, PM, Henning, T, Heras, AM, Hogerheijde, MR, Holland, WS, Huygen, R, Ivison, RJ, Jean, C, Leeks, SJ, Lim, TL, Liseau, R, Matthews, BC, Naylor, DA, Pilbratt, GL, Polehampton, ET, Regibo, S, Royer, P, Sicilia-Aguilar, A, Swinyard, BM, Walker, H & Wesson, R 2010, 'The β Pictoris disk imaged by Herschel PACS and SPIRE', Astronomy and Astrophysics, vol. 518, no. 7-8, L133, pp. 1-7. https://doi.org/10.1051/0004-6361/201014626

The β Pictoris disk imaged by Herschel PACS and SPIRE. / Vandenbussche, B.; Sibthorpe, B.; Acke, B.; Pantin, E.; Olofsson, G.; Waelkens, C.; Dominik, C.; Barlow, M. J.; Blommaert, J. A. D. L.; Bouwman, J.; Brandeker, A.; Cohen, M.; De Meester, W.; Dent, W. R.F.; Exter, K.; Di Francesco, J.; Fridlund, M.; Gear, W. K.; Glauser, A. M.; Gomez, H. L.; Greaves, J. S.; Hargrave, P. C.; Harvey, P. M.; Henning, Th; Heras, A. M.; Hogerheijde, M. R.; Holland, W. S.; Huygen, R.; Ivison, R. J.; Jean, C.; Leeks, S. J.; Lim, T. L.; Liseau, R.; Matthews, B. C.; Naylor, D. A.; Pilbratt, G. L.; Polehampton, E. T.; Regibo, S.; Royer, P.; Sicilia-Aguilar, A.; Swinyard, B. M.; Walker, H.; Wesson, R.

In: Astronomy and Astrophysics, Vol. 518, No. 7-8, L133, 16.07.2010, p. 1-7.

Research output: Contribution to journalLetter

TY - JOUR

T1 - The β Pictoris disk imaged by Herschel PACS and SPIRE

AU - Vandenbussche, B.

AU - Sibthorpe, B.

AU - Acke, B.

AU - Pantin, E.

AU - Olofsson, G.

AU - Waelkens, C.

AU - Dominik, C.

AU - Barlow, M. J.

AU - Blommaert, J. A. D. L.

AU - Bouwman, J.

AU - Brandeker, A.

AU - Cohen, M.

AU - De Meester, W.

AU - Dent, W. R.F.

AU - Exter, K.

AU - Di Francesco, J.

AU - Fridlund, M.

AU - Gear, W. K.

AU - Glauser, A. M.

AU - Gomez, H. L.

AU - Greaves, J. S.

AU - Hargrave, P. C.

AU - Harvey, P. M.

AU - Henning, Th

AU - Heras, A. M.

AU - Hogerheijde, M. R.

AU - Holland, W. S.

AU - Huygen, R.

AU - Ivison, R. J.

AU - Jean, C.

AU - Leeks, S. J.

AU - Lim, T. L.

AU - Liseau, R.

AU - Matthews, B. C.

AU - Naylor, D. A.

AU - Pilbratt, G. L.

AU - Polehampton, E. T.

AU - Regibo, S.

AU - Royer, P.

AU - Sicilia-Aguilar, A.

AU - Swinyard, B. M.

AU - Walker, H.

AU - Wesson, R.

PY - 2010/7/16

Y1 - 2010/7/16

N2 - We obtained Herschel PACS and SPIRE images of the thermal emission of the debris disk around the A5V star β Pic. The disk is well resolved in the PACS filters at 70, 100, and 160 μm. The surface brightness profiles between 70 and 160 μm show no significant asymmetries along the disk, and are compatible with 90% of the emission between 70 and 160 μm originating in a region closer than 200 AU to the star. Although only marginally resolving the debris disk, the maps obtained in the SPIRE 250-500 μm filters provide full-disk photometry, completing the SED over a few octaves in wavelength that had been previously inaccessible. The small far-infrared spectral index (β = 0.34) indicates that the grain size distribution in the inner disk (<200 AU) is inconsistent with a local collisional equilibrium. The size distribution is either modified by non-equilibrium effects, or exhibits a wavy pattern, caused by an under-abundance of impactors which have been removed by radiation pressure.

AB - We obtained Herschel PACS and SPIRE images of the thermal emission of the debris disk around the A5V star β Pic. The disk is well resolved in the PACS filters at 70, 100, and 160 μm. The surface brightness profiles between 70 and 160 μm show no significant asymmetries along the disk, and are compatible with 90% of the emission between 70 and 160 μm originating in a region closer than 200 AU to the star. Although only marginally resolving the debris disk, the maps obtained in the SPIRE 250-500 μm filters provide full-disk photometry, completing the SED over a few octaves in wavelength that had been previously inaccessible. The small far-infrared spectral index (β = 0.34) indicates that the grain size distribution in the inner disk (<200 AU) is inconsistent with a local collisional equilibrium. The size distribution is either modified by non-equilibrium effects, or exhibits a wavy pattern, caused by an under-abundance of impactors which have been removed by radiation pressure.

KW - Circumstellar matter

KW - Planetary systems

KW - Stars: early-type

KW - Stars: individual: β Pic

UR - http://www.scopus.com/inward/record.url?scp=77957833804&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201014626

DO - 10.1051/0004-6361/201014626

M3 - Letter

VL - 518

SP - 1

EP - 7

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 7-8

M1 - L133

ER -

Vandenbussche B, Sibthorpe B, Acke B, Pantin E, Olofsson G, Waelkens C et al. The β Pictoris disk imaged by Herschel PACS and SPIRE. Astronomy and Astrophysics. 2010 Jul 16;518(7-8):1-7. L133. https://doi.org/10.1051/0004-6361/201014626