Astronomy & Astrophysics manuscript no. BPMG˙PACS˙astroph c ESO 2018 October 13, 2018 Gas and dust in the Beta Pictoris Moving Group as seen by the Herschel Space Observatory.⋆ P. Riviere-Marichalar1,2 , D. Barrado1, B.Montesinos1, G. Duchˆene3,4, H. Bouy1, C. Pinte4, F. Menard4,5, J. Donaldson6, C. Eiroa7, A. V. Krivov8, I. Kamp2, I. Mendigut´ıa9, W. R. F. Dent10, J. Lillo-Box1 1 Centro de Astrobiolog´ıa (INTA–CSIC) – Depto. Astrof´ısica, POB 78, ESAC Campus, 28691 Villanueva de la Ca˜nada, Spain e-mail:
[email protected] 2 Kapteyn Astronomical Institute, P.O. Box 800, 9700 AV Groningen, The Netherlands 3 Astronomy Department, University of California, Berkeley CA 94720-3411 USA 4 UJF-Grenoble 1 / CNRS-INSU, Institut de Plan´etologie et d’Astrophysique (IPAG) UMR 5274, Grenoble, F-38041, France 5 Laboratorio Franco-Chileno de Astronomia (UMI 3386: CNRS – U de Chile / PUC / U Conception), Santiago, Chile 6 Department of Astronomy, University of Maryland, College Park, MD 230742, USA 7 Dep. de F´ısica Te´orica, Fac. de Ciencias, UAM Campus Cantoblanco, 28049 Madrid, Spain 8 Astrophysikalisches Institut und Universit¨atssternwarte, Friedrich-Schiller-Universit¨at Jena, Schillerg¨aßchen 2–3, 07745 Jena, Germany 9 Department of Physics and Astronomy, Clemson University, Clemson, SC 29634-0978, USA 10 ALMA, Avda Apoquindo 3846, Piso 19, Edificio Alsacia, Las Condes, Santiago, Chile Received 2013 October 23; Accepted 2014 March 27 ABSTRACT Context. Debris discs are thought to be formed through the collisional grinding of planetesimals, and then can be considered as the outcome of planet formation.