Dissemin is shutting down on January 1st, 2025

Published in

Hans Publishers, Astronomy & Astrophysics, (518), p. L127

DOI: 10.1051/0004-6361/201014595

Links

Tools

Export citation

Search in Google Scholar

GAS in Protoplanetary Systems (GASPS)

Journal article published in 2010 by G. S. Mathews, W. R. F. Dent, J. P. Williams, C. D. Howard, G. Meeus, B. Riaz, A. Roberge, G. Sandell, B. Vandenbussche, G. Duchêne, I. Kamp, F. Ménard, B. Montesinos ORCID, C. Pinte, W. F. Thi and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Red circle
Preprint: archiving forbidden
Red circle
Postprint: archiving forbidden
Red circle
Published version: archiving forbidden
Policy details
Data provided by SHERPA/RoMEO

Abstract

Context. Circumstellar discs are ubiquitous around young stars, but rapidly dissipate their gas and dust on timescales of a few Myr. The Herschel Space Observatory allows for the study of the warm disc atmosphere, using far-infrared spectroscopy to measure gas content and excitation conditions, and far-IR photometry to constrain the dust distribution. Aims. We aim to detect and characterize the gas content of circumstellar discs in four targets as part of the Herschel science demonstration phase. Methods. We carried out sensitive medium resolution spectroscopy and high sensitivity photometry at gimel similar to 60-190 mu m using the Photodetector Array Camera and Spectrometer instrument on the Herschel Space Observatory. Results. We detect [OI] 63 mu m emission from the young stars HD 169142, TW Hydrae, and RECX 15, but not HD 181327. No other lines, including [CII] 158 and [OI] 145, are significantly detected. All four stars are detected in photometry at 70 and 160 mu m. Extensive models are presented in associated papers.