Search for H3+ in HD141569A

Abstract

A search for H3+ line emission, reported to have been detected toward the young star HD 141569A and possibly originating in a clump of planet-forming gas orbiting the star, has yielded negative results. Observations made at the United Kingdom Infrared Telescope and at the Subaru Telescope during 2001-2005 covered 11 major transitions of H3+ from 3.42 to 3.99 um. No H3+ emission lines were detected; one marginal detection at 3.9855 um in June 2002 was not confirmed in later spectra. The upper limits to the line strengths are significantly lower than the previously reported detections. Supplemental slit-scanning spectroscopy using adaptive optics was performed within 0.38 of HD 141569A to search for extended emission from H3+, but no emission was detected. We compare our upper limit to the luminosity in H3+ from HD 141569A with that possible from a gas giant protoplanet and also from a jovian mass exoplanet in close orbit about its central star.

8 pages, 7 figures, Accepted for publication in Astrophysical Journal

References in corpus (7)

• The Circumstellar Disk of HD 141569 Imaged with NICMOS
• The Age of Beta Pic
• HST/ACS Coronagraphic Imaging of the Circumstellar Disk around HD1415659A
• Observations of H3+ in the Diffuse Interstellar Medium
• Stellar Companions and the Age of HD 141569 and its Circumstellar Disk
• Absorption Line Survey of H3+ toward the Galactic Center Sources I. GCS 3-2 and GC IRS3
• H3+ Between the Stars

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