Near-infrared Spectroscopy of KH 15D

Details Near-infrared Spectroscopy of KH 15D Near-infrared Spectroscopy of KH 15D

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21734001s&link_type=abstract

American Astronomical Society, AAS Meeting #217, #340.01; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We present 0.8 - 2.5 μm spectroscopy of the variable young stellar object KH15D at two stages of occultation by its circumbinary disk. We confirm the presence of molecular hydrogen emission at 2.12 μm, and report the discovery of He I emission at 1.08 μm. Flux measurements of these lines indicate that the He I emission is suppressed as the star sinks lower behind the disk, while flux from the more spatially diffuse molecular hydrogen remains constant. The spectra also show that KH15D reddens as it moves deeper into eclipse. Support from NASA through its Origins of Solar Systems program is gratefully acknowledged. One of (J.S.) was supported by an NSF/REU grant to Wesleyan University in support of the Keck Northeast Astronomy Consortium.

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