Near-Infrared Observations of KH 15D through the 2003 February Eclipse

Details Near-Infrared Observations of KH 15D through the 2003 February Eclipse Near-Infrared Observations of KH 15D through the 2003 February Eclipse

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aj....128.2977k&link_type=abstract

The Astronomical Journal, Volume 128, Issue 6, pp. 2977-2980.

Astronomy and Astrophysics

Astronomy

4

Stars: Circumstellar Matter, Planetary Systems: Protoplanetary Disks, Stars: Individual: Alphanumeric: Kh 15D, Stars: Pre-Main-Sequence

Scientific paper

We report 0.9-2.5 μm spectroscopic observations of the young stellar object KH 15D at several points on the light curve through the eclipse of 2003 February. The out-of-eclipse infrared spectra confirm the spectroscopic identification of approximately K7 V, without evidence for selective extinction. As the star entered eclipse and the intensity dropped by ~1 mag, the spectra and synthetic J-H and H-K magnitudes derived from the spectra indicated a slight blueing, which however requires further confirmation. On coming out of eclipse, the spectral colors showed no change (<=0.03 mag) compared with the colors when the eclipsed intensity had dropped by 1 mag. The gray extinction suggests that the particle sizes in the obscuring disk or ring are large, with radii >=2.5 μm.

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