SIMBAD references

2012ApJ...749L..29F - Astrophys. J., 749, L29 (2012/April-3)

Silica-rich bright debris disk around HD 15407A.

FUJIWARA H., ONAKA T., YAMASHITA T., ISHIHARA D., KATAZA H., FUKAGAWA M., TAKEDA Y. and MURAKAMI H.

Abstract (from CDS):

We report an intriguing debris disk toward the F3V star HD 15407A in which an extremely large amount of warm fine dust (∼10–7 M) is detected. The dust temperature is derived as ∼500-600 K and the location of the debris dust is estimated as 0.6-1.0 AU from the central star, a terrestrial planet region. The fractional luminosity of the debris disk is ∼0.005, which is much larger than those predicted by steady-state models of the debris disk produced by planetesimal collisions. The mid-infrared spectrum obtained by Spitzer indicates the presence of abundant µm-sized silica dust, suggesting that the dust comes from the surface layer of differentiated large rocky bodies and might be trapped around the star.

Abstract Copyright:

Journal keyword(s): circumstellar matter - infrared: stars - stars: individual: HD 15407A - zodiacal dust

Simbad objects: 10

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2019.09.23-16:50:14

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