Hostname: page-component-7bb8b95d7b-495rp Total loading time: 0 Render date: 2024-09-21T05:31:19.761Z Has data issue: false hasContentIssue false
  • English
  • Français

IR Observations of the K and F Corona During the 1991 Eclipse

Published online by Cambridge University Press:  03 August 2017

J. R. Kuhn ,
H. Lin ,
P. Lamy ,
S. Koutchmy  and
R. N. Smartt
J. R. Kuhn
Affiliation:
Michigan State University, East Lansing, MI 48824, U.S.A.
H. Lin
Affiliation:
Michigan State University, East Lansing, MI 48824, U.S.A.
P. Lamy
Affiliation:
Laboratoire d'Astronomie Spatiale, F-13012 Marseille, France
S. Koutchmy
Affiliation:
Institut d'Astrophysique, Boulevard Arago, F-75014 Paris, France
R. N. Smartt
Affiliation:
National Solar Observatory, Sunspot, NM 88349, U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The availability of relatively large format IR array detectors is incentive for reexamining the classic question of whether or not there are “dust rings” around the sun – a problem for which there are conflicting observational answers. The 1991 eclipse path included a high altitude observatory and provided a potentially ideal opportunity to study the infrared properties and dust content of the corona. Here we report results from an experiment conducted from Mauna Kea using a HgCdTe array detector sensitive to wavelengths between 1-2.5 μm. Surface brightness measurements in the H-band and polarization data in the J-band were obtained over a field-of-view of ±6 R⊙ while K-band images further extend to 15 R⊙ on the western side of the Sun. J-band polarization data and H and K-band surface brightness data clearly show the inhomogeneous structure in the K corona and the ecliptical flattening of the F corona. We see no evidence of a circumsolar, local dust corona (dust rings) out to 15 R⊙.

Keywords

eclipsesinfrared: starsinterplanetary mediumSun: corona
Type
Part 2: Infrared Observations of the 1991 Total Solar Eclipse
Information
Symposium - International Astronomical Union , Volume 154: Infrared Solar Physics , 1994 , pp. 185 - 197
Copyright
Copyright © Kluwer 1994 

References

Koutchmy, S. and Lamy, P.: 1985, in Giese, R.H. and Lamy, P. (eds.), Properties and Interactions of Interplanetary Dust, p. 63.Google Scholar
McPherson, M., Lin, H. and Kuhn, J.R.: 1992, Solar Phys. 139, 255.Google Scholar
MacQueen, R.M.: 1968, Astrophys. J. 154, 1059.Google Scholar
Mampaso, A., Sanchez-Magro, C., and Buitrago, J.: 1982, in Fricke, W. and Tedeki, G. (eds.), Sun and Planetary Systems, p. 257.CrossRefGoogle Scholar
Mukai, T.: 1985, in Giese, R.H. and Lamy, P. (eds.), Properties and Interactions of Interplanetary Dust, p. 59.Google Scholar
Peterson, A.W.: 1963, Astrophys. J. 138, 1218.CrossRefGoogle Scholar
Wyatt, S., Whipple, F.L.: 1950, Astrophys. J. 111, 134.CrossRefGoogle Scholar