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Browsing by Author "Whittet, D.C.B."
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3 MU M Spectropolarimetry of 1120 Ice in Young Stellar Objects
Chrysostomou, A.; Hough, J.; Messinger, D.W.; Whittet, D.C.B.; Aitken, D.; Hoche, P.F. (Astronomical Society of the Pacific, 1996)Spectropolarimetry of the water-ice feature at 3.1um towards a number of YSOs is presented. The data show that excesses of polarization and changes in position angle across the feature are common. The polarization excess ... -
The efficiency of grain alignment in dense interstellar clouds: : a reassessment of constraints from near-infrared polarization
Whittet, D.C.B.; Hough, J.; Lazarian, A.; Hoang, T. (2008)We present spectropolarimetry of the solid CO feature at 4.67 μm along the line of sight to Elias 16, a field star background to the Taurus dark cloud. A clear increase in polarization is observed across the feature with ... -
Extended High Circular Polarization in the Orion Massive Star Forming Region: Implications for the Origin of Homochirality in the Solar System
Fukue, T.; Tamura, M.; Kandori, R.; Kusakabe, N.; Hough, J.; Bailey, J.; Whittet, D.C.B.; Lucas, P.W.; Nakajima, Y.; Hashimoto, J. (2010)We present a wide-field (∼6′ × 6′) and deep near-infrared (K s band: 2.14 μm) circular polarization image in the Orion nebula, where massive stars and many low-mass stars are forming. Our results reveal that a high circular ... -
An Extended Search for Circularly Polarized Infrared Radiation from the OMC-1 Region of Orion
Buschermohle, M.; Whittet, D.C.B.; Chrysostomou, A.; Hough, J.; Lucas, P.W.; Adamson, A.J.; Whitney, B.A.; Wolff, M.J. (2005-05)We present new observations of circular polarization (CP) at 2.2 m in the Orion (OMC-1) molecular cloud. Our results extend a previously published study of the region.We show that the degree of CP correlates spatially with ... -
Grain alignment in dense interstellar environments : spectropolarimetry of the 4.67-m CO-ice feature in the field star Elias 16 (Taurus dark cloud)
Hough, J.; Aitken, D.; Whittet, D.C.B.; Adamson, A.J.; Chrysostomou, A. (2008)We present spectropolarimetry of the solid CO feature at 4.67 μm along the line of sight to Elias 16, a field star background to the Taurus dark cloud. A clear increase in polarization is observed across the feature with ... -
Interstellar Extinction and Polarization in the Taurus Dark Clouds: The Optical Properties of Dust near the Diffuse/Dense Cloud Interface
Whittet, D.C.B.; Gerakines, P.A.; Hough, J.; Shenoy, S. (2001) -
Interstellar polarization in the dust lane of Centaurus A (NGC 5128)
Hough, J.; Bailey, J.; Rouse, M.F.; Whittet, D.C.B. (1987)Optical and infrared linear polarization measurements of the Type 1 supernova 1986G in Centaurus A are used to determine the wavelength dependence of polarization produced by transmission of radiation through the dust lane ... -
Modeling New Spectropolarimetry Data for the BN Object
Messinger, D.W.; Roberge, W.G.; Whittet, D.C.B.; Chrysostomou, A.; Hough, J. (Astronomical Society of the Pacific, 1996)New spectropolarimetry data taken for the BN object include many previously unobserved features. Among these are a possible polarization reversal at the short wavelength end of the ice feature and a rotation in the position ... -
Near-infrared circular polarimetry and correlation diagrams in the Orion Becklin-Neugebauer/Kleinman-low region: contribution of dichroic extinction
Fukue, T.; Tamura, M.; Kandori, R.; Kusakabe, N.; Hough, J.; Lucas, P.W.; Bailey, J.; Whittet, D.C.B.; Nakajima, Y.; Hashimoto, J.; Nagata, T. (2009)We present a deep circular polarization (CP) image of the Orion Becklin-Neugebauer (BN)/Kleinman-Low (KL)nebula in the K-s band and correlations of CP, linear polarization (LP) and H-K-s color representing extinction. The ... -
Spectropolarimetry of the 3-micron ice band in Elias 16 (Taurus Dark Cloud)
Hough, J.; Sato, S.; Tamura, M.; Yamashita, T.; McFadzean, A.D.; Rouse, M.F.; Whittet, D.C.B.; Kaifu, N.; Suzuki, H.; Nagata, T.; Gatley, I.; Bailey, J. (1988)Polarization data between 1.2 and 3.8 μm, including spectropolarimetry in the 3-μm ice feature, are presented for the highly reddened field star Elias 16 in the Taurus Dark Cloud. The polarization is observed to increase ... -
Spectropolarimetry of the 3-micron ice feature in molecular clouds. II : GL 2591, GL 2136, W 33A and Elias 29 (Rho Ophiuchi dark cloud)
Hough, J.; Whittet, D.C.B.; Sato, S.; Yamashita, T.; Tamura, M.; Nagata, T.; Aitken, D.; Roche, P.F. (1989)Spectropolarimetric observations in the 3-micron ice band are presented for the infrared sources GL 2591, GL 2136, W 33A and Elias 29 (Rho Ophiuchi dark cloud). Some continuum polarization measurements between 1.2 and 5.0 ... -
Spectropolarimetry of the 3.4 m Band in the Quintuplet
Chiar, J.E.; Adamson, A.J.; Kerr, T.H.; Mason, R.E.; Wright, G.; Whittet, D.C.B.; Chrysostomou, A.; Hough, J.; Roche, P.F. (Astronomical Society of the Pacific, 2005)We present spectropolarimetry of the 3.4?m solid hydrocarbon absorption feature arising in the ISM toward the Quintuplet member GCS3-II, permitting for the first time a comparison of the hydrocarbon and silicate polarizations ... -
Spectropolarimetry of the 3.4 micron feature in the diffuse ISM toward the galactic center quintuplet cluster
Chiar, J.E.; Adamson, A.J.; Whittet, D.C.B.; Chrysostomou, A.; Hough, J.; Kerr, T.H.; Mason, R.E.; Poche, P.F.; Wright, G. (2006) -
A Study of the Chamaeleon-I Dark Cloud and T-Association - Part Six - Interstellar Polarization Grain Alignment and Magnetic Field
Whittet, D.C.B.; Gerakines, P.A.; Carkner, A.L.; Hough, J.; Martin, P.; Prusti, T.; Kilkenny, D. (1994)