Results 11 to 20 of about 1,348,566 (296)
Optical polarimetry of infrared excess stars [PDF]
Astronomy & Astrophysics, 2006 We present UBRVI polarimetry measurements for a group of 38 IRAS infrared excess stars and complement these observations with V -band data taken from the literature for 87 additional objects. After correcting the observed values by the interstellar contribution, we find that 48% of the analyzed sample has polarization excess.
C. Chavero +3 more
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Infrared-excess white dwarfs in the Gaia 100 pc sample [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Abstract We analyse the 100 pc Gaia white dwarf volume-limited sample by means of VOSA (Virtual Observatory SED Analyser) with the aim of identifying candidates for displaying infrared excesses. Our search focuses on the study of the spectral energy distribution (SED) of 3,733 white dwarfs with reliable infrared photometry and GBP − GRP ...
Rebassa Mansergas, Alberto +5 more
openaire +7 more sources
White Dwarfs with Infrared Excess in the HET Dark Energy Experiment [PDF]
The Astrophysical JournalWhite dwarfs with infrared excess emission provide a window into the late stages of stellar evolution and the dynamics of circumstellar environments.
Rudy A. Morales +7 more
doaj +4 more sources
The Astrophysical Journal LettersThe MIRI Exoplanets Orbiting White dwarfs survey is a cycle 2 JWST program to search for exoplanets around dozens of nearby white dwarfs via infrared excess and direct imaging.
Mary Anne Limbach +19 more
doaj +2 more sources
The Astrophysical Journal LettersWe report on the discovery of a very prominent mid-infrared (18–25 μ m) excess associated with the trans-Neptunian dwarf planet (136472) Makemake. The excess, detected by the Mid-Infrared Instrument of the James Webb Space Telescope, along with previous ...
Csaba Kiss +20 more
doaj +2 more sources
On the infrared excess of Alpha Lyrae [PDF]
Symposium - International Astronomical Union, 1987 SummaryRecent measurements in far-infrared (12–200 μm) by IRAS (Aumann et al, 1984) and KAO (Harper et al, 1984) have shown evidence of infrared excess in the AO star Alpha Lyrae. This excess in the infrared radiation was interpreted as due to circumstellar dust constituted by grains much larger (≳10 μm) than those of interstellar origin.
B. G. Anandarao, D. B. Vaidya
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Infrared Excess in the Be Star δ Scorpii [PDF]
Publications of the Astronomical Society of the Pacific, 2008 We present infrared photometric observations of the Be binary system delta Scorpii obtained in 2006. The J,H and K magnitudes are the same within the errors compared to observations taken 10 months earlier. We derive the infrared excess from the observation and compare this to the color excess predicted by a radiative equilibrium model of the primary ...
Halonen, R. J. +8 more
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A YOUNG WHITE DWARF WITH AN INFRARED EXCESS [PDF]
The Astrophysical Journal, 2015 ApJ Letters ...
S. Xu (许偲艺) +6 more
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THE MYStIX INFRARED-EXCESS SOURCE CATALOG [PDF]
The Astrophysical Journal Supplement Series, 2013 The MYStIX project (Massive Young Star-Forming Complex Study in Infrared and X-rays) provides a comparative study of 20 Galactic massive star-forming complexes (d = 0.4 to 3.6 kpc). Probable stellar members in each target complex are identified using X-ray and/or infrared data via two pathways: (1) X-ray detections of young/massive stars with coronal ...
Povich, MS +8 more
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VARIABILITY OF THE INFRARED EXCESS OF EXTREME DEBRIS DISKS [PDF]
The Astrophysical Journal, 2012 Debris disks with extremely large infrared excesses (fractional luminosities $> 10^{-2}$) are rare. Those with ages between 30 and 130 Myr are of interest because their evolution has progressed well beyond that of protoplanetary disks (which dissipate with a timescale of order 3 Myr), yet they represent a period when dynamical models suggest that ...
Meng, Huan Y. A. +5 more
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