Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1273..461c&link_type=abstract
17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 461-466 (2010).
Astronomy and Astrophysics
Astronomy
White Dwarfs, Interstellar Matter, Astronomical Telescopes, Asteroids, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Circumstellar Shells, Clouds, And Expanding Envelopes, Circumstellar Masers, Astrometric And Interferometric Instruments, Asteroids, Meteoroids
Scientific paper
IR excesses of white dwarfs (WDs) can be used to diagnose the presence of low-mass companions, planets, and circumstellar dust. Using different combinations of wavelengths and WD temperatures, circumstellar dust at different radial distances can be surveyed. The Spitzer Space Telescope has been used to search for IR excesses of white dwarfs. Two types of circumstellar dust disks have been found: (1) small disks around cool WDs with Teff<20,000 K, and (1) large disks around hot WDs with Teff>100,000 K. The small dust disks are within the Roche limit, and are commonly accepted to have originated from tidally crushed asteroids. The large dust disks, at tens of AU from the central WDs, have been suggested to be produced by increased collisions among Kuiper Belt-like objects. In this paper, we discuss Spitzer IRAC surveys of small dust disks around cool WDs, a MIPS survey of large dust disks around hot WDs, and an archival Spitzer survey of IR excesses of WDs.
Bilíkovà Jana
Chu Y.-H. Y.-H.
Gruendl Robert A.
Riddle Andrew
Su Kate Y. L.
No associations
LandOfFree
Spitzer Surveys of IR Excesses of White Dwarfs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spitzer Surveys of IR Excesses of White Dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spitzer Surveys of IR Excesses of White Dwarfs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1158370