Near Infrared Observations of Comet-Like Asteroid (596) Scheila
steroid (596) Scheila was reported to exhibit a cometary appearance and an increase in brightness on UT 2010 December 10.4. We used the IRCS spectrograph on the 8-m Subaru telescope to obtain medium-resolution spectra of Scheila in the HK-band (1.4 - 2.5$μ$m) and low-resolution spectra in the KL-ban...
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ftdatacite:10.48550/arxiv.1107.3845 2023-05-15T18:30:05+02:00 Near Infrared Observations of Comet-Like Asteroid (596) Scheila Yang, Bin Hsieh, Henry 2011 https://dx.doi.org/10.48550/arxiv.1107.3845 https://arxiv.org/abs/1107.3845 unknown arXiv https://dx.doi.org/10.1088/2041-8205/737/2/l39 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Earth and Planetary Astrophysics astro-ph.EP FOS Physical sciences article-journal Article ScholarlyArticle Text 2011 ftdatacite https://doi.org/10.48550/arxiv.1107.3845 https://doi.org/10.1088/2041-8205/737/2/l39 2022-04-01T13:54:59Z steroid (596) Scheila was reported to exhibit a cometary appearance and an increase in brightness on UT 2010 December 10.4. We used the IRCS spectrograph on the 8-m Subaru telescope to obtain medium-resolution spectra of Scheila in the HK-band (1.4 - 2.5$μ$m) and low-resolution spectra in the KL-band (2.0 - 4.0$μ$m) on UT 2010 December 13 and 14. In addition, we obtained low-resolution spectroscopy using the SpeX spectrograph on the 3-m NASA Infrared Telescope Facility (IRTF) telescope on UT 2011 January 04 and 05. The spectrum of Scheila shows a consistent red slope from 0.8 to 4.0$μ$m with no apparent absorption features, resembling spectra of D-type asteroids. An intimate mixing model suggests that the amount of water ice that might be present on the surface of Scheila is no more than a few percent. The spectrum of the Tagish Lake chondrite matches the asteroid's spectrum at shorter wavelengths ($λ< 2.5 μ$m), but no hydration features are observed at longer wavelengths on Scheila. Our analysis corroborates other studies suggesting that the comet-like activity of Scheila is likely not caused by the sublimation of water ice. The dust coma and tail may be results of a recent impact event. : 14 pages, 4 figures, accepted to be published in ApJL Text Tagish DataCite Metadata Store (German National Library of Science and Technology) Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) |
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collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Earth and Planetary Astrophysics astro-ph.EP FOS Physical sciences |
spellingShingle |
Earth and Planetary Astrophysics astro-ph.EP FOS Physical sciences Yang, Bin Hsieh, Henry Near Infrared Observations of Comet-Like Asteroid (596) Scheila |
topic_facet |
Earth and Planetary Astrophysics astro-ph.EP FOS Physical sciences |
description |
steroid (596) Scheila was reported to exhibit a cometary appearance and an increase in brightness on UT 2010 December 10.4. We used the IRCS spectrograph on the 8-m Subaru telescope to obtain medium-resolution spectra of Scheila in the HK-band (1.4 - 2.5$μ$m) and low-resolution spectra in the KL-band (2.0 - 4.0$μ$m) on UT 2010 December 13 and 14. In addition, we obtained low-resolution spectroscopy using the SpeX spectrograph on the 3-m NASA Infrared Telescope Facility (IRTF) telescope on UT 2011 January 04 and 05. The spectrum of Scheila shows a consistent red slope from 0.8 to 4.0$μ$m with no apparent absorption features, resembling spectra of D-type asteroids. An intimate mixing model suggests that the amount of water ice that might be present on the surface of Scheila is no more than a few percent. The spectrum of the Tagish Lake chondrite matches the asteroid's spectrum at shorter wavelengths ($λ< 2.5 μ$m), but no hydration features are observed at longer wavelengths on Scheila. Our analysis corroborates other studies suggesting that the comet-like activity of Scheila is likely not caused by the sublimation of water ice. The dust coma and tail may be results of a recent impact event. : 14 pages, 4 figures, accepted to be published in ApJL |
format |
Text |
author |
Yang, Bin Hsieh, Henry |
author_facet |
Yang, Bin Hsieh, Henry |
author_sort |
Yang, Bin |
title |
Near Infrared Observations of Comet-Like Asteroid (596) Scheila |
title_short |
Near Infrared Observations of Comet-Like Asteroid (596) Scheila |
title_full |
Near Infrared Observations of Comet-Like Asteroid (596) Scheila |
title_fullStr |
Near Infrared Observations of Comet-Like Asteroid (596) Scheila |
title_full_unstemmed |
Near Infrared Observations of Comet-Like Asteroid (596) Scheila |
title_sort |
near infrared observations of comet-like asteroid (596) scheila |
publisher |
arXiv |
publishDate |
2011 |
url |
https://dx.doi.org/10.48550/arxiv.1107.3845 https://arxiv.org/abs/1107.3845 |
long_lat |
ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Tagish Tagish Lake |
geographic_facet |
Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_relation |
https://dx.doi.org/10.1088/2041-8205/737/2/l39 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1107.3845 https://doi.org/10.1088/2041-8205/737/2/l39 |
_version_ |
1766213567831343104 |