The 10 micron spectra of comet C/2002 V1 (NEAT) and C/2001 RX14 (LINEAR)

Mitsuhiko Honda; Jun Ichi Watanabe; Takuya Yamashita; Hirokazu Kataza; Yoshiko K. Okamoto; Takashi Miyata; Shigeyuki Sako; Takuya Fujiyoshi; Hideyo Kawakita; Reiko Furusho; Daisuke Kinoshita; Tomohiko Sekiguchi; Takafumi Ootsubo; Takashi Onaka

doi:10.1086/380478

The 10 micron spectra of comet C/2002 V1 (NEAT) and C/2001 RX14 (LINEAR)

Mitsuhiko Honda, Jun Ichi Watanabe, Takuya Yamashita, Hirokazu Kataza, Yoshiko K. Okamoto, Takashi Miyata, Shigeyuki Sako, Takuya Fujiyoshi, Hideyo Kawakita, Reiko Furusho, Daisuke Kinoshita, Tomohiko Sekiguchi, Takafumi Ootsubo, Takashi Onaka

SCI - Astronomy

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

We have carried out mid-infrared 8-13 μm spectroscopic observations of C/2002 V1 (NEAT) and C/2001 RX14 (LINEAR) on 2003 January 10-11 UT using the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on the 8.2 m Subaru Telescope. The spectra of C/2002 V1 showed the broad silicate feature with the 11.2 μm peak, indicating the presence of crystalline olivine grains. The spectra of C/2001 RX14 also showed the broad trapezoidal silicate feature. The silicate feature profile of C/2002 V1 is explained by a combination of small (0.1 μm) amorphous olivine and pyroxene, large (2.0 μm) amorphous silicate, and small crystalline forsterite grains, while that of C/2001 RX14 is explained by small and large amorphous silicate grains without crystalline silicate grains. The ubiquity of large grains and crystalline silicate grains among these Oort Cloud comets indicates processing of the primordial interstellar matter in the early solar system and incorporation into the region where these cometary nuclei were formed.

Original language	English
Pages (from-to)	577-582
Number of pages	6
Journal	Astrophysical Journal
Volume	601
Issue number	1 I
DOIs	https://doi.org/10.1086/380478
Publication status	Published - 2004 Jan 20

Keywords

Comets: individual (C/2002 V1, C/2001 RX14)
Infrared: solar system

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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The 10 micron spectra of comet C/2002 V1 (NEAT) and C/2001 RX14 (LINEAR). / Honda, Mitsuhiko; Watanabe, Jun Ichi; Yamashita, Takuya; Kataza, Hirokazu; Okamoto, Yoshiko K.; Miyata, Takashi; Sako, Shigeyuki; Fujiyoshi, Takuya; Kawakita, Hideyo; Furusho, Reiko; Kinoshita, Daisuke; Sekiguchi, Tomohiko; Ootsubo, Takafumi; Onaka, Takashi.

In: Astrophysical Journal, Vol. 601, No. 1 I, 20.01.2004, p. 577-582.

Research output: Contribution to journal › Article › peer-review

Honda, Mitsuhiko ; Watanabe, Jun Ichi ; Yamashita, Takuya ; Kataza, Hirokazu ; Okamoto, Yoshiko K. ; Miyata, Takashi ; Sako, Shigeyuki ; Fujiyoshi, Takuya ; Kawakita, Hideyo ; Furusho, Reiko ; Kinoshita, Daisuke ; Sekiguchi, Tomohiko ; Ootsubo, Takafumi ; Onaka, Takashi. / The 10 micron spectra of comet C/2002 V1 (NEAT) and C/2001 RX14 (LINEAR). In: Astrophysical Journal. 2004 ; Vol. 601, No. 1 I. pp. 577-582.

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abstract = "We have carried out mid-infrared 8-13 μm spectroscopic observations of C/2002 V1 (NEAT) and C/2001 RX14 (LINEAR) on 2003 January 10-11 UT using the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on the 8.2 m Subaru Telescope. The spectra of C/2002 V1 showed the broad silicate feature with the 11.2 μm peak, indicating the presence of crystalline olivine grains. The spectra of C/2001 RX14 also showed the broad trapezoidal silicate feature. The silicate feature profile of C/2002 V1 is explained by a combination of small (0.1 μm) amorphous olivine and pyroxene, large (2.0 μm) amorphous silicate, and small crystalline forsterite grains, while that of C/2001 RX14 is explained by small and large amorphous silicate grains without crystalline silicate grains. The ubiquity of large grains and crystalline silicate grains among these Oort Cloud comets indicates processing of the primordial interstellar matter in the early solar system and incorporation into the region where these cometary nuclei were formed.",

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AU - Kataza, Hirokazu

AU - Okamoto, Yoshiko K.

AU - Miyata, Takashi

AU - Sako, Shigeyuki

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AU - Kawakita, Hideyo

AU - Furusho, Reiko

AU - Kinoshita, Daisuke

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AU - Ootsubo, Takafumi

AU - Onaka, Takashi

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AB - We have carried out mid-infrared 8-13 μm spectroscopic observations of C/2002 V1 (NEAT) and C/2001 RX14 (LINEAR) on 2003 January 10-11 UT using the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on the 8.2 m Subaru Telescope. The spectra of C/2002 V1 showed the broad silicate feature with the 11.2 μm peak, indicating the presence of crystalline olivine grains. The spectra of C/2001 RX14 also showed the broad trapezoidal silicate feature. The silicate feature profile of C/2002 V1 is explained by a combination of small (0.1 μm) amorphous olivine and pyroxene, large (2.0 μm) amorphous silicate, and small crystalline forsterite grains, while that of C/2001 RX14 is explained by small and large amorphous silicate grains without crystalline silicate grains. The ubiquity of large grains and crystalline silicate grains among these Oort Cloud comets indicates processing of the primordial interstellar matter in the early solar system and incorporation into the region where these cometary nuclei were formed.

KW - Comets: individual (C/2002 V1, C/2001 RX14)

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