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  Mid-infrared spectra of T Tauri disks: Modeling the effects of a small inner cavity on CO2 and H2O emission

Vlasblom, M., Dishoeck, E. F. v., Tabone, B., & Bruderer, S. (2024). Mid-infrared spectra of T Tauri disks: Modeling the effects of a small inner cavity on CO2 and H2O emission. ASTRONOMY & ASTROPHYSICS, 682:. doi:10.1051/0004-6361/202348224.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-000F-E839-C 版のパーマリンク: https://hdl.handle.net/21.11116/0000-000F-E83A-B
資料種別: 学術論文

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Mid-infrared spectra of T Tauri disks Modeling the effects of a small inner cavity on CO2 and H2O emission.pdf (全文テキスト(全般)), 3MB
 
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Mid-infrared spectra of T Tauri disks Modeling the effects of a small inner cavity on CO2 and H2O emission.pdf
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 作成者:
Vlasblom, Marissa, 著者
Dishoeck, Ewine F. van1, 著者           
Tabone, Benoit, 著者
Bruderer, Simon1, 著者           
所属:
1Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              

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キーワード: FORMING ZONE IMPLICATIONS; PROTOPLANETARY DISKS; MOLECULAR-EMISSION; ORGANIC-MOLECULES; TRANSITION DISKS; PLANET FORMATION; SPITZER SURVEY; WATER-VAPOR; GAS; SPECTROSCOPYAstronomy & Astrophysics; astrochemistry; line: formation; molecular processes; radiative transfer; protoplanetary disks;
 要旨: Context. The inner few AU of disks around young stars, where terrestrial planets are thought to form, are best probed in the infrared. The James Webb Space Telescope is now starting to characterize the chemistry of these regions in unprecedented detail, building on earlier results of the Spitzer Space Telescope that the planet-forming zone of disks contain a rich chemistry. One peculiar subset of sources characterized by Spitzer are the so-called CO2-only sources, in which only a strong 15 mu m CO2 feature was detected in the spectrum. Aims. One scenario that could explain the weak or even non-detections of molecular emission from H2O is the presence of a small, inner cavity in the disk. If this cavity were to extend past the H2O snowline, but not past the CO2 snowline, this could strongly suppress the H2O line flux with respect to that of CO2. For this work, we aimed to test the validity of this statement. Aims. One scenario that could explain the weak or even non-detections of molecular emission from H2O is the presence of a small, inner cavity in the disk. If this cavity were to extend past the H2O snowline, but not past the CO2 snowline, this could strongly suppress the H2O line flux with respect to that of CO2. For this work, we aimed to test the validity of this statement. Aims. One scenario that could explain the weak or even non-detections of molecular emission from H2O is the presence of a small, inner cavity in the disk. If this cavity were to extend past the H2O snowline, but not past the CO2 snowline, this could strongly suppress the H2O line flux with respect to that of CO2. For this work, we aimed to test the validity of this statement. Conclusions. Our modeling work shows that it is possible for the presence of a small inner cavity to explain strong CO2 emission in a spectrum. However, the cavity needed to do so is larger than what was initially expected. As such, this scenario will be easier to test with sufficiently high angular resolution (millimeter) observations.

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言語: eng - English
 日付: 2024-02-07
 出版の状態: オンラインで出版済み
 ページ: 25
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): ISI: 001158784600006
DOI: 10.1051/0004-6361/202348224
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出版物名: ASTRONOMY & ASTROPHYSICS
種別: 学術雑誌
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出版社, 出版地: 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE : EDP SCIENCES S A
ページ: - 巻号: 682 通巻号: A91 開始・終了ページ: - 識別子(ISBN, ISSN, DOIなど): ISSN: 0004-6361