Ro-vibrational analysis of SiO in UV-irradiated environments

Zhang, Ziwei E.; Cumbee, Renata; Stancil, P. C.; Ferland, Gary J.

doi:10.1016/j.molap.2018.09.001

Cited by 2 publications

(1 citation statement)

References 46 publications

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“…This can be extensions to higher rotational levels, addition of hyperfine structure, and extension to vibrational or even electronic transitions. This category includes rovibrational CO-H 2 [122], rovibrational CO-H [123], HCO + -H 2 to 500 K [124], hyperfine N 2 H + -H 2 [125], and rovibrational SiO-He [126].…”

Section: Planned Updates Of Lamdamentioning

confidence: 99%

The Leiden Atomic and Molecular Database (LAMDA): Current Status, Recent Updates, and Future Plans

Tak

Lique

Fauré

et al. 2020

Atoms

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The Leiden Atomic and Molecular Database (LAMDA) collects spectroscopic information and collisional rate coefficients for molecules, atoms, and ions of astrophysical and astrochemical interest. We describe the developments of the database since its inception in 2005, and outline our plans for the near future. Such a database is constrained both by the nature of its uses and by the availability of accurate data: we suggest ways to improve the synergies among users and suppliers of data. We summarize some recent developments in computation of collisional cross sections and rate coefficients. We consider atomic and molecular data that are needed to support astrophysics and astrochemistry with upcoming instruments that operate in the mid- and far-infrared parts of the spectrum.

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Section: Planned Updates Of Lamdamentioning

confidence: 99%

The Leiden Atomic and Molecular Database (LAMDA): Current Status, Recent Updates, and Future Plans

Tak

Lique

Fauré

et al. 2020

Atoms

View full text Add to dashboard Cite

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Properties of Highly Rotationally Excited H₂ in Photodissociation Regions

Zhang

Cummings

Wan

et al. 2021

ApJ

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Molecular hydrogen (H2) is the dominant molecular species in the vast majority of interstellar environments and it plays a crucial role as a radiative coolant. In photodissociation regions (PDRs), it is one of the primary emitters in the near- to mid-infrared, which is due to lines originating from highly excited levels. The sparseness of H2 collisional data for rotational levels J ≥ 9, particularly for H2–H2 collisions, has limited nonlocal thermal equilibrium (NLTE) studies in ultraviolet-irradiated regions. Utilizing new calculations for para- and ortho-H2 high rotational collisional rate coefficients colliding with H2 (up to the maximum value for v = 0: J = 31), existing data for H2–H and H2–He collisions, and approximate scaling relations for missing collisional data, we investigate the excitation properties of H2 in a range of astrophysical environments, with the focus on PDRs (including benchmark PDR models and the Orion Bar). In these NLTE models, H2 emission is illustrated and shown as a diagnostic for physical conditions, such as temperature and density. Furthermore, we demonstrated the effect of updates in the collisional rates on the modeling results of H2 excitation. The resulting data sets of H2 collisional data should find wide application to other molecular environments.

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Ro-vibrational analysis of SiO in UV-irradiated environments

Cited by 2 publications

References 46 publications

The Leiden Atomic and Molecular Database (LAMDA): Current Status, Recent Updates, and Future Plans

The Leiden Atomic and Molecular Database (LAMDA): Current Status, Recent Updates, and Future Plans

Properties of Highly Rotationally Excited H₂ in Photodissociation Regions

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Ro-vibrational analysis of SiO in UV-irradiated environments

Cited by 2 publications

References 46 publications

The Leiden Atomic and Molecular Database (LAMDA): Current Status, Recent Updates, and Future Plans

The Leiden Atomic and Molecular Database (LAMDA): Current Status, Recent Updates, and Future Plans

Properties of Highly Rotationally Excited H2 in Photodissociation Regions

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Product

Resources

About

Properties of Highly Rotationally Excited H₂ in Photodissociation Regions