Interstellar Ectinction in the Ultraviolet.

Stecher, T. P.

doi:10.1086/148462

Cited by 293 publications

(144 citation statements)

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“…3), corrections for the interstellar extinction by dust grains are essential for robust distance determinations. Here we adopt estimates of extinction for individual stars as deduced from the photometric colours with the "standard pair" technique (Stecher 1965;Massa et al 1983;Yuan et al 2013Yuan et al , 2015. A comparison with the values given by the extinction map of Schlegel et al (1998) for high Galactic latitude regions shows the technique has achieved a precision of about 0.04 mag in E(B − V )…”

Section: Extinctions and Distancesmentioning

confidence: 99%

Determination of the local standard of rest using the LSS-GAC DR1

Huang

Liu

Yuan

et al. 2015

Monthly Notices of the Royal Astronomical Society

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We re-estimate the peculiar velocity of the Sun with respect to the local standard of rest (LSR) using a sample of local stars within 600 pc of the Sun, selected from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST; also named the Guoshoujing Telescope) Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC). The sample consists of 94,332 FGK main-sequence stars with well-determined radial velocities and atmospheric parameters. To derive the LSR, two independent analyses are applied to the data. Firstly, we determine the solar motion by comparing the observed velocity distribution to that generated with the analytic formulism of Schönrich & Binney that has been demonstrated to show excellent agreement with rigorous torus-based dynamics modelling by Binney & McMillan. Secondly, we propose that cold populations of thin disc stars, selected by applying an orbital eccentricity cut, can be directly used to determine the LSR without the need of asymmetric drift corrections. Both approaches yield consistent results of solar motion in the direction of Galactic rotation, V ⊙ , that are much higher than the standard value adopted hitherto, derived from Strömgren's equation. The newly deduced values of V ⊙ are 1-2 km s −1 smaller than the more recent estimates derived from the Geneva-Copenhagen Survey (GCS) sample of stars in the solar neighbourhood (within 100 pc). We attribute the small difference to the presence of several well-known moving groups in the GCS sample that, fortunately, hardly affect the LSS-GAC sample. The newly derived radial (U ⊙ ) and vertical (W ⊙ ) components of the solar motion agree well with the previous studies. In addition, for all components of the solar motion, the values yielded by stars of different spectral types in the LSS-GAC sample are consistent with each other, suggesting that the local disk is well relaxed and that the LSR reported in the current work is robust. Our final recommended LSR is, (U ⊙ , V ⊙ , W ⊙ ) = (7.01 ± 0.20, 10.13 ± 0.12, 4.95 ± 0.09) km s −1 .

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Section: Extinctions and Distancesmentioning

confidence: 99%

Determination of the local standard of rest using the LSS-GAC DR1

Huang

Liu

Yuan

et al. 2015

Monthly Notices of the Royal Astronomical Society

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“…Soon after, silicate and graphite grains, with and without ice mantles, were shown to be consistent with the observed extinction (Wickramasinghe 1963(Wickramasinghe , 1970. With the measurement of the UV extinction and the discovery of the UV bump at ∼217 nm (Stecher 1965(Stecher , 1969 graphite became a preferred dust material and a likely UV bump-carrier (Stecher & Donn 1965). At about the same time, it was proposed that graphite along with silicate grains, formed around oxygen-rich giant stars, are the major interstellar dust species (Hoyle & Wickramasinghe 1969).…”

Section: Introductionmentioning

confidence: 99%

The global dust modelling framework THEMIS

Jones

Koehler

Ysard

et al. 2017

A&A

257

345

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Here we introduce the interstellar dust modelling framework THEMIS (The Heterogeneous dust Evolution Model for Interstellar Solids), which takes a global view of dust and its evolution in response to the local conditions in interstellar media. This approach is built upon a core model that was developed to explain the dust extinction and emission in the diffuse interstellar medium. The model was then further developed to self-consistently include the effects of dust evolution in the transition to denser regions. The THEMIS approach is under continuous development and we are currently extending the framework to explore the implications of dust evolution in HII regions and the photon-dominated regions associated with star formation. We provide links to the THEMIS, DustEM and DustPedia websites where more information about the model, its input data and applications can be found.

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“…The most prominent feature on the interstellar extinction curve, and thus the biggest DIB of all, is the so-called 2175 A hump, discovered in 1965 [95]. It was immediately realized that this could be explained by graphitic particles in the interstellar medium, an idea that fits well with the later proposed carriers of the DIBs and the AIBs.…”

Section: The Humpmentioning

confidence: 66%

Astronomical Molecular Spectroscopy

Schmidt

2010

Computational Spectroscopy

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Interstellar Ectinction in the Ultraviolet.

Cited by 293 publications

References 0 publications

Determination of the local standard of rest using the LSS-GAC DR1

Determination of the local standard of rest using the LSS-GAC DR1

The global dust modelling framework THEMIS

Astronomical Molecular Spectroscopy

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