Results 31 to 40 of about 30,446 (206)

X-ray extinction from interstellar dust [PDF]

Astronomy & Astrophysics, 2019
Aims. We present a study on the prospects of observing carbon, sulfur, and other lower abundance elements (namely Al, Ca, Ti, and Ni) present in the interstellar medium using future X-ray instruments. We focus in particular on the detection and characterization of interstellar dust along the lines of sight. Methods.
Costantini, E., Zeegers, S.T., Rogantini, D., Vries, C.P. de, Tielens, A.G.G.M., Waters, L.B.F.M.   +5 more
openaire   +3 more sources

Dust in the diffuse interstellar medium [PDF]

Astronomy & Astrophysics, 2014
We present a model for the diffuse interstellar dust that explains the observed wavelength-dependence of extinction, emission, linear and circular polarisation of light. The model is set-up with a small number of parameters. It consists of a mixture of amorphous carbon and silicate grains with sizes from the molecular domain of 0.5 up to about 500nm ...
Siebenmorgen, R., Voshchinnikov, N. V., Bagnulo, S.   +2 more
openaire   +2 more sources

The Power of the Rings: The GRB 221009A Soft X-Ray Emission from Its Dust-scattering Halo

The Astrophysical Journal Letters, 2023
GRB 221009A is the brightest gamma-ray burst (GRB) ever detected that has occurred at low Galactic latitude. Owing to this exceptional combination, its prompt X-ray emission could be detected for weeks in the form of expanding X-ray rings produced by ...
Andrea Tiengo, Fabio Pintore, Beatrice Vaia, Simone Filippi, Andrea Sacchi, Paolo Esposito, Michela Rigoselli, Sandro Mereghetti, Ruben Salvaterra, Barbara Šiljeg, Andrea Bracco, Željka Bošnjak, Vibor Jelić, Sergio Campana   +13 more
doaj   +1 more source

Constraints on interstellar dust models from extinction and spectro-polarimetry [PDF]

Planetary and Space Science, 2017
We present polarisation spectra of seven stars in the lines-of-sight towards the Sco OB1 association. Our spectra were obtained within the framework of the Large Interstellar Polarization Survey carried out with the FORS instrument of the ESO VLT. We have modelled the wavelength-dependence of extinction and linear polarisation with a dust model for the
Siebenmorgen, R., Voshchinnikov, N. V., Bagnulo, S., J., Cox N. L.   +3 more
openaire   +2 more sources

Dust in the Small Magellanic Cloud: Interstellar Polarization and Extinction [PDF]

The Astrophysical Journal, 1997
To elucidate the dust properties in the SMC we have for the first time measured linear polarization in five colors in the optical region of the spectrum for a sample of reddened stars. For two of these stars, for which there were no existing UV spectrophotometric measurements, but for which we measured a relatively large polarization, we have also ...
Rodrigues, C. V., Magalhaes, A. M., J., G. V. Coyne S., Piirola, V.   +3 more
openaire   +2 more sources

Estimating dust distances to Type Ia supernovae from colour excess time-evolution

, 2017
We present a new technique to infer dust locations towards reddened Type Ia supernovae and to help discriminate between an interstellar and a circumstellar origin for the observed extinction. Using Monte Carlo simulations, we show that the time-evolution
Amanullah, R., Bulla, M., Feindt, U., Ferretti, R., Goobar, A.   +4 more
core   +1 more source

VUV spectroscopy of carbon dust analogs: contribution to interstellar extinction [PDF]

Astronomy & Astrophysics, 2016
10 pages, 10 figures, accepted to Astronomy & Astrophysics on 13/11 ...
Gavilan, L., Alata, I., Le, K. C., Pino, T., Giuliani, A., Dartois, E.   +5 more
openaire   +3 more sources

Interstellar extinction from photometric surveys: application to four high-latitude areas

Open Astronomy, 2018
Information on interstellar extinction and dust properties may be obtained from modern large photometric surveys data. Virtual Observatory facilities allow users to make a fast and correct cross-identification of objects from various surveys. It yields a
Malkov Oleg, Karpov Sergey, Kilpio Elena, Sichevsky Sergey, Chulkov Dmitry, Dluzhnevskaya Olga, Kovaleva Dana, Kniazev Alexei, Mickaelian Areg, Mironov Alexey, Murthy Jayant, Sytov Alexey, Zhao Gang, Zhukov Aleksandr   +13 more
doaj   +1 more source

Dust in the Local Group

, 2015
How dust absorbs and scatters starlight as a function of wavelength (known as the interstellar extinction curve) is crucial for correcting for the effects of dust extinction in inferring the true luminosity and colors of reddened astrophysical objects ...
Gao, Jian, Jiang, B. W., Li, Aigen, Wang, Shu   +3 more
core   +1 more source

Life Cycle of Dust in the Magellanic Clouds and the Milky Way

, 2014
To a great extent, our understanding of the life cycle of dust is based on the observational and theoretical studies of the Milky Way and the Magellanic Clouds, which will be the topic of this contribution. Over past years, a large volume of observations
Henning, Thomas, Zhukovska, Svitlana
core   +1 more source