Results 101 to 110 of about 41,478 (242)

DIBs, Interstellar Dust, and Extinction [PDF]

Proceedings of the International Astronomical Union, 2013
AbstractThe relationship between DIBs and dust is still unknown. The correlation between reddening and DIB strength means that the DIBs are mixed in with the dust and gas in interstellar clouds. The DIBs are relatively stronger in the diffuse interstellar medium than in dense clouds.
openaire   +1 more source

Interstellar Extinction Law in the J, H, and Ks Bands toward the Galactic Center

, 2006
We have determined the ratios of total to selective extinction in the near-infrared bands (J, H, Ks) toward the Galactic center from the observations of the region |l| < 2.0deg and 0.5deg < |b| < 1.0deg with the IRSF telescope and the SIRIUS camera ...
Chie Nagashima, Daisuke Kato, Koji Sugitani, Lutz D., Motohide Tamura, Nobuhiko Kusakabe, Noriyuki Matsunaga, Rosenthal D., Shogo Nishiyama, Shuji Sato, Takahiro Naoi, Tetsuya Nagata, Toshihiko Tanabe, van de Hulst H. C.   +13 more
core   +2 more sources

The Infrared Complex Refractive Index and Band Strengths of Coronene Thin Films

The Astrophysical Journal
Polycyclic aromatic hydrocarbon (PAH) molecules have long been theorized to be present in a multitude of interstellar environments. The radio-frequency detections of specific cyanosubstituted PAH molecules in the Taurus Molecular Cloud have provided new ...
J. E. Roser, L. Jovanović, A. Ricca
doaj   +1 more source

On Absorption by Circumstellar Dust, With the Progenitor of SN2012aw as a Case Study

, 2012
We use the progenitor of SN2012aw to illustrate the consequences of modeling circumstellar dust using Galactic (interstellar) extinction laws that (1) ignore dust emission in the near-IR and beyond; (2) average over dust compositions, and (3) mis ...
C. S. Kochanek, Draine, Fraser, Freedman, Gehrels, Goobar, Immler, Ivezic, Ivezic, Kochanek, Kochanek, Massey, Matzner, Moretti, O'Connor, Prieto, R. Khan, Soderberg, Stockdale, Sugerman, Szczygieł, Thompson, Ugliano, Van Dyk, Wang, X. Dai, Yadav   +26 more
core   +1 more source

Extinction Distributions in Nearby Star-resolved Galaxies. I. M31

The Astronomical Journal
An extinction distribution of the Andromeda galaxy (M31) is constructed with member stars as tracers by fitting multiband photometric data from UKIRT/WFCAM, Panoramic Survey Telescope and Rapid Response System 1, and Gaia DR3.
Yuxi Wang, Jian Gao, Yi Ren, Bingqiu Chen   +3 more
doaj   +1 more source

Photometry and Classification of Stars in the Direction of the Dark Cloud TGU 619 in Cepheus. II. Interstellar Extinction and Cloud Distance

Open Astronomy, 2011
Interstellar extinction is investigated in a 1.5 square degree area of the Cepheus Flare in the direction of the dark cloud TGU 619 at ℓ=102.5°, b=+15.5°.
Zdanavičius K., Maskoliūnas M., Zdanavičius J., Straižys V., Kazlauskas A.   +4 more
doaj   +1 more source

Comparison of two different extinction laws with Hipparcos observations [PDF]

, 1998
Interstellar absorption in the galactic plane is highly variable from one direction to another. In this paper colour excesses and distances from a new open cluster sample are used to investigate the spatial distribution of the interstellar extinction. An
Carraro, Giovanni, Chen, Bing, Valette, Bernard, Vergely, Jean Luc   +3 more
core   +1 more source

Interstellar extinction towards open clusters and galactic structure

, 2005
We study the distribution of interstellar matter near the galactic plane on the basis of open star clusters and reviewed the correlation of extinction with different physical parameters of the clusters to understand the galactic structure.
Arce, Arenou, Bica, Binney, Cambrésy, Cambrésy, Chen, Chen, Cohen, Conti, Dias, Dutra, Dutra, Dutra, Fernie, FitzGerald, Gum, Humphreys, Janes, Janes, Lockman, Lynga, Lynga, Lynga, Magnani, Martin, Maíz-Apellániz, Mermilliod, Méndez, Neckel, Neckel, Pandey, Pandey, Reed, Schlegel, Stenholm, Tarantola, Y. C. Joshi   +37 more
core   +1 more source

On the Number of Independent Parameters of Interstellar Extinction Curves [PDF]

, 2020
Frédéric Zagury
openalex   +1 more source

Foreground Dust Properties toward the Cluster NGC 7380

The Astronomical Journal
Using starlight polarization, we present the properties of foreground dust toward cluster NGC 7380 embedded in H ii region Sh 2-142. Observations of starlight polarization are carried out in four filters using an imaging polarimeter equipped with a 104 ...
Sadhana Singh, Jeewan C. Pandey, Thiem Hoang, Neelam Panwar, Biman J. Medhi, Vishal Joshi, Shashikiran Ganesh   +6 more
doaj   +1 more source