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Related papers: Extinction Curves, Distances, and Clumpiness of Di…

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Photometry of the Galactic bulge, collected during the OGLE-II microlensing search, indicates high and non-uniform interstellar extinction toward the observed fields. We use the mean I-band magnitude and V-I color of red clump stars as a…

Astrophysics · Physics 2008-11-26 A. Udalski

We compute the mid-infrared extinction law from 3.6-24 microns in three molecular clouds: Ophiuchus, Perseus, and Serpens, by combining data from the "Cores to Disks" Spitzer Legacy Science program with deep JHKs imaging. Using a new…

Astrophysics · Physics 2008-12-18 Nicholas L. Chapman , Lee G. Mundy , Shih-Ping Lai , Neal J. Evans

Line-of-sight extinction estimates to well-studied young T Tauri and Herbig Ae/Be stars are based on many different measurements and analysis methods. This has resulted in wide scatter among the published $A_V$ values for the same star. In…

Solar and Stellar Astrophysics · Physics 2022-12-07 Adolfo S. Carvalho , Lynne A. Hillenbrand

We present a catalog of dust clouds at high Galactic latitude based on the Planck 857 GHz dust emission data. Using a clustering hierarchical algorithm, 315 dust cloud at high Galactic latitudes are identified. Additionally, using the…

Astrophysics of Galaxies · Physics 2024-08-14 Mingxu Sun , Biwei Jiang , Helong Guo , Wenyuan Cui

We constrain the light extinction properties of Milky Way dust. We investigated the correlations between dust column density as inferred from infrared data and the observed colours of celestial objects at cosmological distances with low…

Astrophysics of Galaxies · Physics 2015-06-11 Edvard Mortsell

The Milky Way's central parsec is a highly extinguished region with a population of high-proper-motion stars. We have tracked 145 stars for $\sim$10 years at wavelengths between 1 and 4 microns to analyze extinction effects in…

Astrophysics of Galaxies · Physics 2024-08-13 Z. Haggard , A. M. Ghez , S. Sakai , A. K. Gautam , T. Do , J. R. Lu , M. Hosek , M. R. Morris , S. Granados

Based on the accurate color excess $E_{\rm G_{BP},G_{RP}}$ of more than 4 million stars and $E_{\rm NUV,G_{BP}}$ of more than 1 million stars from \citet{2021ApJS..254...38S}, the distance and the extinction of the molecular clouds in the…

Astrophysics of Galaxies · Physics 2021-10-20 Mingxu Sun , Biwei Jiang , He Zhao , Yi Ren

We report results of a near--infrared imaging survey of L977, a dark cloud in Cygnus seen in projection against the plane of the Milky Way. We use measurements of the near--infrared color excess and positions of the 1628 brightest stars in…

Astrophysics · Physics 2009-10-30 J. Alves , C. Lada , E. Lada , S. Kenyon , R. Phelps

The attenuation of starlight by interstellar dust is investigated in a sample of low redshift, disk-dominated star-forming galaxies using photometry from GALEX and SDSS. By considering broadband colors as a function of galaxy inclination we…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Charlie Conroy , David Schiminovich , Michael R. Blanton

New HST/STIS optical spectra were obtained for a sample of early type stars with existing IUE UV spectra. These data were used to construct optical extinction curves whose general properties are discussed elsewhere. In this paper, we…

Solar and Stellar Astrophysics · Physics 2020-03-11 D. Massa , E. L. Fitzpatrick , K. D. Gordon

The ubiquitous presence of Galactic cirri in deep optical images represents a major obstacle to study the low surface brightness features of extragalactic sources. To address this issue, we have explored the optical properties of cirri…

Astrophysics of Galaxies · Physics 2021-01-04 Javier Román , Ignacio Trujillo , Mireia Montes

We present an extinction analysis of 9 paths through the LMC and SMC based on FUSE observations. To date, just two LMC sight lines have probed dust grain composition and size distributions in the Clouds using spectra including wavelengths…

We aim to compare variations in the full-UV dust extinction curve (912-3000 Angstrom), with the HI/H$_2$/total H content along diffuse Milky Way sightlines, to investigate possible connections between ISM conditions and dust properties. We…

Astrophysics of Galaxies · Physics 2023-02-15 Dries Van De Putte , Stefan I. B. Cartledge , Karl D. Gordon , Geoffrey C. Clayton , Julia Roman-Duval

Dust extinction is one of the most reliable tracers of the gas distribution in the Milky Way. The near-infrared (NIR) Vista Variables in the Via Lactea (VVV) survey enables extinction mapping based on stellar photometry over a large area in…

Astrophysics of Galaxies · Physics 2022-11-16 Miaomiao Zhang , Jouni Kainulainen

The distance dependence of interstellar extinction in the direction of the Aquila Rift is investigated using 473 stars observed in the Vilnius photometric system. Front edge of the dark clouds in the area is found to be at 225$\pm$55 pc and…

Astrophysics · Physics 2009-11-07 V. Straizys , K. Cernis , S. Bartasiute

We make use of SHARDS, an ultra-deep (<26.5AB) galaxy survey that provides optical photo-spectra at resolution R~50, via medium band filters (FWHM~150A). This dataset is combined with ancillary optical and NIR fluxes to constrain the dust…

In this paper we explore the relation between dust extinction and stellar light distribution in disks of spiral galaxies. Extinction influences our dynamical and photometric perception of disks, since it can distort our measurement of the…

Astrophysics · Physics 2009-11-11 B. W. Holwerda , R. A. González , P. C. van der Kruit , Ronald J. Allen

Context: Dust grains are key components of the interstellar medium and play a central role in star formation, acting as catalysts for chemical reactions and as building blocks of planets. Extinction curves are essential for characterizing…

Dust grains grow their sizes in the interstellar clouds (especially in molecular clouds) by accretion and coagulation. Here we model and test these processes by examining the consistency with the observed variation of the extinction curves…

Astrophysics of Galaxies · Physics 2015-06-17 Hiroyuki Hirashita , Nikolai V. Voshchinnikov

Diffuse interstellar bands (DIBs) hold a lot of information about the state and the structure of the ISM. Structure can most directly be observed by extensive spectroscopic surveys, including surveys of stars where DIBs are especially…

Astrophysics of Galaxies · Physics 2017-05-10 Janez Kos
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