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Related papers: The Infrared Extinction Law in the Ophiuchus Molec…

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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

We present an independent estimate of the interstellar extinction law for the Spitzer IRAC bands as well as a first attempt at extending the law to the 24micron MIPS band. The source data for these measurements are observations of five…

The far-infrared (FIR) opacity of dust in dark clouds within the Ophiuchus molecular cloud is investigated through multi-wavelength infrared observations from UKIDSS, Spitzer and Herschel. Employing the infrared color excess technique with…

Astrophysics of Galaxies · Physics 2024-02-19 Jun Li , Biwei Jiang , He Zhao , Xi Chen , Yang Yang

The extinction curve of interstellar dust in the dense molecular cloud cores is crucial for understanding dust properties, particularly size distribution and composition. We investigate the infrared extinction law in four nearby isolated…

Astrophysics of Galaxies · Physics 2024-11-04 Jun Li , Bingqiu Chen , Biwei Jiang , He Zhao , Botao Jiang , Xi Chen

The extinction law from ultraviolet (UV) to infrared (IR) (0.2-24 $\mu$m) is determined by relying on the blue-edge method and color excess ratios for some nearby molecular clouds, from low mass star forming region to massive star forming…

Astrophysics of Galaxies · Physics 2024-10-04 Zhetai Cao , Biwei Jiang , Shu Wang , Jun Li

A precise measure of the mid-infrared interstellar extinction law is crucial to the investigation of the properties of interstellar dust, especially of the grains in the large size end. Based on the stellar parameters derived from the…

Astrophysics of Galaxies · Physics 2016-11-10 Mengyao Xue , Biwei Jiang , Jian Gao , Jiaming Liu , Shu Wang , Aigen Li

Investigating the extinction law in regions of high dust extinction, such as the Pillars of Creation within the M16 region, is crucial for understanding the densest parts of the interstellar medium (ISM). In this study, we utilize…

Astrophysics of Galaxies · Physics 2024-06-06 Jun Li , Bingqiu Chen , Biwei Jiang , Jian Gao , Xi Chen

We have investigated the shape of the extinction curve in the infrared up to ~25 {\mu}m for the Orion A star-forming complex. The basis of this work is near-infrared data acquired with VISTA, in combination with Pan-STARRS and mid-infrared…

Astrophysics of Galaxies · Physics 2018-06-20 Stefan Meingast , João Alves , Marco Lombardi

Accurate interpretation of observations relies on the interstellar dust extinction law, which also serves as a powerful diagnostic for probing dust properties. In this study, we investigate the multi-wavelength extinction law of the…

Astrophysics of Galaxies · Physics 2025-02-14 Juan Deng , Shu Wang , Biwei Jiang , He Zhao

Context. The properties of dust grains, in particular their size distribution, are expected to differ from the interstellar medium to the high-density regions within molecular clouds. Aims. We measure the mid-infrared extinction law…

Astrophysics of Galaxies · Physics 2015-06-12 J. Ascenso , C. J. Lada , J. Alves , C. G. Román-Zúñiga , M. Lombardi

In the past few years, the extinction law has been measured in the infrared wavelengths for various molecular clouds and different laws have been obtained. In this paper we seek variations of the extinction law within the Trifid nebula…

Astrophysics of Galaxies · Physics 2015-05-20 L. Cambrésy , J. Rho , D. J. Marshall , W. T. Reach

We combined sensitive near-infrared data obtained with ground-based imagers on the ESO NTT and VLT telescopes with space mid-infrared data acquired with the IRAC imager on the Spitzer Space Telescope to calculate the extinction law…

Astrophysics · Physics 2015-05-13 C. Román-Zúñiga , C. Lada , A. Muench , J. Alves

We investigate the shape of the extinction law in two 1-degree square fields of the Perseus Molecular Cloud complex. We combine deep red-optical (r, i, and z-band) observations obtained using Megacam on the MMT with UKIDSS near-infrared (J,…

Astrophysics of Galaxies · Physics 2015-06-11 Jonathan B. Foster , Kaisey S. Mandel , Jaime E. Pineda , Kevin R. Covey , Héctor G. Arce , Alyssa A. Goodman

We combine near-infrared (2MASS) and mid-infrared (Spitzer-IRAC) photometry to characterize the IR extinction law (1.2-8 microns) over nearly 150 degrees of contiguous Milky Way midplane longitude. The relative extinctions in 5 passbands…

Interstellar dust extinction law is essential for interpreting observations. In this work, we investigate the ultraviolet (UV)--mid-infrared (IR) extinction law of the Taurus molecular cloud and its possible variations. We select 504,988…

Astrophysics of Galaxies · Physics 2023-08-07 Ling Li , Shu Wang , Xiaodian Chen , Qingquan Jiang

Understanding the effects of dust extinction is important to properly interpret observations. The optical total-to-selective extinction ratio, Rv = Av/E(B-V), is widely used to describe extinction variations in ultraviolet and optical…

Astrophysics of Galaxies · Physics 2017-11-01 Shu Wang , Biwei Jiang , He Zhao , Xiaodian Chen , Richard de Grijs

We present spectroscopic tests of MIR to FIR extinction laws in IRDC G028.36+00.07, a potential site of massive star and star cluster formation. Lim & Tan (2014) developed methods of FIR extinction mapping of this source using ${\it…

Astrophysics of Galaxies · Physics 2015-11-17 Wanggi Lim , Sean J. Carey , Jonathan C. Tan

We present CCD photometry in UBVRI of several thousand Galactic field stars in four large (>1 degree^2) regions centered on diffuse interstellar dust clouds, commonly referred to as ``cirrus'' clouds (with optical depth A_V less than…

Astrophysics · Physics 2009-10-31 Arpad Szomoru , Puragra Guhathakurta

The interstellar extinction law is important for interpreting observations and inferring the properties of interstellar dust grains. Based on the 993 prism/CLEAR spectra from the James Webb Space Telescope (JWST), we investigate…

Astrophysics of Galaxies · Physics 2024-02-28 Shu Wang , Xiaodian Chen

Based on the photometric data from the Spitzer/SAGE survey and with red giants as the extinction tracers, the mid-infrared (MIR) extinction laws in the Large Magellanic Cloud (LMC) are derived for the first time in the form of…

Astrophysics of Galaxies · Physics 2015-06-16 Jian Gao , B. W. Jiang , Aigen Li , M. Y. Xue
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