Mapping the three-dimensional dust extinction towards the supernova remnant S147 – the S147 dust cloud

Chen, Bingqiu; Liu, X.-W.; Ren, Juanjuan; Yuan, Haibo; Huang, Yang; Yu, Bin; Xiang, Maosheng; Wang, C.; Tian, Zhijia; Zhang, H.-W.

doi:10.1093/mnras/stx2287

Cited by 29 publications

(21 citation statements)

References 54 publications

(106 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We adopt E 0 n " f 1 E n pd min q, where n is the index of stars, f 1 is the scale factor, E 0 n is the foreground colour excess, and E n pd min q is the colour excess at distance d min from the Chen et al map. Similar as in Chen et al (2017) and Yu et al (2019), along the line of sight we assume a simple Gaussian distribution of dust in the cloud. The colour excess profile for the cloud E 1 pdq is then given by,…”

Section: Methodsmentioning

confidence: 99%

“…Finally, we estimate the mass of each cloud, assuming that the dust is distributed as a thin sheet at its center position (Lombardi et al 2011;Schlafly et al 2015;Chen et al 2017), by,…”

Section: Methodsmentioning

confidence: 99%

“…A complementary approach to probe the properties of molecular clouds is to trace the molecular gas by dust observations, specifically via the optical/near-infrared (IR) dust extinction measurements (Goodman et al 2009;Chen et al 2017). Based on the twodimensional (2D) Galactic extinction maps, Dobashi (2011) have identified more than 7,000 molecular clouds.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A large catalogue of molecular clouds with accurate distances within 4 kpc of the Galactic disc

Chen

Yuan

et al. 2020

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

We present a large, homogeneous catalogue of molecular clouds within 4 kpc from the Sun at low Galactic latitudes (|b| ă 10˝) with unprecedented accurate distance determinations. Based on the three-dimensional dust reddening map and estimates of colour excesses and distances of over 32 million stars presented in Chen et al, we have identified 567 dust/molecular clouds with a hierarchical structure identification method and obtained their distance estimates by a dust model fitting algorithm. The typical distance uncertainty is less than 5 per cent. As far as we know, this is the first large catalogue of molecular clouds in the Galactic plane with distances derived in a direct manner. The clouds are seen to lie along the Sagittarius, Local and Perseus Arms. In addition to the known structures, we propose the existence of a possible spur, with a pitch angle of about 34˝, connecting the Local and the Sagittarius Arms in the fourth quadrant. We have also derived the physical properties of those molecular clouds. The distribution of cloud properties in different parameter spaces agrees grossly with the previous results. Our cloud sample is an ideal starting point to study the concentration of dust and gas in the solar vicinity and their star formation activities.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Finally, we estimate the mass of each cloud, assuming that the dust is distributed as a thin sheet at its center position (Lombardi et al 2011;Schlafly et al 2015;Chen et al 2017), by,…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A large catalogue of molecular clouds with accurate distances within 4 kpc of the Galactic disc

Chen

Yuan

et al. 2020

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

show abstract

“…To map the 3D dust distribution in the Galactic plane, a procedure similar to that of Green et al (2014) and Chen et al (2017a) is adopted. We divide the sample stars into subfields (pixels) of size 6ˆ6 arcmin.…”

Section: D Colour Excess Distribution Mappingmentioning

confidence: 99%

Three-dimensional interstellar dust reddening maps of the Galactic plane

Chen

Huang

Yuan

et al. 2018

Monthly Notices of the Royal Astronomical Society

149

View full text Add to dashboard Cite

We present new three-dimensional (3D) interstellar dust reddening maps of the Galactic plane in three colours, EpG´K S q, EpG BP´GRP q and EpH´K S q. The maps have a spatial angular resolution of 6 arcmin and covers over 7000 deg 2 of the Galactic plane for Galactic longitude 0˝ă l ă 360˝and latitude |b| ă 10˝. The maps are constructed from robust parallax estimates from the Gaia Data Release 2 (Gaia DR2) combined with the high-quality optical photometry from the Gaia DR2 and the infrared photometry from the 2MASS and WISE surveys. We estimate the colour excesses, EpG´K S q, EpG BP´GRP q and EpH´K S q, of over 56 million stars with the machine learning algorithm Random Forest regression, using a training data set constructed from the large-scale spectroscopic surveys LAMOST, SEGUE and APOGEE. The results reveal the large-scale dust distribution in the Galactic disk, showing a number of features consistent with the earlier studies. The Galactic dust disk is clearly warped and show complex structures possibly spatially associated with the Sagittarius, Local and Perseus arms. We also provide the empirical extinction coefficients for the Gaia photometry that can be used to convert the colour excesses presented here to the line-of-sight extinction values in the Gaia photometric bands.

show abstract

“…Finally, the extinction measurements can also indicate distances (e.g. Chen et al 2017;Zhao et al 2018), which this paper focuses on.…”

Section: Introductionmentioning

confidence: 99%

Distances of Galactic Supernova Remnants Using Red Clump Stars

Shan

Zhu

et al. 2018

ApJS

View full text Add to dashboard Cite

We carry out a project to independently measure the distances of supernova remnants (SNRs) in the first quadrant of the Galaxy. In this project, red clump (RC) stars are used as standard candles and extinction probes to build the optical extinction (A V ) -distance(D) relation in each direction of extinction-known SNRs. The distances of 15 SNRs are well determined. Among them, the distances of G65.8-0.5, G66.0-0.0 and G67.6+0.9 are given for the first time. We also obtain 32 upper/lower limits of distances, and the distances to G5.7-0.1, G15.1-1.6, G28.8+1.5 and G78.2+2.1 are constrained. Most of the distances measured by the RC method are consistent with previous results. The RC method provides an independent access to the distances of SNRs.

show abstract

Mapping the three-dimensional dust extinction towards the supernova remnant S147 – the S147 dust cloud

Cited by 29 publications

References 54 publications

A large catalogue of molecular clouds with accurate distances within 4 kpc of the Galactic disc

A large catalogue of molecular clouds with accurate distances within 4 kpc of the Galactic disc

Three-dimensional interstellar dust reddening maps of the Galactic plane

Distances of Galactic Supernova Remnants Using Red Clump Stars

Contact Info

Product

Resources

About