2016A&A...585A..38J


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.23CEST22:42:30

2016A&A...585A..38J - Astronomy and Astrophysics, volume 585A, 38-38 (2016/1-1)

Allsky NICER and NICEST extinction maps based on the 2MASS near-infrared survey.

JUVELA M. and MONTILLAUD J.

Abstract (from CDS):

Extinction remains one of the most reliable methods of measuring column density of nearby Galactic interstellar clouds. The current and ongoing near-infrared surveys enable the mapping of extinction over large sky areas. We produce allsky extinction maps using the 2MASS near-infrared survey. We use the NICER and NICEST methods to convert the near-infrared colour excesses to extinction estimates. The results are presented in Healpix format at the resolutions of 3.0, 4.5, and 12.0-arcmin. The main results of this study are the calculated J-band extinction maps. The comparison with earlier large-scale extinction mappings shows good correspondence but also demonstrates the presence of resolution-dependent bias. A large fraction of the bias can be corrected by using the NICEST method. For individual regions, best extinction estimates are obtained by careful analysis of the local stellar population and the use of the highest resolution afforded by the stellar density. However, the uniform allsky maps should still be useful for many global studies and as the first step into the investigation of individual clouds.

Abstract Copyright:

Journal keyword(s): ISM: clouds - infrared: ISM - submillimeter: ISM - dust, extinction - stars: formation

VizieR on-line data: <Available at CDS (J/A+A/585/A38): list.dat fits/*>

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Per Region reg 03 37 00.0 +31 15 00           ~ 231 0
2 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1222 0
3 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3531 0
4 M 42 HII 05 35 17.3 -05 23 28           ~ 3743 0
5 NAME Polaris Flare MoC 11 00 14.8 +86 10 52           ~ 162 1
6 NAME Lup Cloud SFR 16 03 -38.1           ~ 530 0
7 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3056 0
8 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 339 1
9 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11671 0

    Equat.    Gal    SGal    Ecl

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2020.09.23-22:42:31

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