2019ApJ...885...71A

Query : 2019ApJ...885...71A

2019ApJ...885...71A - Astrophys. J., 885, 71-71 (2019/November-1)

2 mm GISMO observations of the Galactic Center. I. Dust emission.

ARENDT R.G., STAGUHN J., DWEK E., MORRIS M.R., YUSEF-ZADEH F., BENFORD D.J., KOVACS A. and GONZALEZ-QUILES J.

Abstract (from CDS):

The central molecular zone, covering the inner ∼1° of the Galactic plane has been mapped at 2 mm using the Goddard-IRAM Superconducting 2-Millimeter Observer (GISMO) bolometric camera on the 30 m IRAM telescope. The 21'' resolution maps show abundant emission from cold molecular clouds, from star-forming regions, and from one of the Galactic center nonthermal filaments. In this work we use the Herschel Hi-GAL data to model the dust emission across the Galactic center. We find that a single-temperature fit can describe the 160-500 µm emission for most lines of sight, if the long-wavelength dust emissivity scales as λ–β with β ≃ 2.25. This dust model is extrapolated to predict the 2 mm dust emission. Subtraction of the model from the GISMO data provides a clearer look at the 2 mm emission of star-forming regions and the brightest nonthermal filament.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Interstellar dust - Dust continuum emission - Far infrared astronomy - Millimeter astronomy - Galactic center - Radio continuum emission

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Sgr C MoC 17 44 36.3 -29 28 13           ~ 400 0
2 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 955 0
3 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
4 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
5 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 792 0
6 NAME Sgr A D Em* 17 45 51.54 -29 00 23.2           ~ 24 0
7 NAME Sgr A A MoC 17 45 52.00 -28 59 26.2           ~ 41 0
8 NAME Sgr A B Rad 17 45 52.17 -28 59 36.4           ~ 19 0
9 NAME Sgr A C Rad 17 45 52.49 -29 00 00.0           ~ 19 0
10 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 561 0
11 NAME Sickle HII 17 46 15.2 -28 49 49           ~ 128 0
12 [FMM95] 3 s*b 17 46 15.240 -28 50 03.58           LBV 151 1
13 NAME Pistol HII 17 46 16 -28 50.0           ~ 72 0
14 NAME Galactic Center Radio Arc Rad 17 46 16.9 -28 48 52           ~ 132 0
15 NAME Sgr B1 MoC 17 47 02.0 -28 31 57           ~ 177 0
16 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1

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