2001A&A...372..651S


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.04CEST15:55:08

2001A&A...372..651S - Astronomy and Astrophysics, volume 372, 651-662 (2001/6-3)

X-ray emission from the giant molecular clouds in the Galactic Center region and the discovery of new X-ray sources.

SIDOLI L., MEREGHETTI S., TREVES A., PARMAR A.N., TUROLLA R. and FAVATA F.

Abstract (from CDS):

We report the results of X-ray (2-10keV) observations of the giant molecular clouds Sgr B, Sgr C and Sgr D in the Galactic Center region, together with the discovery of the point-like source SAX J1748.2-2808. The data have been obtained with the MECS instrument on the BeppoSAX satellite. The core of Sgr B2 has an X-ray luminosity of ∼6x1034erg/s and its spectrum is characterized by a strong Fe emission line at ∼6.5keV with an equivalent width of 2keV. Faint diffuse X-ray emission is detected from Sgr C and from the SNR G1.05-0.15 (Sgr D). A new, unresolved source with a strong Fe line has been discovered in the Sgr D region. This source, SAX J1748.2-2808, is probably associated with a SiO and OH maser source at the Galactic Center distance. If so, its luminosity is 1034erg/s. We propose that the X-ray emission from SAX J1748.2-2808 is produced either by protostars or by a giant molecular cloud core. Emission from sources similar to SAX J1748.2-2808 could have an impact on the expected contribution on the observed Fe line emission from the Galactic ridge.

Abstract Copyright:

Journal keyword(s): Galaxy: center - ISM: clouds: individual: Sgr B, Sgr C, Sgr D - ISM: supernova remnants: individual: G1.05-0.15 - X-rays: ISM - X-rays: stars: individual: SAX J1748.2-2808

Simbad objects: 15

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Number of rows : 15

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 NGC 2264 OpC 06 40 58 +09 53.7     3.9     ~ 1592 1
2 NGC 6334 HII 17 20 51 -36 06.9           ~ 586 0
3 NAME Sgr C MoC 17 44 36.3 -29 28 13           ~ 308 0
4 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 916 0
5 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11605 0
6 2E 3944 LXB 17 46 21.09 -28 43 42.3           ~ 103 0
7 NAME Sgr B1 MoC 17 47 02.0 -28 31 57           ~ 124 0
8 NAME Sgr B MoC 17 47 02 -28 25.4           ~ 189 0
9 SNR G000.9+00.1 SNR 17 47.3 -28 09           ~ 168 1
10 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1919 1
11 IRAS 17450-2807 * 17 48 14.496 -28 08 53.31           ~ 8 0
12 SAX J1748.2-2808 X 17 48 16 -28 08.2           ~ 9 0
13 NAME Sgr D MoC 17 48 41.75 -28 01 45.0           ~ 118 1
14 NAME Sgr D HII HII 17 48 41.79 -28 01 41.3           ~ 62 1
15 NAME Sgr D SNR SNR 17 48.7 -28 07           ~ 15 0

    Equat.    Gal    SGal    Ecl

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2020.08.04-15:55:08

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