2017ApJ...843L..11T


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.30CET22:46:09

2017ApJ...843L..11T - Astrophys. J., 843, L11-L11 (2017/July-1)

Discovery of two small high-velocity compact clouds in the central 10pc of our Galaxy.

TAKEKAWA S., OKA T., IWATA Y., TOKUYAMA S. and NOMURA M.

Abstract (from CDS):

We discovered two small high-velocity compact clouds (HVCCs) in the HCN J = 4-3 and J = 3-2 maps of the central 20 pc of our Galaxy. Both HVCCs have broad velocity widths (ΔV 40 km s–1) and compact sizes (d∼1 pc), and originate from the dense molecular clouds in the position-velocity space. One of them has a faint counterpart in a Paschen-α image. Their spatial structure, kinematics, and absence of luminous stellar object are compatible with the notion that each of the small HVCCs is driven by the plunge of an invisible compact object into a molecular cloud. Such objects are most likely inactive, isolated black holes.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: nuclei - Galaxy: center - ISM: clouds - ISM: molecules - ISM: molecules

Nomenclature: Fig.1: [TOI2017] HCN-L.lll+B.bbb N=2.

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GCM -0.13 -0.08 MoC 17 45 25.2 -29 05 30           ~ 107 1
2 CO -000.40-00.22 MoC 17 45.5 -29 24           ~ 16 0
3 NAME Galactic Circumnuclear Disk PoG 17 45 40.0 -29 00 28           ~ 113 0
4 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3543 3
5 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11835 0
6 CO 000.02-00.02 MoC 17 45.7 -28 56           ~ 25 0
7 CXOGC J174546.0-285756 X 17 45 46.10 -28 57 56.6           ~ 3 0
8 [TOI2017] HCN-0.009-0.044 HVC 17 45 46 -28 58.0           ~ 5 0
9 [TOI2017] HCN-0.085-0.094 HVC 17 45 47 -29 03.5           ~ 4 0
10 GCM -0.02 -0.07 MoC 17 45 50.4 -28 59 06           ~ 143 0
11 NAME Sgr B1 MoC 17 47 02.0 -28 31 57           ~ 129 0
12 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 834 2

    Equat.    Gal    SGal    Ecl

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2020.11.30-22:46:09

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