2018A&A...617A.101R


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST17:45:34

2018A&A...617A.101R - Astronomy and Astrophysics, volume 617A, 101-101 (2018/9-1)

Interstellar magnetic cannon targeting the Galactic halo. A young bubble at the origin of the Ophiuchus and Lupus molecular complexes.

ROBITAILLE J.-F., SCAIFE A.M.M., CARRETTI E., HAVERKORN M., CROCKER R.M., KESTEVEN M.J., POPPI S. and STAVELEY-SMITH L.

Abstract (from CDS):

We report the detection of a new Galactic bubble at the interface between the halo and the Galactic disc. We suggest that the nearby Lupus complex and parts of the Ophiuchus complex constitute the denser parts of the structure. This young bubble, ≤3Myr old, could be the remnant of a supernova and it expands inside a larger HI loop that has been created by the outflows of the Upper Scorpius OB association. An HI cavity filled with hot X-ray gas is associated with the structure, which is consistent with the Galactic chimney scenario. The X-ray emission extends beyond the west and north-west edges of the bubble, suggesting that hot gas outflows are breaching the cavity, possibly through the fragmented Lupus complex. Analyses of the polarised radio synchrotron and of the polarised dust emission of the region suggest the connection of the Galactic centre spur with the young Galactic bubble. A distribution of HI clumps that spatially corresponds well to the cavity boundaries was found at VLSR~=-100km/s. Some of these HI clumps are forming jets, which may arise from the fragmented part of the bubble. We suggest that these clumps might be "dripping" cold clouds from the shell walls inside the cavity that is filled with hot ionised gas. It is possible that some of these clumps are magnetised and were then accelerated by the compressed magnetic field at the edge of the cavity. Such a mechanism would challenge the Galactic accretion and fountain model, where high-velocity clouds are considered to be formed at high Galactic latitude from hot gas flows from the Galactic plane.

Abstract Copyright: © ESO 2018

Journal keyword(s): ISM: general - ISM: structure - ISM: magnetic fields - ISM: bubbles - polarization - ISM: jets and outflows

Simbad objects: 26

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Number of rows : 26

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 North Polar Spur ISM 12 00 +00.0           ~ 301 1
2 V* V716 Cen bL* 14 13 39.8247838041 -54 37 32.260960888   6.13 6.09     B5V 58 0
3 NAME Loop I SR? 15 01 -38.7           ~ 328 2
4 NAME Upper Centaurus Lupus As* 15 24 -41.9           ~ 358 1
5 NAME Lupus I Cld 15 43 02.1 -34 09 06           ~ 224 0
6 NAME Lup II MoC 15 57 08 -37 47.1           ~ 90 1
7 LBN 1099 HII 16 00.6 -22 56           ~ 15 0
8 NAME Lup Cloud SFR 16 03 -38.1           ~ 517 0
9 NAME Lupus IV MoC 16 03 12.4 -42 07 43           ~ 125 0
10 NAME Lupus III SFR 16 09.6 -39 03           ~ 271 0
11 NAME Upper Sco Association As* 16 12 -23.4           ~ 1021 1
12 NAME ASSOC II SCO As* 16 15 -24.2           ~ 1120 1
13 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3027 0
14 LDN 1709 DNe 16 31 34.8 -24 02 55           ~ 66 0
15 LDN 1689 DNe 16 32 22.5 -24 28 29           ~ 109 0
16 LBN 006.00+24.73 HII 16 35 56.8 -12 43 05           ~ 51 0
17 * zet Oph Be* 16 37 09.5390545 -10 34 01.529471 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1724 2
18 NAME Galactic Center Spur Rad 16 41 -39.1           ~ 12 1
19 LDN 1729 DNe 16 43.0 -24 06           ~ 31 0
20 LDN 1755 DNe 16 43.5 -21 58           ~ 35 0
21 NAME Fermi Bubbles bub 17 45 -29.0           ~ 271 0
22 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11542 0
23 NAME Sgr Arm PoG 19 00 -30.0           ~ 523 1
24 PSR B1929+10 Psr 19 32 13.79 +10 59 33.2           ~ 695 0
25 NAME Gal Center Positive HVC 20 51.2 +01 41           ~ 75 1
26 NAME Gould Belt PoG ~ ~           ~ 711 1

    Equat.    Gal    SGal    Ecl

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2020.07.14-17:45:34

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