2016A&A...596A..94R


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.14CEST14:08:08

2016A&A...596A..94R - Astronomy and Astrophysics, volume 596A, 94-94 (2016/12-1)

All-sky census of Galactic high-latitude molecular intermediate-velocity clouds.

ROHSER T., KERP J., LENZ D. and WINKEL B.

Abstract (from CDS):

Context. The HI halo clouds of the Milky Way, and in particular the intermediate-velocity clouds (IVCs), are thought to be connected to Galactic fountain processes. Observations of fountain clouds are important for understanding the role of matter recycling and accretion onto the Galactic disk and subsequent star formation.
Aims. Here, we quantify the amount of molecular gas in the Galactic halo. We focus on the rare class of molecularIVCs (MIVCs) and search for new objects.
Methods. The HI-FIR correlation was studied across the entire northern and southern Galactic hemispheres at Galactic latitudes |b|>20° to determine the amount and distribution of molecular gas inIVCs. We used the most recent large-scale HI and FIR data, the Effelsberg Bonn-HI Survey, the Parkes Galactic All-Sky Survey, and the Planck FIR surveys.
Results. We present a catalogue of 239 MIVC candidates on the northern and southern Galactic hemispheres. Among these candidates, all previously known MIVCs are recovered except for one single source. The frequency of candidates differs significantly between the northern and southern Galactic hemispheres and between negative and positive LSR velocities as well. Conclusions.In our approach we analyse the local Galactic environment. Extrapolating our results to the entire Galaxy, the global inflow of atomic and molecularIVC gas onto the Milky Way may account for the major fraction of the gaseous mass that is required to sustain the current Galactic star formation rate.

Abstract Copyright: © ESO, 2016

Journal keyword(s): Galaxy: halo - ISM: clouds - ISM: molecules - catalogs

Simbad objects: 8

goto Full paper

goto View the reference in ADS

Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NAME Magellanic Stream HVC 00 32 -30.0           ~ 773 1
2 NAME SGP reg 00 51 26.275 -27 07 41.70           ~ 497 0
3 GAL 210.8+63.1 MoC 10 53 04.1 +24 56 09           ~ 9 0
4 HRK 135.3+54.5 Cld 11 51 39 +61 13.3           ~ 21 0
5 [MS2010] G283.8+54.9 MoC 12 07 46.0 -06 18 00           ~ 2 0
6 [MS2010] G288.4+53.2 MoC 12 16 29.2 -08 41 29           ~ 2 0
7 [MS2010] G295.0+57.1 MoC 12 34 11.0 -05 27 45           ~ 2 0
8 NAME Draco Nebula RNe 16 52 +61.0           ~ 46 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2016A&A...596A..94R and select 'bookmark this link' or equivalent in the popup menu


2019.10.14-14:08:08

© Université de Strasbourg/CNRS

    • Contact