J/A+A/631/A167 SPT-S J041839-4751.8 APEX spectra (De Breuck+, 2019)
A dense, solar metallicity ISM in the z = 4.2 dusty star-forming galaxy
SPT 0418-47.
De Breuck C., Weiss A., Bethermin M., Cunningham D., Apostolovski Y.,
Aravena M., Archipley M., Chapman S., Chen C.-C., Jarugula S., Malkan M.,
Mangian A., Phadke K., Reuter C., Stacey G., Strandet M., Vieira J.,
Vishwas A.
<Astron. Astrophys. 631, A167 (2019)>
=2019A&A...631A.167D 2019A&A...631A.167D (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, spectra ; Millimetric/submm sources
Keywords: galaxies: ISM - galaxies: high-redshift - submillimeter: galaxies -
submillimeter: ISM
Abstract:
We present a study of six far-infrared fine structure lines in the
z=4.225 lensed dusty star-forming galaxy SPT 0418-47
(SPT-S J041839-4751.8) to probe the physical conditions of its inter
stellar medium (ISM). In particular, we report Atacama Pathfinder
EXperiment (APEX) detections of the [OI] 145um and [OIII] 88um lines
and Atacama Compact Array (ACA) detections of the [NII] 122 and 205um
lines. The [OI] 145um/[CII] 158um line ratio is ∼5x higher compared to
the average of local galaxies. We interpret this as evidence that the
ISM is dominated by photo-dissociation regions with high gas
densities. The line ratios, and in particular those of [OIII] 88um and
[NII] 122um imply that the ISM in SPT 0418-47 is already chemically
enriched to nearly solar metallicity. While the strong gravitational
amplification was required to detect these lines with APEX, larger
samples can be observed with the Atacama Large
Millimeter/submillimeter Array (ALMA), and should allow observers to
determine if the dense, solar metallicity ISM is common among these
highly star-forming galaxies.
Description:
This data release includes the five reduced spectra of the fine
structure lines presented in Fig. 1 of the paper.
Objects:
----------------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------------
04 18 39.27 -47 51 50.1 SPT 0418-47 = SPT-S J041839-4751.8
----------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
cii158.dat 33 48 [CII]158um spectrum of SPT-S J041839-4751.8
oi145.dat 33 26 [OI]145um spectrum of SPT-S J041839-4751.8
oiii88.dat 34 52 [OIII]88um spectrum of SPT-S J041839-4751.8
nii122.dat 33 21 [NII]122um spectrum of SPT-S J041839-4751.8
nii205.dat 36 76 [NII]205um spectrum of SPT-S J041839-4751.8
--------------------------------------------------------------------------------
Byte-by-byte Description of file (#): *.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 F15.11 GHz Freq Sky Frequency
17- 36 F20.15 mJy Flux Flux
--------------------------------------------------------------------------------
Acknowledgements:
Carlos De Breuck, cdebreuc(at)eso.org
(End) Carlos De Breuck [ESO], Patricia Vannier [CDS] 03-Oct-2019