Mostrar el registro sencillo del ítem

The ALMA Frontier Fields Survey: III. 1.1 mm emission line identifications in Abell 2744, MACSJ 0416.1-2403, MACSJ 1149.5+2223, Abell 370, and Abell S1063

dc.contributor.authorGonzález-López J.
dc.contributor.authorBauer F.E.
dc.contributor.authorAravena M.
dc.contributor.authorLaporte N.
dc.contributor.authorBradley L.
dc.contributor.authorCarrasco M.
dc.contributor.authorCarvajal R.
dc.contributor.authorDemarco R.
dc.contributor.authorInfante L.
dc.contributor.authorKneissl R.
dc.contributor.authorKoekemoer A.M.
dc.contributor.authorMuñoz Arancibia A.M.
dc.contributor.authorTroncoso P.
dc.contributor.authorVillard E.
dc.contributor.authorZitrin A.
dc.date.accessioned2020-09-02T22:19:24Z
dc.date.available2020-09-02T22:19:24Z
dc.date.issued2017
dc.identifier10.1051/0004-6361/201730961
dc.identifier.citation608, , -
dc.identifier.issn00046361
dc.identifier.urihttps://hdl.handle.net/20.500.12728/4727
dc.descriptionContext. Most sub-mm emission line studies of galaxies to date have targeted sources with known redshifts where the frequencies of the lines are well constrained. Recent blind line scans circumvent the spectroscopic redshift requirement, which could represent a selection bias. Aims. Our aim is to detect emission lines present in continuum oriented observations. The detection of these lines provides spectroscopic redshift information and yields important properties of the galaxies. Methods. We perform a search for emission lines in the Atacama Large Millimeter/submillimeter Array observations of five clusters which are part of the Frontier Fields and assess the reliability of our detection. We additionally investigate plausibility by associating line candidates with detected galaxies in deep near-infrared imaging. Results. We find 26 significant emission lines candidates, with observed line fluxes between 0.2-4.6 Jy kms-1and velocity dispersions (FWHM) of 25-600kms-1. Nine of these candidates lie in close proximity to near-infrared sources, boosting their reliability; in six cases the observed line frequency and strength are consistent with expectations given the photometric redshift and properties of the galaxy counterparts. We present redshift identifications, magnifications, and molecular gas estimates for the galaxies with identified lines. We show that two of these candidates likely originate from starburst galaxies, one of which is a so-called jellyfish galaxy that is strongly affected by ram pressure stripping, while another two are consistent with being main sequence galaxies based in their depletion times. Conclusions. This work highlights the degree to which serendipitous emission lines can be discovered in large mosaic continuum observations when deep ancillary data are available. The low number of high-significance line detections, however, confirms that such surveys are not as optimal as blind line scans. We stress that Monte Carlo simulations should be used to assess the line detection significances since using the negative noise suffers from stochasticity and incurs significantly larger uncertainties. © ESO, 2017.
dc.language.isoen
dc.publisherEDP Sciences
dc.subjectGalaxies: high-redshift
dc.subjectGravitational lensing: strong
dc.subjectISM: lines and bands
dc.subjectSubmillimeter: ISM
dc.subjectElectromagnetic wave emission
dc.subjectInfrared devices
dc.subjectInfrared imaging
dc.subjectIntelligent systems
dc.subjectLight sources
dc.subjectMonte Carlo methods
dc.subjectSurveys
dc.subjectThermography (imaging)
dc.subjectUncertainty analysis
dc.subjectAtacama large millimeter/sub-millimeter arrays
dc.subjectGalaxies:high-redshift
dc.subjectGravitational lensing: strong
dc.subjectISM: lines and bands
dc.subjectNear-infrared imaging
dc.subjectRam-pressure stripping
dc.subjectSubmillimeter: isms
dc.subjectVelocity dispersion
dc.subjectGalaxies
dc.titleThe ALMA Frontier Fields Survey: III. 1.1 mm emission line identifications in Abell 2744, MACSJ 0416.1-2403, MACSJ 1149.5+2223, Abell 370, and Abell S1063
dc.typeArticle


Ficheros en el ítem

Thumbnail
Nombre:
item_2-s2.0-85039983642.pdf
Tamaño:
3.877Kb
Formato:
PDF
Ver/

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem