Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
 
 
DownloadE-Mail
 Lokale TagsFreigabegeschichteDetailsÜbersicht
  Merger-driven star formation activity in Cl J1449+0856 at z = 1.99 as seen by ALMA and JVLA

Coogan, R. T., Daddi, E., Sargent, M. T., Strazzullo, V., Valentino, F., Gobat, R., et al. (2018). Merger-driven star formation activity in Cl J1449+0856 at z = 1.99 as seen by ALMA and JVLA. Monthly Notices of the Royal Astronomical Society, 479, 703-729.

Item is

 

einblenden: alle ausblenden: alle

Basisdaten

einblenden: ausblenden:
Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0005-CE3E-F Versions-Permalink: https://hdl.handle.net/21.11116/0000-0005-CE3F-E
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:
ausblenden:
externe Referenz:
https://ui.adsabs.harvard.edu/abs/2018MNRAS.479..703C (beliebiger Volltext)
Beschreibung:
-
OA-Status:

Urheber

einblenden:
ausblenden:
 Urheber:
Coogan, R. T.1, Autor
Daddi, E.1, Autor
Sargent, M. T.1, Autor
Strazzullo, V.1, Autor
Valentino, F.1, Autor
Gobat, R.1, Autor
Magdis, G.1, Autor
Bethermin, M.1, Autor
Pannella, M.1, Autor
Onodera, M.1, Autor
Liu, D.1, Autor
Cimatti, A.1, Autor
Dannerbauer, H.1, Autor
Carollo, M.1, Autor
Renzini, A.1, Autor
Tremou, E.1, Autor
Affiliations:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

Inhalt

einblenden:
ausblenden:
Schlagwörter: galaxies: clusters: individual: Cl J1449+0856 galaxies: evolution galaxies: high-redshift galaxies: ISM galaxies: star formation Astrophysics - Astrophysics of Galaxies
 Zusammenfassung: We use Atacama Large Millimetre Array and Jansky Very Large Array observations of the galaxy cluster Cl J1449+0856 at z = 1.99, in order to study how dust-obscured star formation, interstellar medium content, and active galactic nuclei activity are linked to environment and galaxy interactions during the crucial phase of high-z cluster assembly. We present detections of multiple transitions of 12CO, as well as dust continuum emission detections from 11 galaxies in the core of Cl J1449+0856. We measure the gas excitation properties, star formation rates, gas consumption timescales, and gas-to-stellar mass ratios for the galaxies. We find evidence for a large fraction of galaxies with highly excited molecular gas, contributing >50 per cent to the total star formation rate (SFR) in the cluster core. We compare these results with expectations for field galaxies, and conclude that environmental influences have strongly enhanced the fraction of excited galaxies in this cluster. We find a dearth of molecular gas in the galaxies' gas reservoirs, implying a high star formation efficiency (SFE) in the cluster core, and find short gas depletion timescales τdep < 0.1-0.4 Gyr for all galaxies. Interestingly, we do not see evidence for increased specific SFRs (sSFRs) in the cluster galaxies, despite their high SFEs and gas excitations. We find evidence for a large number of mergers in the cluster core, contributing a large fraction of the core's total star formation compared with expectations in the field. We conclude that the environmental impact on the galaxy excitations is linked to the high rate of galaxy mergers, interactions, and active galactic nuclei in the cluster core.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2018
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: -
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Monthly Notices of the Royal Astronomical Society
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 479 Artikelnummer: - Start- / Endseite: 703 - 729 Identifikator: -