Buchumschlag

WISDOM Project - XXVII. Giant molecular clouds of the lenticular galaxy NGC 1387: similarities with spiral galaxy clouds

Molecular gas is crucial to understanding star formation and galaxy evolution, but the giant molecular clouds (GMCs) of early-type galaxies (ETGs) have rarely been studied. Here, we present analyses of the spatially resolved GMCs of the lenticular galaxy NGC 1387, exploiting high spatial resolution...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Liang, Fuheng (Verfasst von) , Bureau, Martin (Verfasst von) , Liu, Lijie (Verfasst von) , Dominiak, Pandora (Verfasst von) , Choi, Woorak (Verfasst von) , Davis, Timothy A (Verfasst von) , Elford, Jacob (Verfasst von) , Gensior, Jindra (Verfasst von) , Lu, Anan (Verfasst von) , Ruffa, Ilaria (Verfasst von) , Topal, Selçuk (Verfasst von) , Williams, Thomas G (Verfasst von) , Zhang, Hengyue (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: April 2026
In: Monthly notices of the Royal Astronomical Society
Year: 2026, Jahrgang: 547, Heft: 4, Pages: 1-26
ISSN:1365-2966
DOI:10.1093/mnras/stag221
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1093/mnras/stag221
Volltext
Verfasserangaben:Fu-Heng Liang, Martin Bureau, Lijie Liu, Pandora Dominiak, Woorak Choi, Timothy A Davis, Jacob Elford, Jindra Gensior, Anan Lu, Ilaria Ruffa, Selçuk Topal, Thomas G Williams and Hengyue Zhang
Beschreibung
Zusammenfassung:Molecular gas is crucial to understanding star formation and galaxy evolution, but the giant molecular clouds (GMCs) of early-type galaxies (ETGs) have rarely been studied. Here, we present analyses of the spatially resolved GMCs of the lenticular galaxy NGC 1387, exploiting high spatial resolution ($0.15\ \mathrm{ arcsec}$ or 14 pc) $^{12}$CO(2-1) line observations from the Atacama Large Millimeter/submillimeter Array. We identify 1285 individual GMCs and measure the fundamental properties (radius, velocity dispersion, and molecular gas mass) of each with a modified version of the CPROPStoo package. Unusually for an ETG, the GMCs of NGC 1387 follow scaling relations very similar to those of the Milky Way disc and Local Group galaxy clouds, and most are virialized. GMCs with large masses and radii and/or small galactocentric distances have their angular momenta aligned with the large-scale galactic rotation, while other GMCs do not. These results show that ETGs have more diversified GMC properties than previously thought. We discuss potential reasons for such diversity, and viewing-angle dependency is a plausible candidate.
Beschreibung:Online veröffentlicht: 03. Februar 2026
Gesehen am 22.05.2026
Beschreibung:Online Resource
ISSN:1365-2966
DOI:10.1093/mnras/stag221

Ähnliche Einträge