Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Koch-Hansen, Andreas [VerfasserIn]   i
 Pasquali, Anna [VerfasserIn]   i
 Rich, R. Michael [VerfasserIn]   i
 Gerhard, Ortwin [VerfasserIn]   i
 Müller, Oliver [VerfasserIn]   i
Titel:The halos and environments of nearby galaxies (HERON) survey
Titelzusatz:IV. complexity in the boxy galaxies NGC 720 and NGC 2768
Verf.angabe:Andreas J. Koch-Hansen, Anna Pasquali, R. Michael Rich, Ortwin Gerhard, and Oliver Müller
E-Jahr:2024
Jahr:February 2024
Umfang:6 S.
Fussnoten:Online veröffentlicht: 6. Februar 2024 ; Gesehen am 31.07.2024
Titel Quelle:Enthalten in: Astronomy and astrophysics
Ort Quelle:Les Ulis : EDP Sciences, 1969
Jahr Quelle:2024
Band/Heft Quelle:682(2024) vom: Feb., Artikel-ID A95, Seite 1-6
ISSN Quelle:1432-0746
Abstract:The shapes of galaxies, their outer regions in particular, are important guideposts to their formation and evolution. In this work, we report on the discovery of strongly box-shaped morphologies of the otherwise well-studied elliptical and lenticular galaxies NGC 720 and NGC 2768 from deep imaging. The boxiness is strongly manifested in the parameter shape A4/a of −0.04 in both objects, and significant center shifts of the isophotes of ∼2–4 kpc are also seen. One reason for such asymmetries commonly stated in the literature is a merger origin, although the number of such cases is still sparse, and the exact properties of the individual boxy objects are highly diverse. Indeed, for NGC 2768, we identify a progenitor candidate (dubbed “Pelops”) in the residual images, which appears to be a dwarf satellite that is currently merging with NGC 2768. At its absolute magnitude of Mr of −12.2 mag, the corresponding Sersic radius of 2.4 kpc is more extended than those of typical dwarf galaxies from the literature. However, systematically larger radii are known to occur in systems that are in tidal disruption. This finding is bolstered by the presence of a tentative tidal stream feature on archival GALEX data. Finally, further structures in the fascinating host galaxy include rich dust lanes and a vestigial X-shaped bulge component.
DOI:doi:10.1051/0004-6361/202347940
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

kostenfrei: Volltext: https://doi.org/10.1051/0004-6361/202347940
 kostenfrei: Volltext: https://www.aanda.org/articles/aa/abs/2024/02/aa47940-23/aa47940-23.html
 DOI: https://doi.org/10.1051/0004-6361/202347940
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1897201478
Verknüpfungen:→ Zeitschrift

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/69239083   QR-Code
zum Seitenanfang