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The massive relic galaxy NGC 1277 is dark matter deficient : From dynamical models of integral-field stellar kinematics out to five effective radii

Abstract:

According to the Λ cold dark matter (Λ CDM) cosmology, present-day galaxies with stellar masses M∗>1011M⊙ should contain a sizable fraction of dark matter within their stellar body. Models indicate that in massive early-type galaxies (ETGs) with M∗≈1.5 × 1011M⊙, dark matter should account for ~15% of the dynamical mass within one effective radius (1Re) and for ~60% within 5Re. Most massive ETGs have been shaped through a two-phase process: the rapid growth of a compact core was followed by...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1051/0004-6361/202346291

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
ORCID:
0000-0002-1283-8420
Publisher:
EDP Sciences
Journal:
Astronomy and Astrophysics More from this journal
Volume:
675
Article number:
A143
Publication date:
2023-07-11
Acceptance date:
2023-06-06
DOI:
EISSN:
1432-0746
ISSN:
0004-6361

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