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Title: A Deeper Look into eFEDS AGN Candidates in Dwarf Galaxies with Chandra
Abstract The ability to accurately discern active massive black holes (BHs) in nearby dwarf galaxies is paramount to understanding the origins and processes of “seed” BHs in the early Universe. We present Chandra X-ray Observatory observations of a sample of three local dwarf galaxies (M*≤ 3 × 109M⊙,z≤ 0.15) previously identified as candidates for hosting active galactic nuclei (AGN). The galaxies were selected from the NASA-Sloan Atlas with spatially coincident X-ray detections in the eROSITA Final Equatorial Depth Survey. Our new Chandra data reveal three X-ray point sources in two of the target galaxies with luminosities between log(L2−10 keV[erg s−1]) = 39.1 and 40.4. Our results support the presence of an AGN in these two galaxies and an ultraluminous X-ray source (ULX) in one of them. For the AGNs, we estimate BH masses ofMBH∼ 105−6M⊙and Eddington ratios on the order of ∼10−3.  more » « less
Award ID(s):
2235277
PAR ID:
10546145
Author(s) / Creator(s):
; ; ;
Publisher / Repository:
DOI PREFIX: 10.3847
Date Published:
Journal Name:
The Astrophysical Journal
Volume:
974
Issue:
1
ISSN:
0004-637X
Format(s):
Medium: X Size: Article No. 3
Size(s):
Article No. 3
Sponsoring Org:
National Science Foundation
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