Table 1.
Photometric LRD selection comparison.
| Kocevski et al. 2025 | Kokorev et al. 2024 | Barro et al. 2024 | F277W − F444W > 1.5 | |
|---|---|---|---|---|
| Photometric Constraint | Photometric V-Shape | Multi-Color | Multi-Color | Single-Color |
| Morphological Constraint | Compact | Compact | Compact | Rest-Opt. PS |
| RUBIES matches | 53/341 (15.54%) | 40(a)/259 (15.44%) | 101/440 (23.30%) | 31 |
| zspec > 3.1 (& PRISM) | 47 (45) | 32 (28) | 84 (72) | 23 (22) |
| Brown dwarfs | 0 | 1 | 1 | 0 |
| Broad Balmer statistics (zspec > 3.1) | ||||
| Confident broad Balmer | 31/47 (65.96%) | 26/32 (81.25%) | 51/84 (60.71%) | 18/23 (78.26%) |
| Unknown (F444W > 26.5) | 10/47 (21.28%) | 1/32 (3.12%) | 15/84 (17.86%) | 3/23 (13.04%) |
| Unknown (F444W < 26.5) | 5/47 (10.64%)(b) | 5/32 (15.62%)(b) | 16/84 (19.05%)(c) | 2/23 (8.70%)(b) |
| Photometric sample makeup (zspec > 3.1 & PRISM & F444W < 26.5) | ||||
| N | 33 | 27 | 59 | 20 |
| Uncertain | 11/33 (33.33%) | 8/27 (29.63%) | 22/57 (38.60%) | 6/20 (30.00%) |
| Confident contamination | 1/33 (3.03%) | 2/27 (7.41%) | 7/57 (12.28%) | 1/20 (5.00%) |
| Spec. LRD | 21/33 (63.64%) | 17/27 (62.96%) | 28/57 (49.12%) | 13/20 (65.00%) |
| Spec. LRD accuracy | 21/22 (95.45%) | 17/19 (89.47%) | 28/35 (80.00%) | 13/14 (92.86%) |
| Spec. LRD completeness | 21/34 (61.76%) | 17/34 (50.00%) | 28/34 (82.35%) | 13/34 (38.24%) |
Notes.
Although there are 41 matches to Kokorev et al. 2024, we find that IDs 1470 and 59971 are the same object in that catalog. This object is only counted once in our analysis.
All uncertain broad Balmer lines with F444W < 26.5 are indeterminate broad, i.e., they lack [O III] or Hα in G395M, or suffer from a DQ issue.
For Barro et al. 2024, 12/16 (75%) uncertain broad Balmer lines with F444W < 26.5 are indeterminate broad. However, we do not detect broad Balmer lines in RUBIES-UDS-28221, RUBIES-UDS-59971, RUBIES-UDS-853923, or RUBIES-UDS-977881 (the z ∼ 7 quiescent galaxy from Weibel et al. 2025), despite full coverage.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.