Table · dataset · 2026
FAST Ursa Major Supergroup HI survey (FUMaS)
Listed in IVOA Registry (Virtual Observatory)
Using the Five-hundred-meter Aperture Spherical radio Telescope, we have performed an Ursa Major supergroup HI survey covering the entire UMa region centered at RA=11:59:28.3,DE=49:05:18 with a radius of 7.5{deg}.
Description
We have obtained the most complete catalog of HI sources in the UMa supergroup, containing 178 HI sources with velocities in the range 625-1213.4km/s and masses in the range 10^6.0^-10^10.1^M_{sun}_ assuming a distance of 17.4Mpc.
Among them, 55 HI sources were detected for the first time, of which 32 do not have known optical redshifts. For these 32 sources, we have searched the DESI Legacy Surveys and found optical counterparts for 25 of them (with optical images, but no redshifts), with the remaining seven sources being pure HI clouds without an optical counterpart. We detected HI distributions in some interacting systems and discussed four small groups in detail.
Read the rest (2 more)
We computed the neutral hydrogen mass function (HI MF) of the UMa supergroup using the 1/V_max_ method and fitting it with the nonlinear least-squares (NLLS) and modified maximum likelihood (MML) methods. We obtained the following HI MF parameters: log_10_({phi}*/Mpc^-3^)=-0.78+/-0.15, {alpha}=-1.05+/-0.07, and log_10_(M*/M_{sun}_)=9.87+/-0.19 for the NLLS method, and log_10_({phi}*/Mpc^-3^)=-0.70+/-0.11, {alpha}=-1.05+/-0.05, and log_10_(M*/M_{sun}_)=9.77+/-0.13 for the MML method.
This result is similar to that derived from the Very Large Array blind survey, but the slope is steeper because we detected more low-mass galaxies. The slope is flatter than that of the global HI MF, which agrees with the theoretical prediction that galaxies in high-density regions are stripped of gas due to interactions.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/278/37 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2025ApJS..278...37Y ui.adsabs.harvard.edu/abs/2025ApJS..278...37Y ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/apjs/278/37 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Image 65%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/278/37 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:radio | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (65%) |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |