Table · dataset · 2019
[TT2009] 25 vicinity VI photometry
Listed in IVOA Registry (Virtual Observatory)
Dwarf galaxies are key objects for small-scale cosmological tests like the abundance problems or the planes-of-satellites problem.
Description
A crucial task is therefore to get accurate information for as many nearby dwarf galaxies as possible. Using extremely deep, groundbased V and i-band Subaru Suprime Cam photometry with a completeness of i=27mag, we measure the distance of the dwarf galaxy [TT2009] 25 using the tip of the red giant branch (RGB) as a standard candle.
This dwarf resides in the field around the Milky Way-analog NGC891. Using a Bayesian approach, we measure a distance of 10.28Mpc, which is consistent with the distance of NGC891, and thus confirm it as a member of NGC891. The dwarf galaxy follows the scaling relations defined by the Local Group dwarfs.
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We do not find an extended stellar halo around [TT2009] 25. In the small field of view of 100kpc covered by the survey, only one bright dwarf galaxy and the giant stream are apparent. This is comparable to the Milky Way, where one bright dwarf resides in the same volume, as well as the Sagittarius stream - excluding satellites which are farther away but would be projected in the line-of-sight.
It is thus imperative to survey for additional dwarf galaxies in a larger area around NGC891 to test the abundance of dwarf galaxies and compare this to the number of satellites around the Milky Way.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/629/L2 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2019A&A...629L...2M ui.adsabs.harvard.edu/abs/2019A%26A...629L...2M ↗
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/a%2Ba/629/l2 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/629/l2 | 15 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 | |
| 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 |