Table · dataset · 2015
RR Lyrae stars in M4. II. Spitzer/IRAC phot.
Listed in IVOA Registry (Virtual Observatory)
New mid-infrared (MIR) period-luminosity (PL) relations are presented for RR Lyrae variables in the globular cluster M4 (NGC 6121).
Description
Accurate photometry was obtained for 37 RR Lyrae variables using observations from the Infrared Array Camera on board the Spitzer Space Telescope. The dispersion of M4's PL relations is 0.056, and the uncertainty in the slope is 0.11mag.
Additionally, we established calibrated PL relations at 3.6 and 4.5{mu}m using published Hubble Space Telescope geometric parallaxes of five Galactic RR Lyrae stars. The resulting band-averaged distance modulus for M4 is {mu}=11.399+/-0.007(stat)+/-0.080(syst)+/-0.015(cal)+/-0.020(ext). The systematic uncertainty will be greatly reduced when parallaxes of more stars become available from the GAIA mission.
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Optical and infrared period-color (PC) relations are also presented, and the lack of an MIR PC relation suggests that RR Lyrae stars are not affected by CO absorption in the 4.5{mu}m band.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/808/11 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2015ApJ...808...11N ui.adsabs.harvard.edu/abs/2015ApJ...808...11N ↗
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/apj/808/11 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/808/11 | 14 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:infrared | source · 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 |