Table · dataset · 2023
Study of the young open cluster NGC 1960
Listed in IVOA Registry (Virtual Observatory)
We present a comprehensive photometric analysis of a young open cluster NGC 1960 (=M36) along with the long-term variability study of this cluster.
Description
Based on the kinematic data of Gaia DR2, the membership probabilities of 3871 stars are ascertained in the cluster field among which 262 stars are found to be cluster members. Considering the kinematic and trigonometric measurements of the cluster members, we estimate a mean cluster parallax of 0.86+/-0.05mas and mean proper motions of {mu}RA=-0.143+/-0.008mas/yr and {mu}Dec.=-3.395+/-0.008mas/yr.
We obtain basic parameters of the cluster such as E(B-V)=0.24+/-0.02 mag, log(Age/yr)=7.44+/-0.02, and d=1.17+/-0.06kpc. The mass function slope in the cluster for the stars in the mass range of 0.72-7.32M_{sun}_ is found to be {gamma}=-1.26+/-0.19. We find that mass segregation is still taking place in the cluster which is yet to be dynamically relaxed.
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This work also presents first high-precision variability survey in the central 13arcminx13arcmin region of the cluster. The V-band photometric data accumulated on 43 nights over a period of more than 3yr reveals 76 variable stars among which 72 are periodic variables. Among them, 59 are short period (P<1d) and 13 are long period (P>1d).
The variable stars have V magnitudes ranging between 9.1 to 19.4mag and periods between 41min and 10.74d. On the basis of their locations in the H-R diagram, periods, and characteristic light curves, 20 periodic variables belong to the cluster are classified as 2 {delta}-Scuti, 3 {gamma}-Dor, 2 slowly pulsating B stars, 5 rotational variables, 2 non-pulsating B stars, and 6 as miscellaneous variables.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/492/3602 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2020MNRAS.492.3602J ui.adsabs.harvard.edu/abs/2020MNRAS.492.3602J ↗
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/mnras/492/3602 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 75%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/mnras/492/3602 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (75%) |
| 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 | |
| concepts[modality].ivoa_waveband:optical | 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 |