Near-infrared photometry and spectroscopy of the low Galactic latitude globular cluster 2MASS-GC03
arXiv:1607.05286 · doi:10.1093/mnras/stw1674
Abstract
We present deep near-infrared photometry and spectroscopy of the globular cluster 2MASS-GC03 projected in the Galactic disk using MMIRS on the Clay telescope (Las Campanas Observatory) and VISTA Variables in the Via Lactea survey (VVV) data. Most probable cluster member candidates were identified from near-infrared photometry. Out of ten candidates that were followed-up spectroscopically, five have properties of cluster members, from which we calculate <[Fe/H]> = -0.9 +- 0.2 and a radial velocity of v_r > = -78 +- 12km/s. A distance of 10.8kpc is estimated from 3 likely RRLyrae members. Given that the cluster is currently at a distance of 4.2kpc from the Galactic center, the cluster's long survival time of an estimated 11.3 +- 1.2Gyr strengthens the case for its globular-cluster nature. The cluster has a hint of elongation in the direction of the Galactic center.
arXiv commentAccepted for publication, MNRAS
References in corpus (53)
- The Sloan Digital Sky Survey: Technical Summary
- PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
- The Milky Way Tomography with SDSS: I. Stellar Number Density Distribution
- VISTA Variables in the Via Lactea (VVV): The public ESO near-IR variability survey of the Milky Way
- The PPMXL catalog of positions and proper motions on the ICRS. Combining USNO-B1.0 and 2MASS
- Na-O Anticorrelation and HB. VII. The chemical composition of first and second-generation stars in 15 globular clusters from GIRAFFE spectra
- Molecfit: A general tool for telluric absorption correction. I. Method and application to ESO instruments
- Global survey of star clusters in the Milky Way II. The catalogue of basic parameters
- Molecfit: A general tool for telluric absorption correction II. Quantitative evaluation on ESO-VLT X-Shooter spectra
- VVV DR1: The First Data Release of the Milky Way Bulge and Southern Plane from the Near-Infrared ESO Public Survey VISTA Variables in the Via Lactea
- A New Milky Way Companion: Unusual Globular Cluster or Extreme Dwarf Satellite?
- An analytical description of the disruption of star clusters in tidal fields with an application to Galactic open clusters
- Massive Stars in the Arches Cluster
- Two Red Clumps and the X-Shaped Milky Way Bulge
- Star cluster disruption by giant molecular clouds
- A census of the Wolf-Rayet content in Westerlund 1 from near-infrared imaging and spectroscopy
- A systematic survey for infrared star clusters with |b|<20deg using 2MASS
- Age and helium content of the open cluster NGC 6791 from multiple eclipsing binary members. II. age dependencies and new insights
- Near-IR properties of 24 Globular Clusters in the Galactic Bulge
- Open clusters in dense fields: the importance of field-star decontamination for NGC5715, Lynga4, Lynga9, Trumpler23, Trumpler26 and Czernik37
- The discovery of two extremely low luminosity Milky Way globular clusters
- An Age Difference of 2 Gyr between a Metal-Rich and a Metal-Poor Globular Cluster
- New Galactic Star Clusters Discovered in the VVV Survey
- Probing disk properties with open clusters
- A new distant Milky Way globular cluster in the Pan-STARRS1 3π survey
- The long Galactic bar as seen by UKIDSS Galactic Plane Survey
- Discovery of a Faint Outer Halo Milky Way Star Cluster in the Southern Sky
- Red Giant Branch Bump Brightness and Number Counts in 72 Galactic Globular Clusters Observed with the Hubble Space Telescope
- Outer density profiles of 19 Galactic globular clusters from deep and wide-field imaging
- An Accurate, Easy to Use Abundace Scale for Globular Clusters Based on 2.2um Spectra of Giant Stars
- Discovery of VVV CL001. A Low-Mass Globular Cluster Next to UKS~1 in the Direction of the Galactic Bulge
- New near-infrared period-luminosity-metallicity relations for RR Lyrae stars and the outlook for Gaia
- Three Galactic globular cluster candidates
- Gravitational tidal effects on galactic open clusters
- New galactic star clusters discovered in the VVV survey. Candidates projected on the inner disk and bulge
- MMT & Magellan Infrared Spectrograph
- A new Milky Way halo star cluster in the Southern Galactic Sky
- Orbital evolution of the Carina dwarf galaxy and self-consistent star formation history determination
- Properties of Star Clusters - II: Scale Height Evolution of Clusters
- The Discovery of an Ultra-Faint Star Cluster in the Constellation of Ursa Minor
- GLIMPSE-CO1: the most massive intermediate-age stellar cluster in the Galaxy
- Interstellar extinction towards open clusters and galactic structure
- The fate of the pre-main sequence-rich clusters Collinder197 and vdB92: dissolution?
- Discovery of a New Low-Latitude Milky Way Globular Cluster using GLIMPSE
- Whiting 1: a new Halo Young Globular Cluster
- FSR1735 -- A new globular cluster candidate in the inner Galaxy
- A deep view of the Monoceros ring in the Anticenter direction: clues of its extra-Galactic origin
- Period Estimation in Astronomical Time Series Using Slotted Correntropy
- UBVI CCD Photometry of the Old Open Cluster Berkeley 17
- Mining the VVV: star formation and embedded clusters
- The VVV-SkZ pipeline: an automatic PSF-fitting photometric pipeline for the VVV survey
- Infrared extinction in the Inner Milky Way through the red clump giants
- From proper motions to star cluster dynamics: measuring velocity dispersion in deconvolved distribution functions
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- Mean proper motions, space orbits and velocity dispersion profiles of Galactic globular clusters derived from Gaia DR2 data
- Accurate distances to Galactic globular clusters through a combination of Gaia EDR3, HST and literature data
- Proper motions and dynamics of the Milky Way globular cluster system from Gaia DR2
- VIRAC: The VVV Infrared Astrometric Catalogue
- FSR 1716: A new Milky Way Globular Cluster confirmed using VVV RR Lyrae stars
- Characterization of the VVV Survey RR Lyrae Population across the Southern Galactic Plane
- Using Gaia DR2 to detect extratidal structures around the Galactic globular cluster NGC362
- Deep Hubble Space Telescope Imaging of Globular Clusters Towards the Galactic Bulge: Observations, Data Reduction and Color-Magnitude Diagrams
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- Gaia DR2 orbital properties for field stars with globular cluster-like CN band strengths
- Three New Galactic Globular Cluster Candidates: FSR1700, Teutsch67, and CWNU4193
- Variable stars in the VVV globular clusters. II. NGC6441, NGC6569, NGC6626 (M28), NGC6656 (M22), 2MASS-GC02, and Terzan10
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