VOSA: Virtual Observatory SED Analyzer. An application to the Collinder 69 open cluster

Abstract

The physical properties of almost any kind of astronomical object can be derived by fitting synthetic spectra or photometry extracted from theoretical models to observational data. We want to develop an automatic procedure to perform this kind of fittings to a relatively large sample of members of a stellar association and apply this methodology to the case of Collinder 69. We combine the multiwavelength data of our sources and follow a work-flow to derive the physical parameters of the sources. The key step of the work-flow is performed by a new VO-tool, VOSA. All the steps in this process are done in a VO environment. We present this new tool, and provide physical parameters such as T${}_{\mathrm{eff}}$, gravity, luminosity, etc. for $\sim$170 candidate members to Collinder 69, and an upper-limit for the age of this stellar association. This kind of studies of star forming regions, clusters, etc. produces a huge amount of data, very tedious to analyse using the traditional methodology. Thus, they are excellent examples where to apply the VO capabilities.

Accepted for publication in A&A

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• The miniJPAS survey: stellar atmospheric parameters from 56 optical filters
• K2 Targets Observed with SPHERE/VLT: An M4-7 Dwarf Companion Resolved around EPIC 206011496
• New Symbiotic Stars from LAMOST DR10 Spectra and Multi-band Photometry
• Rare Find: Discovery and chemo-dynamical properties of two s-process enhanced RR Lyrae stars
• ExoplaNeT accRetion mOnitoring sPectroscopic surveY (ENTROPY) - II. Time series of Balmer line profiles of Delorme 1(AB)b
• Detection of wide binary and multiple nuclei of planetary nebulae using the Gaia DR3
• PM 1-322: new variable planetary nebula
• A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity
• Searching for debris discs in the 30 Myr open cluster IC 4665
• Walking the Line: Young Stars on the Boundary of the Epsilon Cha and Lower Centaurus-Crux Associations
• Analysis of KIC 7023917 -- spotted low-mass ratio eclipsing binary with $\delta$ Scuti pulsations
• First X-ray dectection of the young variable V1180 Cas
• Searching for lambda Boo stars in binary systems
• Study of UV bright sources in globular cluster NGC 4590 using Ultraviolet Imaging Telescope (UVIT) observations
• Discovery of pulsating components in eclipsing binary systems through the TESS light curves: The cases of CPD-30 740, HD 97329, V1637 Ori and TYC 683-640-1
• K2 Discovery of a Circumsecondary Disk Transiting EPIC 220208795
• Stellar populations of the globular cluster NGC 5053 investigated using AstroSat-Ultra Violet Imaging Telescope
• Photometric analysis of three totally eclipsing W UMa stars with increasing periods: TYC 3700-1384-1, V1511 Her and V1179 Her
• AstroSat/UVIT Study of NGC 663: First detection of Be+sdOB systems in a young star cluster
• A search for peculiar stars in the open cluster Hogg 16
• The Gran Telescopio Canarias OSIRIS Broad Band First Data Release
• Discovery of new magnetic δ Scuti stars and impact of magnetism on pulsation excitation
• A photometric and spectroscopic study of eight semi-detached eclipsing binaries
• UVIT-HST-Gaia-VISTA study of KRON 3 in the Small Magellanic Cloud: A cluster with an extended red clump in UV
• K2 Observations of 95 Vir: delta Scuti Pulsations in a Chromospherically Active Star
• Detection of hot subdwarf binaries and sdB stars using machine learning methods and a large sample of Gaia XP spectra
• K2-399 b is not a planet. The Saturn that wandered through the Neptune desert is actually a hierarchical eclipsing binary
• On the age of the magnetically active WW Psa and TX Psa members of the beta Pictoris association
• Chemically peculiar stars on the pre-main sequence
• Unequivocal detection of the tidal deformation of a red giant in a binary system via interferometry
• Cloud structure and young star distribution in the Dragonfish complex
• TYC 3637-1152-1 - a High Amplitude delta Scuti star with peculiar pulsational properties
• Photometric and Spectroscopic Study of Two Low Mass Ratio Contact Binary Systems: CRTS J225828.7-121122 and CRTS J030053.5+230139
• Full abundance study of two newly discovered barium giants
• M-dwarf stars in the b294 field from the VISTA Variables in the Vía Láctea (VVV)
• Globular Cluster UVIT Legacy Survey (GlobULeS) $-$ II. Evolutionary status of hot stars in M3 and M13
• Discovery of an optical cocoon tail behind the runaway HD 185806
• Characterisation of the eclipsing post-common-envelope binary TIC 60040774
• Discovery of $\delta$ Sct Components in Eclipsing Binary Systems IQ CMa, AW Men and W Vol
• Study of Classical Be stars in open clusters older than 100 Myr
• Exploring the habitability and interior composition of exoplanets lying within the extended habitable zone
• First direct detection of an RR Lyrae star conclusively associated with an intermediate-age cluster
• Gaia white dwarfs with infrared excess I. The 100 pc catalogue
• MG1-688432: A Peculiar Variable System
• CaII and H$\alpha$ flaring M dwarfs detected with multi-filter photometry
• A transiting rocky super-Earth and a non-transiting sub-Neptune orbiting the M dwarf TOI-771
• A pilot method to determine the high mass end of the Stellar Initial Mass Function in galaxies using UVIT, H$\alpha$-MUSE observations and applied to NGC628
• Infrared colours and bolometric corrections of SiO masing stars in the inner Milky Way
• The nature of ASASSN-24fw's occultation: modelling the event as dimming by optically thick rings around a sub-stellar companion
• Debris disks among Kepler solar rotational analog stars
• eROSITA-selection of new period-bounce Cataclysmic Variables: First follow-up confirmation using TESS and SDSS
• Confirmation of the hot super-Neptune TOI-672 b with NIRPS and HARPS and Insights into the Neptunian desert around M dwarfs
• Stellar-activity analysis of the nearby M dwarf GJ 526. Multi-dimensional Gaussian-process modelling of RV, FWHM and S-index
• TOI-4552 b: A new ultra-short period rocky world revealed by NIRPS and TESS
• Revisiting G29.862-0.0044: a jet cavity disrupted by an outflow in a likely young stellar object wide binary system
• Fundamental parameters of the eclipsing binary DD CMa and evidence for mass exchange
• Discovery of lambda Boo stars in open clusters
• The Gaia Catalogue of Galactic AGB Stars
• Dippers from TESS Full-frame Images. II. Spectroscopic Characterization of Four Young Dippers
• A Sequoia stellar candidate with very high 7Li and 9Be
• On the detectability and parameterisation of binary stars through spectral energy distributions
• Discovery of a hot post-AGB star in Galactic globular cluster E3
• EPIC 206197016: A very hot white dwarf orbited by a strongly irradiated red dwarf
• A Kepler K2 view of subdwarf A-type stars
• Classical Be Stars and Classical Be Star Binaries from LAMOST DR12
• L-band Integral Field Spectroscopy of the HR 8799 Planetary System
• A case study of ACV variables discovered in the Zwicky Transient Facility survey
• Four New Eclipsing Binary Systems in the TESS field: CD-34 13220, HD 295082, TYC 6484-426-1 and TYC 6527-2310-1
• Metallicities in M dwarfs: Investigating different determination techniques
• Are there really some eccentric eclipsing binaries having orbital periods below 1 d?
• A Multiband Catalog of Infrared-Excess Sources in the Vela-Carina Region: VVVX, DECaPS, and GLIMPSE
• Comprehensive analysis of a symbiotic candidate V503 Her
• Toward the Analysis of JWST Exoplanet Spectra: the effective temperature in the context of direct imaging
• ExoplANETS-A: A VO database for host stars and planetary systems: The effect of XUV on planet atmospheres
• Study of the open cluster Alessi-Teutsch 9 (ASCC 10) using multiband photometry and Gaia EDR3
• Dynamic Photometric Variability in Three Young Brown Dwarfs in Taurus: Detection of Optical Flares with TESS data
• X-ray and Optical Analysis of the Prototype Polar AN UMa
• HD 44892: The youngest (or oldest?) gas-harbouring debris disc around an intermediate mass star
• Astrophotometric search for massive stars in the Milky way. Confronting Random Forest predictions with available spectroscopy
• MINDS: The very low-mass star and brown dwarf sample II. Probing disk settling, dust properties, and dust-gas interplay with JWST/MIRI
• Decoding the RVb Enigma of DF Cyg: Pulsations, Circumstellar Disks, and Post-RGB Evolution Revealed by Multi-Wavelength Observations
• Follow-up of three exocomet-host candidates
• Discovery and Characterization of White Dwarf-FGK Main-Sequence Binaries within the Optical Main-Sequence Locus
• High-precision K2/TESS Photometry and HERMES Spectroscopy of Four Bright Field Stars
• Direct detections of white dwarfs in four WD+dM post-common envelope binaries within 20 pc
• Infrared-excess sources in VVV: candidate debris discs, SED characterization, and variability analysis
• An analysis of four stellar rings
• WISE J005128.08+645651.7: An enigmatic R Coronae Borealis star
• A machine learning approach to estimate mid-infrared fluxes from WISE data
• A search for Galactic post-asymptotic giant branch stars in Gaia DR3
• The Nearest, Brightest Debris Disk Host Stars: Updated Photosphere Models and Dust Properties for Stars with Saturated 2MASS Photometry
• Six Newly Discovered Eclipsing Binary Systems in the TESS field
• The Calar Alto CAFOS Direct Imaging First Data Release
• A spatially-resolved large cavity of the J0337 protoplanetary disk in Perseus
• A multi-wavelength view of the open cluster NGC 2527: Discovery of active stars