Table information for 'pn_spec_res_table.main'

General

This table is available for ADQL queries and through the TAP endpoint.

Resource Description:

This resource provides a compiled dataset of Galactic planetary nebulae derived from absolute optical spectroscopy and supplemented by selected values from the literature. Based on these data, fundamental physical parameters were calculated, including sizes, densities, electron temperatures, and central star characteristics.

The table includes:

Each measurement is provided in a machine-readable format, separating values, uncertainties, and exponents into dedicated columns. This ensures precise numerical handling and interoperability with Virtual Observatory services and pipelines.

For a list of all services and tables belonging to this table's resource, see Information on resource 'Planetary Nebulae: results of abs spectroscopy'

Resource Reference URL: Resource info

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2025Ap.....68...51K (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:pn_spec_res_tabl,
  year=2025,
  title={Planetary Nebulae: results of abs spectroscopy},
  author={L.N. Kondratyeva, E.K. Denissyuk, S.A. Shomshekova, I.V. Reva, A.K.
Aimanova, M.A. Krugov},
  url={https://dachs.fai.kz/tableinfo/pn_spec_res_table.main},
  howpublished={{VO} resource provided by the {FAI} archives}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
object Object Primary identifier of the planetary nebula. N/A meta.id;src
alt_name AltName Alternative name of the object. N/A meta.id;src
excitation_class ExcClass Excitation class of the nebula, typically 'low' or 'high'. N/A phys.atmol.ionStage
extinction_C_Hbeta C(H_beta) Logarithmic extinction at Hβ. N/A phys.absorption.gal
Diam_arcsec Diam″ Angular diameter (2*radius) of the nebula in arcseconds. Zero means stellar like object. arcsec phys.angSize;stat.min
Diam_sign DiamQual Qualifier for the physical radius: limit ('>', '<') or blank. N/A meta.code.qual
Diam_pc Diam_pc Physical radius (2*radius) of the nebula in parsecs. pc phys.size.radius
Dist_kpc Dist Distance to the planetary nebula in kiloparsecs. kpc pos.distance;src
Ne_SII Ne_[SII] Electron density derived from the [SII] 6717/6731 line ratio. cm**-3 phys.density.electron
Ne_SII_err Ne_[SII]_err Uncertainty in electron density from [SII] lines. cm**-3 stat.error;phys.density.electron
Ne_SII_power Ne_[SII]_power Power of 10 to apply to Ne_[SII] value (i.e., Ne × 10^power). N/A arith.factor
T_HI T_HI Effective temperature of the central star derived using the Zanstra method (based on H I Balmer discontinuity). K phys.temperature.effective
T_HI_err T_HI_err Uncertainty in effective temperature T_HI. K stat.error;phys.temperature.effective
T_HI_power T_HI_pow Power of 10 to apply to T_HI value. N/A arith.factor
T0_OIII T0_[OIII] Effective temperature of the central star at the beginning of observations, derived using the empirical method based on [O III] lines. K phys.temperature.effective
T0_OIII_err T0_[OIII]_err Uncertainty in the effective temperature T0_[OIII]. K stat.error;phys.temperature.effective
T0_OIII_power T0_pow Power of 10 to apply to T0_[OIII] value. N/A arith.factor
T1_OIII T1_[OIII] Effective temperature of the central star at the end of observations, derived using the empirical method based on [O III] lines. K phys.temperature.effective
T1_OIII_err T1_[OIII]_err Uncertainty in the effective temperature T1_[OIII]. K stat.error;phys.temperature.effective
T1_OIII_power T1_[OIII_]pow Power of 10 to apply to T1_[OIII] value. N/A arith.factor
delta_t_obs_year dt_obs Time span in years between the first and last spectroscopic observations used in the analysis. yr time.duration;obs
delta_t_model_year dt_model Time interval in the photoionization model over which the observed variations are reproduced. yr time.duration;model
model_num Model Number of model from doi:10.1051/0004-6361/201526577. N/A meta.code;model
mass_prog_star M_prog Initial mass of the progenitor star in solar masses according to the selected model. solMass phys.mass;star
age_year Age Estimated age of the planetary nebula. yr time.age
obs_year Obs_year1 Year of observation. If there is the second year, then the column means 'from' the year yr time.epoch
obs_year_2 Obs_year2 Ending year of observation (if applicable). It means 'to' the year. yr time.epoch
obs_month Obs_month1 Month of first observation (if known). If there is the second month, then the column means 'from' the month N/A time.epoch
obs_month_2 Obs_month2 Ending month of observation (if applicable). It means 'to' the month N/A time.epoch
obs_day Obs_day Day of observation (if known). N/A time.epoch
F_H_beta F(H_beta) Observed H_beta flux in erg cm⁻² s⁻¹. erg cm**-2 s**-1 phot.flux;em.line.Hbeta
F_H_beta_err F(H_beta)_err Uncertainty in the observed H_beta flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.Hbeta
F_H_beta_power F(H_beta)_pow Power of 10 to apply to the Hβ flux (F × 10^power). N/A arith.factor
HeII_4685 HeII_4685 Observed flux of the He II 4685 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.HeII
HeII_4685_err HeII_4685_err Uncertainty in the He II 4685 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.HeII
OIII_5007 [OIII]_5007 Observed flux of the [O III] 5007 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.OIII
OIII_5007_err [OIII]_5007_err Uncertainty in the [O III] 5007 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.OIII
H_alpha_6563 H_alpha Observed flux of the Hα 6563 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.Halpha
H_alpha_6563_err H_alpha_err Uncertainty in the H_alpha 6563 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.Halpha
NII_6583 [NII]_6583 Observed flux of the [N II] 6583 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.NII
NII_6583_err [NII]_6583_err Uncertainty in the [N II] 6583 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.NII
HeI_6678 HeI_6678 Observed flux of the He I 6678 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.HeI
HeI_6678_err HeI_6678_err Uncertainty in the He I 6678 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.HeI
SII_6717 [SII]_6717 Observed flux of the [S II] 6717 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.SII
SII_6717_err [SII]_6717_err Uncertainty in the [S II] 6717 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.SII
SII_6731 [SII]_6731 Observed flux of the [S II] 6731 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.SII
SII_6731_err [SII]_6731_err Uncertainty in the [S II] 6731 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.SII
HeI_7065 HeI_7065 Observed flux of the He I 7065 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.HeI
HeI_7065_err HeI_7065_err Uncertainty in the He I 7065 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.HeI
ArIII_7136 [ArIII]_7136 Observed flux of the [Ar III] 7136 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.ArIII
ArIII_7136_err [ArIII]_7136_err Uncertainty in the [Ar III] 7136 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.ArIII
OI_7324 [OI]_7324 Observed flux of the [O I] 7324 Angstrom line. erg cm**-2 s**-1 phot.flux;em.line.OI
OI_7324_err [OI]_7324_err Uncertainty in the [O I] 7324 Angstrom flux. erg cm**-2 s**-1 stat.error;phot.flux;em.line.OI
spec_ref Ref Reference code for spectroscopic data source. Only provided for Hβ and related absolute line fluxes. N/A meta.bib.bibcode

Columns that are parts of indices are marked like this.

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