Information on Service 'Photometric and Spectral Data of Galactic Wolf-Rayet Stars (WN sequence)'

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This catalogue contains results of photometric and spectral observations of eleven Galactic Wolf–Rayet stars of the WN sequence, obtained in 2021–2022 at the Fesenkov Astrophysical Institute (FAI), Kazakhstan.

The observing programme included moderately bright stars (mostly fainter than V = 10m) observed in B, V, and Rc photometric filters, as well as medium-resolution spectra for measurement of absolute fluxes in prominent emission lines.

For each object, the table provides:
  • identifiers (WR catalogue number, alternative name),
  • spectral subtype,
  • equatorial coordinates (J2000),
  • literature photometry (B_cat, V_cat) and reference codes,
  • date of observation and Julian Date (JD−2400000),
  • measured B, V, Rc magnitudes with their errors,
  • and absolute fluxes and equivalent widths for a set of emission lines, including
    He II λ4540, N III λ4619, He II λ4685, He II + H I λ4859, N V λ4945, He II λ5411, He II λ6560, He II λ6583, and N IV λ7109.

These data were first published in the paper “Photometric and Spectral Studies of a Group of Galactic Wolf–Rayet Stars. I. WN Sequence”, Astrophysics, Vol. 66, No. 4 (November 2023), by L.N. Kondratyeva, I.V. Reva, E.K. Denisyuk, S.A. Shomshekova, A.K. Aimanova. DOI: 10.54503/0002-3051-2023.76.4-521

For a list of all services and tables belonging to this service's resource, see Information on resource 'Photometric and Spectral Data of Galactic Wolf-Rayet Stars (WN sequence)'

Overview

You can access this service using:

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry.

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
B_mag B Measured B magnitude from observations. mag phot.mag;em.opt.B
date_obs Obs. date UTC date of the observation. N/A time.epoch
name Name Search by object name or alternative name. N/A meta.id;src
Rc_mag Rc Measured Cousins R magnitude from observations. mag phot.mag;em.opt.R
sp Sp Filter by spectral subtype (e.g., WN4, WN7). N/A src.spType
V_mag V Measured V magnitude from observations. mag phot.mag;em.opt.V

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

NameTable Head DescriptionUnitUCD
alt_name Alt. name Alternative identifier of the star (e.g., HD, BD number). N/A meta.id;src
B_cat B_cat Catalogue B magnitude from literature. mag phot.mag;em.opt.B
B_mag B Measured B magnitude from observations. mag phot.mag;em.opt.B
B_mag_err e_B Uncertainty in the measured B magnitude. mag stat.error;phot.mag;em.opt.B
CII_5801_5811_EW EW(CII 5801–5811) Equivalent width of C II λ5801–5811 blend. Angstrom spect.line.eqWidth
CII_5801_5811_Fabs F(CII 5801–5811) Absolute flux of C II λ5801–5811 blend. W.m**-2 phot.flux;em.line
date_obs Obs. date UTC date of the observation. N/A time.epoch
dec Dec(J2000) Declination (J2000) of the star in decimal degrees. deg pos.eq.dec;meta.main
HeI_7065_EW EW(HeI 7065) Equivalent width of He I λ7065 emission line. Angstrom spect.line.eqWidth
HeI_7065_Fabs F(HeI 7065) Absolute flux of He I λ7065 emission line. W.m**-2 phot.flux;em.line
HeII_4514_4540_EW EW(HeII 4514–4540) Equivalent width of He II λ4514–4540 blend. Angstrom spect.line.eqWidth
HeII_4514_4540_Fabs F(HeII 4514–4540) Absolute flux of He II λ4514–4540 blend. W.m**-2 phot.flux;em.line
HeII_4540_EW EW(HeII 4540) Equivalent width of He II λ4540 emission line. Angstrom spect.line.eqWidth
HeII_4540_Fabs F(HeII 4540) Absolute flux of He II λ4540 emission line. W.m**-2 phot.flux;em.line
HeII_4685_EW EW(HeII 4685) Equivalent width of He II λ4685 emission line. Angstrom spect.line.eqWidth
HeII_4685_Fabs F(HeII 4685) Absolute flux of He II λ4685 emission line. W.m**-2 phot.flux;em.line
HeII_4686_EW EW(HeII 4686) Equivalent width of He II λ4686 emission line. Angstrom spect.line.eqWidth
HeII_4686_Fabs F(HeII 4686) Absolute flux of He II λ4686 emission line. W.m**-2 phot.flux;em.line
HeII_4859_EW EW(HeII 4859) Equivalent width of He II λ4859 emission line. Angstrom spect.line.eqWidth
HeII_4859_Fabs F(HeII 4859) Absolute flux of He II λ4859 emission line. W.m**-2 phot.flux;em.line
HeII_5411_EW EW(HeII 5411) Equivalent width of He II λ5411 emission line. Angstrom spect.line.eqWidth
HeII_5411_Fabs F(HeII 5411) Absolute flux of He II λ5411 emission line. W.m**-2 phot.flux;em.line
HeII_6560_EW EW(HeII 6560) Equivalent width of He II λ6560 emission line. Angstrom spect.line.eqWidth
HeII_6560_Fabs F(HeII 6560) Absolute flux of He II λ6560 emission line. W.m**-2 phot.flux;em.line
HeII_6583_EW EW(HeII 6583) Equivalent width of He II λ6583 emission line. Angstrom spect.line.eqWidth
HeII_6583_Fabs F(HeII 6583) Absolute flux of He II λ6583 emission line. W.m**-2 phot.flux;em.line
HeII_6683_EW EW(HeII 6683) Equivalent width of He II λ6683 emission line. Angstrom spect.line.eqWidth
HeII_6683_Fabs F(HeII 6683) Absolute flux of He II λ6683 emission line. W.m**-2 phot.flux;em.line
HeII_7177_EW EW(HeII 7177) Equivalent width of He II λ7177 emission line. Angstrom spect.line.eqWidth
HeII_7177_Fabs F(HeII 7177) Absolute flux of He II λ7177 emission line. W.m**-2 phot.flux;em.line
HeII_HI_4859_EW EW(HeII+HI 4859) Equivalent width of He II + H I λ4859 blend. Angstrom spect.line.eqWidth
HeII_HI_4859_Fabs F(HeII+HI 4859) Absolute flux of He II + H I λ4859 blend. W.m**-2 phot.flux;em.line
HeII_HI_6560_EW EW(HeII+HI 6560) Equivalent width of He II + H I λ6560 blend. Angstrom spect.line.eqWidth
HeII_HI_6560_Fabs F(HeII+HI 6560) Absolute flux of He II + H I λ6560 blend. W.m**-2 phot.flux;em.line
mag_ref Mag ref Reference code for the catalogue magnitudes. N/A meta.bib
NIII_4514_EW EW(NIII 4514) Equivalent width of N III λ4514 emission line. Angstrom spect.line.eqWidth
NIII_4514_Fabs F(NIII 4514) Absolute flux of N III λ4514 emission line. W.m**-2 phot.flux;em.line
NIII_4619_EW EW(NIII 4619) Equivalent width of N III λ4619 emission line. Angstrom spect.line.eqWidth
NIII_4619_Fabs F(NIII 4619) Absolute flux of N III λ4619 emission line. W.m**-2 phot.flux;em.line
NIII_4634_4640_EW EW(NIII 4634–4640) Equivalent width of N III λ4634–4640 blend. Angstrom spect.line.eqWidth
NIII_4634_4640_Fabs F(NIII 4634–4640) Absolute flux of N III λ4634–4640 blend. W.m**-2 phot.flux;em.line
NIII_4640_EW EW(NIII 4640) Equivalent width of N III λ4640 emission line. Angstrom spect.line.eqWidth
NIII_4640_Fabs F(NIII 4640) Absolute flux of N III λ4640 emission line. W.m**-2 phot.flux;em.line
NIV_7109_7122_EW EW(NIV 7109–7122) Equivalent width of N IV λ7109–7122 blend. Angstrom spect.line.eqWidth
NIV_7109_7122_Fabs F(NIV 7109–7122) Absolute flux of N IV λ7109–7122 blend. W.m**-2 phot.flux;em.line
NIV_7109_EW EW(NIV 7109) Equivalent width of N IV λ7109 emission line. Angstrom spect.line.eqWidth
NIV_7109_Fabs F(NIV 7109) Absolute flux of N IV λ7109 emission line. W.m**-2 phot.flux;em.line
NIV_7122_EW EW(NIV 7122) Equivalent width of N IV λ7122 emission line. Angstrom spect.line.eqWidth
NIV_7122_Fabs F(NIV 7122) Absolute flux of N IV λ7122 emission line. W.m**-2 phot.flux;em.line
NIV_7177_EW EW(NIV 7177) Equivalent width of N IV λ7177 emission line. Angstrom spect.line.eqWidth
NIV_7177_Fabs F(NIV 7177) Absolute flux of N IV λ7177 emission line. W.m**-2 phot.flux;em.line
NIV_HeII_7122_7177_EW EW(NIV+HeII 7122–7177) Equivalent width of N IV + He II λ7122–7177 blend. Angstrom spect.line.eqWidth
NIV_HeII_7122_7177_Fabs F(NIV+HeII 7122–7177) Absolute flux of N IV + He II λ7122–7177 blend. W.m**-2 phot.flux;em.line
NV_4620_EW EW(NV 4620) Equivalent width of N V λ4620 emission line. Angstrom spect.line.eqWidth
NV_4620_Fabs F(NV 4620) Absolute flux of N V λ4620 emission line. W.m**-2 phot.flux;em.line
NV_4933_4944_EW EW(NV 4933–4944) Equivalent width of N V λ4933–4944 blend. Angstrom spect.line.eqWidth
NV_4933_4944_Fabs F(NV 4933–4944) Absolute flux of N V λ4933–4944 blend. W.m**-2 phot.flux;em.line
NV_4940_EW EW(NV 4940) Equivalent width of N V λ4940 emission line. Angstrom spect.line.eqWidth
NV_4940_Fabs F(NV 4940) Absolute flux of N V λ4940 emission line. W.m**-2 phot.flux;em.line
NV_4945_EW EW(NV 4945) Equivalent width of N V λ4945 emission line. Angstrom spect.line.eqWidth
NV_4945_Fabs F(NV 4945) Absolute flux of N V λ4945 emission line. W.m**-2 phot.flux;em.line
object Object WR catalogue number of the star. N/A meta.id;src
ra RA(J2000) Right Ascension (J2000) of the star in decimal degrees. deg pos.eq.ra;meta.main
Rc_mag Rc Measured Cousins R magnitude from observations. mag phot.mag;em.opt.R
Rc_mag_err e_Rc Uncertainty in the measured Cousins R magnitude. mag stat.error;phot.mag;em.opt.R
sp Sp. type Spectral type of the star. N/A src.spType
V_cat V_cat Catalogue V magnitude from literature. mag phot.mag;em.opt.V
V_mag V Measured V magnitude from observations. mag phot.mag;em.opt.V
V_mag_err e_V Uncertainty in the measured V magnitude. mag stat.error;phot.mag;em.opt.V

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
object Object WR catalogue number of the star. N/A meta.id;src 1
alt_name Alt. name Alternative identifier of the star (e.g., HD, BD number). N/A meta.id;src 1
sp Sp. type Spectral type of the star. N/A src.spType 1
ra RA(J2000) Right Ascension (J2000) of the star in decimal degrees. deg pos.eq.ra;meta.main 1
dec Dec(J2000) Declination (J2000) of the star in decimal degrees. deg pos.eq.dec;meta.main 1
B_cat B_cat Catalogue B magnitude from literature. mag phot.mag;em.opt.B 1
V_cat V_cat Catalogue V magnitude from literature. mag phot.mag;em.opt.V 1
mag_ref Mag ref Reference code for the catalogue magnitudes. N/A meta.bib 1
date_obs Obs. date UTC date of the observation. N/A time.epoch 1
B_mag B Measured B magnitude from observations. mag phot.mag;em.opt.B 1
B_mag_err e_B Uncertainty in the measured B magnitude. mag stat.error;phot.mag;em.opt.B 1
V_mag V Measured V magnitude from observations. mag phot.mag;em.opt.V 1
V_mag_err e_V Uncertainty in the measured V magnitude. mag stat.error;phot.mag;em.opt.V 1
Rc_mag Rc Measured Cousins R magnitude from observations. mag phot.mag;em.opt.R 1
Rc_mag_err e_Rc Uncertainty in the measured Cousins R magnitude. mag stat.error;phot.mag;em.opt.R 1
NIII_4514_Fabs F(NIII 4514) Absolute flux of N III λ4514 emission line. W.m**-2 phot.flux;em.line 1
NIII_4514_EW EW(NIII 4514) Equivalent width of N III λ4514 emission line. Angstrom spect.line.eqWidth 1
HeII_4514_4540_Fabs F(HeII 4514–4540) Absolute flux of He II λ4514–4540 blend. W.m**-2 phot.flux;em.line 1
HeII_4514_4540_EW EW(HeII 4514–4540) Equivalent width of He II λ4514–4540 blend. Angstrom spect.line.eqWidth 1
HeII_4540_Fabs F(HeII 4540) Absolute flux of He II λ4540 emission line. W.m**-2 phot.flux;em.line 1
HeII_4540_EW EW(HeII 4540) Equivalent width of He II λ4540 emission line. Angstrom spect.line.eqWidth 1
NIII_4619_Fabs F(NIII 4619) Absolute flux of N III λ4619 emission line. W.m**-2 phot.flux;em.line 1
NIII_4619_EW EW(NIII 4619) Equivalent width of N III λ4619 emission line. Angstrom spect.line.eqWidth 1
NV_4620_Fabs F(NV 4620) Absolute flux of N V λ4620 emission line. W.m**-2 phot.flux;em.line 1
NV_4620_EW EW(NV 4620) Equivalent width of N V λ4620 emission line. Angstrom spect.line.eqWidth 1
NIII_4634_4640_Fabs F(NIII 4634–4640) Absolute flux of N III λ4634–4640 blend. W.m**-2 phot.flux;em.line 1
NIII_4634_4640_EW EW(NIII 4634–4640) Equivalent width of N III λ4634–4640 blend. Angstrom spect.line.eqWidth 1
NIII_4640_Fabs F(NIII 4640) Absolute flux of N III λ4640 emission line. W.m**-2 phot.flux;em.line 1
NIII_4640_EW EW(NIII 4640) Equivalent width of N III λ4640 emission line. Angstrom spect.line.eqWidth 1
HeII_4685_Fabs F(HeII 4685) Absolute flux of He II λ4685 emission line. W.m**-2 phot.flux;em.line 1
HeII_4685_EW EW(HeII 4685) Equivalent width of He II λ4685 emission line. Angstrom spect.line.eqWidth 1
HeII_4686_Fabs F(HeII 4686) Absolute flux of He II λ4686 emission line. W.m**-2 phot.flux;em.line 1
HeII_4686_EW EW(HeII 4686) Equivalent width of He II λ4686 emission line. Angstrom spect.line.eqWidth 1
HeII_HI_4859_Fabs F(HeII+HI 4859) Absolute flux of He II + H I λ4859 blend. W.m**-2 phot.flux;em.line 1
HeII_HI_4859_EW EW(HeII+HI 4859) Equivalent width of He II + H I λ4859 blend. Angstrom spect.line.eqWidth 1
HeII_4859_Fabs F(HeII 4859) Absolute flux of He II λ4859 emission line. W.m**-2 phot.flux;em.line 1
HeII_4859_EW EW(HeII 4859) Equivalent width of He II λ4859 emission line. Angstrom spect.line.eqWidth 1
NV_4933_4944_Fabs F(NV 4933–4944) Absolute flux of N V λ4933–4944 blend. W.m**-2 phot.flux;em.line 1
NV_4933_4944_EW EW(NV 4933–4944) Equivalent width of N V λ4933–4944 blend. Angstrom spect.line.eqWidth 1
NV_4940_Fabs F(NV 4940) Absolute flux of N V λ4940 emission line. W.m**-2 phot.flux;em.line 1
NV_4940_EW EW(NV 4940) Equivalent width of N V λ4940 emission line. Angstrom spect.line.eqWidth 1
NV_4945_Fabs F(NV 4945) Absolute flux of N V λ4945 emission line. W.m**-2 phot.flux;em.line 1
NV_4945_EW EW(NV 4945) Equivalent width of N V λ4945 emission line. Angstrom spect.line.eqWidth 1
HeII_5411_Fabs F(HeII 5411) Absolute flux of He II λ5411 emission line. W.m**-2 phot.flux;em.line 1
HeII_5411_EW EW(HeII 5411) Equivalent width of He II λ5411 emission line. Angstrom spect.line.eqWidth 1
CII_5801_5811_Fabs F(CII 5801–5811) Absolute flux of C II λ5801–5811 blend. W.m**-2 phot.flux;em.line 1
CII_5801_5811_EW EW(CII 5801–5811) Equivalent width of C II λ5801–5811 blend. Angstrom spect.line.eqWidth 1
HeII_HI_6560_Fabs F(HeII+HI 6560) Absolute flux of He II + H I λ6560 blend. W.m**-2 phot.flux;em.line 1
HeII_HI_6560_EW EW(HeII+HI 6560) Equivalent width of He II + H I λ6560 blend. Angstrom spect.line.eqWidth 1
HeII_6560_Fabs F(HeII 6560) Absolute flux of He II λ6560 emission line. W.m**-2 phot.flux;em.line 1
HeII_6560_EW EW(HeII 6560) Equivalent width of He II λ6560 emission line. Angstrom spect.line.eqWidth 1
HeII_6583_Fabs F(HeII 6583) Absolute flux of He II λ6583 emission line. W.m**-2 phot.flux;em.line 1
HeII_6583_EW EW(HeII 6583) Equivalent width of He II λ6583 emission line. Angstrom spect.line.eqWidth 1
HeII_6683_Fabs F(HeII 6683) Absolute flux of He II λ6683 emission line. W.m**-2 phot.flux;em.line 1
HeII_6683_EW EW(HeII 6683) Equivalent width of He II λ6683 emission line. Angstrom spect.line.eqWidth 1
HeI_7065_Fabs F(HeI 7065) Absolute flux of He I λ7065 emission line. W.m**-2 phot.flux;em.line 1
HeI_7065_EW EW(HeI 7065) Equivalent width of He I λ7065 emission line. Angstrom spect.line.eqWidth 1
NIV_7109_Fabs F(NIV 7109) Absolute flux of N IV λ7109 emission line. W.m**-2 phot.flux;em.line 1
NIV_7109_EW EW(NIV 7109) Equivalent width of N IV λ7109 emission line. Angstrom spect.line.eqWidth 1
NIV_7109_7122_Fabs F(NIV 7109–7122) Absolute flux of N IV λ7109–7122 blend. W.m**-2 phot.flux;em.line 1
NIV_7109_7122_EW EW(NIV 7109–7122) Equivalent width of N IV λ7109–7122 blend. Angstrom spect.line.eqWidth 1
NIV_7122_Fabs F(NIV 7122) Absolute flux of N IV λ7122 emission line. W.m**-2 phot.flux;em.line 1
NIV_7122_EW EW(NIV 7122) Equivalent width of N IV λ7122 emission line. Angstrom spect.line.eqWidth 1
NIV_HeII_7122_7177_Fabs F(NIV+HeII 7122–7177) Absolute flux of N IV + He II λ7122–7177 blend. W.m**-2 phot.flux;em.line 1
NIV_HeII_7122_7177_EW EW(NIV+HeII 7122–7177) Equivalent width of N IV + He II λ7122–7177 blend. Angstrom spect.line.eqWidth 1
NIV_7177_Fabs F(NIV 7177) Absolute flux of N IV λ7177 emission line. W.m**-2 phot.flux;em.line 1
NIV_7177_EW EW(NIV 7177) Equivalent width of N IV λ7177 emission line. Angstrom spect.line.eqWidth 1
HeII_7177_Fabs F(HeII 7177) Absolute flux of He II λ7177 emission line. W.m**-2 phot.flux;em.line 1
HeII_7177_EW EW(HeII 7177) Equivalent width of He II λ7177 emission line. Angstrom spect.line.eqWidth 1

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