Free Access

Table 1.

Description of the Gaia DR2-based catalogue of 237 strongly magnetic Ap stars with resolved magnetically split lines.

Bytes Format Units Label Explanations Ref
001-024 A24 Object name (SIMBAD) name of Ap star, typically HD...or 2MASS... 1, 2
026-053 A28 DR2NAME Unique Gaia source designation 3
055-064 F10.4 mas Plx Gaia DR2 parallax 3
066-072 F6.4 mas e_Plx Error of Gaia DR2 parallax 3
074-083 F10.4 RPlx Gaia DR2 parallax divided by its error 3
085-093 F9.3 mas yr−1 pmRA Gaia DR2 proper motion component in right ascension direction (μα cos δ) 3
095-100 F5.3 mas yr−1 e_pmRA Error of pmRA 3
102-110 F9.3 mas yr−1 pmDE Gaia DR2 proper motion component in declination direction (μδ) 3
112-117 F5.3 mas yr−1 e_pmDE Error of pmDE 3
119-120 I2 Np Gaia DR2 Nper = visibility_periods_used 3
122-128 F7.4 mag G Gaia DR2 G magnitude 3
130-136 F7.4 mag BP Gaia DR2 BP magnitude 3
138-144 f7.4 mag BP − RP Gaia DR2 BP − RP colour 3
146-153 F8.4 u Gaia DR2 astrometric unit weight error 3, 4, 11
155-162 F8.3 RUWE Renormalised unit weight error (newly calibrated u) 3, 4, 5, 11
164-169 F6.4 va_G Variability amplitude in Gaia DR2 G band 3, 6, 7, 11
171-176 F6.4 va_B Variability amplitude in Gaia DR2 BP band 3, 11
178-183 F6.4 va_R Variability amplitude in Gaia DR2 RP band 3, 11
185-190 f6.2 vaGs Significance of va_G (number of standard deviations σ above the typical level of non-variable stars) 3, 11
192-197 f6.2 vaBs Significance of va_B (number of standard deviations σ above the typical level of non-variable stars) 3, 11
199-204 f6.2 vaRs Significance of va_R (number of standard deviations σ above the typical level of non-variable stars) 3, 11
206-212 F7.2 K Teff Stellar effective temperature 3, 8
214-220 F7.2 K b_Teff Uncertainty (lower) on Teff estimate 3, 8
222-228 F7.2 K B_Teff Uncertainty (upper) on Teff estimate 3, 8
230-238 F9.3 Solar Lum Lum Estimated luminosity 3, 8
240-246 f7.4 mag MG Absolute G magnitude computed as MG = G + 5log(Plx/100) 3, 11
248-249 I2 wf Wide binary (common parallax and proper motion = CPPM) flag (number of CPPM companions) 3, 11
251-252 I2 bf Close (with respect to Gaia measurements) binary flag (0 = not known as binary) 1
254-255 I2 cf Cluster membership flag (number of clusters of which the star is a member) 3, 9, 11
257-258 I2 af Astrometric quality flag (number of criteria by which star was excluded, 0 = best, 4 = worst) 3, 5, 11
260-261 I2 vf Variability flag (number of photometric bands, where the star lies > 3σ above the typical variability amplitude) 3, 11
263-268 I6 Hip HIPPARCOS identifier 10
270-270 A1 N Note in first version of HIPPARCOS catalogue, here: P = note on photometry 10
274-275 I2 Sn Solution type new reduction, 5 = 5-parameter, 7 = 7-parameter solution, > 9 = double star with peculiarities 10
277-278 I2 So Solution type old reduction, 0 = 5-parameter, 1 = 7- or 9-parameter, 3 = double/multiple stars, 4 = orbital binary 10
280-281 I2 Nc Number of components according to HIPPARCOS 10
286-290 F5.2 mas HPlx HIPPARCOS parallax (new reduction) 10
293-297 F5.2 mas eHPlx Error of HIPPARCOS parallax (new reduction) 10
299-302 I4 Ntr Number of HIPPARCOS field transits used 10
304-309 f6.2 F2 HIPPARCOS goodness of fit 10
311-313 I3 F1 Percentage of rejected HIPPARCOS data 10
316-322 F7.4 mag HPmag HIPPARCOS magnitude (in the optical V band of the HIPPARCOS photometric system) 10
324-330 f7.3 mag B − V HIPPARCOSB − V colour index (in the non-conventional system) 10
332-338 f7.3 mag V − I HIPPARCOSV − I colour index (no standard system specified) 10

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.