Galactic novae distances and properties

I derive the overall best distances for all 402 known Galactic novae, and I collect their many properties. The centrepiece is the 74 novae with accurate parallaxes from the new Gaia data release. For the needed priors, I have collected 171 distances based on old methods (including expansion parallaxes and extinction distances). Further, I have collected the V-magnitudes at peak and the extinction measures, so as to produce absolute magnitudes at peak and then derive a crude distance as a prior. Further, I have recognized that 41 per cent of the known novae are concentrated in the bulge, with 68 per cent of these <5.4{deg} from the Galactic Centre, so the 165 bulge novae must have distances of 8000 +/- 750 parsecs. Putting this all together, I have derived distances to all 402 novae, of which 220 have distances to an accuracy of better than 30 per cent. I find that the disc novae have an exponential scale height of 140 +/- 10 pc. The average peak absolute V-magnitude is -7.45, with an RMS scatter of 1.33 mag. These peak luminosities are significantly correlated with the decline rate (t3 in days) as M_V,peak_ = -7.6 + 1.5log (t3/30). The huge scatter about this relation masks the correlation in many smaller data sets, and makes this relation useless for physical models. The bulge novae are indistinguishable from the disc novae in all properties, except that the novae with red giant companion stars have a strong preference for residing in the bulge population.

Cone search capability for table J/MNRAS/517/6150/table1 (Compilation of nova distances from old computational methods)

Cone search capability for table J/MNRAS/517/6150/table3 (Collected V_peak_ and E(B-V) from literature and deduced {mu}peak for our galactic novae)

Cone search capability for table J/MNRAS/517/6150/table4 (Bulge/Disc population identification for {Theta}GC<20{deg} sorted by {Theta}GC)

Cone search capability for table J/MNRAS/517/6150/table5 (Gaia parallaxes and magnitudes of Galactic novae)

Cone search capability for table J/MNRAS/517/6150/table6 (Distances and fundamental properties of all known Galactic novae)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/517/6150
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/517/6150
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/517/6150
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/517/6150
Provenance
Creator Schaefer B.E.
Publisher CDS
Publication Year 2026
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy