SIMBAD references

2025MNRAS.541L..14M - Mon. Not. R. Astron. Soc., 541, L14-L21 (2025/July-3)

Is the symbiotic recurrent nova T CrB late? Recent photometric evolution and comparison with past pre-outburst behaviour.

MERC J., WYRZYKOWSKI L., BECK P.G., MIKOLAJCZYK P.J., KOTYSZ K., ZIELINSKI P., ZOLA S., KUROWSKI S., OGLOZA W., DROZDZ M., GALDIES C., HAMBSCH F.-J., BRINCAT S.M., JOACHIMCZYK B., BRONIKOWSKI M., JAPELJ J., MIHELCIC M., CARRASCO J.M., BURGAZ U., GURGUL A., BAKOWSKA K., HOFBAUER P., SZYSZKA K., GOLONKA J., QVAM J.K.T., ZDANAVICIUS J., PAKSTIENE E., MASKOLIUNAS M., CEPAS V., PYLYPENKO U., MOZDZIERSKI D., DUBOIS F., VANAVERBEKE S., OLSZEWSKA J.M., LIAKOS A., STOJANOVIC M., DAMLJANOVIC G., POPOWICZ A., MARZEC M., BADURA M., GIL B., PUCEK A., KOWALSKA A., SZKLARZ M., KVERNADZE T., REGUITTI A., AWIPHAN S., DENNEFELD M. and GAZEAS K.

Abstract (from CDS):

T CrB is a symbiotic recurrent nova that last erupted in 1946. Given its recurrence time-scale of approximately 80 yr, the next outburst is eagerly anticipated by the astronomical community. In this work, we analyse the optical light curves of T CrB, comparing recent photometric evolution with historical data to evaluate potential predictive indicators of nova eruptions. Although the 'superactive' phases preceding both the 1946 and anticipated eruptions are strikingly similar, the subsequent photometric behaviour differs. We find that the decline in brightness observed in 2023, interpreted by some as a 'pre-eruption dip', deviates from the deep minimum recorded prior to the 1946 event and does not reliably predict the eruption timing. Recent photometric and spectroscopic observations indicate that the system is returning to a high-accretion state. Given this, an eruption may be imminent, even without distinct precursors. While the next eruption of T CrB will be a major scientific event, its expected peak brightness of $V \sim 2$ mag highlights the importance of setting realistic public expectations for what will be a visually modest, yet astrophysically very significant, celestial event.

Abstract Copyright: © 2025 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): binaries: symbiotic - stars: individual: T CrB - novae, cataclysmic variables

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 9

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