The peculiar nova V1309 Scorpii/nova Scorpii 2008

Mason, E.; Diaz, Marcos P.; Williams, Robert E.; Preston, George W.; Bensby, T.

doi:10.1051/0004-6361/200913610

Cited by 116 publications

(174 citation statements)

References 38 publications

Supporting

Mentioning

158

Contrasting

Order By: Relevance

“…The subsequent evolution, however, showed that as pointed out in Mason et al (2010), this was not a typical classical nova.…”

Section: V1309 Scorpiimentioning

confidence: 78%

“…Apart form V838 Mon, in our Galaxy the class also includes V4332 Sgr, whose outburst was observed in 1994 (Martini et al 1999), and V1309 Sco, which erupted in 2008 (Mason et al 2010). As extragalactic eruptions of this kind one can mention M 31 RV (eruption in 1989, Mould et al 1990), M 85 OT2006 (Kulkarni et al 2007), and NGC300 OT2008 (Berger et al 2009).…”

Section: Introductionmentioning

confidence: 90%

“…As described in Mason et al (2010), the object developed a complex and rapidly evolving line spectrum of neutral and singly ionized elements. In early epochs, absorption features dominated the spectrum, emission components developed later and their intensities quickly increased with time.…”

Section: V1309 Scorpiimentioning

confidence: 99%

“…In order to determine the effective temeprature from a colour, an estimate of the interstellar reddening is also necessary. Mason et al (2010) obtained E B−V 0.55 from interstellar lines observed in their spectra of V1309 Sco in outburst. We constrained spectral types of the object in outburst from the UVES spectra of Mason et al (2010) obtained in their epochs 1−3 (downloaded from the VLT archive).…”

Section: A Contact Binary Evolving To Its Mergermentioning

confidence: 99%

“…Mason et al (2010) obtained E B−V 0.55 from interstellar lines observed in their spectra of V1309 Sco in outburst. We constrained spectral types of the object in outburst from the UVES spectra of Mason et al (2010) obtained in their epochs 1−3 (downloaded from the VLT archive). Comparing them with the BVRI photometry of the object obtained by the AAVSO team near the above spectral observations, we obtained 0.7 < ∼ E B−V < ∼ 0.9.…”

Section: A Contact Binary Evolving To Its Mergermentioning

confidence: 99%

See 4 more Smart Citations

V1309 Scorpii: merger of a contact binary

Tylenda

Hajduk

Kamiński

et al. 2011

A&A

440

611

View full text Add to dashboard Cite

Context. Stellar mergers are expected to take place in numerous circumstences in the evolution of stellar systems. In particular, they are considered as a plausible origin of stellar eruptions of the V838 Mon type. V1309 Sco is the most recent eruption of this type in our Galaxy. The object was discovered in September 2008. Aims. Our aim is to investigate the nature of V1309 Sco. Methods. V1309 Sco has been photometrically observed in course of the OGLE project since August 2001. We analyse these observations in different ways. In particular, periodogram analyses were done to investigate the nature of the observed short-term variability of the progenitor. Results. We find that the progenitor of V1309 Sco was a contact binary with an orbital period of ∼1.4 day. This period was decreasing with time. The light curve of the binary was also evolving, indicating that the system evolved towards its merger. The violent phase of the merger, marked by the systematic brightenning of the object, began in March 2008, i.e. half a year before the outburst discovery. We also investigate the observations of V1309 Sco during the outburst and the decline and show that they can be fully accounted for within the merger hypothesis. Conclusions. For the first time in the literature we show from direct observations that contact binaries indeed end up by merging into a single object, as was suggested in numerous theoretical studies of these systems. Our study also shows that stellar mergers indeed result in eruptions of the V838 Mon type.

show abstract

“…The subsequent evolution, however, showed that as pointed out in Mason et al (2010), this was not a typical classical nova.…”

Section: V1309 Scorpiimentioning

confidence: 78%