Pith. sign in

REVIEW

Total eclipse of the heart: The AM CVn Gaia14aae / ASSASN-14cn

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1507.04663 v1 pith:KI2QW6NR submitted 2015-07-16 astro-ph.SR

Total eclipse of the heart: The AM CVn Gaia14aae / ASSASN-14cn

H. C. Campbell , T. R. Marsh , M. Fraser , S.T. Hodgkin , E. de Miguel , B. T. G\"ansicke , D. Steeghs , A. Hourihane
show 77 more authors
E. Breedt S. P. Littlefair S. E. Koposov L. Wyrzykowski G. Altavilla N. Blagorodnova G. Clementini G. Damljanovic A. Delgado M. Dennefeld A. J. Drake J. Fern\'andez-Hern\'andez G. Gilmore R. Gualandi A. Hamanowicz B. Handzlik L. K. Hardy D. L. Harrison K. Ilkiewicz P. G. Jonker C. S. Kochanek Z. Kolaczkowski Z. Kostrzewa-Rutkowska R. Kotak G. van Leeuwen G. Leto P. Ochner M. Pawlak L. Palaversa G. Rixon K. Rybicki B. J. Shappee S. J. Smartt M. A. P. Torres L. Tomasella M. Turatto K. Ulaczyk S. van Velzen O. Vince N. A. Walton P. Wielg\'orski T. Wevers P. Whitelock A. Yoldas F. De Angeli P. Burgess G. Busso R. Busuttil T. Butterley K. C. Chambers C. Copperwheat A. B. Danilet V. S. Dhillon D. W. Evans L. Eyer D. Froebrich A. Gomboc G. Holland T. W.-S. Holoien J. F. Jarvis N. Kaiser D. A. Kann D. Koester U. Kolb S. Komossa E. A. Magnier A. Mahabal J. Polshaw J. L. Prieto T. Prusti M. Riello A. Scholz G. Simonian K. Z. Stanek L. Szabados C. Waters R. W. Wilson
This is my paper
classification astro-ph.SR
keywords gaia14aaeasas-sneventsorbitaloutburstperiodaccretingaccretor
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
0 comments
read the original abstract

We report the discovery and characterisation of a deeply eclipsing AM CVn-system, Gaia14aae (= ASSASN-14cn). Gaia14aae was identified independently by the All-Sky Automated Survey for Supernovae (ASAS-SN; Shappee et al. 2014) and by the Gaia Science Alerts project, during two separate outbursts. A third outburst is seen in archival Pan-STARRS-1 (PS1; Schlafly et al. 2012; Tonry et al. 2012; Magnier et al. 2013) and ASAS-SN data. Spectroscopy reveals a hot, hydrogen-deficient spectrum with clear double-peaked emission lines, consistent with an accreting double degenerate classification. We use follow-up photometry to constrain the orbital parameters of the system. We find an orbital period of 49.71 min, which places Gaia14aae at the long period extremum of the outbursting AM CVn period distribution. Gaia14aae is dominated by the light from its accreting white dwarf. Assuming an orbital inclination of 90 degrees for the binary system, the contact phases of the white dwarf lead to lower limits of 0.78 M solar and 0.015 M solar on the masses of the accretor and donor respectively and a lower limit on the mass ratio of 0.019. Gaia14aae is only the third eclipsing AM CVn star known, and the first in which the WD is totally eclipsed. Using a helium WD model, we estimate the accretor's effective temperature to be 12900+-200 K. The three out-burst events occurred within 4 months of each other, while no other outburst activity is seen in the previous 8 years of Catalina Real-time Transient Survey (CRTS; Drake et al. 2009), Pan-STARRS-1 and ASAS-SN data. This suggests that these events might be rebrightenings of the first outburst rather than individual events.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.