SIMBAD references

2016ApJ...830...11V - Astrophys. J., 830, 11-11 (2016/October-2)

The intermediate luminosity optical transient SN 2010da: the progenitor, eruption, and aftermath of a peculiar supergiant high-mass X-ray binary.

VILLAR V.A., BERGER E., CHORNOCK R., MARGUTTI R., LASKAR T., BROWN P.J., BLANCHARD P.K., CZEKALA I., LUNNAN R. and REYNOLDS M.T.

Abstract (from CDS):

We present optical spectroscopy, ultraviolet-to-infrared imaging, and X-ray observations of the intermediate luminosity optical transient (ILOT) SN 2010da in NGC 300 (d=1.86 Mpc) spanning from -6 to +6 years relative to the time of outburst in 2010. Based on the light-curve and multi-epoch spectral energy distributions of SN 2010da, we conclude that the progenitor of SN 2010da is a ≃10-12 M yellow supergiant possibly transitioning into a blue-loop phase. During outburst, SN 2010da had a peak absolute magnitude of Mbol <= -10.4 mag, dimmer than other ILOTs and supernova impostors. We detect multi-component hydrogen Balmer, Paschen, and Ca ii emission lines in our high-resolution spectra, which indicate a dusty and complex circumstellar environment. Since the 2010 eruption, the star has brightened by a factor of ≃5 and remains highly variable in the optical. Furthermore, we detect SN 2010da in archival Swift and Chandra observations as an ultraluminous X-ray source (LX ≃ 6 x 1039 erg/s). We additionally attribute He ii 4686 Å and coronal Fe emission lines in addition to a steady X-ray luminosity of ≃1037 erg/s to the presence of a compact companion.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: mass-loss - supernovae: individual: SN 2010da - X-rays: binaries - X-rays: binaries

Simbad objects: 21

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2021.01.28-15:22:19

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