IRAS 18576+0341: A new addition to the class of Galactic Luminous Blue Variables

Details IRAS 18576+0341: A new addition to the class of Galactic Luminous Blue Variables IRAS 18576+0341: A new addition to the class of Galactic Luminous Blue Variables

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...382.1005p&link_type=abstract

Astronomy and Astrophysics, v.382, p.1005-1008 (2002)

Astronomy and Astrophysics

Astrophysics

9

Stars: Emission Line, Circumstellar Matter, Outflows

Scientific paper

We present JHK photometry and low-resolution HK spectroscopy of IRAS 18576+0341, a galactic Luminous Blue Variable (LBV) candidate. The star is heavily reddened with observed magnitudes J = 13.21, H = 9.88 and K = 8.06. These values and previously published photometry define a lightcurve with an amplitude of =~ 1.4 mag between 1999 June and 2001 August, quite compatible with what is observed for well-studied LBVs, i.e. AG Carinae and HR Carinae. The spectrum of IRAS 18576+0341 is characterised by prominent H, He and Fe emissions, which are recurrent features in the spectra of well known LBVs such as He 3-519. These findings together with the recent detection of an associated circumstellar nebula (Ueta et al. \cite{Uet01}) confirm the LBV nature of IRAS 18576+0341.

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