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Issue A&A
Volume 382, Number 3, February II 2002
Page(s) 1005 - 1008
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20011667



A&A 382, 1005-1008 (2002)
DOI: 10.1051/0004-6361:20011667

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

A. Pasquali1 and F. Comerón2

1  ESO/ST-ECF, Karl-Schwarzschild-Strasse 2, 85748 Garching bei Muenchen, Germany
    e-mail: apasqual@eso.org
2  ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching bei Muenchen, Germany
    e-mail: fcomeron@eso.org

(Received 11 October 2001 / Accepted 16 November 2001)

Abstract
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 $\simeq$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. 2001) confirm the LBV nature of IRAS 18576+0341.


Key words: stars: emission line, circumstellar matter, outflows

Offprint request: A. Pasquali, apasqual@eso.org

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© ESO 2002


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