IRAS 18576+0341: A new addition to the class of Galactic Luminous Blue Variables
ESO/ST-ECF, Karl-Schwarzschild-Strasse 2, 85748 Garching bei Muenchen, Germany e-mail: firstname.lastname@example.org
2 ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching bei Muenchen, Germany e-mail: email@example.com
Corresponding author: A. Pasquali, firstname.lastname@example.org
Accepted: 16 November 2001
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]) confirm the LBV nature of IRAS 18576+0341.
Key words: stars: emission line, circumstellar matter, outflows
© ESO, 2002