## Abstract The first supersoft source (SSS) identification with an optical nova in M 31 was based on ROSAT observations. Twenty additional Xβray counterparts (mostly identified as SSS by their hardness ratios) were detected using archival ROSAT, XMMβNewton and Chandra observations obtained before
Optical spectroscopy of novae in M 31
β Scribed by F. Di Mille; M. Orio; S. Ciroi; A. Bianchini; P. Rafanelli; T. Nelson
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 264 KB
- Volume
- 331
- Category
- Article
- ISSN
- 0004-6337
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β¦ Synopsis
Abstract
We report results of a spectrophotometric survey of novae in M 31. The observations were carried out using the TNG at La Palma and the 1.82 m telescope of the INAF/OAPD at Asiago observatory. Low resolution spectra of the novae, obtained mainly in the early decline phase, allow us to classify the objects following the Tololo scheme (Williams 1992) (Β© 2010 WILEYβVCH Verlag GmbH & Co. KGaA, Weinheim)
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Infrared and Raman spectroscopy allow direct spectral analysis of the solid-phase, thus avoiding the tedious cleavage of compounds from the solid support. With diagnostic bands in starting materials or products, infrared and Raman spectroscopy are efficient in monitoring each reaction step directly