Optical spectroscopy of V4641 Sgr

Bibcode
2004ATel..299....1K
Kiss, L.; Meszaros, Sz.
Bibliographical reference

The Astronomer's Telegram, #299

Advertised on:
7
2004
Number of authors
2
IAC number of authors
0
Citations
3
Refereed citations
2
Description
Optical spectra (range 600-690 nm; resolution 6000) were obtained during the current outburst of this black hole binary on July 4.65-4.75 UT with the Siding Spring 2.3-m telescope (+ DBS CCD spectrograph), right after the first visual reports appeared via vsnet-obs and vsnet-alert. The spectra were dominated by a very strong and broad H-alpha emission line with a full width at zero intensity of about 6000 km/s.
Type
Non-refereed
Black holes

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