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[vsnet-alert 4603] (No Subject in original)
- Date: Mon, 10 Apr 2000 13:27:04 -0400
- To: vsnet-alert@kusastro.kyoto-u.ac.jp
- From: Michael Garcia <garcia@head-cfa.harvard.edu>
- Subject: [vsnet-alert 4603] (No Subject in original)
- cc: uemura@kusastro.kyoto-u.ac.jp, tkato@kusastro.kyoto-u.ac.jp, c.a.haswell@open.ac.uk, rih@astro.soton.ac.uk, cui@space.mit.edu, S.Chaty@open.ac.uk, mauche@cygnus.llnl.gov, SHRADER@grossc.gsfc.nasa.gov, reba@xeus.nrl.navy.mil, pac@astro.soton.ac.uk, jcv@ll.iac.es, kdh1@st-and.ac.uk, jonathan@tristram.phys.columbia.edu, zac@astro.keele.ac.uk, elr@pisces.as.utexas.edu
- Sender: owner-vsnet-alert@kusastro.kyoto-u.ac.jp
In response to VSNET-ALERT 4599, we note that on the nights of March
31 and April 1 (UT) we obtained 15 and 7 spectra (respectively) with
the FLWO 1.5m telescope and FAST spectrograph (3500-7000A, 5A
resolution). On both occasions, the He II 4686 emission line shows an
S-wave modulation. While the spacing and coverage of our data does
not allow an accurate determination of the period of the S-wave, it
does suggest the period is between 4 and 5 hours. This lends support
to the suggestion of Cook, Patterson and Fried (IAUC 7397) that the
orbital period is 0.1706(9) day (see also Cook, VSNET-ALERT 4554).
From: M. Garcia, J. McClintock, W. Brown, M. Pahre,
(Harvard/Smithsonian Center for Astrophysics)
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