QR Vul - HD192685 - HR 7739

AD: +20 15 15.9 - DEC: +25 35 31.0 - Mag: 4.759 - Sp: B3Ve

QR Vul is a Be Star, identified as variable in photometry - K. Pavlovski et al UBV photometry of Be stars at Hvar: 1972-1990

During our observing session at the Spectro Workshop at the Observatory of Haute-Provence, an outburst was first reported in August 2008. The H-alpha line showed a double peak emission as the previous observation in Sept 2007 was showing the line in absorption. The emission completely disappeared between march 2009 and June 2009.

Outburst

A new outburst has been again observed during the 2011 OHP spectro workshop. As this star was more closely monitored thanks to the ArasBeAm portal linked to the Be spectrum database BeSS (GEPI- Meudon, Paris Observatory), it seems the outburst occured between June 2nd and August 1st.

H-alpha line - Heliocentric velocity corrected, atmospheric lines removed
From V.Desnoux (Paris, June with C9 - Lhires3 and 1200 l/mm grating - OHP, August with C8 - Lhires3 and 2400l/mm grating)

EW time evolution

Using the spectra collected in the BeSS database, it was interesting to look at the equivalent width evolution as a marker of the emission strengh of the H-alpha line. All data processed using Visual Spec. Error on the equivalent width is calculated using the formula from Chalabaev, A. and Maillard, J.P. (1983) - it takes into account the S/N calculated on the region 6592-6595 angstrom and the sampling factor.

Equivalent Width evolution over time computed on all the spectra from the BeSS database

Zoom on the 3 years period from the last observed outburst

Time diagram summary of the H-alpha line - first spectrum in 2003, By C.Neiner at Pic du Midi

Complete serie of the BeSS spectra centered on H-alpha line

The continuum is scaled in the region 6592-6595 angstrom - Heliocentric velocity is corrected using the values in the header of the BESS VO-Table file. This page is generated by Visual Spec.

$C:\ccd\spec_mdi\QRVul\ta_alopez%2fc11lhires3r2400sbigst402me%2fbess_qrvul--profil-2b-calo.dat$	$C:\ccd\spec_mdi\QRVul\ta_pdubreuil%2fc8lhires32400atik314l%2f_qrvul_20110804_906.dat$	$C:\ccd\spec_mdi\QRVul\ta_pdubreuil%2fc8lhires32400atik314l%2f_qrvul_20110801_959.dat$
$C:\ccd\spec_mdi\QRVul\ta_vdesnoux%2fc9lhiresiii1200qsi5832x2f35%2ft_qrvul_20110602_077.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo%2fnou16%2fqr%20vul_20101005.dat$	$C:\ccd\spec_mdi\QRVul\ta_bmauclaire%2flhires31512400sct03mst8%2fbess_qr_vul_20100922_951.dat$
$C:\ccd\spec_mdi\QRVul\ta_cbuil%2fc11eshelqsi532%2f_hd192685_20100911_806_34.dat$	$C:\ccd\spec_mdi\QRVul\ta_vdesnoux 2fc8lhiresiii2400qsi532 2f_qrvul_20100809_965_1c.dat$	$C:\ccd\spec_mdi\QRVul\ta_tgarrel 2flhires32400cn212atik314l 2f_qr_vul_20100630_013.dat$
$C:\ccd\spec_mdi\QRVul\ta_cbuil 2fc11eshelqsi532 2f_qrvul_20100523_117_34.dat$	$C:\ccd\spec_mdi\QRVul\ta_cbuil 2fc11eshelqsi532 2f_qrvul_20100417_143_34.dat$	$C:\ccd\spec_mdi\QRVul\ta_cbuil 2fc11eshelqsi532 2f_hd192685_20090929_859_34.dat$
$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnou16 2fqr 20vul_20090820.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnou16 2fqr 20vul_20090814.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnou16 2fqr 20vul_20090810.dat$
$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnou16 2fqr 20vul_20090730.dat$	$C:\ccd\spec_mdi\QRVul\ta_cbuil 2ft60eshelqsi532 2f_hd192685_20090623_983_34.dat$	$C:\ccd\spec_mdi\QRVul\ta_jterry 2ftsc254lhires129r1200sbigst8 2fhd192685_20090612.dat$
$C:\ccd\spec_mdi\QRVul\ta_cbuil 2fc11eshelqsi532 2f_hd192685_20090321_201_34.dat$	$C:\ccd\spec_mdi\QRVul\ta_cbuil 2fc11eshelqsi532 2f_hd192685_20090319_198_34.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr 20vul20081207.dat$
$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fsc12 2fqrvul20081126.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr_vul20081123.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fsc12 2fqr 20vul20081114.dat$
$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr_vul20081025.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr 20vul20081010.dat$	$C:\ccd\spec_mdi\QRVul\ta_cbuil 2fc11lhiresiii011200qsi532 2f_hd192685_20081006_779.dat$
$C:\ccd\spec_mdi\QRVul\ta_jribeiro 2fjrc14lhiresiii262400st7 2f20081002qrvul_1c.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fsc12 2fqr 20vul20080930.dat$	$C:\ccd\spec_mdi\QRVul\ta_mpujol 2fm12lhiresiii452400audine401 2fhd192685_20080920.dat$
$C:\ccd\spec_mdi\QRVul\ta_mpujol 2fm12lhiresiii452400audine401 2fhd192685_20080916.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr 20vul20080913.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr 20vul20080912.dat$
$C:\ccd\spec_mdi\QRVul\ta_othizy 2flhires30022400c11st1603 2f20080907_qrvul_2c.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr_vu20080830.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr 20vul20080828.dat$
$C:\ccd\spec_mdi\QRVul\ta_bmauclaire 2flhires31512400sct03maudinekaf1602e 2fbess_qr_vul_20080827.dat$	$C:\ccd\spec_mdi\QRVul\ta_jterry 2fstc254lhires129sbigst8 2fqrvul_20080827.dat$	$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr 20vul20080824.dat$
$C:\ccd\spec_mdi\QRVul\ta_jguarroflo 2fnewton254lhiresb12taudine403 2fqr_vul20080823.dat$	$C:\ccd\spec_mdi\QRVul\ta_othizy 2flhires30022400c11st1603 2f20080823_qrvul_lhires3_002-2400-c11-st1603_1c.dat$	$C:\ccd\spec_mdi\QRVul\ta_jribeiro 2fjrc925lhiresiii262400st7 2f20080821qrvul_1c.dat$
$C:\ccd\spec_mdi\QRVul\ta_scharbonnel 2fm12ap1200lhiresiii007r2400st10 2fqr_vul_1c.dat$	$C:\ccd\spec_mdi\QRVul\ta_vdesnoux 2fed120lhires31r1200audinekf400 2ftqrvul_1c.dat$	$C:\ccd\spec_mdi\QRVul\ta_cbuil 2fc11lhires3120001ccd402me 2f_192685_20070909_874.dat$
$C:\ccd\spec_mdi\QRVul\tp_cneiner 2fmusicospolartbl 2fl041s06 2fl041s06_qrvul_0940n40.dat$	$C:\ccd\spec_mdi\QRVul\tp_cneiner 2felodieohp193 2fohp_20030811_0024n64.dat$

Some Articles referring to QR Vul

Pavlovski & Bozic 1982; Harmanec et al. 1982b; Barker 1982