Continuation of delta Sco monitoring

[Ernst Pollmann]

This morning I took my first delta Sco spectrum in 2012.
The radial velocity have been evaluated with the mirror methode (see fig: delsco1 and delsco 2) of the program HRV-MM of my colleague Roland Bücke (Hamburg). This method is very useful, in case of asymmetrical line profiles. This is fairly strong the case in this spectrum (see in this context: Comparison of Selected Methods for Radial Velocity Measurements; Proceedings IAU Symposium No. 240, 2006)

The RV value does fit well into the "campaign" monitoring of 2011. Unfortunately there is no feed back from the professional astronomy so far, regarding our efforts of this campaign, particularly regarding the double-dip and the increase to approx. 5 km/s after the periastron passage.
The EW did increase too corresponding the behavior after the last periastron passage 2000.

Ernst Pollmann
-----------------------------------------
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
in cooperation with
http://www.astronomie.de

[Ernst Pollmann]

Delta Sco up-to-date:
http://astrospectroscopy.de/delscocampaign2011.pdf


Ernst Pollmann
----------------------------------------
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische- ... troskopie/

[Ernst Pollmann]

Further results of the delta Sco monitoring. See:

http://astrospectroscopy.de/delscocampaign2011.pdf

Ernst Pollmann
----------------------------------------
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische- ... troskopie/

[Ernst Pollmann]

delta Sco up-to-date: April 2012

http://astrospectroscopy.de/delscocampaign2011.pdf


Ernst Pollmann
----------------------------------------
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische- ... troskopie/

[Ernst Pollmann]

delta Sco up-to-date: May 2012

1) Continuation of the Hα-EW monitoring
2) Continuation of the Hα-radial velocity monitoring
3) Disk growth leads to decrease of the FWHM-velocity

http://astrospectroscopy.de/delscocampaign2011.pdf

Ernst Pollmann
----------------------------------------
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische- ... troskopie/

[Ernst Pollmann]

delta Sco up-to-date: June 2012

1) Continuation of the Hα-EW monitoring
2) Continuation of the Hα-radial velocity monitoring
3) Disk growth leads to decrease of the FWHM-velocity

http://astrospectroscopy.de/delscocampaign2011.pdf

Ernst Pollmann
----------------------------------------
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische- ... troskopie/

[Ernst Pollmann]

delta Sco up-to-date: July 2012

1) Continuation of the Hα-EW monitoring
2) Continuation of the Hα-radial velocity monitoring
3) Disk growth leads to decrease of the FWHM-velocity

http://astrospectroscopy.de/delscocampaign2011.pdf

Ernst Pollmann
----------------------------------------
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische- ... troskopie

[Ernst Pollmann]

delta Sco up-to-date: August 2012

1) Continuation of the Hα-EW monitoring
2) Continuation of the Hα-radial velocity monitoring
3) Disk growth leads to decrease of the FWHM-velocity

http://astrospectroscopy.de/delscocampaign2011.pdf

The Halpha radial velocity shows a hardly understandable behavior during current visibility period.
A. Miroshnichenko is analysing at present all the spectra he has gotten meanwhile. A very short conclusion of his first interpretation of the 2011-campaign results is to find at:

http://www.shelyak.com/dossier.php?id_dossier=36&lang=2

But this conclusion does not treat the strange 2012-RV behavior, as I mentioned above. So, the question is right now, can we trust our observations / evaluations or not? This is a fairly unsatisfactory situation …..

Ernst Pollmann
----------------------------------------
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische- ... troskopie