V1369 Cen

V1369 Cen

Postby Ken Harrison » Thu Dec 19, 2013 11:21 pm

Finally managed to get an hour of clear weather.
Using the Spectra-L200, 300 l/mm grating for approx. R=1000, Genesis 4" f5

The region around Hb continues to show strong Fe emissions.
novaCen201213_02.bass.png
novaCen201213_02.bass.png (37.05 KiB) Viewed 8558 times



Still processing the Ha - it appears to have reduced in intensity.
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Re: V1369 Cen

Postby Francois Teyssier » Fri Dec 20, 2013 5:12 am

Good spectrum, Ken. Could you send the fit file for Aras Data Base ?
The spectral development is very similar to Nova Del.
As I said in AAVSO forum, at this stage, there's no [O III] line ; they will appear at the beging of the nebular stage.
[OIII] lines are 4363, 4959 and 5007
All the best
François
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Re: V1369 Cen

Postby Ken Harrison » Wed Jan 08, 2014 3:22 am

Hmmm
Now working at R=4040....
Could have done with more exposure time....
The Hb region is the first processed...showing the now "standard P-Cyg" in both the Hb and Fe lines.
I've run a velocity graph based on the Hb (4861A) showing the larger absorption is still around the 1600Km/s
Feedback/ comments welcome.
(Francois - I sent a fits file to you...did you receive?)
novaCen_Hb_080114.png
novaCen_Hb_080114.png (39.66 KiB) Viewed 8490 times

novaCen_Hb_Vel_080114.png
novaCen_Hb_Vel_080114.png (30.21 KiB) Viewed 8490 times
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
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Re: V1369 Cen

Postby Ken Harrison » Mon Jan 27, 2014 12:55 am

Some results from last night.
I'll upload the fits later.
The P-Cyg profiles seem to have diminished.

novaCen_Ha_270114.png
novaCen_Ha_270114.png (29.91 KiB) Viewed 8443 times

novaCen_Hb_270114.png
novaCen_Hb_270114.png (40.36 KiB) Viewed 8443 times

novaCen_Hb_[0III]_270114.png
novaCen_Hb_[0III]_270114.png (41.54 KiB) Viewed 8443 times

novaCen_Hgamma_270114.png
novaCen_Hgamma_270114.png (42.28 KiB) Viewed 8443 times

NovaCen_Hgamma_below_270114.png
NovaCen_Hgamma_below_270114.png (41.58 KiB) Viewed 8443 times
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
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Re: V1369 Cen

Postby Ken Harrison » Wed Feb 05, 2014 4:51 am

Very hot weather for the past few days (over 32 deg overnight!) stopped the observing sessions.
A bit cooler last night (28 deg)
The attached spectra show the absorption features beginning to show in the Fe and Ha. P-Cyg profiles certainly reducing.

novaCen_Hb_050214.png
novaCen_Hb_050214.png (47.22 KiB) Viewed 8418 times

novaCen_Ha_050214.png
novaCen_Ha_050214.png (31.4 KiB) Viewed 8418 times
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
http://www.astronomicalspectroscopy.com
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Re: V1369 Cen

Postby Ken Harrison » Sat Feb 15, 2014 5:48 am

The observing conditions in Victoria, Australia have been very poor due to the horror bushfires and thick smoke haze we've been having.
Thankfully the loss of life has been minimal.

The attached spectra were obtained on the 10th Feb and show the current situation for the nova. The Ha emission is very strong.
NovaCen_Ha_100214.png
just look at the ADU values!
NovaCen_Ha_100214.png (27.39 KiB) Viewed 8393 times

novaCen_Hb_100214.png
some P-Cyg ?
novaCen_Hb_100214.png (33.84 KiB) Viewed 8393 times

novaCen_Na_100214.png
still shows atmospheric absorption in the Na line?
novaCen_Na_100214.png (36.1 KiB) Viewed 8393 times
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
http://www.astronomicalspectroscopy.com
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Posts: 178
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Re: V1369 Cen

Postby Ken Harrison » Mon Feb 24, 2014 8:17 pm

Latest V1369 Cen spectra.
The profiles of the Ha and [NII] have significantly changed from the 10th Feb.......

NovaCen_Hb_230214.png
NovaCen_Hb_230214.png (40.38 KiB) Viewed 8369 times

novaCen_[NII]_230214.png
novaCen_[NII]_230214.png (43.48 KiB) Viewed 8369 times

NovaCen_Ha_230214.png
NovaCen_Ha_230214.png (30.31 KiB) Viewed 8369 times

novaCen_Ha_Vel_230214.png
novaCen_Ha_Vel_230214.png (32.36 KiB) Viewed 8369 times
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
http://www.astronomicalspectroscopy.com
Ken Harrison
 
Posts: 178
Joined: Thu Oct 25, 2012 5:45 am
Location: St Leonards, Australia

Re: V1369 Cen

Postby Ken Harrison » Mon Apr 07, 2014 9:42 pm

Some V1369 data from the 5th April.
Significant changes around Hb, the Fe "curtain" seems to have gone and the nebula phase starting?
NovaCen_Hb_050414.png
NII/[OIII] now more intense than Hb - Fe disappears
NovaCen_Hb_050414.png (43.08 KiB) Viewed 8263 times

NovaCen_NII..png
Region around Na/NII
NovaCen_NII..png (70.3 KiB) Viewed 8263 times

NovaCen_Ha_050414.png
similar Ha profiles and intensity
NovaCen_Ha_050414.png (29.1 KiB) Viewed 8263 times
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
http://www.astronomicalspectroscopy.com
Ken Harrison
 
Posts: 178
Joined: Thu Oct 25, 2012 5:45 am
Location: St Leonards, Australia

Re: V1369 Cen

Postby Ken Harrison » Tue Apr 15, 2014 11:14 pm

Results from last night show the persistent Ha absorptions and the steady increase of the Ha emission.
novacenHa050414 to 150414.png
Ha from 5th to 15th April
novacenHa050414 to 150414.png (42.37 KiB) Viewed 8234 times
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
http://www.astronomicalspectroscopy.com
Ken Harrison
 
Posts: 178
Joined: Thu Oct 25, 2012 5:45 am
Location: St Leonards, Australia

Re: V1369 Cen

Postby Ken Harrison » Mon Apr 21, 2014 12:14 am

Here's the Hb Region from the 15th.

Hmmmm

I think the [OIII] at 4959 and 5007 are beginning to develop.

The others could be NII (5001), NIII (4638) and HeII (4686)
novacenHb150414.png
Growth of the [OIII]??
novacenHb150414.png (44.16 KiB) Viewed 8215 times




Every spectrum seems to show more and more features......
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
"Imaging Sunlight - Using a digital Spectroheliograph" - Springer
http://www.astronomicalspectroscopy.com
Ken Harrison
 
Posts: 178
Joined: Thu Oct 25, 2012 5:45 am
Location: St Leonards, Australia


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