Forum Replies Created
-
Posts
-
Indeed, Ernst, the trend of the peak heights “best fitting curve” seems to be a converging one. Perhaps it could also be a shadowing effect as a result of periodically higher mass transfer, (even cyclic ?). Anyway from “57700” a more significant trend is developing. One could also make a plot of V against R and compare it to the same for the EW’s.
Looks very promising! Nice work!
BTW, interesting programs to study ecliptic binaries are: BinSim: http://www.phys.lsu.edu/~rih/binsim/
and PHOEBE: http://phoebe-project.org/1.0/ both running on Unix/Linux/ Ubuntu and Windows platforms.
Kind regards,
Marc.That’s excellent news, Ernst, I’m certainly interested in such an animation ppt. You can send it by email, of course. Many thanks in advance !
A good idea could be to prepare already an upload corner in the BAA Spectroscopy Database? Or, if you have another proposal you prefer?
Kind regards,
Marc
Dear Ernst,
Very interesting campaign, which could be abbreviated as VV CEC 2017-19.
For this year observation highlights are the first contact, expected around August 4th and the second contact around October 27th. For the period July/August/September the constellation will be well placed to do HR (R>10.000) spectroscopy. So I could already do some preliminary tests to check the baseline behaviour with a LHIRES and also a SQUES echelle spectrograph. Currently we are in the middle of garden/observatory renovations, so I hope my observatory will be fully operational again in the first part of May.
I wondered if there is (or will be) a video animation/computer simulation available to show the movements of both components of VV Cephei together with an impression of the movements of the accretion disk based on the actual knowledge?
Kind regards,
Marc.
Indeed Andy, the excellent work of Ernst Pollman on the VV Cep campaign deserves certainly a broader participants group. I think he is looking for more observers to enter the project. I will contact him about his point of view on that.
Kind regards,
Marc.
Many thanks, Andy.
Good to see “Spectroscopy” is “alive and kicking” also among the BAA members 🙂
I think the upcoming VV Cephei Eclipse Campaign, which I propose to be called ” VV CEC 2017-19” is a great, if not the opportunity for all “Spectroscopically active members” to contribute to this exciting and interesting event. Must be doable for the major part of the members, as the magnitudes are within the range of most telescopes.
Would be a good idea to prepare a “standardized” recording protocol for the LR (R< 10.000) and HR (R>10.000) spectroscopy and a list of the types of available spectrograph equipments as well as a contributing observer list. Every contributing observer can be mentioned this way on the scientific papers afterwards.
As Ernst Pollmann already mentioned, a sufficiently pre-running baseline will be the major concern to finetune the V/R changes afterwards.
Kind regards,
Marc.
Many thanks for this remarkable welcome. I did not realize I created the 100th Member’s page, so I’m pleasantly surprised. This BAA membership will give me a great opportunity to promote astronomical spectroscopy and also upcoming Pro-Am projects is this field. I’m certainly looking forward to get acquainted with the BAA members ! Many thanks again! Marc.
