Search found 46 matches

by J Labadie Bartz
Thu Oct 31, 2019 12:29 am
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Olivier, I just want to say that's a really awesome dataset you're showing there. Very cool seeing the Halpha evolution, and even better that this happened at the same time as TESS observations. Unfortunately I wasn't able to contribute much to this, but especially since there was no pre-existing di...
by J Labadie Bartz
Tue Oct 22, 2019 4:06 pm
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi everyone, I've had bad luck lately and haven't been able to get as much data from the NRES spectrographs as I had hoped lately, mostly due to telescope hardware problems. Still, I expect the combination of the NRES and all of your spectra will still provide an excellent dataset for V357 Lac. This...
by J Labadie Bartz
Sun Oct 13, 2019 6:16 pm
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi all, Continuing to see interesting variability in V357 Lac. The first spectrum here is on the night of Oct. 4. He_I_6678_01.png Fe_II_5169_03.png smoothed_b_H-alpha_01.png Also working on V442 and, where the first spectrum is on the night of Oct. 9. H-alpha_V442_and_01.png smoothed_b_H-beta_01.png
by J Labadie Bartz
Fri Oct 04, 2019 9:00 pm
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi everyone, Good news! TESS sectors 14 and 15 are now available, and I am beginning to incorporate your data into the analysis of a few systems. This will take some time since there are a lot of stars with different properties. I'm starting with HD_194779, which transitions from disk-less, to poses...
by J Labadie Bartz
Tue Sep 24, 2019 4:56 pm
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi everyone, Great work with these observation! Very interesting to see the variability in the Helium lines in particular. I've been doing some more reading on the topic, and this is convincingly suggestive of ongoing and inhomogeneous mass ejection from the star (the He emission wings in particular...
by J Labadie Bartz
Tue Sep 17, 2019 3:18 am
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi everyone, Nice spectra of V357 Lac! Some interesting stuff here that I'll comment on while it's fresh in my mind. - There is undoubtedly emission in the wings of some Helium lines, most notably He 6678 and He 5876. These emission peaks are at a large separation (up to ~400 km/s by eye) compared t...
by J Labadie Bartz
Sat Sep 14, 2019 4:22 pm
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi everyone, So far I've been a bit vague about the goals of this project. My main scientific goal is to select just a few classical Be stars (~4) and monitor them very intensively simultaneous with the TESS observations. The selection process takes a lot of work because it is necessary to go though...
by J Labadie Bartz
Thu Sep 12, 2019 8:41 pm
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi again, I am working on checking how the sector 16 shift changes the target list. I can not easily do this in an automatic way because the software I used to make the target list does not know about the sector 16 shift and there is no easy way to incorporate that. So, I am starting with the highes...
by J Labadie Bartz
Wed Sep 11, 2019 12:11 am
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi all, Robin, Hi Jon, I have heard via another source that the planned coordinates for sector 16 have been changed because of a problem with scattered light. Does this affect any of the targets from 11th Sept onward ? Cheers Robin Yes, this will affect the targets from 11 Sept. onward. I made this ...
by J Labadie Bartz
Fri Sep 06, 2019 6:57 pm
Forum: Be Stars survey
Topic: Call for monitoring Be stars in the TESS sectors
Replies: 94
Views: 116181

Re: Call for monitoring Be stars in the TESS sectors

Hi all, Thanks for the updates! It will be especially interesting to look at all the spectra for HD 194779 together once the TESS data is available since the spectra clearly show disk build up. This star will continue to be an excellent target to observe at least until Sept. 11, which is the date TE...