Valerie Desnoux wrote:Hi
Here the list of the TESS stars which are NOT in BeSS - just copy paste the list to one of your favorite excel tool
alt_ID Tmag ST RA DEC
BD+30_3853 7.007 B7V 300.244753 31.230478
MWC_314 7.678 sgB[e]? 290.39156 14.882506
...
Valerie
Hi Valerie,
I should caution here that some of the stars in the TESS spreadsheet linked to in this thread are NOT classical Be stars. For example, the second object on the list here is of suspected spectral type sgB[e], so a supergiant B[e] star with forbidden emission lines form a large but not-dense circumstellar disk/shell. Some others are main-sequence B stars with strong magnetic fields that confine circumstellar gas, producing H emission. Stars like this will mostly be assigned priority = 0 for the purpose of monitoring classical Be stars simultaneous with TESS, but they remain on the list because they may still be interesting objects to study. Sorry if this is obvious and didn't need stating- I just don't want to give the impression that
every star on the spreadsheet is a classical Be star (although the vast majority are).
The PDF 'book' you compiled of the bright TESS/BeSS stars is a very nice way to visualize the changing Halpha lines. Thanks for putting that together!
An important aspect is still missing from my spreadsheet! In general it does not include any Be stars brighter than V = 6 (or fainter than V=13, but that is of little consequence). This is because the original dataset I used to study Be stars with photometry was saturated brighter than V=6.5. TESS is able to provide excellent LCs for stars as bright as V = 4 (at the limit of saturation), and even brighter if LCs are carefully extracted for saturated stars (i.e. a good LC can be extracted for V=2 star). Of course, some of the most well-studied Be stars are brighter than V=6, and higher quality spectra is easier to acquire. The 'robot' file that Olivier linked to includes what I believe is a list of all BeSS stars. I will take the info for all of these stars brighter than V=6, cross-match them with the TESS observing strategy to know which sectors they fall in, and will update the spreadsheet. I will try to do this ASAP.