[ArasBeAM]

Welcome !

ArasBeam is the website dediacted to Be stars amateur observers. Its goal is to organize the spectroscopic observations of Be stars by amateurs from all over the world.

Be stars evolve permanently, and the cause of their evolution is not fully understood. To better understand those evolutions, a regular tracking of as much stars as possible is required : a job accessible to amateur astronomers, and useful for science !

This site, as well as Be Observations Program is developped in collaboration with GEPI team (Observatoire de Paris-Meudon), and is based on data recorded in BeSS database.

You can use this website to study and analyse data already recorded, but you can do still better : join the observers team to multiply our measuements !

If you have questions, if you need questions about instruments, software, targets, and so on, join the distribution list Spectro-l

The most recent articles

Radialvelocity in zeta Tauri

Friday 8 January 2010 par Ernst Pollmann

Monitoring of the radial velocity in ζ Tauri One of the main aim of the monitoring of the radial velocity of HeI6678 of ζ Tau of my colleague R. Bücke (Hamburg) and me, is the estimation of its longterm variability (see fig.1: Until now monitored longterm component of the radial velocity of (...)

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Periodic behavior of the HeI6678 emission in δ Sco

Friday 8 January 2010 par Ernst Pollmann

The spectral range 6500-6700 Å includes both Halpha and the HeI line at 6678 Å, and this report covers our observations made of those two lines. This permits a study of the correlation between their equivalent widths (EWs) and line profiles. A signal-to- noise ratio (as a rule > 400) is (...)

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gamma Cas

V-Brightness and Halpha Spectroscopy of the Be-star gamma Cas

Saturday 21 November 2009 par Ernst Pollmann

V-Brightness and Hα-Spectroscopy of the Be-Star γ Cas In addition to the meanwhile probably well known cooperation between AAVSO and „ASPA-“Active Spectroscopy in Astronomy“ concerning the LBV-Star P Cygni, a further similar cooperation between ASPA and the Hungarian variable star observer Ferenc (...)

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CHARA/VEGA observations at Mt Wilson

Some complementary Halpha spectra requested !

Saturday 21 November 2009 par Philippe Stee

Dear Friends, we are currently observing Gamma Cas and 48 And and AB Aur (an Herbig Ae star), HD 43445 (Theta Ori) from November 17 to 22, 2009 with the CHARA interferometer (http://www.chara.gsu.edu/CHARA/ ) and the VEGA instrument (http://www-g.oca.eu/gemini/projets/...). We are working on (...)

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ProAm 2009 - Meeting at La Rochelle

Tuesday 3 November 2009 par Francois Cochard

Last week (26-29 Oct 2009), we had a great meeting at la Rochelle (France), organized by the CNRS (Centre National de la Recherche Scientifique), about all collaborations between professional and amateur astronomers

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V378 And

Sunday 11 October 2009 par desnova

Evolution of the H-alpha line

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New features on ArasBeam !

Sunday 4 October 2009 par Francois Cochard

ArasBeam restarts with some new features : You can select only Ha spectra (or any wavelegnth) in all pages. We can then better focus on Ha observations : the color coding of the stars to be observed is now dedicated to Ha spectra. Of course, you can observe the stars at the wavelength you (...)

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Delta Sco observation (from E. Pollmann)

Wednesday 30 September 2009 par Francois Cochard

*** Message sent on behalf of Ernst Pollmann *** The delta Sco observation period for this year is nearly at the end (at least in West Europe). It seems, the time behavior of the Halpha-EW has reached a minimum at JD 2454650 and that there could be a trend reversal to a increasing EW (see (...)

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QR Vul : Outburst is finished...

Thursday 27 August 2009 par Francois Cochard

In August 2008, Valérie Desnoux observed that QR Vul was in emission... this was the first ArasBeam outrburst ! After several month with constant observations (29 spectra during emission phase !), QR Vul is now back to silence... Then, I’ve changed the observation period to 90 days - until the (...)

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