Search found 461 matches

by Ernst Pollmann
Sun Jun 19, 2022 6:38 pm
Forum: Astrophysics, Theory, Publications ...
Topic: Publication about spectroscopy and interferometry
Replies: 8
Views: 3199

Re: Publication about spectroscopy and interferometry

Ok, I understand, Olivier,
but nevertheless, could you be so kind to pass them my posting?

Ernst
by Ernst Pollmann
Sun Jun 19, 2022 5:18 pm
Forum: Astrophysics, Theory, Publications ...
Topic: Publication about spectroscopy and interferometry
Replies: 8
Views: 3199

Re: Publication about spectroscopy and interferometry

Hi Olivier, you write in capter 4.3.1: In short, despite our ability to reproduce fairly well the Hα line profile of P Cygni observed in 2020 using such a less intense wind model, it is beyond the scope of the current paper to state that the intensity of the wind of P Cygni varied in this way during...
by Ernst Pollmann
Sun Jun 19, 2022 9:21 am
Forum: Astrophysics, Theory, Publications ...
Topic: Publication about spectroscopy and interferometry
Replies: 8
Views: 3199

Re: Publication about spectroscopy and interferometry

Hi Olivier, would you be so kind to send a copy of the paper? Another question: what about the evaluation of the del Sco spectra at BeSS? Are there further not jet evaluated spectra of other observers? Because of the periastron passage radial velocity of the star as much spectra as possible would be...
by Ernst Pollmann
Sat Jun 04, 2022 9:34 am
Forum: Be Stars survey
Topic: delta Sco - next periastron
Replies: 1
Views: 4347

Re: delta Sco - next periastron

Dear colleagues, Halpha radial velocity measurements of delta Sco are urgend required to determine the exact periastron time and to clarify the enigmatic RV dip linked with the question of a third body within that system. As it is seen, this RV dip have been first time observed during the campaign 2...
by Ernst Pollmann
Fri Jun 03, 2022 7:41 am
Forum: Introduction / Présentation
Topic: Spectroscopy conference VEGA22
Replies: 2
Views: 2693

Spectroscopy conference VEGA22

The very successfuly spectroscopy conference VEGA22 took place in Salzburg (Austria). The following link allows to watch some of the talks of that conderence. The other talks will be provide next days.
https://www.astrophoto.at/VEGA/vega-2022.html

Ernst Pollmann
by Ernst Pollmann
Thu May 12, 2022 6:53 pm
Forum: Spectra, results, information on activity ...
Topic: NEW NOU_T ECHELLE RESULTS
Replies: 146
Views: 133673

Re: NEW NOU_T ECHELLE RESULTS

Dear Joan,
the Halpha spectrum would be very helpful to determine the radial velocity during the periastron passage, the campaign of Anatoly Miroshnichenko.
Please send me your spectrum for evaluation of this parameter.

Ernst
by Ernst Pollmann
Sun May 08, 2022 7:52 am
Forum: Spectra, results, information on activity ...
Topic: Rho Cas Activity
Replies: 16
Views: 33691

Re: Rho Cas Activity

... at the AAVSO data base:

https://app.aavso.org/avspec/search

Ernst
by Ernst Pollmann
Tue Apr 12, 2022 1:02 pm
Forum: General Topics, Annoucements, Forum Life
Topic: Astro Spectroscopy event of the year 2022
Replies: 4
Views: 5462

Re: Astro Spectroscopy event of the year 2022

Hi Joan, I think there are a lot of other colleagues here within this forum, who could give also interesting and helpful inputs concerning your posting above. As you know, the field of my activity is constraint more on medium and high resolution spectroscopy, then within the low resolution field. I ...
by Ernst Pollmann
Mon Apr 11, 2022 10:27 am
Forum: General Topics, Annoucements, Forum Life
Topic: The Spetroscopy Magazine BAVMS
Replies: 1
Views: 1983

The Spetroscopy Magazine BAVMS

The Spectroscopy Magazine BAVMS will be available now at:
https://ui.adsabs.harvard.edu/search/q= ... 0desc&p_=0

Ernst Pollmann
by Ernst Pollmann
Wed Mar 23, 2022 3:44 pm
Forum: Be Stars survey
Topic: delta Sco Campaign
Replies: 3
Views: 9311

Re: delta Sco Campaign

Dear colleagues,
the descent of the Halpha radial velocity does have started.
Please take spectra of the star for determination of the periastron time.
Ernst Pollmann
delsco_RV.png