Presentation is loading. Please wait.

Presentation is loading. Please wait.

Hα Observations of the Binary System VV Cephei Ernst Pollmann

Published bySven Martin Modified over 5 years ago

Similar presentations

Presentation on theme: "Hα Observations of the Binary System VV Cephei Ernst Pollmann"— Presentation transcript:

1 Hα Observations of the Binary System VV Cephei Ernst Pollmann
ASPA Active Spectroscopy in Astronomy

2 VV Cephei 4,9 mag µ Cephei 4,0 mag
3 VV Cephei 4,9 mag µ Cephei 4,0 mag 1

3 1a

4 M2Iab Supergiant 2-3 Solar masses 1600 Solar radii
The orbit of the Be-star + Gasdisk leads to the eclipse by the M-type star Duration of eclipse: 673 days Periode: 20,4 years M2Iab Supergiant Solar masses 1600 Solar radii Last eclipse: Jun/1996 – August/1998 2

5 Rotating Hydrogen-Gasdisk and its hot Be-Star with 8 Solarmasses
blue shiftet red shiftet Observer 3

6 4

7 5

8 Time behavior of the Hα-emission since 1996 until today
Eclipse 6

9 V/R of the Hα-emission as function of orbital phase
7

10 Periastron passage 8 08/199401/2015 09/1999 09/2003 11/2009 10/2004
11/2005 8

11 Increase of the emission strength by mass overflow into the Be-disk at periastron
9

12 thanks for attention 14

Download ppt "Hα Observations of the Binary System VV Cephei Ernst Pollmann"

Similar presentations

The K Stars: Orange Giants & Brighter Dwarfs Presentation by Paramita Barai Astr 8600, Stellar Spectroscopy.

The K Stars: Orange Giants & Brighter Dwarfs Presentation by Paramita Barai Astr 8600, Stellar Spectroscopy.
ECLIPSING BINARIES IN OPEN CLUSTERS John Southworth Dr Pierre Maxted Dr Barry Smalley Astrophysics Group Keele University.

ECLIPSING BINARIES IN OPEN CLUSTERS John Southworth Dr Pierre Maxted Dr Barry Smalley Astrophysics Group Keele University.
Intensity and Distance Intensity depends on luminosity and distance Inverse-square law discovered by Newton Magnitude system used in astronomy.

Intensity and Distance Intensity depends on luminosity and distance Inverse-square law discovered by Newton Magnitude system used in astronomy.
The Family of Stars Chapter 8:. Organizing the Family of Stars: The Hertzsprung-Russell Diagram We know: Stars have different temperatures, different.

The Family of Stars Chapter 8:. Organizing the Family of Stars: The Hertzsprung-Russell Diagram We know: Stars have different temperatures, different.
The Family of Stars Chapter 9. If you want to study anything scientifically, the first thing you have to do is find a way to measure it. But measurement.

The Family of Stars Chapter 9. If you want to study anything scientifically, the first thing you have to do is find a way to measure it. But measurement.
LECTURE 3, AUGUST 31, 2010 ASTR 101, SECTION 3 INSTRUCTOR, JACK BRANDT 1ASTR 101-3, FALL 2010.

LECTURE 3, AUGUST 31, 2010 ASTR 101, SECTION 3 INSTRUCTOR, JACK BRANDT 1ASTR 101-3, FALL 2010.
 Arabic for foot  One of the galaxy's brightest stars.  Brilliant bluish-white Supergiant  775 light years away  70 times the sun's diameter.

 Arabic for "foot"  One of the galaxy's brightest stars.  Brilliant bluish-white Supergiant  775 light years away  70 times the sun's diameter.
A Spectrum: what it is and what it can tell us Mary Lou West AAI, July 26, 2013.

A Spectrum: what it is and what it can tell us Mary Lou West AAI, July 26, 2013.
Surveying the Stars Insert TCP 5e Chapter 15 Opener.

Surveying the Stars Insert TCP 5e Chapter 15 Opener.
Life and Evolution of Stars Chapter 9. Outline I.Masses of Stars: Binary Stars II.Variable Stars III.Spectral Types of Stars IV.H-R Diagram V.The Source.

Life and Evolution of Stars Chapter 9. Outline I.Masses of Stars: Binary Stars II.Variable Stars III.Spectral Types of Stars IV.H-R Diagram V.The Source.
Note that the following lectures include animations and PowerPoint effects such as fly-ins and transitions that require you to be in PowerPoint's Slide.

Note that the following lectures include animations and PowerPoint effects such as fly-ins and transitions that require you to be in PowerPoint's Slide.
Chapter 10 Measuring the Stars. Units of Chapter 10 The Solar Neighborhood Luminosity and Apparent Brightness Stellar Temperatures Stellar Sizes The Hertzsprung-Russell.

Chapter 10 Measuring the Stars. Units of Chapter 10 The Solar Neighborhood Luminosity and Apparent Brightness Stellar Temperatures Stellar Sizes The Hertzsprung-Russell.
Earth and Space Your name.

Earth and Space Your name.
Summary of Experiences from Observations of the Be  binary  Sco Anatoly Miroshnichenko University of North Carolina at Greensboro USA Properties of Be.

Summary of Experiences from Observations of the Be  binary  Sco Anatoly Miroshnichenko University of North Carolina at Greensboro USA Properties of Be.
Inferring Stellar Masses: Binary Systems More than 50 % of all stars are part of multiple systems. a) Visual Binaries: Both components observed directly.

Inferring Stellar Masses: Binary Systems More than 50 % of all stars are part of multiple systems. a) Visual Binaries: Both components observed directly.
Goal: To understand binary stars Objectives: 1)To review why we get binary star systems 2)To learn about the 2 different binary star types and how we find.

Goal: To understand binary stars Objectives: 1)To review why we get binary star systems 2)To learn about the 2 different binary star types and how we find.
Copyright © 2010 Pearson Education, Inc. Chapter 10 Measuring the Stars.

Copyright © 2010 Pearson Education, Inc. Chapter 10 Measuring the Stars.
Variable Stars & The Milky Way

Variable Stars & The Milky Way
Hα observations on the Be binary ζ Tauri First some introduction words asking for patience by Ernst Pollmann VdS Spectroscopy Group Germany.

Hα observations on the Be binary ζ Tauri First some introduction words asking for patience by Ernst Pollmann VdS Spectroscopy Group Germany.
Solid Molecules Neutral Gas Ionized Gas (Plasma) Level of ionization also reveals a star’s temperature 10 K 10 2 K 10 3 K 10 4 K 10 5 K 10 6 K.

Solid Molecules Neutral Gas Ionized Gas (Plasma) Level of ionization also reveals a star’s temperature 10 K 10 2 K 10 3 K 10 4 K 10 5 K 10 6 K.

Similar presentations

Ads by Google