NGC 206, a hole in M31

E. Brinks

NGC 206, a hole in M31

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Abstract

New high resolution 21 cm line observations of M31 show that the interstellar medium of this galaxy contains numerous holes in the H I distribution, some of which are clearly correlated with OB-associations. These holes appear to belong to the same class of objects as the super shells and giant bubbles in the Galaxy and the Magellanic Clouds. NGC 206, a 20-million yr old rich OB-association, coincident with a large 400 x 800 pc hole is studied in detail. Here, 2-million solar masses of H I is missing. This is partly ionized and partly blown away. The observed H-alpha emission is in agreement with the number of OB-stars found

Original language	English
Pages (from-to)	L1-L4
Journal	Astronomy & Astrophysics
Volume	95
Issue number	1
Publication status	Published - 1 Feb 1981

Keywords

ANDROMEDA GALAXY, B STARS, GALACTIC STRUCTURE, HYDROGEN CLOUDS, INTERSTELLAR GAS, O STARS, H ALPHA LINE, MAGELLANIC CLOUDS, RADIO ASTRONOMY, RADIO EMISSION

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@article{385ef59914174ae28205973d98979637,

title = "NGC 206, a hole in M31",

abstract = "New high resolution 21 cm line observations of M31 show that the interstellar medium of this galaxy contains numerous holes in the H I distribution, some of which are clearly correlated with OB-associations. These holes appear to belong to the same class of objects as the super shells and giant bubbles in the Galaxy and the Magellanic Clouds. NGC 206, a 20-million yr old rich OB-association, coincident with a large 400 x 800 pc hole is studied in detail. Here, 2-million solar masses of H I is missing. This is partly ionized and partly blown away. The observed H-alpha emission is in agreement with the number of OB-stars found",

keywords = "ANDROMEDA GALAXY, B STARS, GALACTIC STRUCTURE, HYDROGEN CLOUDS, INTERSTELLAR GAS, O STARS, H ALPHA LINE, MAGELLANIC CLOUDS, RADIO ASTRONOMY, RADIO EMISSION",

author = "E. Brinks",

year = "1981",

month = feb,

day = "1",

language = "English",

volume = "95",

pages = "L1--L4",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "1",

}

TY - JOUR

T1 - NGC 206, a hole in M31

AU - Brinks, E.

PY - 1981/2/1

Y1 - 1981/2/1

N2 - New high resolution 21 cm line observations of M31 show that the interstellar medium of this galaxy contains numerous holes in the H I distribution, some of which are clearly correlated with OB-associations. These holes appear to belong to the same class of objects as the super shells and giant bubbles in the Galaxy and the Magellanic Clouds. NGC 206, a 20-million yr old rich OB-association, coincident with a large 400 x 800 pc hole is studied in detail. Here, 2-million solar masses of H I is missing. This is partly ionized and partly blown away. The observed H-alpha emission is in agreement with the number of OB-stars found

AB - New high resolution 21 cm line observations of M31 show that the interstellar medium of this galaxy contains numerous holes in the H I distribution, some of which are clearly correlated with OB-associations. These holes appear to belong to the same class of objects as the super shells and giant bubbles in the Galaxy and the Magellanic Clouds. NGC 206, a 20-million yr old rich OB-association, coincident with a large 400 x 800 pc hole is studied in detail. Here, 2-million solar masses of H I is missing. This is partly ionized and partly blown away. The observed H-alpha emission is in agreement with the number of OB-stars found

KW - ANDROMEDA GALAXY, B STARS, GALACTIC STRUCTURE, HYDROGEN CLOUDS, INTERSTELLAR GAS, O STARS, H ALPHA LINE, MAGELLANIC CLOUDS, RADIO ASTRONOMY, RADIO EMISSION

M3 - Article

SN - 0004-6361

VL - 95

SP - L1-L4

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

IS - 1

ER -

NGC 206, a hole in M31

Abstract

Keywords

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