Mapping of infrared helium and hydrogen line profiles in the central few arcseconds of the galaxy

T. R. Geballe; K. Krisciunas; J. A. Bailey; R. Wade

Mapping of infrared helium and hydrogen line profiles in the central few arcseconds of the galaxy

T. R. Geballe^*, K. Krisciunas, J. A. Bailey, R. Wade

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Spectra of the helium 2.06 μm and hydrogen 2.17 μm lines, which were obtained on a grid of positions in the Sgr A*/IRS 16 region of the Galactic center, confirm the existence of an extended region of high-velocity redshifted line emission centered near these objects. Relative to the rest of the Galactic center, the ionization state of this region appears to be high, as does the ionization state of some lower velocity gas in the vicinity of IRS 16NE. Important sources of ionizing UV radiation probably are located close to these two clouds.

Original language	English
Journal	Astrophysical Journal
Volume	370
Issue number	2 PART 2
Publication status	Published - 1 Apr 1991

Keywords

Galaxies: internal motions
Galaxies: nuclei
Galaxies: The Galaxy
Infrared: spectra
Line profiles

Cite this

@article{2ad246c7ec8146b0941931b2e741013f,

title = "Mapping of infrared helium and hydrogen line profiles in the central few arcseconds of the galaxy",

abstract = "Spectra of the helium 2.06 μm and hydrogen 2.17 μm lines, which were obtained on a grid of positions in the Sgr A*/IRS 16 region of the Galactic center, confirm the existence of an extended region of high-velocity redshifted line emission centered near these objects. Relative to the rest of the Galactic center, the ionization state of this region appears to be high, as does the ionization state of some lower velocity gas in the vicinity of IRS 16NE. Important sources of ionizing UV radiation probably are located close to these two clouds.",

keywords = "Galaxies: internal motions, Galaxies: nuclei, Galaxies: The Galaxy, Infrared: spectra, Line profiles",

author = "Geballe, {T. R.} and K. Krisciunas and Bailey, {J. A.} and R. Wade",

year = "1991",

month = apr,

day = "1",

language = "English",

volume = "370",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing",

number = "2 PART 2",

}

TY - JOUR

T1 - Mapping of infrared helium and hydrogen line profiles in the central few arcseconds of the galaxy

AU - Geballe, T. R.

AU - Krisciunas, K.

AU - Bailey, J. A.

AU - Wade, R.

PY - 1991/4/1

Y1 - 1991/4/1

N2 - Spectra of the helium 2.06 μm and hydrogen 2.17 μm lines, which were obtained on a grid of positions in the Sgr A*/IRS 16 region of the Galactic center, confirm the existence of an extended region of high-velocity redshifted line emission centered near these objects. Relative to the rest of the Galactic center, the ionization state of this region appears to be high, as does the ionization state of some lower velocity gas in the vicinity of IRS 16NE. Important sources of ionizing UV radiation probably are located close to these two clouds.

AB - Spectra of the helium 2.06 μm and hydrogen 2.17 μm lines, which were obtained on a grid of positions in the Sgr A*/IRS 16 region of the Galactic center, confirm the existence of an extended region of high-velocity redshifted line emission centered near these objects. Relative to the rest of the Galactic center, the ionization state of this region appears to be high, as does the ionization state of some lower velocity gas in the vicinity of IRS 16NE. Important sources of ionizing UV radiation probably are located close to these two clouds.

KW - Galaxies: internal motions

KW - Galaxies: nuclei

KW - Galaxies: The Galaxy

KW - Infrared: spectra

KW - Line profiles

UR - http://www.scopus.com/inward/record.url?scp=0039882547&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0039882547

SN - 0004-637X

VL - 370

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

Mapping of infrared helium and hydrogen line profiles in the central few arcseconds of the galaxy

Abstract

Keywords

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