Revealing the Ionization Properties of the Magellanic Stream Using Optical Emission

K. A. Barger; G. J. Madsen; A. J. Fox; B. P. Wakker; J. Bland-Hawthorn; D. Nidever; L. M. Haffner; Jacqueline Antwi-Danso; Michael Hernandez; N. Lehner; A. S. Hill; A. Curzons; T. Tepper-García; Lawrence Haffner

doi:10.3847/1538-4357/aa992a

Revealing the Ionization Properties of the Magellanic Stream Using Optical Emission

K. A. Barger, G. J. Madsen, A. J. Fox, B. P. Wakker, J. Bland-Hawthorn, D. Nidever, L. M. Haffner, Jacqueline Antwi-Danso, Michael Hernandez, N. Lehner, A. S. Hill, A. Curzons, T. Tepper-García, Lawrence Haffner

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

Abstract

The Magellanic Stream, a gaseous tail that trails behind the Magellanic Clouds, could replenish the Milky Way (MW) with a tremendous amount of gas if it reaches the Galactic disk before it evaporates into the halo. To determine how the Magellanic Stream's properties change along its length, we have conducted an observational study of the Hα emission, along with other optical warm ionized gas tracers, toward 39 sight lines. Using the Wisconsin Hα Mapper telescope, we detect Hα emission brighter than 30–50 mR in 26 of our 39 sight lines. This Hα emission extends over 2 degrees away from the H I emission. (See website for rest of abstract.)

Original language	American English
Journal	The Astrophysical Journal
Volume	851
DOIs	https://doi.org/10.3847/1538-4357/aa992a
State	Published - Dec 18 2017

Keywords

galaxies
Magellanic clouds
dwarf galaxies
interstellar medium

Disciplines

Astrophysics and Astronomy

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Barger, K. A., Madsen, G. J., Fox, A. J., Wakker, B. P., Bland-Hawthorn, J., Nidever, D., Haffner, L. M., Antwi-Danso, J., Hernandez, M., Lehner, N., Hill, A. S., Curzons, A., Tepper-García, T., & Haffner, L. (2017). Revealing the Ionization Properties of the Magellanic Stream Using Optical Emission. The Astrophysical Journal, 851. https://doi.org/10.3847/1538-4357/aa992a

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title = "Revealing the Ionization Properties of the Magellanic Stream Using Optical Emission",

abstract = " The Magellanic Stream, a gaseous tail that trails behind the Magellanic Clouds, could replenish the Milky Way (MW) with a tremendous amount of gas if it reaches the Galactic disk before it evaporates into the halo. To determine how the Magellanic Stream's properties change along its length, we have conducted an observational study of the Hα emission, along with other optical warm ionized gas tracers, toward 39 sight lines. Using the Wisconsin Hα Mapper telescope, we detect Hα emission brighter than 30–50 mR in 26 of our 39 sight lines. This Hα emission extends over 2 degrees away from the H I emission. (See website for rest of abstract.)",

keywords = "galaxies, Magellanic clouds, dwarf galaxies, interstellar medium",

author = "Barger, {K. A.} and Madsen, {G. J.} and Fox, {A. J.} and Wakker, {B. P.} and J. Bland-Hawthorn and D. Nidever and Haffner, {L. M.} and Jacqueline Antwi-Danso and Michael Hernandez and N. Lehner and Hill, {A. S.} and A. Curzons and T. Tepper-Garc{\'i}a and Lawrence Haffner",

year = "2017",

month = dec,

day = "18",

doi = "10.3847/1538-4357/aa992a",

language = "American English",

volume = "851",

journal = "The Astrophysical Journal",

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TY - JOUR

T1 - Revealing the Ionization Properties of the Magellanic Stream Using Optical Emission

AU - Barger, K. A.

AU - Madsen, G. J.

AU - Fox, A. J.

AU - Wakker, B. P.

AU - Bland-Hawthorn, J.

AU - Nidever, D.

AU - Haffner, L. M.

AU - Antwi-Danso, Jacqueline

AU - Hernandez, Michael

AU - Lehner, N.

AU - Hill, A. S.

AU - Curzons, A.

AU - Tepper-García, T.

AU - Haffner, Lawrence

PY - 2017/12/18

Y1 - 2017/12/18

N2 - The Magellanic Stream, a gaseous tail that trails behind the Magellanic Clouds, could replenish the Milky Way (MW) with a tremendous amount of gas if it reaches the Galactic disk before it evaporates into the halo. To determine how the Magellanic Stream's properties change along its length, we have conducted an observational study of the Hα emission, along with other optical warm ionized gas tracers, toward 39 sight lines. Using the Wisconsin Hα Mapper telescope, we detect Hα emission brighter than 30–50 mR in 26 of our 39 sight lines. This Hα emission extends over 2 degrees away from the H I emission. (See website for rest of abstract.)

AB - The Magellanic Stream, a gaseous tail that trails behind the Magellanic Clouds, could replenish the Milky Way (MW) with a tremendous amount of gas if it reaches the Galactic disk before it evaporates into the halo. To determine how the Magellanic Stream's properties change along its length, we have conducted an observational study of the Hα emission, along with other optical warm ionized gas tracers, toward 39 sight lines. Using the Wisconsin Hα Mapper telescope, we detect Hα emission brighter than 30–50 mR in 26 of our 39 sight lines. This Hα emission extends over 2 degrees away from the H I emission. (See website for rest of abstract.)

KW - galaxies

KW - Magellanic clouds

KW - dwarf galaxies

KW - interstellar medium

UR - http://iopscience.iop.org/article/10.3847/1538-4357/aa992a/pdf

U2 - 10.3847/1538-4357/aa992a

DO - 10.3847/1538-4357/aa992a

M3 - Article

VL - 851

JO - The Astrophysical Journal

JF - The Astrophysical Journal

ER -

Revealing the Ionization Properties of the Magellanic Stream Using Optical Emission

Abstract

Keywords

Disciplines

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