Jet-induced star formation in centaurus A

Jeremy R. Mould; Alex Ridgewell; John S. Gallagher; Michael S. Bessell; Stefan Keller; Daniela Calzetti; John T. Clarke; John T. Trauger; Carl Grillmair; Gilda E. Ballester; Christopher J. Burrows; John Krist; David Crisp; Robin Evans; Richard Griffiths; J. Jeff Hester; John G. Hoessel; Jon A. Holtzman; Paul Scowen; Karl R. Stapelfeldt; Ragvendra Sahai; Alan Watson; Vicki Meadows

doi:10.1086/308927

Jet-induced star formation in centaurus A

Jeremy R. Mould, Alex Ridgewell, John S. Gallagher, Michael S. Bessell, Stefan Keller, Daniela Calzetti, John T. Clarke, John T. Trauger, Carl Grillmair, Gilda E. Ballester, Christopher J. Burrows, John Krist, David Crisp, Robin Evans, Richard Griffiths, J. Jeff Hester, John G. Hoessel, Jon A. Holtzman, Paul Scowen, Karl R. StapelfeldtRagvendra Sahai, Alan Watson, Vicki Meadows

Physics

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

64 Scopus citations

Abstract

The inner part of the northeast middle radio lobe of the radio galaxy Centaurus A is the site of complex interactions. This area contains a large H I cloud as well as filaments of ionized gas and associated blue knots, several of which exist along the northeastern edge of the radio-emitting zones. We observed the filaments and blue knots with the Hubble Space Telescope using WFPC2, and the ionized gas from the ground. Our sensitive, high angular resolution WFPC2 images reveal the presence of young stars, many concentrated in what appear to be OB associations, superimposed on a background sheet of older stars that is typical of the Cen A halo. The ages of the OB associations are estimated to be less than 15 Myr from a comparison of color-magnitude diagrams with those for the Large Magellanic Cloud star cluster NGC 2004, and younger stellar groups may be nearer regions of Hα emission. We discuss our data in the context of models for star formation stimulated by interactions between the radio jet and gas cloud.

Original language	English (US)
Pages (from-to)	266-276
Number of pages	11
Journal	Astrophysical Journal
Volume	536
Issue number	1 PART 1
DOIs	https://doi.org/10.1086/308927
State	Published - Jun 10 2000

Keywords

Galaxies: individual (NGC 5128)
Galaxies: jets
Galaxies: stellar content
Radio continuum: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/308927

Cite this

Mould, J. R., Ridgewell, A., Gallagher, J. S., Bessell, M. S., Keller, S., Calzetti, D., Clarke, J. T., Trauger, J. T., Grillmair, C., Ballester, G. E., Burrows, C. J., Krist, J., Crisp, D., Evans, R., Griffiths, R., Hester, J. J., Hoessel, J. G., Holtzman, J. A., Scowen, P., ... Meadows, V. (2000). Jet-induced star formation in centaurus A. Astrophysical Journal, 536(1 PART 1), 266-276. https://doi.org/10.1086/308927

Mould, JR, Ridgewell, A, Gallagher, JS, Bessell, MS, Keller, S, Calzetti, D, Clarke, JT, Trauger, JT, Grillmair, C, Ballester, GE, Burrows, CJ, Krist, J, Crisp, D, Evans, R, Griffiths, R, Hester, JJ, Hoessel, JG, Holtzman, JA, Scowen, P, Stapelfeldt, KR, Sahai, R, Watson, A & Meadows, V 2000, 'Jet-induced star formation in centaurus A', Astrophysical Journal, vol. 536, no. 1 PART 1, pp. 266-276. https://doi.org/10.1086/308927

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title = "Jet-induced star formation in centaurus A",

abstract = "The inner part of the northeast middle radio lobe of the radio galaxy Centaurus A is the site of complex interactions. This area contains a large H I cloud as well as filaments of ionized gas and associated blue knots, several of which exist along the northeastern edge of the radio-emitting zones. We observed the filaments and blue knots with the Hubble Space Telescope using WFPC2, and the ionized gas from the ground. Our sensitive, high angular resolution WFPC2 images reveal the presence of young stars, many concentrated in what appear to be OB associations, superimposed on a background sheet of older stars that is typical of the Cen A halo. The ages of the OB associations are estimated to be less than 15 Myr from a comparison of color-magnitude diagrams with those for the Large Magellanic Cloud star cluster NGC 2004, and younger stellar groups may be nearer regions of Hα emission. We discuss our data in the context of models for star formation stimulated by interactions between the radio jet and gas cloud.",

keywords = "Galaxies: individual (NGC 5128), Galaxies: jets, Galaxies: stellar content, Radio continuum: galaxies",

author = "Mould, {Jeremy R.} and Alex Ridgewell and Gallagher, {John S.} and Bessell, {Michael S.} and Stefan Keller and Daniela Calzetti and Clarke, {John T.} and Trauger, {John T.} and Carl Grillmair and Ballester, {Gilda E.} and Burrows, {Christopher J.} and John Krist and David Crisp and Robin Evans and Richard Griffiths and Hester, {J. Jeff} and Hoessel, {John G.} and Holtzman, {Jon A.} and Paul Scowen and Stapelfeldt, {Karl R.} and Ragvendra Sahai and Alan Watson and Vicki Meadows",

year = "2000",

month = jun,

day = "10",

doi = "10.1086/308927",

language = "English (US)",

volume = "536",

pages = "266--276",

journal = "Astrophysical Journal",

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TY - JOUR

T1 - Jet-induced star formation in centaurus A

AU - Mould, Jeremy R.

AU - Ridgewell, Alex

AU - Gallagher, John S.

AU - Bessell, Michael S.

AU - Keller, Stefan

AU - Calzetti, Daniela

AU - Clarke, John T.

AU - Trauger, John T.

AU - Grillmair, Carl

AU - Ballester, Gilda E.

AU - Burrows, Christopher J.

AU - Krist, John

AU - Crisp, David

AU - Evans, Robin

AU - Griffiths, Richard

AU - Hester, J. Jeff

AU - Hoessel, John G.

AU - Holtzman, Jon A.

AU - Scowen, Paul

AU - Stapelfeldt, Karl R.

AU - Sahai, Ragvendra

AU - Watson, Alan

AU - Meadows, Vicki

PY - 2000/6/10

Y1 - 2000/6/10

N2 - The inner part of the northeast middle radio lobe of the radio galaxy Centaurus A is the site of complex interactions. This area contains a large H I cloud as well as filaments of ionized gas and associated blue knots, several of which exist along the northeastern edge of the radio-emitting zones. We observed the filaments and blue knots with the Hubble Space Telescope using WFPC2, and the ionized gas from the ground. Our sensitive, high angular resolution WFPC2 images reveal the presence of young stars, many concentrated in what appear to be OB associations, superimposed on a background sheet of older stars that is typical of the Cen A halo. The ages of the OB associations are estimated to be less than 15 Myr from a comparison of color-magnitude diagrams with those for the Large Magellanic Cloud star cluster NGC 2004, and younger stellar groups may be nearer regions of Hα emission. We discuss our data in the context of models for star formation stimulated by interactions between the radio jet and gas cloud.

AB - The inner part of the northeast middle radio lobe of the radio galaxy Centaurus A is the site of complex interactions. This area contains a large H I cloud as well as filaments of ionized gas and associated blue knots, several of which exist along the northeastern edge of the radio-emitting zones. We observed the filaments and blue knots with the Hubble Space Telescope using WFPC2, and the ionized gas from the ground. Our sensitive, high angular resolution WFPC2 images reveal the presence of young stars, many concentrated in what appear to be OB associations, superimposed on a background sheet of older stars that is typical of the Cen A halo. The ages of the OB associations are estimated to be less than 15 Myr from a comparison of color-magnitude diagrams with those for the Large Magellanic Cloud star cluster NGC 2004, and younger stellar groups may be nearer regions of Hα emission. We discuss our data in the context of models for star formation stimulated by interactions between the radio jet and gas cloud.

KW - Galaxies: individual (NGC 5128)

KW - Galaxies: jets

KW - Galaxies: stellar content

KW - Radio continuum: galaxies

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SP - 266

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JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART 1

ER -

Jet-induced star formation in centaurus A

Abstract

Keywords

ASJC Scopus subject areas

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