The outburst of V1647 orionis revealed by spitzer

J. Muzerolle; S. T. Megeath; K. M. Flaherty; K. D. Gordon; G. H. Rieke; E. T. Young; C. J. Lada

doi:10.1086/428832

The outburst of V1647 orionis revealed by spitzer

J. Muzerolle, S. T. Megeath, K. M. Flaherty, K. D. Gordon, G. H. Rieke, E. T. Young, C. J. Lada

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44 Scopus citations

Abstract

We present Spitzer Space Telescope observations of V1647 Ori, the outbursting source lighting McNeil's Nebula, taken near the optical peak of the outburst in early March 2004. The source is easily detected in all Spitzer imaging bands from 3.6 to 70 μm. The fluxes at all wavelengths are roughly a factor of 15 brighter than pre-outburst levels; we measure a bolometric luminosity of 44 L_⊙. We posit that this event is due to an increase in the accretion luminosity of the source. Simple models of an accretion disk plus a tenuous envelope can qualitatively explain the observed pre- and post-outburst spectral energy distributions. The accretion activity implied by our results indicates that the outburst may be intermediate between FUor- and EXor-type events. We also report the discovery of a previously unknown mid-infrared counterpart to the nearby Herbig-Haro object HH 22.

Original language	English (US)
Pages (from-to)	L107-L110
Journal	Astrophysical Journal
Volume	620
Issue number	2 II
DOIs	https://doi.org/10.1086/428832
State	Published - Feb 20 2005

Keywords

Infrared: stars
Stars: formation
Stars: pre-main-sequence

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/428832

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@article{6c97a948c2c5414c8f938984fd50d83a,

title = "The outburst of V1647 orionis revealed by spitzer",

abstract = "We present Spitzer Space Telescope observations of V1647 Ori, the outbursting source lighting McNeil's Nebula, taken near the optical peak of the outburst in early March 2004. The source is easily detected in all Spitzer imaging bands from 3.6 to 70 μm. The fluxes at all wavelengths are roughly a factor of 15 brighter than pre-outburst levels; we measure a bolometric luminosity of 44 L⊙. We posit that this event is due to an increase in the accretion luminosity of the source. Simple models of an accretion disk plus a tenuous envelope can qualitatively explain the observed pre- and post-outburst spectral energy distributions. The accretion activity implied by our results indicates that the outburst may be intermediate between FUor- and EXor-type events. We also report the discovery of a previously unknown mid-infrared counterpart to the nearby Herbig-Haro object HH 22.",

keywords = "Infrared: stars, Stars: formation, Stars: pre-main-sequence",

author = "J. Muzerolle and Megeath, {S. T.} and Flaherty, {K. M.} and Gordon, {K. D.} and Rieke, {G. H.} and Young, {E. T.} and Lada, {C. J.}",

year = "2005",

month = feb,

day = "20",

doi = "10.1086/428832",

language = "English (US)",

volume = "620",

pages = "L107--L110",

journal = "Astrophysical Journal",

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publisher = "American Astronomical Society",

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TY - JOUR

T1 - The outburst of V1647 orionis revealed by spitzer

AU - Muzerolle, J.

AU - Megeath, S. T.

AU - Flaherty, K. M.

AU - Gordon, K. D.

AU - Rieke, G. H.

AU - Young, E. T.

AU - Lada, C. J.

PY - 2005/2/20

Y1 - 2005/2/20

N2 - We present Spitzer Space Telescope observations of V1647 Ori, the outbursting source lighting McNeil's Nebula, taken near the optical peak of the outburst in early March 2004. The source is easily detected in all Spitzer imaging bands from 3.6 to 70 μm. The fluxes at all wavelengths are roughly a factor of 15 brighter than pre-outburst levels; we measure a bolometric luminosity of 44 L⊙. We posit that this event is due to an increase in the accretion luminosity of the source. Simple models of an accretion disk plus a tenuous envelope can qualitatively explain the observed pre- and post-outburst spectral energy distributions. The accretion activity implied by our results indicates that the outburst may be intermediate between FUor- and EXor-type events. We also report the discovery of a previously unknown mid-infrared counterpart to the nearby Herbig-Haro object HH 22.

AB - We present Spitzer Space Telescope observations of V1647 Ori, the outbursting source lighting McNeil's Nebula, taken near the optical peak of the outburst in early March 2004. The source is easily detected in all Spitzer imaging bands from 3.6 to 70 μm. The fluxes at all wavelengths are roughly a factor of 15 brighter than pre-outburst levels; we measure a bolometric luminosity of 44 L⊙. We posit that this event is due to an increase in the accretion luminosity of the source. Simple models of an accretion disk plus a tenuous envelope can qualitatively explain the observed pre- and post-outburst spectral energy distributions. The accretion activity implied by our results indicates that the outburst may be intermediate between FUor- and EXor-type events. We also report the discovery of a previously unknown mid-infrared counterpart to the nearby Herbig-Haro object HH 22.

KW - Infrared: stars

KW - Stars: formation

KW - Stars: pre-main-sequence

UR - http://www.scopus.com/inward/record.url?scp=17044395992&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17044395992&partnerID=8YFLogxK

U2 - 10.1086/428832

DO - 10.1086/428832

M3 - Article

AN - SCOPUS:17044395992

SN - 0004-637X

VL - 620

SP - L107-L110

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 II

ER -

The outburst of V1647 orionis revealed by spitzer

Abstract

Keywords

ASJC Scopus subject areas

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