Observations of the IR recombination line emission from massive young stellar objects

J.C. Bunn; M.G. Hoare; J.E. Drew

Observations of the IR recombination line emission from massive young stellar objects

J.C. Bunn, M.G. Hoare, J.E. Drew

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

Abstract

We present new, high-resolution observations of the infrared H I emission lines of massive YSOs. The widths of the Br alpha, Brgamma and Pfgamma lines indicate outflowing material with velocities of 100-200 km s^-1 for all the sources observed. We discuss the morphology of the line profiles and examine the velocity-resolved line ratios. Three of the sources appear to be dominated by an expanding optically thick stellar wind, whilst BN shows some evidence for an additional narrow, more optically thin component, as we found previously for S106IR. The object M17 SW IRS1 has line profiles more like those of a Herbig Be star.

Original language	English
Pages (from-to)	346-354
Journal	Monthly Notices of the Royal Astronomical Society
Volume	272
Issue number	2
Publication status	Published - 1995

Keywords

jets and outflows
Becklin-Neugebauer object

Cite this

@article{0d4e2897ea184b08a92b7d9d8b422f23,

title = "Observations of the IR recombination line emission from massive young stellar objects",

abstract = "We present new, high-resolution observations of the infrared H I emission lines of massive YSOs. The widths of the Br alpha, Brgamma and Pfgamma lines indicate outflowing material with velocities of 100-200 km s^-1 for all the sources observed. We discuss the morphology of the line profiles and examine the velocity-resolved line ratios. Three of the sources appear to be dominated by an expanding optically thick stellar wind, whilst BN shows some evidence for an additional narrow, more optically thin component, as we found previously for S106IR. The object M17 SW IRS1 has line profiles more like those of a Herbig Be star.",

keywords = "jets and outflows, Becklin-Neugebauer object",

author = "J.C. Bunn and M.G. Hoare and J.E. Drew",

note = "Original article can be found at: http://adsabs.harvard.edu/basic_search.html Copyright Royal Astronomical Society [Full text of this article is not available in the UHRA]",

year = "1995",

language = "English",

volume = "272",

pages = "346--354",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press (OUP)",

number = "2",

}

TY - JOUR

T1 - Observations of the IR recombination line emission from massive young stellar objects

AU - Bunn, J.C.

AU - Hoare, M.G.

AU - Drew, J.E.

N1 - Original article can be found at: http://adsabs.harvard.edu/basic_search.html Copyright Royal Astronomical Society [Full text of this article is not available in the UHRA]

PY - 1995

Y1 - 1995

N2 - We present new, high-resolution observations of the infrared H I emission lines of massive YSOs. The widths of the Br alpha, Brgamma and Pfgamma lines indicate outflowing material with velocities of 100-200 km s^-1 for all the sources observed. We discuss the morphology of the line profiles and examine the velocity-resolved line ratios. Three of the sources appear to be dominated by an expanding optically thick stellar wind, whilst BN shows some evidence for an additional narrow, more optically thin component, as we found previously for S106IR. The object M17 SW IRS1 has line profiles more like those of a Herbig Be star.

AB - We present new, high-resolution observations of the infrared H I emission lines of massive YSOs. The widths of the Br alpha, Brgamma and Pfgamma lines indicate outflowing material with velocities of 100-200 km s^-1 for all the sources observed. We discuss the morphology of the line profiles and examine the velocity-resolved line ratios. Three of the sources appear to be dominated by an expanding optically thick stellar wind, whilst BN shows some evidence for an additional narrow, more optically thin component, as we found previously for S106IR. The object M17 SW IRS1 has line profiles more like those of a Herbig Be star.

KW - jets and outflows

KW - Becklin-Neugebauer object

M3 - Article

SN - 0035-8711

VL - 272

SP - 346

EP - 354

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Observations of the IR recombination line emission from massive young stellar objects

Abstract

Keywords

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