Vibrationally excited CS: A new probe of conditions in young protostellar systems

Christopher K. Walker; Philip R. Maloney; E. Serabyn

doi:10.1086/187699

Vibrationally excited CS: A new probe of conditions in young protostellar systems

Christopher K. Walker, Philip R. Maloney, E. Serabyn

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11 Scopus citations

Abstract

We present the first detection of vibrationally excited C³²S J = 10 → 9 and J = 7 → 6 emission toward a young stellar object. Toward IRAS 16293-2422, the vibrationally excited C³²S emission is redshifted ∼3.9 km s^-1 from the systemic velocity of the core. The emission must arise in warm (T ≳ 1000 K), dense (n ≳ 10¹¹-10¹² cm^-3) gas. The most plausible origin for the emission appears to be self-gravitating instabilities in a protostellar accretion disk, which produce waves and shocks.

Original language	English (US)
Pages (from-to)	L127-L130
Journal	Astrophysical Journal
Volume	437
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/187699
State	Published - Dec 20 1994

Keywords

Binaries: general
Stars: individual (IRAS 16293-2422)
Stars: pre-main-sequence

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/187699

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@article{8d4630c6ae65431591b310295a1b91d3,

title = "Vibrationally excited CS: A new probe of conditions in young protostellar systems",

abstract = "We present the first detection of vibrationally excited C32S J = 10 → 9 and J = 7 → 6 emission toward a young stellar object. Toward IRAS 16293-2422, the vibrationally excited C32S emission is redshifted ∼3.9 km s-1 from the systemic velocity of the core. The emission must arise in warm (T ≳ 1000 K), dense (n ≳ 1011-1012 cm-3) gas. The most plausible origin for the emission appears to be self-gravitating instabilities in a protostellar accretion disk, which produce waves and shocks.",

keywords = "Binaries: general, Stars: individual (IRAS 16293-2422), Stars: pre-main-sequence",

author = "Walker, {Christopher K.} and Maloney, {Philip R.} and E. Serabyn",

year = "1994",

month = dec,

day = "20",

doi = "10.1086/187699",

language = "English (US)",

volume = "437",

pages = "L127--L130",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

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}

TY - JOUR

T1 - Vibrationally excited CS

T2 - A new probe of conditions in young protostellar systems

AU - Walker, Christopher K.

AU - Maloney, Philip R.

AU - Serabyn, E.

PY - 1994/12/20

Y1 - 1994/12/20

N2 - We present the first detection of vibrationally excited C32S J = 10 → 9 and J = 7 → 6 emission toward a young stellar object. Toward IRAS 16293-2422, the vibrationally excited C32S emission is redshifted ∼3.9 km s-1 from the systemic velocity of the core. The emission must arise in warm (T ≳ 1000 K), dense (n ≳ 1011-1012 cm-3) gas. The most plausible origin for the emission appears to be self-gravitating instabilities in a protostellar accretion disk, which produce waves and shocks.

AB - We present the first detection of vibrationally excited C32S J = 10 → 9 and J = 7 → 6 emission toward a young stellar object. Toward IRAS 16293-2422, the vibrationally excited C32S emission is redshifted ∼3.9 km s-1 from the systemic velocity of the core. The emission must arise in warm (T ≳ 1000 K), dense (n ≳ 1011-1012 cm-3) gas. The most plausible origin for the emission appears to be self-gravitating instabilities in a protostellar accretion disk, which produce waves and shocks.

KW - Binaries: general

KW - Stars: individual (IRAS 16293-2422)

KW - Stars: pre-main-sequence

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U2 - 10.1086/187699

DO - 10.1086/187699

M3 - Article

AN - SCOPUS:3943110195

SN - 0004-637X

VL - 437

SP - L127-L130

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

Vibrationally excited CS: A new probe of conditions in young protostellar systems

Abstract

Keywords

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