Cold CO Gas in the Envelopes of FU Orionis-type Young Eruptive Stars

Kóspál, P. Ábrahám, T. Csengeri, Th Henning, A. Moór, R. Güsten

Research output: Article

6 Citations (Scopus)

Abstract

FU Orionis-type objects (FUors) are young stellar objects experiencing large optical outbursts due to highly enhanced accretion from the circumstellar disk onto the star. FUors are often surrounded by massive envelopes, which play a significant role in the outburst mechanism. Conversely, the subsequent eruptions might gradually clear up the obscuring envelope material and drive the protostar on its way to become a disk-only T Tauri star. Here we present an APEX 12CO and 13CO survey of eight southern and equatorial FUors. We measure the mass of the gaseous material surrounding our targets, locate the source of the CO emission, and derive physical parameters for the envelopes and outflows, where detected. Our results support the evolutionary scenario where FUors represent a transition phase from envelope-surrounded protostars to classical T Tauri stars.

Original languageEnglish
Article number226
JournalAstrophysical Journal
Volume836
Issue number2
DOIs
Publication statusPublished - febr. 20 2017

Fingerprint

cold gas
outburst
envelopes
stars
T Tauri stars
protostars
phase transition
gas
outflow
volcanic eruption
accretion
volcanic eruptions
cold
material
young
parameter

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Cold CO Gas in the Envelopes of FU Orionis-type Young Eruptive Stars. / Kóspál, ; Ábrahám, P.; Csengeri, T.; Henning, Th; Moór, A.; Güsten, R.

In: Astrophysical Journal, Vol. 836, No. 2, 226, 20.02.2017.

Research output: Article

Kóspál, ; Ábrahám, P. ; Csengeri, T. ; Henning, Th ; Moór, A. ; Güsten, R. / Cold CO Gas in the Envelopes of FU Orionis-type Young Eruptive Stars. In: Astrophysical Journal. 2017 ; Vol. 836, No. 2.
@article{740c402343434ae1b12b16bfd4f8f5fe,
title = "Cold CO Gas in the Envelopes of FU Orionis-type Young Eruptive Stars",
abstract = "FU Orionis-type objects (FUors) are young stellar objects experiencing large optical outbursts due to highly enhanced accretion from the circumstellar disk onto the star. FUors are often surrounded by massive envelopes, which play a significant role in the outburst mechanism. Conversely, the subsequent eruptions might gradually clear up the obscuring envelope material and drive the protostar on its way to become a disk-only T Tauri star. Here we present an APEX 12CO and 13CO survey of eight southern and equatorial FUors. We measure the mass of the gaseous material surrounding our targets, locate the source of the CO emission, and derive physical parameters for the envelopes and outflows, where detected. Our results support the evolutionary scenario where FUors represent a transition phase from envelope-surrounded protostars to classical T Tauri stars.",
keywords = "circumstellar matter, stars: pre-main sequence, stars: variables: T Tauri, Herbig Ae/Be",
author = "K{\'o}sp{\'a}l and P. {\'A}brah{\'a}m and T. Csengeri and Th Henning and A. Mo{\'o}r and R. G{\"u}sten",
year = "2017",
month = "2",
day = "20",
doi = "10.3847/1538-4357/836/2/226",
language = "English",
volume = "836",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",

}

TY - JOUR

T1 - Cold CO Gas in the Envelopes of FU Orionis-type Young Eruptive Stars

AU - Kóspál,

AU - Ábrahám, P.

AU - Csengeri, T.

AU - Henning, Th

AU - Moór, A.

AU - Güsten, R.

PY - 2017/2/20

Y1 - 2017/2/20

N2 - FU Orionis-type objects (FUors) are young stellar objects experiencing large optical outbursts due to highly enhanced accretion from the circumstellar disk onto the star. FUors are often surrounded by massive envelopes, which play a significant role in the outburst mechanism. Conversely, the subsequent eruptions might gradually clear up the obscuring envelope material and drive the protostar on its way to become a disk-only T Tauri star. Here we present an APEX 12CO and 13CO survey of eight southern and equatorial FUors. We measure the mass of the gaseous material surrounding our targets, locate the source of the CO emission, and derive physical parameters for the envelopes and outflows, where detected. Our results support the evolutionary scenario where FUors represent a transition phase from envelope-surrounded protostars to classical T Tauri stars.

AB - FU Orionis-type objects (FUors) are young stellar objects experiencing large optical outbursts due to highly enhanced accretion from the circumstellar disk onto the star. FUors are often surrounded by massive envelopes, which play a significant role in the outburst mechanism. Conversely, the subsequent eruptions might gradually clear up the obscuring envelope material and drive the protostar on its way to become a disk-only T Tauri star. Here we present an APEX 12CO and 13CO survey of eight southern and equatorial FUors. We measure the mass of the gaseous material surrounding our targets, locate the source of the CO emission, and derive physical parameters for the envelopes and outflows, where detected. Our results support the evolutionary scenario where FUors represent a transition phase from envelope-surrounded protostars to classical T Tauri stars.

KW - circumstellar matter

KW - stars: pre-main sequence

KW - stars: variables: T Tauri, Herbig Ae/Be

UR - http://www.scopus.com/inward/record.url?scp=85014175191&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85014175191&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/836/2/226

DO - 10.3847/1538-4357/836/2/226

M3 - Article

AN - SCOPUS:85014175191

VL - 836

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 226

ER -