Episodic accretion in focus: Revealing the environment of FU Orionis-type stars
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Episodic accretion in focus : Revealing the environment of FU Orionis-type stars. / Fehér, O.; Kóspál; Ábrahám, P.; Hogerheijde, M. R.; Brinch, Ch; Semenov, D.; Elmegreen, Bruce G.; Tóth, L. Viktor; Güdel, Manuel.
I: Proceedings of the International Astronomical Union, Bind 359, 13.01.2020, s. 87-90.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Episodic accretion in focus
T2 - Revealing the environment of FU Orionis-type stars
AU - Fehér, O.
AU - Kóspál, null
AU - Ábrahám, P.
AU - Hogerheijde, M. R.
AU - Brinch, Ch
AU - Semenov, D.
AU - Elmegreen, Bruce G.
AU - Tóth, L. Viktor
AU - Güdel, Manuel
N1 - Publisher Copyright: © 2020 International Astronomical Union.
PY - 2020/1/13
Y1 - 2020/1/13
N2 - The earliest phases of star formation are characterised by intense mass accretion from the circumstellar disk to the central star. One group of young stellar objects, the FU Orionis-type stars exhibit accretion rate peaks accompanied by bright eruptions. The occurance of these outbursts might solve the luminosity problem of protostars, play a key role in accumulating the final star mass, and have a significant effect on the parameters of the envelope and the disk. In the framework of the Structured Accretion Disks ERC project, we are conducting a systematic investigation of these sources with millimeter interferometry to examine whether they represent normal young stars in exceptional times or they are unusual objects. Our results show that FU Orionis-type stars can be similar to both Class I and Class II systems and may be in a special evolutionary phase between the two classes with their infall-driven episodic eruptions being the main driving force of the transition.
AB - The earliest phases of star formation are characterised by intense mass accretion from the circumstellar disk to the central star. One group of young stellar objects, the FU Orionis-type stars exhibit accretion rate peaks accompanied by bright eruptions. The occurance of these outbursts might solve the luminosity problem of protostars, play a key role in accumulating the final star mass, and have a significant effect on the parameters of the envelope and the disk. In the framework of the Structured Accretion Disks ERC project, we are conducting a systematic investigation of these sources with millimeter interferometry to examine whether they represent normal young stars in exceptional times or they are unusual objects. Our results show that FU Orionis-type stars can be similar to both Class I and Class II systems and may be in a special evolutionary phase between the two classes with their infall-driven episodic eruptions being the main driving force of the transition.
KW - circumstellar matter
KW - molecular data
KW - stars: Pre-main-sequence
U2 - 10.1017/S1743921319002060
DO - 10.1017/S1743921319002060
M3 - Journal article
AN - SCOPUS:85077859319
VL - 359
SP - 87
EP - 90
JO - Proceedings of the International Astronomical Union
JF - Proceedings of the International Astronomical Union
SN - 1743-9213
ER -
ID: 269667994