Low-mass young stars in Cep OB2: Ages, distribution and accretion disks

A Sicilia-Aguilar; L Hartmann; C Briceno; ME Contreras; J Muzerolle; N Calvet

Low-mass young stars in Cep OB2: Ages, distribution and accretion disks

A Sicilia-Aguilar^*, L Hartmann, C Briceno, ME Contreras, J Muzerolle, N Calvet

^*Corresponding author for this work

School of Physics and Astronomy

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

1 Citation (Scopus)

Abstract

We are studying the young clusters Tr37 and NGC7160 in the Cep OB2 region as part of a program to understand the evolution of accretion disks at the ages of disk dissipation and planet formation. Here, we present the first identifications of low mass ( spectral types K-M) members of the clusters and study the presence and characteristics of their accretion disks, finding evidences of disk evolution. Using optical photometry and spectroscopy, we have identified similar to 70 members in Tr37 and similar to 20 in NGC7160, confirming age estimates of 3 and 10 Myr respectively. Accretion rates are similar to 10(-8)M(.) yr(-1) in Tr37. We have not found any accreting members in NGC7160, suggesting that disk accretion generally ends before the age of 10 Myr, which is consistent with the results from other populations.

Original language	English
Pages (from-to)	457-463
Number of pages	7
Journal	Astrophysics and Space Science
Volume	292
Issue number	1-4
Publication status	Published - 2004
Event	International Workshop on Magnetic Fields and Star Foramtion - Madrid, Spain Duration: 21 Apr 2003 → 25 Apr 2003

Keywords

T Tauri stars
accretion disks
disk evolution
protoplanetary disk
planet formation
star formation
CEPHEUS BUBBLE
EVOLUTION
KINEMATICS

Cite this

@article{4ea0e6558dff470fa46c7171ef7194bc,

title = "Low-mass young stars in Cep OB2: Ages, distribution and accretion disks",

abstract = "We are studying the young clusters Tr37 and NGC7160 in the Cep OB2 region as part of a program to understand the evolution of accretion disks at the ages of disk dissipation and planet formation. Here, we present the first identifications of low mass ( spectral types K-M) members of the clusters and study the presence and characteristics of their accretion disks, finding evidences of disk evolution. Using optical photometry and spectroscopy, we have identified similar to 70 members in Tr37 and similar to 20 in NGC7160, confirming age estimates of 3 and 10 Myr respectively. Accretion rates are similar to 10(-8)M(.) yr(-1) in Tr37. We have not found any accreting members in NGC7160, suggesting that disk accretion generally ends before the age of 10 Myr, which is consistent with the results from other populations.",

keywords = "T Tauri stars, accretion disks, disk evolution, protoplanetary disk, planet formation, star formation, CEPHEUS BUBBLE, EVOLUTION, KINEMATICS",

author = "A Sicilia-Aguilar and L Hartmann and C Briceno and ME Contreras and J Muzerolle and N Calvet",

year = "2004",

language = "English",

volume = "292",

pages = "457--463",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Springer",

number = "1-4",

note = "International Workshop on Magnetic Fields and Star Foramtion ; Conference date: 21-04-2003 Through 25-04-2003",

}

TY - JOUR

T1 - Low-mass young stars in Cep OB2: Ages, distribution and accretion disks

AU - Sicilia-Aguilar, A

AU - Hartmann, L

AU - Briceno, C

AU - Contreras, ME

AU - Muzerolle, J

AU - Calvet, N

PY - 2004

Y1 - 2004

N2 - We are studying the young clusters Tr37 and NGC7160 in the Cep OB2 region as part of a program to understand the evolution of accretion disks at the ages of disk dissipation and planet formation. Here, we present the first identifications of low mass ( spectral types K-M) members of the clusters and study the presence and characteristics of their accretion disks, finding evidences of disk evolution. Using optical photometry and spectroscopy, we have identified similar to 70 members in Tr37 and similar to 20 in NGC7160, confirming age estimates of 3 and 10 Myr respectively. Accretion rates are similar to 10(-8)M(.) yr(-1) in Tr37. We have not found any accreting members in NGC7160, suggesting that disk accretion generally ends before the age of 10 Myr, which is consistent with the results from other populations.

AB - We are studying the young clusters Tr37 and NGC7160 in the Cep OB2 region as part of a program to understand the evolution of accretion disks at the ages of disk dissipation and planet formation. Here, we present the first identifications of low mass ( spectral types K-M) members of the clusters and study the presence and characteristics of their accretion disks, finding evidences of disk evolution. Using optical photometry and spectroscopy, we have identified similar to 70 members in Tr37 and similar to 20 in NGC7160, confirming age estimates of 3 and 10 Myr respectively. Accretion rates are similar to 10(-8)M(.) yr(-1) in Tr37. We have not found any accreting members in NGC7160, suggesting that disk accretion generally ends before the age of 10 Myr, which is consistent with the results from other populations.

KW - T Tauri stars

KW - accretion disks

KW - disk evolution

KW - protoplanetary disk

KW - planet formation

KW - star formation

KW - CEPHEUS BUBBLE

KW - EVOLUTION

KW - KINEMATICS

M3 - Article

SN - 0004-640X

VL - 292

SP - 457

EP - 463

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

IS - 1-4

T2 - International Workshop on Magnetic Fields and Star Foramtion

Y2 - 21 April 2003 through 25 April 2003

ER -

Low-mass young stars in Cep OB2: Ages, distribution and accretion disks

Abstract

Keywords

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