PROTOSTARS AND STARS IN THE CORONET CLUSTER: AGE, EVOLUTION, AND CLUSTER STRUCTURE

Aurora Sicilia-Aguilar; Thomas Henning; Jouni Kainulainen; Veronica Roccatagliata

doi:10.1088/0004-637X/736/2/137

PROTOSTARS AND STARS IN THE CORONET CLUSTER: AGE, EVOLUTION, AND CLUSTER STRUCTURE

Aurora Sicilia-Aguilar^*, Thomas Henning, Jouni Kainulainen, Veronica Roccatagliata

^*Corresponding author for this work

School of Physics and Astronomy

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

29 Citations (Scopus)

Abstract

We present new optical spectroscopy with the FLAMES spectrograph at the Very Large Telescope (VLT), near-IR imaging with VLT/HAWK-I, and 870 mu m mapping with APEX/LABOCA of the Coronet cluster. The optical data allow us to estimate spectral types, extinction, and the presence of accretion in 6 more M-type members, in addition to the 12 that we had previously studied. The submillimeter maps and near-IR data reveal the presence of nebular structures and high extinction regions, which are in some cases associated to known IR, optical, and X-ray sources. Most star formation is associated to two elongated structures crossing in the central part of the cluster. Placing all the 18 objects with known spectral types and extinction in an H-R diagram suggests that the cluster is younger than previously thought (

Original language	English
Article number	137
Number of pages	13
Journal	Astrophysical Journal
Volume	736
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/736/2/137
Publication status	Published - 1 Aug 2011

Keywords

protoplanetary disks
stars: formation
stars: late-type
stars: pre-main sequence
X-RAY SOURCES
AUSTRALIS MOLECULAR CLOUD
SPITZER-SPACE-TELESCOPE
CRA DARK CLOUD
LOW-MASS STARS
FORMING REGIONS
DISK EVOLUTION
INFRARED OBSERVATIONS
SOLAR NEIGHBORHOOD
BROWN DWARFS

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@article{e3f3f50060d54c85b1d5836be5a6ba69,

title = "PROTOSTARS AND STARS IN THE CORONET CLUSTER: AGE, EVOLUTION, AND CLUSTER STRUCTURE",

abstract = "We present new optical spectroscopy with the FLAMES spectrograph at the Very Large Telescope (VLT), near-IR imaging with VLT/HAWK-I, and 870 mu m mapping with APEX/LABOCA of the Coronet cluster. The optical data allow us to estimate spectral types, extinction, and the presence of accretion in 6 more M-type members, in addition to the 12 that we had previously studied. The submillimeter maps and near-IR data reveal the presence of nebular structures and high extinction regions, which are in some cases associated to known IR, optical, and X-ray sources. Most star formation is associated to two elongated structures crossing in the central part of the cluster. Placing all the 18 objects with known spectral types and extinction in an H-R diagram suggests that the cluster is younger than previously thought (",

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author = "Aurora Sicilia-Aguilar and Thomas Henning and Jouni Kainulainen and Veronica Roccatagliata",

year = "2011",

month = aug,

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doi = "10.1088/0004-637X/736/2/137",

language = "English",

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journal = "Astrophysical Journal",

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TY - JOUR

T1 - PROTOSTARS AND STARS IN THE CORONET CLUSTER: AGE, EVOLUTION, AND CLUSTER STRUCTURE

AU - Sicilia-Aguilar, Aurora

AU - Henning, Thomas

AU - Kainulainen, Jouni

AU - Roccatagliata, Veronica

PY - 2011/8/1

Y1 - 2011/8/1

N2 - We present new optical spectroscopy with the FLAMES spectrograph at the Very Large Telescope (VLT), near-IR imaging with VLT/HAWK-I, and 870 mu m mapping with APEX/LABOCA of the Coronet cluster. The optical data allow us to estimate spectral types, extinction, and the presence of accretion in 6 more M-type members, in addition to the 12 that we had previously studied. The submillimeter maps and near-IR data reveal the presence of nebular structures and high extinction regions, which are in some cases associated to known IR, optical, and X-ray sources. Most star formation is associated to two elongated structures crossing in the central part of the cluster. Placing all the 18 objects with known spectral types and extinction in an H-R diagram suggests that the cluster is younger than previously thought (

AB - We present new optical spectroscopy with the FLAMES spectrograph at the Very Large Telescope (VLT), near-IR imaging with VLT/HAWK-I, and 870 mu m mapping with APEX/LABOCA of the Coronet cluster. The optical data allow us to estimate spectral types, extinction, and the presence of accretion in 6 more M-type members, in addition to the 12 that we had previously studied. The submillimeter maps and near-IR data reveal the presence of nebular structures and high extinction regions, which are in some cases associated to known IR, optical, and X-ray sources. Most star formation is associated to two elongated structures crossing in the central part of the cluster. Placing all the 18 objects with known spectral types and extinction in an H-R diagram suggests that the cluster is younger than previously thought (

KW - protoplanetary disks

KW - stars: formation

KW - stars: late-type

KW - stars: pre-main sequence

KW - X-RAY SOURCES

KW - AUSTRALIS MOLECULAR CLOUD

KW - SPITZER-SPACE-TELESCOPE

KW - CRA DARK CLOUD

KW - LOW-MASS STARS

KW - FORMING REGIONS

KW - DISK EVOLUTION

KW - INFRARED OBSERVATIONS

KW - SOLAR NEIGHBORHOOD

KW - BROWN DWARFS

U2 - 10.1088/0004-637X/736/2/137

DO - 10.1088/0004-637X/736/2/137

M3 - Article

SN - 0004-637X

VL - 736

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 137

ER -

PROTOSTARS AND STARS IN THE CORONET CLUSTER: AGE, EVOLUTION, AND CLUSTER STRUCTURE

Abstract

Keywords

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