IAR   05382
INSTITUTO ARGENTINO DE RADIOASTRONOMIA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Dendrogram Analysis of Large-Area CARMA Images in Perseus: the Dense Gas in NGC 1333, Barnard 1, and L1451
Autor/es:
S. STORM; L.G. MUNDY; P.J. TEUBEN; K. LEE; L. LOONEY; MANUEL FERNANDEZ LOPEZ; CLASSY COLABORATION
Reunión:
Congreso; American Astronomical Society, AAS Meeting #223; 2014
Resumen:
We present spectral line maps of the dense gas across 400 square
arcminutes of the Perseus Molecular Cloud, focused on NGC 1333, Barnard
1, and L1451. We constructed these maps as part of the CARMA Large Area
Star-formation Survey (CLASSy), which is a CARMA key project that
connects star forming cores to their natal cloud environment. This is
achieved by leveraging CARMA's high angular resolution, imaging
capability, and high efficiency at mosaicing large areas of the sky.
CLASSy maps capture the structure and kinematics of N2H+, HCN, and HCO+
J=1-0 emission from thousand AU to parsec scales in three evolutionarily
distinct regions of Perseus (in addition to two regions in Serpens). We
show results from a non-binary dendrogram analysis of the Perseus N2H+
emission, which answers questions about the turbulent properties of the
dense gas across evolutionary stages and across the range of size scales
probed by CLASSy. There is a flat relation between mean internal
turbulence and structure size for the dense gas in NGC 1333 and Barnard
1, but the magnitude of internal turbulence increases with nearby
protostellar activity; the dense gas in the B1 main core and NGC 1333,
which have active young stars, are characterized by mostly transonic to
supersonic turbulence, while the filaments and clumps southwest of the
B1 main core, which have no active young stars, have mostly subsonic
turbulence. We have recently completed the observations of L1451, and
results for that region will be revealed at the meeting. Released CLASSy
data products can be found on our project website.
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Afrikaans
Albanian
Arabic
Armenian
Azerbaijani
Basque
Belarusian
Bulgarian
Catalan
Chinese (Simplified)
Chinese (Traditional)
Croatian
Czech
Danish
Dutch
English
Estonian
Filipino
Finnish
French
Galician
Georgian
German
Greek
Haitian Creole
Hebrew
Hindi
Hungarian
Icelandic
Indonesian
Irish
Italian
Japanese
Korean
Latin
Latvian
Lithuanian
Macedonian
Malay
Maltese
Norwegian
Persian
Polish
Portuguese
Romanian
Russian
Serbian
Slovak
Slovenian
Spanish
Swahili
Swedish
Thai
Turkish
Ukrainian
Urdu
Vietnamese
Welsh
Yiddish
English (auto-detected) » Spanish