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Astrochemical Properties of Planck Cold Clumps

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Astrochemical Properties of Planck Cold Clumps. / Tatematsu, Ken'ichi; Liu, Tie; Ohashi, Satoshi; Sanhueza, Patricio; Nguyen-Luong, Quang; Hirota, Tomoya; Liu, Sheng-Yuan; Hirano, Naomi; Choi, Minho; Kang, Miju; Thompson, Mark; Fuller, Garry; Wu, Yuefang; Francesco, James Di; Kim, Kee-Tae; Wang, Ke; Ristorcelli, Isabelle; Juvela, Mika; Shinnaga, Hiroko; Cunningham, Maria R.; Saito, Masao; Lee, Jeong-Eun; Toth, L. Viktor; He, Jinhua; Sakai, Takeshi; Kim, Jungha; collaboration, JCMT Large Program "SCOPE"; collaboration, TRAO Key Science Program "TOP".

In: Astrophysical Journal, Supplement Series, Vol. 228, No. 2, 01.03.2017.

Research output: Contribution to journalArticlepeer-review

Harvard

Tatematsu, K, Liu, T, Ohashi, S, Sanhueza, P, Nguyen-Luong, Q, Hirota, T, Liu, S-Y, Hirano, N, Choi, M, Kang, M, Thompson, M, Fuller, G, Wu, Y, Francesco, JD, Kim, K-T, Wang, K, Ristorcelli, I, Juvela, M, Shinnaga, H, Cunningham, MR, Saito, M, Lee, J-E, Toth, LV, He, J, Sakai, T, Kim, J, collaboration, JCMTLPSCOPE & collaboration, TRAOKSPTOP 2017, 'Astrochemical Properties of Planck Cold Clumps', Astrophysical Journal, Supplement Series, vol. 228, no. 2. https://doi.org/10.3847/1538-4365/228/2/12

APA

Tatematsu, K., Liu, T., Ohashi, S., Sanhueza, P., Nguyen-Luong, Q., Hirota, T., Liu, S-Y., Hirano, N., Choi, M., Kang, M., Thompson, M., Fuller, G., Wu, Y., Francesco, J. D., Kim, K-T., Wang, K., Ristorcelli, I., Juvela, M., Shinnaga, H., ... collaboration, TRAO. K. S. P. TOP. (2017). Astrochemical Properties of Planck Cold Clumps. Astrophysical Journal, Supplement Series, 228(2). https://doi.org/10.3847/1538-4365/228/2/12

Vancouver

Tatematsu K, Liu T, Ohashi S, Sanhueza P, Nguyen-Luong Q, Hirota T et al. Astrochemical Properties of Planck Cold Clumps. Astrophysical Journal, Supplement Series. 2017 Mar 1;228(2). https://doi.org/10.3847/1538-4365/228/2/12

Author

Tatematsu, Ken'ichi ; Liu, Tie ; Ohashi, Satoshi ; Sanhueza, Patricio ; Nguyen-Luong, Quang ; Hirota, Tomoya ; Liu, Sheng-Yuan ; Hirano, Naomi ; Choi, Minho ; Kang, Miju ; Thompson, Mark ; Fuller, Garry ; Wu, Yuefang ; Francesco, James Di ; Kim, Kee-Tae ; Wang, Ke ; Ristorcelli, Isabelle ; Juvela, Mika ; Shinnaga, Hiroko ; Cunningham, Maria R. ; Saito, Masao ; Lee, Jeong-Eun ; Toth, L. Viktor ; He, Jinhua ; Sakai, Takeshi ; Kim, Jungha ; collaboration, JCMT Large Program "SCOPE" ; collaboration, TRAO Key Science Program "TOP". / Astrochemical Properties of Planck Cold Clumps. In: Astrophysical Journal, Supplement Series. 2017 ; Vol. 228, No. 2.

Bibtex

@article{912db6b3c5ff4b3ba58dae2af5ca7566,
title = "Astrochemical Properties of Planck Cold Clumps",
abstract = "We observed thirteen Planck cold clumps with the James Clerk Maxwell Telescope/SCUBA-2 and with the Nobeyama 45 m radio telescope. The N$_2$H$^+$ distribution obtained with the Nobeyama telescope is quite similar to SCUBA-2 dust distribution. The 82 GHz HC$_3$N, 82 GHz CCS, and 94 GHz CCS emission are often distributed differently with respect to the N$_2$H$^+$ emission. The CCS emission, which is known to be abundant in starless molecular cloud cores, is often very clumpy in the observed targets. We made deep single-pointing observations in DNC, HN$^{13}$C, N$_2$D$^+$, cyclic-C$_3$H$_2$ toward nine clumps. The detection rate of N$_2$D$^+$ is 50\%. Furthermore, we observed the NH$_3$ emission toward 15 Planck cold clumps to estimate the kinetic temperature, and confirmed that most of targets are cold ($\lesssim$ 20 K). In two of the starless clumps observe, the CCS emission is distributed as it surrounds the N$_2$H$^+$ core (chemically evolved gas), which resembles the case of L1544, a prestellar core showing collapse. In addition, we detected both DNC and N$_2$D$^+$. These two clumps are most likely on the verge of star formation. We introduce the Chemical Evolution Factor (CEF) for starless cores to describe the chemical evolutionary stage, and analyze the observed Planck cold clumps.",
keywords = "astro-ph.GA",
author = "Ken'ichi Tatematsu and Tie Liu and Satoshi Ohashi and Patricio Sanhueza and Quang Nguyen-Luong and Tomoya Hirota and Sheng-Yuan Liu and Naomi Hirano and Minho Choi and Miju Kang and Mark Thompson and Garry Fuller and Yuefang Wu and Francesco, {James Di} and Kee-Tae Kim and Ke Wang and Isabelle Ristorcelli and Mika Juvela and Hiroko Shinnaga and Cunningham, {Maria R.} and Masao Saito and Jeong-Eun Lee and Toth, {L. Viktor} and Jinhua He and Takeshi Sakai and Jungha Kim and collaboration, {JCMT Large Program {"}SCOPE{"}} and collaboration, {TRAO Key Science Program {"}TOP{"}}",
note = "Ken{\textquoteright}ichi Tatematsu, et al, 'Astrochemical Properties of Planck Cold Clumps', The Astrophysical Journal Supplement Series, Vol. 228 (2), 20 pp, February 2017, doi:10.3847/1538-4365/228/2/12. {\textcopyright} 2017. The American Astronomical Society. All rights reserved.",
year = "2017",
month = mar,
day = "1",
doi = "10.3847/1538-4365/228/2/12",
language = "English",
volume = "228",
journal = "Astrophysical Journal, Supplement Series",
issn = "0067-0049",
publisher = "IOP Publishing Ltd.",
number = "2",

}

RIS

TY - JOUR

T1 - Astrochemical Properties of Planck Cold Clumps

AU - Tatematsu, Ken'ichi

AU - Liu, Tie

AU - Ohashi, Satoshi

AU - Sanhueza, Patricio

AU - Nguyen-Luong, Quang

AU - Hirota, Tomoya

AU - Liu, Sheng-Yuan

AU - Hirano, Naomi

AU - Choi, Minho

AU - Kang, Miju

AU - Thompson, Mark

AU - Fuller, Garry

AU - Wu, Yuefang

AU - Francesco, James Di

AU - Kim, Kee-Tae

AU - Wang, Ke

AU - Ristorcelli, Isabelle

AU - Juvela, Mika

AU - Shinnaga, Hiroko

AU - Cunningham, Maria R.

AU - Saito, Masao

AU - Lee, Jeong-Eun

AU - Toth, L. Viktor

AU - He, Jinhua

AU - Sakai, Takeshi

AU - Kim, Jungha

AU - collaboration, JCMT Large Program "SCOPE"

AU - collaboration, TRAO Key Science Program "TOP"

N1 - Ken’ichi Tatematsu, et al, 'Astrochemical Properties of Planck Cold Clumps', The Astrophysical Journal Supplement Series, Vol. 228 (2), 20 pp, February 2017, doi:10.3847/1538-4365/228/2/12. © 2017. The American Astronomical Society. All rights reserved.

PY - 2017/3/1

Y1 - 2017/3/1

N2 - We observed thirteen Planck cold clumps with the James Clerk Maxwell Telescope/SCUBA-2 and with the Nobeyama 45 m radio telescope. The N$_2$H$^+$ distribution obtained with the Nobeyama telescope is quite similar to SCUBA-2 dust distribution. The 82 GHz HC$_3$N, 82 GHz CCS, and 94 GHz CCS emission are often distributed differently with respect to the N$_2$H$^+$ emission. The CCS emission, which is known to be abundant in starless molecular cloud cores, is often very clumpy in the observed targets. We made deep single-pointing observations in DNC, HN$^{13}$C, N$_2$D$^+$, cyclic-C$_3$H$_2$ toward nine clumps. The detection rate of N$_2$D$^+$ is 50\%. Furthermore, we observed the NH$_3$ emission toward 15 Planck cold clumps to estimate the kinetic temperature, and confirmed that most of targets are cold ($\lesssim$ 20 K). In two of the starless clumps observe, the CCS emission is distributed as it surrounds the N$_2$H$^+$ core (chemically evolved gas), which resembles the case of L1544, a prestellar core showing collapse. In addition, we detected both DNC and N$_2$D$^+$. These two clumps are most likely on the verge of star formation. We introduce the Chemical Evolution Factor (CEF) for starless cores to describe the chemical evolutionary stage, and analyze the observed Planck cold clumps.

AB - We observed thirteen Planck cold clumps with the James Clerk Maxwell Telescope/SCUBA-2 and with the Nobeyama 45 m radio telescope. The N$_2$H$^+$ distribution obtained with the Nobeyama telescope is quite similar to SCUBA-2 dust distribution. The 82 GHz HC$_3$N, 82 GHz CCS, and 94 GHz CCS emission are often distributed differently with respect to the N$_2$H$^+$ emission. The CCS emission, which is known to be abundant in starless molecular cloud cores, is often very clumpy in the observed targets. We made deep single-pointing observations in DNC, HN$^{13}$C, N$_2$D$^+$, cyclic-C$_3$H$_2$ toward nine clumps. The detection rate of N$_2$D$^+$ is 50\%. Furthermore, we observed the NH$_3$ emission toward 15 Planck cold clumps to estimate the kinetic temperature, and confirmed that most of targets are cold ($\lesssim$ 20 K). In two of the starless clumps observe, the CCS emission is distributed as it surrounds the N$_2$H$^+$ core (chemically evolved gas), which resembles the case of L1544, a prestellar core showing collapse. In addition, we detected both DNC and N$_2$D$^+$. These two clumps are most likely on the verge of star formation. We introduce the Chemical Evolution Factor (CEF) for starless cores to describe the chemical evolutionary stage, and analyze the observed Planck cold clumps.

KW - astro-ph.GA

U2 - 10.3847/1538-4365/228/2/12

DO - 10.3847/1538-4365/228/2/12

M3 - Article

VL - 228

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

SN - 0067-0049

IS - 2

ER -