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1. SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution - Survey Description and Compact Source Catalogue

Author

Eden, D. J., Liu, Tie, Kim, Kee-Tae, Liu, S. -Y., Tatematsu, K., Di Francesco, J., Wang, K., Wu, Y., Thompson, M. A., Fuller, G. A., Li, Di, Ristorcelli, I., Kang, Sung-ju, Hirano, N., Johnstone, D., Lin, Y., He, J. H., Koch, P. M., Sanhueza, Patricio, Qin, S. -L., Zhang, Q., Goldsmith, P. F., Evans II, N. J., Yuan, J., Zhang, C. -P., White, G. J., Choi, Minho, Lee, Chang Won, Toth, L. V., Mairs, S., Yi, H. -W., Tang, M., Soam, A., Peretto, N., Samal, M. R., Fich, M., Parsons, H., Malinen, J., Bendo, G. J., Rivera-Ingraham, A., Liu, H. -L., Wouterloot, J., Li, P. S., Qian, L., Rawlings, J., Rawlings, M. G., Feng, S., Wang, B., Li, Dalei, Liu, M., Luo, G., Marston, A. P., Pattle, K. M., Pelkonen, V. -M., Rigby, A. J., Zahorecz, S., Zhang, G., Bogner, R., Aikawa, Y., Akhter, S., Alina, D., Bell, G., Bernard, J. -P., Blain, A., Bronfman, L., Byun, D. -Y., Chapman, S., Chen, H. -R., Chen, M., Chen, W. -P., Chen, X., Chen, Xuepeng, Chrysostomou, A., Chu, Y. -H., Chung, E. J., Cornu, D., Cosentino, G., Cunningham, M. R., Demyk, K., Drabek-Maunder, E., Doi, Y., Eswaraiah, C., Falgarone, E., Feher, O., Fraser, H., Friberg, P., Garay, G., Ge, J. X., Gear, W. K., Greaves, J., Guan, X., Harvey-Smith, L., Hasegawa, T., He, Y., Henkel, C., Hirota, T., Holland, W., Hughes, A., Jarken, E., Ji, T. -G., Jimenez-Serra, I., Kang, Miju, Kawabata, K. S., Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, S., Koo, B. -C., Kwon, Woojin, Kuan, Y. -J., Lacaille, K. M., Lai, S. -P., Lee, C. F., Lee, J. E., Lee, Y. -U., Li, H., Lo, N., Lopez, J. A. P., Lu, X., Lyo, A. -R., Mardones, D., McGehee, P., Meng, F., Montier, L., Montillaud, J., Moore, T. J. T., Morata, O., Moriarty-Schieven, G. H., Ohashi, S., Pak, S., Park, Geumsook, Paladini, R., Pech, G., Qiu, K., Ren, Z. -Y., Richer, J., Sakai, T., Shang, H., Shinnaga, H., Stamatellos, D., Tang, Y. -W., Traficante, A., Vastel, C., Viti, S., Walsh, A., Wang, H., Wang, J., Ward-Thompson, D., Whitworth, A., Wilson, C. D., Xu, Y., Yang, J., Yuan, Y. -L., Yuan, L., Zavagno, A., Zhang, C., Zhang, H. -W., Zhou, C., Zhu, J. Zhou. L., and Zuo, P.

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

We present the first release of the data and compact-source catalogue for the JCMT Large Program SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE). SCOPE consists of 850-um continuum observations of 1235 Planck Galactic Cold Clumps (PGCCs) made with the Submillimetre Common-User Bolometer Array 2 on the James Clerk Maxwell Telescope. These data are at an angular resolution of 14.4 arcsec, significantly improving upon the 353-GHz resolution of Planck at 5 arcmin, and allowing for a catalogue of 3528 compact sources in 558 PGCCs. We find that the detected PGCCs have significant sub-structure, with 61 per cent of detected PGCCs having 3 or more compact sources, with filamentary structure also prevalent within the sample. A detection rate of 45 per cent is found across the survey, which is 95 per cent complete to Planck column densities of $N_{H_{2}}$ $>$ 5 $\times$ 10$^{21}$ cm$^{-2}$. By positionally associating the SCOPE compact sources with YSOs, the star formation efficiency, as measured by the ratio of luminosity to mass, in nearby clouds is found to be similar to that in the more distant Galactic Plane, with the column density distributions also indistinguishable from each other., Comment: 16 pages, 13 figures, 1 table. Accepted for publication in MNRAS

Published
2019
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2. SCUBA-2 Continuum Observations of Pre-protostellar Evolution - survey description and compact source catalogue

Author

Eden, D. J., Liu, Tie, Kim, Kee-Tae, Juvela, M., Liu, S. -Y., Tatematsu, K., Di Francesco, J., Wang, K., Wu, Y., Thompson, M. A., Fuller, G. A., Li, Di, Ristorcelli, I., Kang, Sung-ju, Hirano, N., Johnstone, D., Lin, Y., He, J. H., Koch, P. M., Sanhueza, Patricio, Qin, S. -L., Zhang, Q., Goldsmith, P. F., Evans, N. J., Yuan, J., Zhang, C. -P., White, G. J., Choi, Minho, Lee, Chang Won, Toth, L. V., Mairs, S., Yi, H. -W., Tang, M., Soam, A., Peretto, N., Samal, M. R., Fich, M., Parsons, H., Malinen, J., Bendo, G. J., Rivera-Ingraham, A., Liu, H. -L., Wouterloot, J., Li, P. S., Qian, L., Rawlings, J., Rawlings, M. G., Feng, S., Wang, B., Li, Dalei, Liu, M., Luo, G., Marston, A. P., Pattle, K. M., Pelkonen, V. -M., Rigby, A. J., Zahorecz, S., Zhang, G., Bogner, R., Aikawa, Y., Akhter, S., Alina, D., Bell, G., Bernard, J. -P., Blain, A., Bronfman, L., Byun, D. -Y., Chapman, S., Chen, H. -R., Chen, M., Chen, W. -P., Chen, X., Chen, Xuepeng, Chrysostomou, A., Chu, Y. -H., Chung, E. J., Cornu, D., Cosentino, G., Cunningham, M. R., Demyk, K., Drabek-Maunder, E., Doi, Y., Eswaraiah, C., Falgarone, E., Feher, O., Fraser, H., Friberg, P., Garay, G., Ge, J. X., Gear, W. K., Greaves, J., Guan, X., Harvey-Smith, L., Hasegawa, T., He, Y., Henkel, C., Hirota, T., Holland, W., Hughes, A., Jarken, E., Ji, T. -G., Jimenez-Serra, I., Kang, M., Kawabata, K. S., Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, S., Koo, B. -C., Kwon, Woojin, Kuan, Y. -J., Lacaille, K. M., Lai, S. -P., Lee, C. F., Lee, J. -E., Lee, Y. -U., Li, H., Lo, N., Lopez, J. A. P., Lu, X., Lyo, A. -R., Mardones, D., McGehee, P., Meng, F., Montier, L., Montillaud, J., Moore, T. J. T., Morata, O., Moriarty-Schieven, G. H., Ohashi, S., Pak, S., Park, Geumsook, Paladini, R., Pech, G., Qiu, K., Ren, Z. -Y., Richer, J., Sakai, T., Shang, H., Shinnaga, H., Stamatellos, D., Tang, Y. -W., Traficante, A., Vastel, C., Viti, S., Walsh, A., Wang, H., Wang, J., Ward-Thompson, D., Whitworth, A., Wilson, C. D., Xu, Y., Yang, J., Yuan, Y. -L., Yuan, L., Zavagno, A., Zhang, C., Zhang, H. -W., Zhou, C., Zhou, J., Zhu, L., Zuo, P., University of Helsinki, Department of Physics, and University of Helsinki, Particle Physics and Astrophysics

Subjects
LEGACY SURVEY, stars: formation, ATLASGAL, SPIRAL ARMS, 115 Astronomy, Space science, ISM: clouds, CLOUD, STAR-FORMATION, submillimetre: ISM, CLUMP IDENTIFICATION, surveys, GAS, MILKY-WAY, COMPLETE SAMPLE, GOULD BELT SURVEY
Abstract

We present the first release of the data and compact-source catalogue for the JCMT Large Program SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE). SCOPE consists of 850 mu m continuum observations of 1235 Planck Galactic Cold Clumps (PGCCs) made with the Submillimetre Common-User Bolometer Array 2 on the James Clerk Maxwell Telescope. These data are at an angular resolution of 14.4 arcsec, significantly improving upon the 353 GHz resolution of Planck at 5 arcmin, and allowing for a catalogue of 3528 compact sources in 558 PGCCs. We find that the detected PGCCs have significant sub-structure, with 61 per cent of detected PGCCs having three or more compact sources, with filamentary structure also prevalent within the sample. A detection rate of 45 per cent is found across the survey, which is 95 per cent complete to Planck column densities of N-H2 > 5 x10(21) cm(-2). By positionally associating the SCOPE compact sources with young stellar objects, the star formation efficiency, as measured by the ratio of luminosity to mass, in nearby clouds is found to be similar to that in the more distant Galactic Plane, with the column density distributions also indistinguishable from each other.

Published
2019

3. SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution – Survey Description and Compact Source Catalogue

Author

Eden, D J, Liu, Tie, Kim, Kee-Tae, Juvela, M, Liu, S -Y, Tatematsu, K, Di Francesco, J, Wang, K, Wu, Y, Thompson, M A, Fuller, G A, Li, Di, Ristorcelli, I, Kang, Sung-ju, Hirano, N, Johnstone, D, Lin, Y, He, J H, Koch, P M, Sanhueza, Patricio, Qin, S -L, Zhang, Q, Goldsmith, P F, Evans, N J, Yuan, J, Zhang, C -P, White, G J, Choi, Minho, Won Lee, Chang, Toth, L V, Mairs, S, Yi, H -W, Tang, M, Soam, A, Peretto, N, Samal, M R, Fich, M, Parsons, H, Malinen, J, Bendo, G J, Rivera-Ingraham, A, Liu, H -L, Wouterloot, J, Li, P S, Qian, L, Rawlings, J, Rawlings, M G, Feng, S, Wang, B, Li, Dalei, Liu, M, Luo, G, Marston, A P, Pattle, K M, Pelkonen, V -M, Rigby, A J, Zahorecz, S, Zhang, G, Bőgner, R, Aikawa, Y, Akhter, S, Alina, D, Bell, G, Bernard, J -P, Blain, A, Bronfman, L, Byun, D -Y, Chapman, S, Chen, H -R, Chen, M, Chen, W -P, Chen, X, Chen, Xuepeng, Chrysostomou, A, Chu, Y -H, Chung, E J, Cornu, D, Cosentino, G, Cunningham, M R, Demyk, K, Drabek-Maunder, E, Doi, Y, Eswaraiah, C, Falgarone, E, Fehér, O, Fraser, H, Friberg, P, Garay, G, Ge, J X, Gear, W K, Greaves, J, Guan, X, Harvey-Smith, L, Hasegawa, T, He, Y, Henkel, C, Hirota, T, Holland, W, Hughes, A, Jarken, E, Ji, T -G, Jimenez-Serra, I, Kang, Miju, Kawabata, K S, Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, S, Koo, B -C, Kwon, Woojin, Kuan, Y -J, Lacaille, K M, Lai, S -P, Lee, C F, Lee, J -E, Lee, Y -U, Li, H, Lo, N, Lopez, J A P, Lu, X, Lyo, A -R, Mardones, D, McGehee, P, Meng, F, Montier, L, Montillaud, J, Moore, T J T, Morata, O, Moriarty-Schieven, G H, Ohashi, S, Pak, S, Park, Geumsook, Paladini, R, Pech, G, Qiu, K, Ren, Z -Y, Richer, J, Sakai, T, Shang, H, Shinnaga, H, Stamatellos, Dimitris, Tang, Y -W, Traficante, A, Vastel, C, Viti, S, Walsh, A, Wang, H, Wang, J, Ward-Thompson, Derek, Whitworth, A, Wilson, C D, Xu, Y, Yang, J, Yuan, Y -L, Yuan, L, Zavagno, A, Zhang, C, Zhang, H -W, Zhou, C, Zhou, J, Zhu, L, Zuo, P, Eden, D J, Liu, Tie, Kim, Kee-Tae, Juvela, M, Liu, S -Y, Tatematsu, K, Di Francesco, J, Wang, K, Wu, Y, Thompson, M A, Fuller, G A, Li, Di, Ristorcelli, I, Kang, Sung-ju, Hirano, N, Johnstone, D, Lin, Y, He, J H, Koch, P M, Sanhueza, Patricio, Qin, S -L, Zhang, Q, Goldsmith, P F, Evans, N J, Yuan, J, Zhang, C -P, White, G J, Choi, Minho, Won Lee, Chang, Toth, L V, Mairs, S, Yi, H -W, Tang, M, Soam, A, Peretto, N, Samal, M R, Fich, M, Parsons, H, Malinen, J, Bendo, G J, Rivera-Ingraham, A, Liu, H -L, Wouterloot, J, Li, P S, Qian, L, Rawlings, J, Rawlings, M G, Feng, S, Wang, B, Li, Dalei, Liu, M, Luo, G, Marston, A P, Pattle, K M, Pelkonen, V -M, Rigby, A J, Zahorecz, S, Zhang, G, Bőgner, R, Aikawa, Y, Akhter, S, Alina, D, Bell, G, Bernard, J -P, Blain, A, Bronfman, L, Byun, D -Y, Chapman, S, Chen, H -R, Chen, M, Chen, W -P, Chen, X, Chen, Xuepeng, Chrysostomou, A, Chu, Y -H, Chung, E J, Cornu, D, Cosentino, G, Cunningham, M R, Demyk, K, Drabek-Maunder, E, Doi, Y, Eswaraiah, C, Falgarone, E, Fehér, O, Fraser, H, Friberg, P, Garay, G, Ge, J X, Gear, W K, Greaves, J, Guan, X, Harvey-Smith, L, Hasegawa, T, He, Y, Henkel, C, Hirota, T, Holland, W, Hughes, A, Jarken, E, Ji, T -G, Jimenez-Serra, I, Kang, Miju, Kawabata, K S, Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, S, Koo, B -C, Kwon, Woojin, Kuan, Y -J, Lacaille, K M, Lai, S -P, Lee, C F, Lee, J -E, Lee, Y -U, Li, H, Lo, N, Lopez, J A P, Lu, X, Lyo, A -R, Mardones, D, McGehee, P, Meng, F, Montier, L, Montillaud, J, Moore, T J T, Morata, O, Moriarty-Schieven, G H, Ohashi, S, Pak, S, Park, Geumsook, Paladini, R, Pech, G, Qiu, K, Ren, Z -Y, Richer, J, Sakai, T, Shang, H, Shinnaga, H, Stamatellos, Dimitris, Tang, Y -W, Traficante, A, Vastel, C, Viti, S, Walsh, A, Wang, H, Wang, J, Ward-Thompson, Derek, Whitworth, A, Wilson, C D, Xu, Y, Yang, J, Yuan, Y -L, Yuan, L, Zavagno, A, Zhang, C, Zhang, H -W, Zhou, C, Zhou, J, Zhu, L, and Zuo, P

Abstract

We present the first release of the data and compact-source catalogue for the JCMT Large Program SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE). SCOPE consists of 850-μm continuum observations of 1235 Planck Galactic Cold Clumps (PGCCs) made with the Submillimetre Common-User Bolometer Array 2 on the James Clerk Maxwell Telescope. These data are at an angular resolution of 14.4 arcsec, significantly improving upon the 353-GHz resolution of Planck at 5 arcmin, and allowing for a catalogue of 3528 compact sources in 558 PGCCs. We find that the detected PGCCs have significant sub-structure, with 61 per cent of detected PGCCs having 3 or more compact sources, with filamentary structure also prevalent within the sample. A detection rate of 45 per cent is found across the survey, which is 95 per cent complete to Planck column densities of N H 2 NH2 > 5 × 1021 cm−2. By positionally associating the SCOPE compact sources with YSOs, the star formation efficiency, as measured by the ratio of luminosity to mass, in nearby clouds is found to be similar to that in the more distant Galactic Plane, with the column density distributions also indistinguishable from each other.

Published
2019

4. SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution – survey description and compact source catalogue

Author

Eden, D J, primary, Liu, Tie, additional, Kim, Kee-Tae, additional, Juvela, M, additional, Liu, S-Y, additional, Tatematsu, K, additional, Francesco, J. Di, additional, Wang, K, additional, Wu, Y, additional, Thompson, M A, additional, Fuller, G A, additional, Li, Di, additional, Ristorcelli, I, additional, Kang, Sung-ju, additional, Hirano, N, additional, Johnstone, D, additional, Lin, Y, additional, He, J H, additional, Koch, P M, additional, Sanhueza, Patricio, additional, Qin, S-L, additional, Zhang, Q, additional, Goldsmith, P F, additional, Evans, N J, additional, Yuan, J, additional, Zhang, C-P, additional, White, G J, additional, Choi, Minho, additional, Lee, Chang Won, additional, Toth, L V, additional, Mairs, S, additional, Yi, H-W, additional, Tang, M, additional, Soam, A, additional, Peretto, N, additional, Samal, M R, additional, Fich, M, additional, Parsons, H, additional, Malinen, J, additional, Bendo, G J, additional, Rivera-Ingraham, A, additional, Liu, H-L, additional, Wouterloot, J, additional, Li, P S, additional, Qian, L, additional, Rawlings, J, additional, Rawlings, M G, additional, Feng, S, additional, Wang, B, additional, Li, Dalei, additional, Liu, M, additional, Luo, G, additional, Marston, A P, additional, Pattle, K M, additional, Pelkonen, V-M, additional, Rigby, A J, additional, Zahorecz, S, additional, Zhang, G, additional, Bőgner, R, additional, Aikawa, Y, additional, Akhter, S, additional, Alina, D, additional, Bell, G, additional, Bernard, J-P, additional, Blain, A, additional, Bronfman, L, additional, Byun, D-Y, additional, Chapman, S, additional, Chen, H-R, additional, Chen, M, additional, Chen, W-P, additional, Chen, X, additional, Chen, Xuepeng, additional, Chrysostomou, A, additional, Chu, Y-H, additional, Chung, E J, additional, Cornu, D, additional, Cosentino, G, additional, Cunningham, M R, additional, Demyk, K, additional, Drabek-Maunder, E, additional, Doi, Y, additional, Eswaraiah, C, additional, Falgarone, E, additional, Fehér, O, additional, Fraser, H, additional, Friberg, P, additional, Garay, G, additional, Ge, J X, additional, Gear, W K, additional, Greaves, J, additional, Guan, X, additional, Harvey-Smith, L, additional, Hasegawa, T, additional, He, Y, additional, Henkel, C, additional, Hirota, T, additional, Holland, W, additional, Hughes, A, additional, Jarken, E, additional, Ji, T-G, additional, Jimenez-Serra, I, additional, Kang, M, additional, Kawabata, K S, additional, Kim, Gwanjeong, additional, Kim, Jungha, additional, Kim, Jongsoo, additional, Kim, S, additional, Koo, B-C, additional, Kwon, Woojin, additional, Kuan, Y-J, additional, Lacaille, K M, additional, Lai, S-P, additional, Lee, C F, additional, Lee, J-E, additional, Lee, Y-U, additional, Li, H, additional, Lo, N, additional, Lopez, J A P, additional, Lu, X, additional, Lyo, A-R, additional, Mardones, D, additional, McGehee, P, additional, Meng, F, additional, Montier, L, additional, Montillaud, J, additional, Moore, T J T, additional, Morata, O, additional, Moriarty-Schieven, G H, additional, Ohashi, S, additional, Pak, S, additional, Park, Geumsook, additional, Paladini, R, additional, Pech, G, additional, Qiu, K, additional, Ren, Z-Y, additional, Richer, J, additional, Sakai, T, additional, Shang, H, additional, Shinnaga, H, additional, Stamatellos, D, additional, Tang, Y-W, additional, Traficante, A, additional, Vastel, C, additional, Viti, S, additional, Walsh, A, additional, Wang, H, additional, Wang, J, additional, Ward-Thompson, D, additional, Whitworth, A, additional, Wilson, C D, additional, Xu, Y, additional, Yang, J, additional, Yuan, Y-L, additional, Yuan, L, additional, Zavagno, A, additional, Zhang, C, additional, Zhang, H-W, additional, Zhou, C, additional, Zhou, J, additional, Zhu, L, additional, and Zuo, P, additional

Published
2019
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5. The TOP-SCOPE Survey of Planck Galactic Cold Clumps: Survey Overview and Results of an Exemplar Source, PGCC G26.53+0.17

Author

Liu, Tie, Kim, Kee-Tae, Juvela, Mika, Wang, Ke, Tatematsu, Ken’ichi, Francesco, James Di, Liu, Sheng-Yuan, Wu, Yuefang, Thompson, Mark, Fuller, Gary, Eden, David, Li, Di, Ristorcelli, I., Kang, Sung-ju, Lin, Yuxin, Johnstone, D., He, J. H., Koch, P. M., Sanhueza, Patricio, Qin, Sheng-Li, Zhang, Q., Hirano, N., Goldsmith, Paul F., Evans II, Neal J., White, Glenn J., Choi, Minho, Lee, Chang Won, Toth, L. V., Mairs, Steve, Yi, H.-W., Tang, Mengyao, Soam, Archana, Peretto, N., Samal, Manash R., Fich, Michel, Parsons, Harriet, Yuan, Jinghua, Zhang, Chuan-Peng, Malinen, Johanna, Bendo, George J., Rivera-Ingraham, A., Liu, Hong-Li, Wouterloot, Jan, Li, Pak Shing, Qian, Lei, Rawlings, Jonathan, Rawlings, Mark G., Feng, Siyi, Aikawa, Yuri, Akhter, S., Alina, Dana, Bell, Graham, Bernard, J.-P., Blain, Andrew, Bőgner, Rebeka, Bronfman, L., Byun, D.-Y., Chapman, Scott, Chen, Huei-Ru, Chen, M., Chen, Wen-Ping, Chen, X., Chen, Xuepeng, Chrysostomou, A., Cosentino, Giuliana, Cunningham, M. R., Demyk, K., Drabek-Maunder, Emily, Doi, Yasuo, Eswaraiah, C., Falgarone, Edith, Fehér, O., Fraser, Helen, Friberg, Per, Garay, G., Ge, J. X., Gear, W. K., Greaves, Jane, Guan, X., Harvey-Smith, Lisa, HASEGAWA, Tetsuo, Hatchell, J., He, Yuxin, Henkel, C., Hirota, T., Holland, W., Hughes, A., Jarken, E., Ji, Tae-Geun, Jimenez-Serra, Izaskun, Kang, Miju, Kawabata, Koji S., Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, Shinyoung, Koo, B.-C., Kwon, Woojin, Kuan, Yi-Jehng, Lacaille, K. M., Lai, Shih-Ping, Lee, C. F., Lee, J.-E., Lee, Y.-U., Li, Dalei, Li, Hua-bai, Lo, N., Lopez, John A. P., Lu, Xing, Lyo, A-Ran, Mardones, D., Marston, A., McGehee, P., Meng, F., Montier, L., Montillaud, Julien, Moore, T., Morata, O., Moriarty-Schieven, Gerald H., Ohashi, S., Pak, Soojong, Park, Geumsook, Paladini, R., Pattle, Kate M, Pech, Gerardo, Pelkonen, V.-M., Qiu, K., Ren, Zhi-Yuan, Richer, John, Saito, M., Sakai, Takeshi, Shang, H., Shinnaga, Hiroko, Stamatellos, Dimitris, Tang, Y.-W., Traficante, Alessio, Vastel, Charlotte, Viti, S., Walsh, Andrew, Wang, Bingru, Wang, Hongchi, Wang, Junzhi, Ward-Thompson, Derek, Whitworth, Anthony, Xu, Ye, Yang, J., Yang, Yao-Lun, Yuan, Lixia, Zavagno, A., Zhang, Guoyin, Zhang, H.-W., Zhou, Chenlin, Zhou, Jianjun, Zhu, Lei, Zuo, Pei, Zhang, Chao, Liu, Tie, Kim, Kee-Tae, Juvela, Mika, Wang, Ke, Tatematsu, Ken’ichi, Francesco, James Di, Liu, Sheng-Yuan, Wu, Yuefang, Thompson, Mark, Fuller, Gary, Eden, David, Li, Di, Ristorcelli, I., Kang, Sung-ju, Lin, Yuxin, Johnstone, D., He, J. H., Koch, P. M., Sanhueza, Patricio, Qin, Sheng-Li, Zhang, Q., Hirano, N., Goldsmith, Paul F., Evans II, Neal J., White, Glenn J., Choi, Minho, Lee, Chang Won, Toth, L. V., Mairs, Steve, Yi, H.-W., Tang, Mengyao, Soam, Archana, Peretto, N., Samal, Manash R., Fich, Michel, Parsons, Harriet, Yuan, Jinghua, Zhang, Chuan-Peng, Malinen, Johanna, Bendo, George J., Rivera-Ingraham, A., Liu, Hong-Li, Wouterloot, Jan, Li, Pak Shing, Qian, Lei, Rawlings, Jonathan, Rawlings, Mark G., Feng, Siyi, Aikawa, Yuri, Akhter, S., Alina, Dana, Bell, Graham, Bernard, J.-P., Blain, Andrew, Bőgner, Rebeka, Bronfman, L., Byun, D.-Y., Chapman, Scott, Chen, Huei-Ru, Chen, M., Chen, Wen-Ping, Chen, X., Chen, Xuepeng, Chrysostomou, A., Cosentino, Giuliana, Cunningham, M. R., Demyk, K., Drabek-Maunder, Emily, Doi, Yasuo, Eswaraiah, C., Falgarone, Edith, Fehér, O., Fraser, Helen, Friberg, Per, Garay, G., Ge, J. X., Gear, W. K., Greaves, Jane, Guan, X., Harvey-Smith, Lisa, HASEGAWA, Tetsuo, Hatchell, J., He, Yuxin, Henkel, C., Hirota, T., Holland, W., Hughes, A., Jarken, E., Ji, Tae-Geun, Jimenez-Serra, Izaskun, Kang, Miju, Kawabata, Koji S., Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, Shinyoung, Koo, B.-C., Kwon, Woojin, Kuan, Yi-Jehng, Lacaille, K. M., Lai, Shih-Ping, Lee, C. F., Lee, J.-E., Lee, Y.-U., Li, Dalei, Li, Hua-bai, Lo, N., Lopez, John A. P., Lu, Xing, Lyo, A-Ran, Mardones, D., Marston, A., McGehee, P., Meng, F., Montier, L., Montillaud, Julien, Moore, T., Morata, O., Moriarty-Schieven, Gerald H., Ohashi, S., Pak, Soojong, Park, Geumsook, Paladini, R., Pattle, Kate M, Pech, Gerardo, Pelkonen, V.-M., Qiu, K., Ren, Zhi-Yuan, Richer, John, Saito, M., Sakai, Takeshi, Shang, H., Shinnaga, Hiroko, Stamatellos, Dimitris, Tang, Y.-W., Traficante, Alessio, Vastel, Charlotte, Viti, S., Walsh, Andrew, Wang, Bingru, Wang, Hongchi, Wang, Junzhi, Ward-Thompson, Derek, Whitworth, Anthony, Xu, Ye, Yang, J., Yang, Yao-Lun, Yuan, Lixia, Zavagno, A., Zhang, Guoyin, Zhang, H.-W., Zhou, Chenlin, Zhou, Jianjun, Zhu, Lei, Zuo, Pei, and Zhang, Chao

Abstract

The low dust temperatures (<14 K) of Planck Galactic cold clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase of star formation. “TOP-SCOPE” is a joint survey program targeting ∼2000 PGCCs in J=1–0 transitions of CO isotopologues and ∼1000 PGCCs in 850 μm continuum emission. The objective of the “TOP-SCOPE” survey and the joint surveys (SMT 10 m, KVN 21 m, and NRO 45 m) is to statistically study the initial conditions occurring during star formation and the evolution of molecular clouds, across a wide range of environments. The observations, data analysis, and example science cases for these surveys are introduced with an exemplar source, PGCC G26.53+0.17 (G26), which is a filamentary infrared dark cloud (IRDC). The total mass, length, and mean line mass (M/L) of the G26 filament are ∼6200 M☉, ∼12 pc, and ∼500 M☉pc−1, respectively. Ten massive clumps, including eight starless ones, are found along the filament. The most massive clump as a whole may still be in global collapse, while its denser part seems to be undergoing expansion owing to outflow feedback. The fragmentation in the G26 filament from cloud scale to clump scale is in agreement with gravitational fragmentation of an isothermal, nonmagnetized, and turbulent supported cylinder. A bimodal behavior in dust emissivity spectral index (β) distribution is found in G26, suggesting grain growth along the filament. The G26 filament may be formed owing to large-scale compression flows evidenced by the temperature and velocity gradients across its natal cloud. Key words: ISM: abundances – ISM: clouds – ISM: kinematics and dynamics – stars: formation – surveys

Published
2018

6. The TOP-SCOPE Survey of Planck Galactic Cold Clumps: Survey Overview and Results of an Exemplar Source, PGCC G26.53+0.17

Author

Liu, Tie, primary, Kim, Kee-Tae, additional, Juvela, Mika, additional, Wang, Ke, additional, Tatematsu, Ken’ichi, additional, Francesco, James Di, additional, Liu, Sheng-Yuan, additional, Wu, Yuefang, additional, Thompson, Mark, additional, Fuller, Gary, additional, Eden, David, additional, Li, Di, additional, Ristorcelli, I., additional, Kang, Sung-ju, additional, Lin, Yuxin, additional, Johnstone, D., additional, He, J. H., additional, Koch, P. M., additional, Sanhueza, Patricio, additional, Qin, Sheng-Li, additional, Zhang, Q., additional, Hirano, N., additional, Goldsmith, Paul F., additional, Evans II, Neal J., additional, White, Glenn J., additional, Choi, Minho, additional, Lee, Chang Won, additional, Toth, L. V., additional, Mairs, Steve, additional, Yi, H.-W., additional, Tang, Mengyao, additional, Soam, Archana, additional, Peretto, N., additional, Samal, Manash R., additional, Fich, Michel, additional, Parsons, Harriet, additional, Yuan, Jinghua, additional, Zhang, Chuan-Peng, additional, Malinen, Johanna, additional, Bendo, George J., additional, Rivera-Ingraham, A., additional, Liu, Hong-Li, additional, Wouterloot, Jan, additional, Li, Pak Shing, additional, Qian, Lei, additional, Rawlings, Jonathan, additional, Rawlings, Mark G., additional, Feng, Siyi, additional, Aikawa, Yuri, additional, Akhter, S., additional, Alina, Dana, additional, Bell, Graham, additional, Bernard, J.-P., additional, Blain, Andrew, additional, Bőgner, Rebeka, additional, Bronfman, L., additional, Byun, D.-Y., additional, Chapman, Scott, additional, Chen, Huei-Ru, additional, Chen, M., additional, Chen, Wen-Ping, additional, Chen, X., additional, Chen, Xuepeng, additional, Chrysostomou, A., additional, Cosentino, Giuliana, additional, Cunningham, M. R., additional, Demyk, K., additional, Drabek-Maunder, Emily, additional, Doi, Yasuo, additional, Eswaraiah, C., additional, Falgarone, Edith, additional, Fehér, O., additional, Fraser, Helen, additional, Friberg, Per, additional, Garay, G., additional, Ge, J. X., additional, Gear, W. K., additional, Greaves, Jane, additional, Guan, X., additional, Harvey-Smith, Lisa, additional, HASEGAWA, Tetsuo, additional, Hatchell, J., additional, He, Yuxin, additional, Henkel, C., additional, Hirota, T., additional, Holland, W., additional, Hughes, A., additional, Jarken, E., additional, Ji, Tae-Geun, additional, Jimenez-Serra, Izaskun, additional, Kang, Miju, additional, Kawabata, Koji S., additional, Kim, Gwanjeong, additional, Kim, Jungha, additional, Kim, Jongsoo, additional, Kim, Shinyoung, additional, Koo, B.-C., additional, Kwon, Woojin, additional, Kuan, Yi-Jehng, additional, Lacaille, K. M., additional, Lai, Shih-Ping, additional, Lee, C. F., additional, Lee, J.-E., additional, Lee, Y.-U., additional, Li, Dalei, additional, Li, Hua-bai, additional, Lo, N., additional, Lopez, John A. P., additional, Lu, Xing, additional, Lyo, A-Ran, additional, Mardones, D., additional, Marston, A., additional, McGehee, P., additional, Meng, F., additional, Montier, L., additional, Montillaud, Julien, additional, Moore, T., additional, Morata, O., additional, Moriarty-Schieven, Gerald H., additional, Ohashi, S., additional, Pak, Soojong, additional, Park, Geumsook, additional, Paladini, R., additional, Pattle, Kate M, additional, Pech, Gerardo, additional, Pelkonen, V.-M., additional, Qiu, K., additional, Ren, Zhi-Yuan, additional, Richer, John, additional, Saito, M., additional, Sakai, Takeshi, additional, Shang, H., additional, Shinnaga, Hiroko, additional, Stamatellos, Dimitris, additional, Tang, Y.-W., additional, Traficante, Alessio, additional, Vastel, Charlotte, additional, Viti, S., additional, Walsh, Andrew, additional, Wang, Bingru, additional, Wang, Hongchi, additional, Wang, Junzhi, additional, Ward-Thompson, D., additional, Whitworth, Anthony, additional, Xu, Ye, additional, Yang, J., additional, Yang, Yao-Lun, additional, Yuan, Lixia, additional, Zavagno, A., additional, Zhang, Guoyin, additional, Zhang, H.-W., additional, Zhou, Chenlin, additional, Zhou, Jianjun, additional, Zhu, Lei, additional, Zuo, Pei, additional, and Zhang, Chao, additional

Published
2018
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7. SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution – Survey Description and Compact Source Catalogue

Author

Eden, D J, Liu, Tie, Kim, Kee-Tae, Juvela, M, Liu, S -Y, Tatematsu, K, Di Francesco, J, Wang, K, Wu, Y, Thompson, M A, Fuller, G A, Li, Di, Ristorcelli, I, Kang, Sung-ju, Hirano, N, Johnstone, D, Lin, Y, He, J H, Koch, P M, Sanhueza, Patricio, Qin, S -L, Zhang, Q, Goldsmith, P F, Evans, N J, Yuan, J, Zhang, C -P, White, G. J., Choi, Minho, Won Lee, Chang, Toth, L V, Mairs, S, Yi, H -W, Tang, M, Soam, A, Peretto, N, Samal, M R, Fich, M, Parsons, H, Malinen, J, Bendo, G J, Rivera-Ingraham, A, Liu, H -L, Wouterloot, J, Li, P S, Qian, L, Rawlings, J, Rawlings, M G, Feng, S, Wang, B, Li, Dalei, Liu, M, Luo, G, Marston, A P, Pattle, K M, Pelkonen, V -M, Rigby, A J, Zahorecz, S, Zhang, G, Bőgner, R, Aikawa, Y, Akhter, S, Alina, D, Bell, G, Bernard, J -P, Blain, A, Bronfman, L, Byun, D -Y, Chapman, S, Chen, H -R, Chen, M, Chen, W -P, Chen, X, Chen, Xuepeng, Chrysostomou, A, Chu, Y -H, Chung, E J, Cornu, D, Cosentino, G, Cunningham, M R, Demyk, K, Drabek-Maunder, E, Doi, Y, Eswaraiah, C, Falgarone, E, Fehér, O, Fraser, Helen, Friberg, P, Garay, G, Ge, J X, Gear, W K, Greaves, J, Guan, X, Harvey-Smith, L, Hasegawa, T, He, Y, Henkel, C, Hirota, T, Holland, W, Hughes, A, Jarken, E, Ji, T -G, Jimenez-Serra, I, Kang, Miju, Kawabata, K S, Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, S, Koo, B -C, Kwon, Woojin, Kuan, Y -J, Lacaille, K M, Lai, S -P, Lee, C F, Lee, J -E, Lee, Y -U, Li, H, Lo, N, Lopez, J A P, Lu, X, Lyo, A -R, Mardones, D, McGehee, P, Meng, F, Montier, L, Montillaud, J, Moore, T J T, Morata, O, Moriarty-Schieven, G H, Ohashi, S, Pak, S, Park, Geumsook, Paladini, R, Pech, G, Qiu, K, Ren, Z -Y, Richer, J, Sakai, T, Shang, H, Shinnaga, H, Stamatellos, D, Tang, Y -W, Traficante, A, Vastel, C, Viti, S, Walsh, A, Wang, H, Wang, J, Ward-Thompson, D, Whitworth, A, Wilson, C D, Xu, Y, Yang, J, Yuan, Y -L, Yuan, L, Zavagno, A, Zhang, C, Zhang, H -W, Zhou, C, Zhou, J, Zhu, L, Zuo, P, Eden, D J, Liu, Tie, Kim, Kee-Tae, Juvela, M, Liu, S -Y, Tatematsu, K, Di Francesco, J, Wang, K, Wu, Y, Thompson, M A, Fuller, G A, Li, Di, Ristorcelli, I, Kang, Sung-ju, Hirano, N, Johnstone, D, Lin, Y, He, J H, Koch, P M, Sanhueza, Patricio, Qin, S -L, Zhang, Q, Goldsmith, P F, Evans, N J, Yuan, J, Zhang, C -P, White, G. J., Choi, Minho, Won Lee, Chang, Toth, L V, Mairs, S, Yi, H -W, Tang, M, Soam, A, Peretto, N, Samal, M R, Fich, M, Parsons, H, Malinen, J, Bendo, G J, Rivera-Ingraham, A, Liu, H -L, Wouterloot, J, Li, P S, Qian, L, Rawlings, J, Rawlings, M G, Feng, S, Wang, B, Li, Dalei, Liu, M, Luo, G, Marston, A P, Pattle, K M, Pelkonen, V -M, Rigby, A J, Zahorecz, S, Zhang, G, Bőgner, R, Aikawa, Y, Akhter, S, Alina, D, Bell, G, Bernard, J -P, Blain, A, Bronfman, L, Byun, D -Y, Chapman, S, Chen, H -R, Chen, M, Chen, W -P, Chen, X, Chen, Xuepeng, Chrysostomou, A, Chu, Y -H, Chung, E J, Cornu, D, Cosentino, G, Cunningham, M R, Demyk, K, Drabek-Maunder, E, Doi, Y, Eswaraiah, C, Falgarone, E, Fehér, O, Fraser, Helen, Friberg, P, Garay, G, Ge, J X, Gear, W K, Greaves, J, Guan, X, Harvey-Smith, L, Hasegawa, T, He, Y, Henkel, C, Hirota, T, Holland, W, Hughes, A, Jarken, E, Ji, T -G, Jimenez-Serra, I, Kang, Miju, Kawabata, K S, Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, S, Koo, B -C, Kwon, Woojin, Kuan, Y -J, Lacaille, K M, Lai, S -P, Lee, C F, Lee, J -E, Lee, Y -U, Li, H, Lo, N, Lopez, J A P, Lu, X, Lyo, A -R, Mardones, D, McGehee, P, Meng, F, Montier, L, Montillaud, J, Moore, T J T, Morata, O, Moriarty-Schieven, G H, Ohashi, S, Pak, S, Park, Geumsook, Paladini, R, Pech, G, Qiu, K, Ren, Z -Y, Richer, J, Sakai, T, Shang, H, Shinnaga, H, Stamatellos, D, Tang, Y -W, Traficante, A, Vastel, C, Viti, S, Walsh, A, Wang, H, Wang, J, Ward-Thompson, D, Whitworth, A, Wilson, C D, Xu, Y, Yang, J, Yuan, Y -L, Yuan, L, Zavagno, A, Zhang, C, Zhang, H -W, Zhou, C, Zhou, J, Zhu, L, and Zuo, P

Abstract

We present the first release of the data and compact-source catalogue for the JCMT Large Program SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE). SCOPE consists of 850-μm continuum observations of 1235 Planck Galactic Cold Clumps (PGCCs) made with the Submillimetre Common-User Bolometer Array 2 on the James Clerk Maxwell Telescope. These data are at an angular resolution of 14.4 arcsec, significantly improving upon the 353-GHz resolution of Planck at 5 arcmin, and allowing for a catalogue of 3528 compact sources in 558 PGCCs. We find that the detected PGCCs have significant sub-structure, with 61 per cent of detected PGCCs having 3 or more compact sources, with filamentary structure also prevalent within the sample. A detection rate of 45 per cent is found across the survey, which is 95 per cent complete to Planck column densities of NH2 > 5 × 1021 cm−2. By positionally associating the SCOPE compact sources with YSOs, the star formation efficiency, as measured by the ratio of luminosity to mass, in nearby clouds is found to be similar to that in the more distant Galactic Plane, with the column density distributions also indistinguishable from each other.

8. The TOP-SCOPE Survey of Planck Galactic Cold Clumps: Survey Overview and Results of an Exemplar Source, PGCC G26.53+0.17

Author

Liu, Tie, Kim, Kee-Tae, Juvela, Mika, Wang, Ke, Tatematsu, Ken’ichi, Francesco, James Di, Liu, Sheng-Yuan, Wu, Yuefang, Thompson, Mark, Fuller, Gary, Eden, David, Li, Di, Ristorcelli, I., Kang, Sung-ju, Lin, Yuxin, Johnstone, D., He, J. H., Koch, P. M., Sanhueza, Patricio, Qin, Sheng-Li, Zhang, Q., Hirano, N., Goldsmith, Paul F., Evans II, Neal J., White, Glenn J., Choi, Minho, Lee, Chang Won, Toth, L. V., Mairs, Steve, Yi, H.-W., Tang, Mengyao, Soam, Archana, Peretto, N., Samal, Manash R., Fich, Michel, Parsons, Harriet, Yuan, Jinghua, Zhang, Chuan-Peng, Malinen, Johanna, Bendo, George J., Rivera-Ingraham, A., Liu, Hong-Li, Wouterloot, Jan, Li, Pak Shing, Qian, Lei, Rawlings, Jonathan, Rawlings, Mark G., Feng, Siyi, Aikawa, Yuri, Akhter, S., Alina, Dana, Bell, Graham, Bernard, J.-P., Blain, Andrew, Bőgner, Rebeka, Bronfman, L., Byun, D.-Y., Chapman, Scott, Chen, Huei-Ru, Chen, M., Chen, Wen-Ping, Chen, X., Chen, Xuepeng, Chrysostomou, A., Cosentino, Giuliana, Cunningham, M. R., Demyk, K., Drabek-Maunder, Emily, Doi, Yasuo, Eswaraiah, C., Falgarone, Edith, Fehér, O., Fraser, Helen, Friberg, Per, Garay, G., Ge, J. X., Gear, W. K., Greaves, Jane, Guan, X., Harvey-Smith, Lisa, HASEGAWA, Tetsuo, Hatchell, J., He, Yuxin, Henkel, C., Hirota, T., Holland, W., Hughes, A., Jarken, E., Ji, Tae-Geun, Jimenez-Serra, Izaskun, Kang, Miju, Kawabata, Koji S., Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, Shinyoung, Koo, B.-C., Kwon, Woojin, Kuan, Yi-Jehng, Lacaille, K. M., Lai, Shih-Ping, Lee, C. F., Lee, J.-E., Lee, Y.-U., Li, Dalei, Li, Hua-bai, Lo, N., Lopez, John A. P., Lu, Xing, Lyo, A-Ran, Mardones, D., Marston, A., McGehee, P., Meng, F., Montier, L., Montillaud, Julien, Moore, T., Morata, O., Moriarty-Schieven, Gerald H., Ohashi, S., Pak, Soojong, Park, Geumsook, Paladini, R., Pattle, Kate M, Pech, Gerardo, Pelkonen, V.-M., Qiu, K., Ren, Zhi-Yuan, Richer, John, Saito, M., Sakai, Takeshi, Shang, H., Shinnaga, Hiroko, Stamatellos, Dimitris, Tang, Y.-W., Traficante, Alessio, Vastel, Charlotte, Viti, S., Walsh, Andrew, Wang, Bingru, Wang, Hongchi, Wang, Junzhi, Ward-Thompson, D., Whitworth, Anthony, Xu, Ye, Yang, J., Yang, Yao-Lun, Yuan, Lixia, Zavagno, A., Zhang, Guoyin, Zhang, H.-W., Zhou, Chenlin, Zhou, Jianjun, Zhu, Lei, Zuo, Pei, Zhang, Chao, Liu, Tie, Kim, Kee-Tae, Juvela, Mika, Wang, Ke, Tatematsu, Ken’ichi, Francesco, James Di, Liu, Sheng-Yuan, Wu, Yuefang, Thompson, Mark, Fuller, Gary, Eden, David, Li, Di, Ristorcelli, I., Kang, Sung-ju, Lin, Yuxin, Johnstone, D., He, J. H., Koch, P. M., Sanhueza, Patricio, Qin, Sheng-Li, Zhang, Q., Hirano, N., Goldsmith, Paul F., Evans II, Neal J., White, Glenn J., Choi, Minho, Lee, Chang Won, Toth, L. V., Mairs, Steve, Yi, H.-W., Tang, Mengyao, Soam, Archana, Peretto, N., Samal, Manash R., Fich, Michel, Parsons, Harriet, Yuan, Jinghua, Zhang, Chuan-Peng, Malinen, Johanna, Bendo, George J., Rivera-Ingraham, A., Liu, Hong-Li, Wouterloot, Jan, Li, Pak Shing, Qian, Lei, Rawlings, Jonathan, Rawlings, Mark G., Feng, Siyi, Aikawa, Yuri, Akhter, S., Alina, Dana, Bell, Graham, Bernard, J.-P., Blain, Andrew, Bőgner, Rebeka, Bronfman, L., Byun, D.-Y., Chapman, Scott, Chen, Huei-Ru, Chen, M., Chen, Wen-Ping, Chen, X., Chen, Xuepeng, Chrysostomou, A., Cosentino, Giuliana, Cunningham, M. R., Demyk, K., Drabek-Maunder, Emily, Doi, Yasuo, Eswaraiah, C., Falgarone, Edith, Fehér, O., Fraser, Helen, Friberg, Per, Garay, G., Ge, J. X., Gear, W. K., Greaves, Jane, Guan, X., Harvey-Smith, Lisa, HASEGAWA, Tetsuo, Hatchell, J., He, Yuxin, Henkel, C., Hirota, T., Holland, W., Hughes, A., Jarken, E., Ji, Tae-Geun, Jimenez-Serra, Izaskun, Kang, Miju, Kawabata, Koji S., Kim, Gwanjeong, Kim, Jungha, Kim, Jongsoo, Kim, Shinyoung, Koo, B.-C., Kwon, Woojin, Kuan, Yi-Jehng, Lacaille, K. M., Lai, Shih-Ping, Lee, C. F., Lee, J.-E., Lee, Y.-U., Li, Dalei, Li, Hua-bai, Lo, N., Lopez, John A. P., Lu, Xing, Lyo, A-Ran, Mardones, D., Marston, A., McGehee, P., Meng, F., Montier, L., Montillaud, Julien, Moore, T., Morata, O., Moriarty-Schieven, Gerald H., Ohashi, S., Pak, Soojong, Park, Geumsook, Paladini, R., Pattle, Kate M, Pech, Gerardo, Pelkonen, V.-M., Qiu, K., Ren, Zhi-Yuan, Richer, John, Saito, M., Sakai, Takeshi, Shang, H., Shinnaga, Hiroko, Stamatellos, Dimitris, Tang, Y.-W., Traficante, Alessio, Vastel, Charlotte, Viti, S., Walsh, Andrew, Wang, Bingru, Wang, Hongchi, Wang, Junzhi, Ward-Thompson, D., Whitworth, Anthony, Xu, Ye, Yang, J., Yang, Yao-Lun, Yuan, Lixia, Zavagno, A., Zhang, Guoyin, Zhang, H.-W., Zhou, Chenlin, Zhou, Jianjun, Zhu, Lei, Zuo, Pei, and Zhang, Chao

Abstract

The low dust temperatures (<14 K) of Planck Galactic cold clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase of star formation. "TOP-SCOPE" is a joint survey program targeting ~2000 PGCCs in J = 1–0 transitions of CO isotopologues and ~1000 PGCCs in 850 μm continuum emission. The objective of the "TOP-SCOPE" survey and the joint surveys (SMT 10 m, KVN 21 m, and NRO 45 m) is to statistically study the initial conditions occurring during star formation and the evolution of molecular clouds, across a wide range of environments. The observations, data analysis, and example science cases for these surveys are introduced with an exemplar source, PGCC G26.53+0.17 (G26), which is a filamentary infrared dark cloud (IRDC). The total mass, length, and mean line mass (M/L) of the G26 filament are ~6200 M ☉, ~12 pc, and ~500 M ☉ pc−1, respectively. Ten massive clumps, including eight starless ones, are found along the filament. The most massive clump as a whole may still be in global collapse, while its denser part seems to be undergoing expansion owing to outflow feedback. The fragmentation in the G26 filament from cloud scale to clump scale is in agreement with gravitational fragmentation of an isothermal, nonmagnetized, and turbulent supported cylinder. A bimodal behavior in dust emissivity spectral index (β) distribution is found in G26, suggesting grain growth along the filament. The G26 filament may be formed owing to large-scale compression flows evidenced by the temperature and velocity gradients across its natal cloud.

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