The JCMT Transient Survey : four-year summary of monitoring the submillimeter variability of protostars
- Lee, YH
- Johnstone, D
- Lee, JE
- Herczeg, G
- Mairs, S
- Contreras-Pena, C
- Hatchell, J
- Naylor, T
- Bell, GS
- Bourke, TL
- Broughton, C
- Francis, L
- Gupta, A
- Harsono, D
- Liu, SY
- Park, G
- Plovie, S
- Moriarty-Schieven, GH
- Scholz, A
- Sharma, T
- Teixeira, PS
- Wang, YT
- Aikawa, Y
- Bower, GC
- Chen, HRV
- Bae, J
- Baek, G
- Chapman, S
- Chen, WP
- Du, FJ
- Dutta, S
- Forbrich, J
- Guo, Z
- Inutsuka, S
- Kang, M
- Kirk, H
- Kuan, YJ
- Kwon, W
- Lai, SP
- Lalchand, B
- Lane, JMM
- Lee, CF
- Liu, T
- Morata, O
- Pearson, S
- Pon, A
- Sahu, D
- Shang, H
- Stamatellos, D
- Tang, SY
- Xu, Z
- Yoo, H
- Rawlings, JMC
DOIAbstract
The contribution of C.C.P. was funded by a Leverhulme Trust Research Project Grant. D.S. recognizes support from STFC grants ST/N504014/1 and ST/M000877/1.We present the four-year survey results of monthly submillimeter monitoring of eight nearby (<500 pc) star-forming regions by the JCMT Transient Survey. We apply the Lomb–Scargle Periodogram technique to search for and characterize variability on 295 submillimeter peaks brighter than 0.14 Jy beam−1, including 22 disk sources (Class II), 83 protostars (Class 0/I), and 190 starless sources. We uncover 18 secular variables, all of them protostars. No single-epoch burst or drop events and no inherently stochastic sources are observed. We classify the secular variables by their timescales into...
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