The JCMT Transient Survey: Four-year Summary of Monitoring the Submillimeter Variability of Protostars
- Lee, Yong-Hee
- Johnstone, Doug
- Lee, Jeong-Eun
- Herczeg, Gregory
- Mairs, Steve
- Contreras-Peña, Carlos
- Hatchell, Jennifer
- Naylor, Tim
- Bell, Graham S.
- Bourke, Tyler L.
- Broughton, Colton
- Francis, Logan
- Gupta, Aashish
- Harsono, Daniel
- Liu, Sheng-Yuan
- Park, Geumsook
- Plovie, Spencer
- Moriarty-Schieven, Gerald H.
- Scholz, Aleks
- Sharma, Tanvi
- Stella Teixeira, Paula
- Wang, Yao-Te
- Aikawa, Yuri
- Bower, Geoffrey C.
- Vivien Chen, Huei-Ru
- Bae, Jaehan
- Baek, Giseon
- Chapman, Scott
- Ping Chen, Wen
- Du, Fujun
- Dutta, Somnath
- Forbrich, Jan
- Guo, Zhen
- Inutsuka, Shu-ichiro
- Kang, Miju
- Kirk, Helen
- Kuan, Yi-Jehng
- Kwon, Woojin
- Lai, Shih-Ping
- Lalchand, Bhavana
- Lane, James M. M.
- Lee, Chin-Fei
- Liu, Tie
- Morata, Oscar
- Pearson, Samuel
- Pon, Andy
- Sahu, Dipen
- Shang, Hsien
- Stamatellos, Dimitris
- Tang, Shih-Yun
- Xu, Ziyan
- Yoo, Hyunju
- Rawlings, Jonathan M. C.
DOIAbstract
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 three groups: Periodic, Curved, and Linear. For the Curved and Periodic cases, the detectable fractional amplitude, with respect to mean peak brightness, ...
Add to ORKG