Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data
Sean M. O'Brien Megan E. Schwamb Samuel Gill Christopher A. Watson Matthew R. Burleigh Alicia Kendall David R. Anderson José I. Vines James S. Jenkins Douglas R. Alves Laura Trouille Solène Ulmer-Moll Edward M. Bryant Ioannis Apergis Matthew P. Battley Daniel Bayliss Nora L. Eisner Edward Gillen Michael R. Goad Maximilian N. Günther Beth A. Henderson Jeong-Eun Heo David G. Jackson Chris Lintott James McCormac Maximiliano Moyano Louise D. Nielsen Ares Osborn Suman Saha Ramotholo R. Sefako Andrew W. Stephens Rosanna H. Tilbrook Stéphane Udry Richard G. West Peter J. Wheatley Tafadzwa Zivave See Min Lim Arttu Sainio




Sean M. O'Brien
sobrien27@qub.ac.uk


0000-0001-7367-1188]Sean M. O'Brien


0000-0003-4365-1455]Megan E. Schwamb


0000-0002-4259-0155]Samuel Gill



0000-0002-9718-3266]Christopher A. Watson


0000-0003-0684-7803]Matthew R. Burleigh


0009-0006-0719-9229]Alicia Kendall


0000-0003-2478-0120]Sarah L. Casewell


0000-0001-7416-7522]David R. Anderson


0000-0002-1896-2377]José I. Vines


0000-0003-2733-8725]James S. Jenkins



0000-0002-5619-2502]Douglas R. Alves


0000-0002-1113-4122]Laura Trouille


0000-0003-2417-7006]Solène Ulmer-Moll



0000-0001-7904-4441]Edward M. Bryant


0009-0004-7473-4573]Ioannis Apergis



0000-0002-1357-9774]Matthew P. Battley


0000-0001-6023-1335]Daniel Bayliss



0000-0002-9138-9028]Nora L. Eisner


0000-0003-2851-3070]Edward Gillen


0000-0002-2908-7360]Michael R. Goad


0000-0002-3164-9086]Maximilian N. Günther


0000-0002-2813-3994]Beth A. Henderson


0000-0003-2530-3000]Jeong-Eun Heo


0000-0003-0343-7905]David G. Jackson


0000-0001-5578-359X]Chris Lintott


0000-0003-1631-4170]James McCormac



0000-0002-7927-9555]Maximiliano Moyano


0000-0002-5254-2499]Louise D. Nielsen


0000-0002-5899-7750]Ares Osborn



0000-0001-8018-0264]Suman Saha



0000-0003-3904-6754]Ramotholo R. Sefako


0000-0002-4434-2307]Andrew W. Stephens


0000-0002-2023-4029]Rosanna H. Tilbrook


0000-0001-7576-6236]Stéphane Udry


0000-0001-6604-5533]Richard G. West



0000-0003-1452-2240]Peter J. Wheatley







0009-0008-0576-556X]See Min Lim


0000-0003-4864-5484]Arttu Sainio



We present the results from the first two years of the Planet Hunters NGTS citizen science project, which searches for transiting planet candidates in data from the Next Generation Transit Survey (NGTS) by enlisting the help of members of the general public. Over 8,000 registered volunteers reviewed 138,198 light curves from the NGTS Public Data Releases 1 and 2. We utilize a user weighting scheme to combine the classifications of multiple users to identify the most promising planet candidates not initially discovered by the NGTS team. We highlight the five most interesting planet candidates detected through this search, which are all candidate short-period giant planets. This includes the TIC-165227846 system that, if confirmed, would be the lowest-mass star to host a close-in giant planet. We assess the detection efficiency of the project by determining the number of confirmed planets from the NASA Exoplanet Archive and TESS Objects of Interest (TOIs) successfully recovered by this search and find that 74% of confirmed planets and 63% of TOIs detected by NGTS are recovered by the Planet Hunters NGTS project. The identification of new planet candidates shows that the citizen science approach can provide a complementary method to the detection of exoplanets with ground-based surveys such as NGTS. 












§ INTRODUCTION

ections/1_intro.tex



§ NEXT GENERATION TRANSIT SURVEY

ections/2_ngts.tex



§ PLANET HUNTERS NGTS

ections/3_phngts.tex



§ IDENTIFYING CANDIDATES

ections/4_idcands.tex



§ PLANET CANDIDATES AND INTERESTING SYSTEMS

ections/5_planetcands.tex



§ DETECTION EFFICIENCY

ections/6_deteff.tex



§ CONCLUSIONS

ections/7_conclusions.tex



§ ACKNOWLEDGMENTS

ections/ack.tex





§ DISTRIBUTION OF SCORES AND WEIGHTS FOR THE ADDITIONAL WORKFLOWS

ections/8_scoresweights.tex



§ TABLES OF PHNGTS CLASSIFICATIONS

ections/9_classtables.tex


aasjournal

