干旱区生态环境知识资源中心(Arid): NGTS-14Ab: a Neptune-sized transiting planet in the desert

Arid

DOI	10.1051/0004-6361/202039712
	NGTS-14Ab: a Neptune-sized transiting planet in the desert
	Smith, A. M. S.; Acton, J. S.; Anderson, D. R.; Armstrong, D. J.; Bayliss, D.; Belardi, C.; Bouchy, F.; Brahm, R.; Briegal, J. T.; Bryant, E. M.; Burleigh, M. R.; Cabrera, J.; Chaushev, A.; Cooke, B. F.; Costes, J. C.; Csizmadia, Sz.; Eigmueller, Ph.; Erikson, A.; Gill, S.; Gillen, E.; Goad, M. R.; Gunther, M. N.; Henderson, B. A.; Hogan, A.; Jordan, A.; Lendl, M.; McCormac, J.; Moyano, M.; Nielsen, L. D.; Rauer, H.; Raynard, L.; Tilbrook, R. H.; Turner, O.; Udry, S.; Vines, J. I.; Watson, C. A.; West, R. G.; Wheatley, P. J.
通讯作者	Smith, AMS (corresponding author), German Aerosp Ctr, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany.
来源期刊	ASTRONOMY & ASTROPHYSICS
ISSN	0004-6361
EISSN	1432-0746
出版年	2021
卷号	646
英文摘要	Context. The sub-Jovian, or Neptunian, desert is a previously identified region of parameter space where there is a relative dearth of intermediate-mass planets with short orbital periods.Aims. We present the discovery of a new transiting planetary system within the Neptunian desert, NGTS-14.Methods. Transits of NGTS-14Ab were discovered in photometry from the Next Generation Transit Survey (NGTS). Follow-up transit photometry was conducted from several ground-based facilities, as well as extracted from TESS full-frame images. We combine radial velocities from the HARPS spectrograph with the photometry in a global analysis to determine the system parameters.Results. NGTS-14Ab has a radius that is about 30 per cent larger than that of Neptune (0.444 +/- 0.030 R-Jup) and is around 70 per cent more massive than Neptune (0.092 +/- 0.012 M-Jup). It transits the main-sequence K1 star, NGTS-14A, with a period of 3.54 days, just far away enough to have maintained at least some of its primordial atmosphere. We have also identified a possible long-period stellar mass companion to the system, NGTS-14B, and we investigate the binarity of exoplanet host stars inside and outside the Neptunian desert using Gaia.
英文关键词	planetary systems planets and satellites: detection planets and satellites: individual: NGTS-14Ab binaries: general
类型	Article
语种	英语
开放获取类型	Green Published, Green Accepted, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000624671800002
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
来源机构	University of London
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349599
作者单位	[Smith, A. M. S.; Csizmadia, Sz.; Eigmueller, Ph.; Erikson, A.] German Aerosp Ctr, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany; [Acton, J. S.; Belardi, C.; Burleigh, M. R.; Goad, M. R.; Henderson, B. A.; Hogan, A.; Raynard, L.; Tilbrook, R. H.] Univ Leicester, Sch Phys & Astron, Leicester LE1 7RH, Leics, England; [Anderson, D. R.; Armstrong, D. J.; Bayliss, D.; Briegal, J. T.; Cooke, B. F.; Gill, S.; McCormac, J.; West, R. G.; Wheatley, P. J.] Univ Warwick, Ctr Exoplanets & Habitabil, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England; [Anderson, D. R.; Armstrong, D. J.; Bayliss, D.; Bryant, E. M.; Cooke, B. F.; Gill, S.; McCormac, J.; West, R. G.; Wheatley, P. J.] Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England; [Bouchy, F.; Lendl, M.; Nielsen, L. D.; Turner, O.; Udry, S.] Univ Geneva, Observ Geneve, 51 Ch Maillettes, CH-1290 Sauverny, Switzerland; [Brahm, R.] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Av Diagonal Torres 2640, Santiago, Chile; [Brahm, R.] ...
推荐引用方式 GB/T 7714	Smith, A. M. S.,Acton, J. S.,Anderson, D. R.,et al. NGTS-14Ab: a Neptune-sized transiting planet in the desert[J]. University of London,2021,646.
APA	Smith, A. M. S..,Acton, J. S..,Anderson, D. R..,Armstrong, D. J..,Bayliss, D..,...&Wheatley, P. J..(2021).NGTS-14Ab: a Neptune-sized transiting planet in the desert.ASTRONOMY & ASTROPHYSICS,646.
MLA	Smith, A. M. S.,et al."NGTS-14Ab: a Neptune-sized transiting planet in the desert".ASTRONOMY & ASTROPHYSICS 646(2021).