2021MNRAS.507.2220G

Query : 2021MNRAS.507.2220G

2021MNRAS.507.2220G - Mon. Not. R. Astron. Soc., 507, 2220-2240 (2021/October-3)

HD 183579b: a warm sub-Neptune transiting a solar twin detected by TESS.

GAN T., BEDELL M., WANG S.X., FOREMAN-MACKEY D., MELENDEZ J., MAO S., STASSUN K.G., HOWELL S.B., ZIEGLER C., WITTENMYER R.A., HELLIER C., COLLINS K.A., SHPORER A., RICKER G.R., VANDERSPEK R., LATHAM D.W., SEAGER S., WINN J.N., JENKINS J.M., ADDISON B.C., BALLARD S., BARCLAY T., BEAN J.L., BOWLER B.P., BRICENO C., CROSSFIELD I.J.M., DITTMAN J., HORNER J., JENSEN E.L.N., KANE S.R., KIELKOPF J., KREIDBERG L., LAW N., MANN A.W., MENGEL M.W., MORGAN E.H., OKUMURA J., OSBORN H.P., PAEGERT M., PLAVCHAN P., SCHWARZ R.P., SHIAO B., SMITH J.C., SPINA L., TINNEY C.G., TORRES G., TWICKEN J.D., VEZIE M., WANG G., WRIGHT D.J. and ZHANG H.

Abstract (from CDS):

We report the discovery and characterization of a transiting warm sub-Neptune planet around the nearby bright (V = 8.75 mag, K = 7.15 mag) solar twin HD 183579, delivered by the Transiting Exoplanet Survey Satellite (TESS). The host star is located 56.8 ± 0.1 pc away with a radius of R* = 0.97 ± 0.02 R☉ and a mass of M* = 1.03 ± 0.05 M☉. We confirm the planetary nature by combining space and ground-based photometry, spectroscopy, and imaging. We find that HD 183579b (TOI-1055b) has a radius of Rp = 3.53 ± 0.13 R⊕ on a 17.47 d orbit with a mass of Mp = 11.2 ± 5.4 M⊕ (3σ mass upper limit of 27.4 M⊕). HD 183579b is the fifth brightest known sub-Neptune planet system in the sky, making it an excellent target for future studies of the interior structure and atmospheric properties. By performing a line-by-line differential analysis using the high-resolution and signal-to-noise ratio HARPS spectra, we find that HD 183579 joins the typical solar twin sample, without a statistically significant refractory element depletion.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): planets and satellites: detection - planets and satellites: gaseous planets - planets and satellites: individual: (HD 183579, HIP 96160, TIC 320004517, TOI 1055) - stars: abundances - stars: solar type

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 3167c Pl 00 34 57.5242131960 +04 22 53.284093032           ~ 82 0
2 HD 16008 PM* 02 33 49.0261666392 -19 36 42.502173696   9.24 8.58     G5V 90 0
3 HD 21749b Pl 03 26 59.2226447548 -63 29 56.762928961           ~ 49 0
4 HD 95338b Pl 10 59 26.3040013933 -56 37 22.947342987           ~ 22 0
5 Ross 905b Pl 11 42 11.0933350978 +26 42 23.650782778           ~ 913 1
6 K2-231 * 19 16 22.0389081336 -15 46 15.980203956           ~ 40 0
7 HD 183579 PM* 19 33 08.5946288376 -54 31 56.540284248   9.33 8.68     G5V 80 0
8 HD 183579b Pl 19 33 08.5946288376 -54 31 56.540284248           ~ 12 0
9 Kepler-418 Er* 19 37 44.0464719096 +38 21 19.662546276       14.689   G7 61 0
10 Kepler-11 Er* 19 48 27.6226218768 +41 54 32.903163504   14.635 13.838 13.742   G2V 377 1
11 Kepler-539 Er* 19 56 29.3871979920 +41 52 00.317369676   13.150 12.519 12.342   G2V 82 0
12 CD-35 15858 ** 23 36 40.32 -34 36 40.4           ~ 10 0

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