2019ApJ...878L..37F

Query : 2019ApJ...878L..37F

2019ApJ...878L..37F - Astrophys. J., 878, L37-L37 (2019/June-3)

CO detected in CI Tau b: hot start implied by planet mass and M_K.

FLAGG L., JOHNS-KRULL C.M., NOFI L., LLAMA J., PRATO L., SULLIVAN K., JAFFE D.T. and MACE G.

Abstract (from CDS):

We acquired high-resolution infrared spectra of CI Tau, the host star of one of the few young planet candidates amenable to direct spectroscopic detection. We confirm the planet's existence with a direct detection of CO in the planet's atmosphere. We also calculate a mass of 11.6 M_J based on the amplitude of its radial velocity variations. We estimate its flux contrast with its host star to get an absolute magnitude estimate for the planet of 8.17 in the K-band. This magnitude implies the planet formed via a "hot start" formation mechanism. This makes CI Tau b the youngest confirmed exoplanet as well as the first exoplanet around a T Tauri star with a directly determined, model-independent dynamical mass.

Journal keyword(s): planetary systems - planets and satellites: formation - stars: individual: CI Tau

Simbad objects: 16

Full paper

View the references in ADS

Number of rows : 16

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	2MASS J02495436-0558015	BD*	02 49 54.36624	-05 58 01.5816						L2	9	0
2	NAME V* V1069 Tau b	Pl	04 18 51.7034617249	+17 23 16.579842927						~	14	0
3	V* FW Tau	Or*	04 29 29.7076208400	+26 16 52.768899480				15.85		M5.5	135	0
4	NAME V830 Tau b	Pl	04 33 10.0299730541	+24 33 43.255853678						~	31	0
5	V* V830 Tau	TT*	04 33 10.0300557048	+24 33 43.255480860		13.91	12.08	11.30		M0-1	205	1
6	V* CI Tau	Or*	04 33 52.0143963264	+22 50 30.094090908	14.97	15.09	13.80			K4IVe	337	1
7	NAME CI Tau b	Pl	04 33 52.0144455735	+22 50 30.093741884						~	23	0
8	* 51 Eri b	Pl	04 37 36.1323118067	-02 28 24.778826936						~	159	0
9	* bet Pic b	Pl	05 47 17.0876901	-51 03 59.441135						~	464	1
10	HD 95086b	Pl	10 57 03.0216129217	-68 40 02.446874288						~	93	1
11	TWA 27	LM*	12 07 33.4675524840	-39 32 54.016625184			19.95	17.99	15.88	M8IVe	331	0
12	HD 116434C	BD*	13 24 36.13	-51 30 16.7						L5-7	63	1
13	RX J1609.5-2105B	LM*	16 09 30.377	-21 04 56.97						~	114	0
14	NAME GSC 06214-00210B	LM*	16 21 54.678	-20 43 11.33						~	80	0
15	NAME ROXs 42Bb	LM*	16 31 14.93	-24 32 43.7						M8-L0	49	0
16	ROXs 42B	TT*	16 31 15.0183260016	-24 32 43.715044896			14.27	13.03	11.72	~	54	0

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