2003AJ....126..385C

Query : 2003AJ....126..385C

2003AJ....126..385C - Astron. J., 126, 385-392 (2003/July-0)

Hubble Space Telescope ACS coronagraphic imaging of the circumstellar disk around HD 141569A.

CLAMPIN M., KRIST J.E., ARDILA D.R., GOLIMOWSKI D.A., HARTIG G.F., FORD H.C., ILLINGWORTH G.D., BARTKO F., BENITEZ N., BLAKESLEE J.P., BOUWENS R.J., BROADHURST T.J., BROWN R.A., BURROWS C.J., CHENG E.S., CROSS N.J.G., FELDMAN P.D., FRANX M., GRONWALL C., INFANTE L., KIMBLE R.A., LESSER M.P., MARTEL A.R., MENANTEAU F., MEURER G.R., MILEY G.K., POSTMAN M., ROSATI P., SIRIANNI M., SPARKS W.B., TRAN H.D., TSVETANOV Z.I., WHITE R.L. and ZHENG W.

Abstract (from CDS):

Multicolor coronagraphic images of the circumstellar disk around HD 141569A have been obtained with the Hubble Space Telescope Advanced Camera for Surveys. The B, V, and I images show that the disk's previously described multiple-ring structure is actually a continuous distribution of dust with a tightly wound spiral structure. Extending from the disk are two, more open spiral arms, one of which appears to reach the nearby binary star HD 141569BC. Diffuse dust is seen up to 1200 AU from HD 141569A. Although planets may exist in the inner region of the disk, tidal interaction with HD 141569BC seems more likely to be the cause of these phenomena. The disk appears redder than the star (B-V=0.21 and V-I=0.25), and its color is spatially uniform. A scattering asymmetry factor of g=0.25-0.35 is derived. The azimuthal density distribution is asymmetric, varying by a factor of ∼3 at some radii.

Abstract Copyright: ∼

Journal keyword(s): Stars: Circumstellar Matter - stars: individual (HD 141569A) - Stars: Pre-Main-Sequence

Simbad objects: 6

Full paper

View the references in ADS

Number of rows : 6

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	* bet Pic	PM*	05 47 17.0876901	-51 03 59.441135	4.13	4.03	3.86	3.74	3.58	A6V	2087	1
2	HD 100546	Be*	11 33 25.4408872296	-70 11 41.241297948		6.71	6.30		6.64	A0VaekB8_lB	894	1
3	HD 109573	TT*	12 36 01.0317461592	-39 52 10.220465388		5.786	5.774		5.81	A0V	684	1
4	* 4 Lib	Be*	14 43 13.5512958192	-24 59 51.911632968		5.69	5.73		5.82	A0IVe	44	0
5	NAME HD 141569BC	**	15 49 57.34536	-03 55 10.9992					10.40	G0Ve	28	0
6	HD 141569	Or*	15 49 57.7482550392	-03 55 16.341617064	7.22	7.20	7.12	7.00	7.04	A2VekB9mB9(_lB)	578	0

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