2004ApJS..154..458S

Query : 2004ApJS..154..458S

2004ApJS..154..458S - Astrophys. J., Suppl. Ser., 154, 458-462 (2004/September-0)

First Look at the Fomalhaut debris disk with the Spitzer Space Telescope.

STAPELFELDT K.R., HOLMES E.K., CHEN C., RIEKE G.H., SU K.Y.L., HINES D.C., WERNER M.W., BEICHMAN C.A., JURA M., PADGETT D.L., STANSBERRY J.A., BENDO G., CADIEN J., MARENGO M., THOMPSON T., VELUSAMY T., BACKUS C., BLAYLOCK M., EGAMI E., ENGELBRACHT C.W., FRAYER D.T., GORDON K.D., KEENE J., LATTER W.B., MEGEATH T., MISSELT K., MORRISON J.E., MUZEROLLE J., NORIEGA-CRESPO A., VAN CLEVE J. and YOUNG E.T.

Abstract (from CDS):

We present Spitzer Space Telescope early release observations of Fomalhaut, a nearby A-type star with dusty circumstellar debris. The disk is spatially resolved at 24, 70, and 160 µm using the Multiband Imaging Photometer for Spitzer (MIPS). While the disk orientation and outer radius are comparable to values measured in the submillimeter, the disk inner radius cannot be precisely defined: the central hole in the submillimeter ring is at least partially filled with emission from warm dust, seen in Spitzer Infrared Spectrograph (IRS) 17.5-34 µm spectra and MIPS 24 µm images. The disk surface brightness becomes increasingly asymmetric toward shorter wavelengths, with the south-southeast ansa always brighter than the north-northwest one. This asymmetry may reflect perturbations on the disk by an unseen interior planet.

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Journal keyword(s): Stars: Circumstellar Matter - Infrared: Stars - Stars: Planetary Systems - Stars: Individual: Name: Fomalhaut

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 * bet Ari SB* 01 54 38.41099 +20 48 28.9133 2.88 2.78 2.65 2.51 2.43 kA4hA5mA5Va 414 1
2 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1533 0
3 * alf Gem B SB* 07 34 36.100452 +31 53 18.57117     3.0     kA0hA2:mA1IVs 290 1
4 * bet Car PM* 09 13 11.97746 -69 43 01.9473 1.72 1.69 1.69 1.63 1.61 A1III- 223 1
5 * gam UMa Em* 11 53 49.8473166 +53 41 41.135025 2.440 2.450 2.440 2.44 2.47 A0Ve+K2V 400 0
6 * gam Cen ** 12 41 31.04008 -48 57 35.5375 2.15 2.16 2.17 2.14 2.14 A1IV+A0IV 128 0
7 * alf02 Lib SB* 14 50 52.71309 -16 02 30.3955 2.99 2.90 2.75 2.61 2.57 kA2hA5mA4IV-V 218 0
8 HD 217382 PM* 22 54 24.9707515824 +84 20 46.231215936   6.112 4.684     K4III 85 0
9 * alf PsA PM* 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1237 3

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