2010A&A...518L.127M

Query : 2010A&A...518L.127M

2010A&A...518L.127M - Astronomy and Astrophysics, volume 518, L127-127 (2010/7-2)

GAS in Protoplanetary Systems (GASPS). I. First results.

MATHEWS G.S., DENT W.R.F., WILLIAMS J.P., HOWARD C.D., MEEUS G., RIAZ B., ROBERGE A., SANDELL G., VANDENBUSSCHE B., DUCHENE G., KAMP I., MENARD F., MONTESINOS B., PINTE C., THI W.F., WOITKE P., ALACID J.M., ANDREWS S.M., ARDILA D.R., ARESU G., AUGEREAU J.-C., BARRADO D., BRITTAIN S., CIARDI D.R., DANCHI W., EIROA C., FEDELE D., GRADY C.A., DE GREGORIO-MONSALVO I., HERAS A., HUELAMO N., KRIVOV A., LEBRETON J., LISEAU R., MARTIN-ZAIDI C., MENDIGUTIA I., MORA A., MORALES-CALDERON M., NOMURA H., PANTIN E., PASCUCCI I., PHILLIPS N., PODIO L., POELMAN D.R., RAMSAY S., RICE K., RIVIERE-MARICHALAR P., SOLANO E., TILLING I., WALKER H., WHITE G.J. and WRIGHT G.

Abstract (from CDS):

Circumstellar discs are ubiquitous around young stars, but rapidly dissipate their gas and dust on timescales of a few Myr. The Herschel Space Observatory allows for the study of the warm disc atmosphere, using far-infrared spectroscopy to measure gas content and excitation conditions, and far-IR photometry to constrain the dust distribution. We aim to detect and characterize the gas content of circumstellar discs in four targets as part of the Herschel science demonstration phase. We carried out sensitive medium resolution spectroscopy and high sensitivity photometry at λ∼60-190 µm using the Photodetector Array Camera and Spectrometer instrument on the Herschel Space Observatory. We detect [OI] 63µm emission from the young stars HD 169142, TW Hydrae, and RECX 15, but not HD 181327. No other lines, including [CII] 158 and [OI] 145, are significantly detected. All four stars are detected in photometry at 70 and 160 µm. Extensive models are presented in associated papers.

Abstract Copyright: ∼

Journal keyword(s): stars: pre-main sequence - protoplanetary disks - infrared: stars

Simbad objects: 11

Full paper

View the references in ADS

Number of rows : 11

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	NAME THA	As*	00 00	-62.0					~	438	0
2	* 49 Cet	PM*	01 34 37.7786780856	-15 40 34.898673000	5.667	5.607		5.54	A1V	279	0
3	NAME Taurus Complex	SFR	04 41.0	+25 52					~	4094	0
4	NAME eta Cha Association	OpC	08 42 33	-78 57.8					~	351	0
5	V* ET Cha	Or*	08 43 18.5853516024	-79 05 18.232481832		13.97			M2	77	0
6	V* TW Hya	TT*	11 01 51.9053285064	-34 42 17.033218380	11.94	10.50	10.626	9.18	K6Ve	1787	1
7	NAME TW Hya Association	As*	11 01.9	-34 42					~	907	0
8	NAME beta Pic Moving Group	MGr	14 30	-42.0					~	710	0
9	NAME Upper Sco Association	As*	16 12	-23.4					~	1252	1
10	HD 169142	Ae*	18 24 29.7799891464	-29 46 49.327400568	8.42	8.16			F1VekA3mA3_lB?	408	2
11	HD 181327	PM*	19 22 58.9437222504	-54 32 16.975668624	7.50	7.04		6.49	F6V	268	0

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