2010A&A...518L.141L


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST00:50:12

2010A&A...518L.141L - Astronomy and Astrophysics, volume 518, L141-141 (2010/7-2)

Herschel PACS and SPIRE imaging of CW Leonis.

LADJAL D., BARLOW M.J., GROENEWEGEN M.A.T., UETA T., BLOMMAERT J.A.D.L., COHEN M., DECIN L., DE MEESTER W., EXTER K., GEAR W.K., GOMEZ H.L., HARGRAVE P.C., HUYGEN R., IVISON R.J., JEAN C., KERSCHBAUM F., LEEKS S.J., LIM T.L., OLOFSSON G., POLEHAMPTON E., POSCH T., REGIBO S., ROYER P., SIBTHORPE B., SWINYARD B.M., VANDENBUSSCHE B., WAELKENS C. and WESSON R.

Abstract (from CDS):

Herschel PACS and SPIRE images have been obtained over a 30'x30' area around the well-known carbon star CW Leo (IRC +10216). An extended structure is found in an incomplete arc of ∼22' diameter, which is cospatial with the termination shock due to interaction with the interstellar medium (ISM) as defined by Sahai & Chronopoulos (2010ApJ...711L..53S)from ultraviolet GALEX images. Fluxes are derived in the 70, 160, 250, 350, and 550µm bands in the region where the interaction with the ISM takes place, and this can be fitted with a modified black body with a temperature of 25±3K. Using the published proper motion and radial velocity for the star, we derive a heliocentric space motion of 25.1km/s. Using the PACS and SPIRE data and the analytical formula of the bow shock structure, we infer a de-projected standoff distance of the bow shock of R0=(8.0 ±0.3)x1017cm. We also derive a relative velocity of the star with respect to the ISM of (106.6 ±8.7)/sqrt(nISM)km/s, where nISM is the number density of the local ISM.

Abstract Copyright:

Journal keyword(s): circumstellar matter - stars: AGB and post-AGB - stars: carbon - stars: mass-loss - stars: individual: CW Leo

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * omi Cet Mi* 02 19 20.79210 -02 58 39.4956   7.63 6.53 5.03   M5-9IIIe+DA 1438 0
2 IRC +10216 C* 09 47 57.40632 +13 16 43.5648     10.96     C9,5e 2134 0
3 V* R Hya Mi* 13 29 42.7818674 -23 16 52.774679 7.26 6.58 4.97 2.27 -0.15 M6-9e 459 0
4 M 57 PN 18 53 35.0969571234 +33 01 44.883146221   15.405 15.769 15.901 16.062 DA(O?) 790 2
5 V* R Cas Mi* 23 58 24.8700291935 +51 23 19.691977266 6.71 6.63 4.80     M6.5-9e 677 0

    Equat.    Gal    SGal    Ecl

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2020.07.13-00:50:12

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