2009A&A...508..717S

C.D.S. - SIMBAD4 rel 1.7 - 2021.04.23CEST18:50:47

2009A&A...508..717S - Astronomy and Astrophysics, volume 508, 717-724 (2009/12-3)

Chandra observation of Cepheus A: the diffuse emission of HH 168 resolved.

SCHNEIDER P.C., GUENTHER H.M. and SCHMITT J.H.M.M.

Abstract (from CDS):

X-ray emission from massive stellar outflows has been detected in several cases. We present a Chandra observation of HH 168 and show that the soft X-ray emission from a plasma of 0.55keV within HH 168 is diffuse. The X-ray emission is observed on two different scales: Three individual, yet extended, regions are embedded within a complex of low X-ray surface brightness. Compared to the bow shock the emission is displaced against the outflow direction. We show that there is no significant contribution from young stellar objects (YSOs) and discuss several shock scenarios that can produce the observed signatures. We establish that the X-ray emission of HH 168 is excited by internal shocks in contrast to simple models, which expect the bow shock to be the most X-ray luminous.

Abstract Copyright: ∼

Journal keyword(s): stars: winds, outflows - X-rays: ISM - Herbig-Haro objects - ISM: jets and outflows - ISM: individual objects: HH 168

Simbad objects: 21

Full paper

View the reference in ADS

Number of rows : 21

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2021	#notes
1	V* DG Tau	Or*	04 27 04.6913654419	+26 06 16.041555299	13.57	13.97	10.50	12.28		K6Ve	950	1
2	RAFGL 5123	Y*O	04 31 34.07736	+18 08 04.9020						K3V/M3III	819	0
3	[LB2000] 154-041	*	05 35 15.45928	-05 20 40.6911						~	51	0
4	NAME Trapezium Cluster	As*	05 35 16.5	-05 23 14						~	1505	1
5	M 42	HII	05 35 17.3	-05 23 28						~	3789	0
6	HH 2	HH	05 36.4	-06 47						~	335	1
7	HD 163296	Ae*	17 56 21.2882188601	-21 57 21.872343282	7.00	6.93	6.85	6.86	6.67	A1Vep	852	0
8	NAME HH 80-81	HH	18 19 06	-20 51.4						~	198	0
9	HH 80	HH	18 19 06.1	-20 51 49						~	96	0
10	NAME Cepheus A East	SFR	22 54.3	+61 46						~	65	0
11	2MASS J22560169+6202006	*	22 56 01.70	+62 02 00.6						~	7	0
12	2MASS J22560630+6201596	*	22 56 06.30	+62 01 59.7						~	6	0
13	HH 168F	*	22 56 06.58	+62 02 06.8						~	4	0
14	NAME HW Object	HH	22 56 08.80	+62 01 44.4						~	10	0
15	[HW84] 1a	Rad	22 56 16.4	+62 01 39						~	12	0
16	NAME Cepheus A	SFR	22 56 17.9	+62 01 49						~	706	2
17	NAME Cep A HW 2	Y*O	22 56 17.9	+62 01 49						B0.5	201	0
18	[PTU2009] h11	Rad	22 56 18.0	+62 01 46						~	26	0
19	HH 168	HH	22 56 18.0	+62 01 47						~	89	0
20	HH 169	HH	22 56 34.8	+62 02 36						~	5	0
21	HH 174	HH	22 56 58.5	+62 01 42						~	4	0

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