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


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.04CET23:29:27

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

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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 947 1
2 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 818 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           ~ 1498 1
5 M 42 HII 05 35 17.3 -05 23 28           ~ 3777 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 843 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           ~ 64 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           ~ 704 2
17 NAME Cep A HW 2 Y*O 22 56 17.9 +62 01 49           B0.5 200 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

    Equat.    Gal    SGal    Ecl

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2021.03.04-23:29:27

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