2008A&A...488L..13S


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET21:55:22

2008A&A...488L..13S - Astronomy and Astrophysics, volume 488, L13-16 (2008/9-3)

The nature of the soft X-ray source in DG Tauri.

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

Abstract (from CDS):

The classical T Tauri star DG Tau shows all typical signatures of X-ray activity and, in particular, harbors a resolved X-ray jet. DG Tau's jet is one of the most well studied jets of young stellar objects, having been observed for more than 25 years by a variety of instruments. We demonstrate that its soft and hard X-ray components are separated spatially by approximately 0.2 arcsec by deriving the spatial offset between both components from the event centroids of the soft and hard photons utilizing the intrinsic energy-resolution of the Chandra ACIS-S detector. We also demonstrate that this offset is physical and cannot be attributed to an instrumental origin or to low counting statistics. Furthermore, the location of the derived soft X-ray emission peak coincides with emission peaks observed for optical emission lines, suggesting that both soft X-rays and optical emission have the same physical origin.

Abstract Copyright:

Journal keyword(s): stars: individual: DG Tauri - stars: winds, outflows - X-rays: stars - stars: pre-main sequence

Simbad objects: 22

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Number of rows : 22

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* FS Tau Or* 04 22 02.1925017485 +26 57 30.331063489 17.57   14.10 15.63   M3.5e+M0e 263 0
2 LP 415-636 Er* 04 22 08.2466621967 +19 15 21.913009250   12.67 12.55 12.86   M3 23 0
3 [BLH2002] KPNO-Tau 13 TT* 04 26 57.3162958061 +26 06 28.340060968           M5Ve 38 0
4 V* DG Tau Or* 04 27 04.6913654419 +26 06 16.041555299 13.57 13.97 10.50 12.28   K6Ve 947 1
5 V* V1981 Ori Or* 05 34 33.9561265732 -05 34 51.313853862 18.577 17.117 15.931 14.74 13.205 K8 33 0
6 Brun 311 Y*O 05 34 35.1486521767 -05 32 10.396023129 15.141 14.151 13.301 12.46 11.467 K2IV 33 0
7 Parenago 1606 Y*O 05 34 46.9226713396 -05 35 07.882771642 18.790 16.995 15.764 14.38 12.859 M1.5 28 0
8 HD 36917 Or* 05 34 46.9833806135 -05 34 14.574708752   8.13 8.03     B9III/IV 137 0
9 2MASS J05344828-0532351 Y*O 05 34 48.2841063496 -05 32 35.108056546   20.539 19.260 17.37 14.762 M2.5 29 0
10 2MASS J05352360-0628244 Y*O 05 35 23.6026962362 -06 28 24.417481229           M4 11 0
11 CD-33 7795 TT* 11 31 55.2603055856 -34 36 27.214242128   12.97 11.524 11.150 9.150 M2Ve 178 0
12 V* V1155 Cen BY* 13 06 17.8394295863 -48 27 45.439479910   11.62 10.80     ~ 19 0
13 NAME Proxima Centauri Er* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1016 0
14 CD-44 9590B * 14 45 56.2 -44 52 32     12.93     ~ 11 0
15 BD+16 2708 Er* 14 54 29.2359453437 +16 06 03.798840236 12.86 11.686 10.150 9.116 7.872 M3V 250 1
16 CXOSEXSI J175823.5+663950 QSO 17 58 23.5664419575 +66 39 50.438229402       19.660   ~ 5 0
17 HD 179949 BY* 19 15 33.2300861317 -24 10 45.673372382   6.772 6.237     F8V 359 1
18 Cl* NGC 6791 SBG 5361 * 19 20 44.92 +37 46 40.2 19.46 20.33 20.564     ~ 5 0
19 Cl* NGC 6791 SBG 9315 * 19 20 56.31 +37 46 13.1           ~ 2 0
20 G 208-44 Er* 19 53 54.4821159649 +44 24 51.341564299   15.31 13.126 13.083 9.78 M5.5Ve 189 1
21 G 208-45 Er* 19 53 55.1388332012 +44 24 54.144273353   15.97 13.99 14.3 10.27 M6V 164 0
22 1WGA J2203.9-5647 X 22 03 58.4 -56 47 14           ~ 3 1

    Equat.    Gal    SGal    Ecl

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