1994A&A...292..152Z


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.27CET22:28:33

1994A&A...292..152Z - Astronomy and Astrophysics, volume 292, 152-164 (1994/12-1)

X-ray emission from Herbig Ae/Be stars: a ROSAT survey.

ZINNECKER H. and PREIBISCH T.

Abstract (from CDS):

We have observed 14 Herbig Ae/Be stars in X-rays with the ROSAT PSPC (0.1-2.4keV). In addition, we obtained data from the ROSAT archive for 7 Herbig Ae/Be stars. As a result, 11 of the 21 Herbig Ae/Be stars studied here have been detected as X-ray sources, among them AB Aur, HR 5999/6000, and Z CMa. This is surprising, since Ae/Be stars, being predominantly radiative, are unlikely to sustain dynamo magnetic fields and coronal heating. We have investigated possible correlations between the X-ray luminosity and other stellar parameters like Lbol, spectral type, stellar rotation and winds. We suspect that the origin of the X-ray emission is likely to be related to the stellar wind, although other explanations (e.g. unresolved T Tauri companions) are also discussed. Some Ae/Be stars are known to be the exciting sources of high-velocity jets, but none of the jets themselves were detected in X-rays. In several cases, the X-ray images revealed a small cluster of sources, presumably lower mass pre-main-sequence objects that surround the more massive Ae/Be stars.

Abstract Copyright:

Journal keyword(s): X-rays: stars - stars: emission-line - stars: stellar coronae - stars: pre-main-sequence

Simbad objects: 23

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Number of rows : 23

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 EM* LkHA 198 Ae* 00 11 25.8510585961 +58 49 28.677348580   14.65 13.79 14.03   B9e 220 0
2 V* V376 Cas Ae* 00 11 26.5610557523 +58 50 03.750169804           A3/F2e 95 1
3 NAME AFGL 4029 IRS 1 Y*O 03 01 29.2 +60 29 12           ~ 107 1
4 NAME W 5 East MoC 03 01 32 +60 29.2           ~ 120 2
5 V* V892 Tau Ae* 04 18 40.6120892867 +28 19 15.641672501   16.6 14.69 14.35   A0Ve 259 1
6 EM* LkHA 101 Em* 04 30 14.438 +35 16 24.03   17.91 15.71 13.33   F 293 1
7 V* AB Aur Ae* 04 55 45.8459978418 +30 33 04.293281305 7.20 7.16 7.05 6.96 6.70 A0Ve 914 2
8 BD-06 1253 Ae* 05 36 25.4313245626 -06 42 57.684449700   11.65 10.9 10.29   A1e 405 1
9 * ome Ori Be* 05 39 11.1463172 +04 07 17.279475 3.73 4.48 4.59 4.57 4.67 B3Ve 387 1
10 EM* LkHA 215 Ae* 06 32 41.7734957477 +10 09 34.205635971 11.41 11.28 10.70     B7IIne 120 0
11 HD 52721 Ae* 07 01 49.50977 -11 18 03.3219 5.88 6.65 6.59 7.52   B2Vne 201 0
12 V* Z CMa Ae* 07 03 43.1588002461 -11 33 06.230351311 10.51 9.99 8.80     B5/8eq+F5/7 526 3
13 HD 97048 Ae* 11 08 03.3105687971 -77 39 17.491180130 9.03 8.76 9.00   8.64 A0Vep 447 0
14 V* V856 Sco dS* 16 08 34.2868591379 -39 06 18.326059778 7.66 7.41 7.05 6.92   A7 348 0
15 V* V1027 Sco a2* 16 08 34.5611688784 -39 05 34.277434873   6.552 6.629 6.66   A0/3III 174 0
16 V* TY CrA Ae* 19 01 40.8312189956 -36 52 33.801844387 10.03 9.92 9.39     B9e 267 0
17 V* R CrA Ae* 19 01 53.6850227874 -36 57 08.145519972 12.781 12.651 11.917 11.242 10.412 B5IIIpe 444 1
18 V* T CrA Ae* 19 01 58.7901571143 -36 57 50.329832417     11.67     F0 153 0
19 EM* LkHA 349 Or* 21 36 50.721 +57 31 10.70   15.11 13.58   10.91 F9e 46 1
20 EM* LkHA 234 Ae* 21 43 06.8214472757 +66 06 54.199354231 13.65 13.61 12.73 11.98 11.20 B5Ve 275 0
21 BD+46 3471 Ae* 21 52 34.0992388111 +47 13 43.600551484 10.72 10.56 10.15     A0.5IIIer 193 1
22 EM* LkHA 257 Ae* 21 54 18.7802039069 +47 12 09.667376789 15.195 13.87 13.16     B5/A2e 49 0
23 EM* MWC 1080 Ae* 23 17 25.5890248379 +60 50 43.452566559   13.24 11.542     B0eq 306 0

    Equat.    Gal    SGal    Ecl

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2020.02.27-22:28:33

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