2001A&A...371..643S

Query : 2001A&A...371..643S

2001A&A...371..643S - Astronomy and Astrophysics, volume 371643-651 (2001/5-4)

A representative sample of Be stars III: (H) band spectroscopy.

STEELE I.A. and CLARK J.S.

Abstract (from CDS):

We present H band (1.53 µm-1.69 µm) spectra of 57 isolated Be stars of spectral types O9-B9 and luminosity classes III, IV & V. The HI Brackett (n-4) series is seen in emission from Br-11-18, and FeII emission is also apparent for a subset of those stars with HI emission. No emission from species with a higher excitation temperature, such as HeII or CIII is seen, and no forbidden line emission is present. A subset of 12 stars show no evidence for emission from any species; these stars appear indistinguishable from normal B stars of a comparable spectral type. In general the line ratios constructed from the transitions in the range Br-11-18 do not fit case B recombination theory particularly well. Strong correlations between the line ratios with Br-γ and spectral type are found. These results most likely represent systematic variations in the temperature and ionization of the circumstellar disc with spectral type. Weak correlations between the line widths and projected rotational velocity of the stars are observed; however no systematic trend for increasing line width through the Brackett series is observed.

Abstract Copyright: ∼

Journal keyword(s): stars: emission-line, Be - infrared: stars

Simbad objects: 57

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Number of rows : 57
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * omi Cas Be* 00 44 43.5186007265 +48 17 03.731037403 3.91 4.44 4.50 4.45 4.50 B5IIIe 291 0
2 * phi And Be* 01 09 30.12562 +47 14 30.4594 3.84 4.18 4.25 4.22 4.27 B5IIIe 244 0
3 HD 13669 Be* 02 15 02.6064837624 +55 47 35.598050808 7.84 8.25 7.90     B3IV-V 66 0
4 HD 13867 Be* 02 16 35.9953510392 +49 49 11.545139316 7.24 7.72 7.71     B5IIIe 45 0
5 HD 13831 Pu* 02 16 39.2180538048 +56 44 16.085742396 7.56 8.32 8.26     O9.5I 83 1
6 BD+56 473 Be* 02 16 57.7103678448 +57 07 48.730568772 8.68 9.31 8.0712   7.6517 B1III/Ve 91 1
7 HD 13890 Be* 02 17 08.2163055288 +56 46 11.096889888 8.06 8.64 8.6370     B2.0III 74 0
8 BD+56 493 Be* 02 18 18.3546298920 +56 51 02.232343764 9.15 9.95 8.7847   8.4218 B1IV/Ve 64 0
9 BD+56 511 Be* 02 18 47.9372995272 +57 04 02.189871156 8.97 9.49 8.2215   7.6884 B0-1Ve 69 0
10 BD+56 573 Be* 02 22 06.4431258264 +57 05 25.031082120 9.47 10.06 9.66     B2III-IVe 73 0
11 HD 14605 Be* 02 23 35.4361162152 +56 34 27.956112204 8.86 9.61 9.34     B0.5Vpe 81 0
12 HD 18552 Be* 03 00 11.8861086336 +38 07 54.197462964 5.67 6.05 6.11     B7IVe 94 0
13 HD 237056 Be* 03 02 37.8861049368 +57 36 46.065664296 10.739 9.38 8.90     B0.5:V:pe 64 0
14 HD 237060 Be* 03 04 30.5395753104 +59 26 46.691819088 9.34 9.47 9.20     B9V 23 0
15 * psi Per Be* 03 36 29.3797327450 +48 11 33.484405927 3.60 4.17 4.23     B5Ve 431 0
16 * 13 Tau Be* 03 42 18.9476782488 +19 42 00.918475956 5.41 5.68 5.69     B7Ve 107 0
17 HD 23552 Be* 03 48 18.0746021928 +50 44 12.357606372 5.88 6.20 6.14     B8V 93 0
18 * c Per Be* 04 08 39.6935695869 +47 42 45.038007366 3.45 4.00 4.03 3.91 3.93 B3Ve 394 0
19 BD-13 834 * 04 12 17.4168235272 -12 55 41.096173008   10.44 9.11     M0 11 0
20 HD 27846 Be* 04 25 50.0074882440 +46 14 01.898598516 7.95 8.36 8.09     B1.5V 44 0
21 * 228 Eri Be* 04 29 06.9254098152 -13 02 54.127769208 4.45 5.23 5.41 5.46 5.63 B2(V)ne 286 0
22 * 56 Eri Be* 04 44 05.3207274312 -08 30 12.852684720 4.97 5.75 5.81 5.72 5.74 B2(V)nne 186 0
23 HD 276738 Be* 04 45 51.3276189744 +43 59 39.820295148 9.68 9.93 9.70     B5 21 0
24 * psi01 Ori Be* 05 24 44.8273848312 +01 50 47.201915688 3.83 4.76 4.96 5.04 5.26 B1Vn 372 0
25 * ome Ori Be* 05 39 11.1457980782 +04 07 17.288290296 3.73 4.48 4.59 4.57 4.67 B3Ve 424 1
26 HD 39557 Be* 05 53 27.1389770880 +00 46 45.186195216   9.48 9.07     B9IV/V 33 0
27 HD 161103 HXB 17 44 45.7656635952 -27 13 44.478959340 8.44 9.23 9.13 9.12   B0.5III/IVe 95 0
28 HD 164741 bC* 18 03 44.0813322000 -25 18 45.077553432 8.74 9.48 9.19 9.57   B1III 56 0
29 HD 168797 Be* 18 21 28.4010720600 +05 26 08.560470876 5.47 6.09 6.13     B2Vne 127 0
30 HD 170682 Be* 18 31 24.2109018096 -19 09 31.025696112 8.06 8.20 7.95     B5III 63 0
31 HD 171406 Be* 18 33 23.0362685928 +30 53 31.594470396 5.96 6.429 6.534     B4Ve 71 0
32 HD 172158 Be* 18 39 30.2353707696 -21 57 56.003094144 7.86 8.06 7.95     B8II 39 0
33 HD 172252 Be* 18 39 39.8461314720 -11 52 43.031021520 9.68 10.09 9.42     B0V:e 54 0
34 HD 173371 Be* 18 44 55.9135229664 -00 22 24.364000632 6.56 6.852 6.882     B9III 57 0
35 HD 177015 Be* 19 03 33.1280578320 -20 07 42.923787204 7.32 7.78 7.80     B3/5Vn 41 0
36 HD 179343 Be* 19 12 03.2772493 +02 37 21.323563 6.84 7.03 6.92     B7/8(e)_sh 66 0
37 * bet02 Cyg Be* 19 30 45.3961817904 +27 57 54.989118612 4.69 5.01 5.11     B8Ve 170 0
38 HD 350559 Be* 19 46 57.6848957376 +18 14 55.954598856   10.86 10.55     B6III/Ve 21 0
39 HD 333226 Be* 20 00 33.3660931536 +30 22 53.282906976 10.18 10.60 10.26     B0 33 0
40 HD 333452 Be* 20 03 11.0159551848 +28 42 20.439333648 10.40 10.28 9.49     B0 30 0
41 HD 339483 Be* 20 04 00.7465521792 +26 16 16.759608024 9.26 9.50 8.98     B3 38 0
42 V* V372 Sge bC* 20 09 39.5945322600 +21 04 43.634595144   8.26 8.34     B0.5III-IV 46 0
43 HD 228438 Be* 20 13 50.2840675536 +36 37 22.551943476   8.699 8.37     B0.5III 37 0
44 HD 228658 Be* 20 16 08.5548415536 +37 33 23.055878664 10.09 10.43 10.24     B2II: 42 0
45 HD 194883 Be* 20 25 32.8111589400 +54 41 03.125874732 6.73 7.32 7.36     B2Ve 55 0
46 HD 195554 ** 20 29 27.1108477224 +56 04 05.490194052   5.846 5.912     B8.5V 96 1
47 HD 203356 Be* 21 19 44.9407030488 +53 57 05.385922920 8.200 8.340 8.080     B9 23 0
48 HD 205551 Be* 21 34 27.4633482288 +51 41 54.480749712 5.73 6.140 6.163     B7IIIe 66 0
49 HD 205618 Be* 21 35 44.4770094600 +29 44 43.892316780 7.25 8.13 8.16     B2Vne 49 0
50 HD 239758 Be* 21 44 34.0127758032 +59 03 25.740146700 9.23 9.68 9.43     B2III:nn 55 0
51 HD 207232 Be* 21 46 02.8278023904 +50 40 26.943635316   6.960 7.022     B9 35 0
52 * 25 Peg Be* 22 07 50.3038755192 +21 42 10.536282684 5.27 5.68 5.78     B7Vne 119 0
53 BD+54 2718 Be* 22 14 59.4823619352 +55 27 48.844035864 9.72 10.33 10.17     B2III 33 0
54 HD 211835 Be* 22 19 00.2400210672 +45 48 08.536691016 7.68 8.38 8.40     B3:Ve 53 0
55 EM* MWC 659 Be* 22 47 45.3690745128 +57 16 50.803242924 9.98 10.42 10.15     B0.5Ve 31 0
56 HD 216851 Be* 22 55 47.0642243040 +43 33 33.443380440 7.55 8.02 7.97     B3V:n 59 0
57 HD 217050 Be* 22 57 04.5020619144 +48 41 02.645623680 4.81 5.34 5.43     B4IIIpe 340 1

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