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| Query : 2009MNRAS.392..383J |
2009MNRAS.392..383J - Mon. Not. R. Astron. Soc., 392, 383-390 (2009/January-1)
Circumstellar disc geometry constrained by infrared line fluxes.
JONES C.E., MOLAK A., SIGUT T.A.A., DE KOTER A., LENORZER A. and POPA S.C.
Abstract (from CDS):
Lenorzer et al. introduce ratios of hydrogen infrared recombination lines as a diagnostic tool to constrain the spatial distribution and physical condition of circumstellar material around hot massive stars. They demonstrate that the observed line flux ratios Hu14/Brα and Hu14/Pfγ from different types of objects associated with circumstellar material, such as Be stars, B[e] stars, and Luminous Blue Variable (LBV) stars are well separated in a diagnostic diagram. In this paper, we investigate this diagnostic tool using a non-LTE disc code developed by Sigut & Jones focusing on Be discs. We find good agreement between the empirical and predicted locations of Be stars in the Hu14/Brα versus Hu14/Pfγ diagram and show that indeed this diagnostic tool can be used to constrain basic properties of the discs of these stars.
Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS
Journal keyword(s): circumstellar matter - stars: early-type - stars: emission-line, Be
Simbad objects: 15
| Number of rows : 15 |
| 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 | * gam Cas | HXB | 00 56 42.5310945 | +60 43 00.264089 | 1.18 | 2.29 | 2.39 | 2.32 | 2.40 | B0.5IVpe | 1253 | 0 |
| 2 | * alf Eri | Be* | 01 37 42.84548 | -57 14 12.3101 | -0.36 | 0.30 | 0.46 | 0.49 | 0.60 | B6Vpe | 495 | 1 |
| 3 | HD 45677 | Be* | 06 28 17.4219710352 | -13 03 11.128860972 | 7.86 | 8.52 | 8.50 | 8.11 | 8.01 | B2IV/V[e] | 343 | 0 |
| 4 | * kap CMa | Be* | 06 49 50.4591124672 | -32 30 30.523820933 | 2.73 | 3.68 | 3.89 | 3.91 | 4.05 | B1.5Ve | 298 | 0 |
| 5 | V* HZ CMa | Be* | 06 50 23.3482557912 | -31 42 21.808309320 | 5.829 | 5.747 | B6IVe+A | 96 | 0 | |||
| 6 | * ome CMa | Be* | 07 14 48.6540133346 | -26 46 21.603204215 | 2.90 | 3.64 | 3.82 | 3.80 | 3.90 | B2.5Ve | 373 | 0 |
| 7 | * eta Car | s*b | 10 45 03.545808 | -59 41 03.95124 | 6.37 | 7.03 | 6.48 | 6.123 | 4.41 | LBV | 2543 | 0 |
| 8 | * del Cen | Be* | 12 08 21.4976373 | -50 43 20.738614 | 1.51 | 2.39 | 2.52 | 2.48 | 2.62 | B2Vne | 320 | 0 |
| 9 | * 12 Vul | Be* | 19 51 04.1083085616 | +22 36 36.172997964 | 4.15 | 4.84 | 4.96 | 4.98 | 5.12 | B2.5Ve | 192 | 0 |
| 10 | * b02 Cyg | Be* | 20 09 25.6190611128 | +36 50 22.633958400 | 4.03 | 4.80 | 4.93 | B2.5Ve | 281 | 0 | ||
| 11 | EM* MWC 349 | ** | 20 32 45.499080 | +40 39 36.74124 | 15.88 | 13.15 | 12.13 | Bep | 837 | 0 | ||
| 12 | HD 200775 | Ae* | 21 01 36.9205762896 | +68 09 47.789578836 | 7.34 | 7.754 | 7.427 | 8.13 | B2Ve | 582 | 0 | |
| 13 | * bet Cep | bC* | 21 28 39.5968513 | +70 33 38.574681 | 2.05 | 3.01 | 3.23 | 3.33 | 3.55 | B0.5IIIs | 756 | 0 |
| 14 | HD 206773 | Be* | 21 42 24.1853979312 | +57 44 09.795762276 | 6.30 | 7.10 | 6.87 | B0V:pe | 178 | 0 | ||
| 15 | * omi Aqr | Be* | 22 03 18.8440617830 | -02 09 19.313835540 | 4.22 | 4.64 | 4.69 | 4.70 | 4.74 | B5V | 279 | 0 |
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