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| Query : 2016AcA....66..469K |
2016AcA....66..469K - Acta Astron., 66, 469-480 (2016/December-0)
Gray Extinction in the Orion Trapezium.
KRELOWSKI J., GALAZUTDINOV G.A., STROBEL A. and MULAS G.
Abstract (from CDS):
We estimated distances to several Orion Trapezium stars using our CaII-method and confirm the distance recommended by Menten et al. However, we found that in the case of HD 37020 both individualdistances (based on the trigonometric VLBI parallax and/or CaII-method) differ from the spectrophotometric distance by a factor of 2.5. We interpret this fact as a result of presence of gray (neutral) extinction of about 1.8 mag in front of this star. The correctness of the applied spectral type/ luminosity class, Sp/L, (based on new original spectra from HARPS-N) and measurements of color indices is discussed.
Abstract Copyright: ∼
Journal keyword(s): ISM: clouds - dust, extinction
Simbad objects: 18
| Number of rows : 18 |
| 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 | Cl Melotte 22 | OpC | 03 46 38.0 | +24 10 41 | ~ | 3679 | 0 | |||||
| 2 | NAME Taurus Cluster | OpC | 04 24 03.905 | +26 53 24.40 | ~ | 79 | 0 | |||||
| 3 | NAME Orion Nebula Cluster | OpC | 05 35.0 | -05 29 | ~ | 2514 | 0 | |||||
| 4 | * tet01 Ori A | Ae* | 05 35 15.8254015008 | -05 23 14.334699480 | 5.87 | 6.75 | 6.73 | 6.42 | 6.21 | B0V | 508 | 0 |
| 5 | * tet01 Ori C | SB* | 05 35 16.4662967280 | -05 23 22.921811880 | 4.20 | 5.15 | 5.13 | 4.91 | 4.73 | O7Vp | 1479 | 1 |
| 6 | NAME Ori Trapezium | OpC | 05 35 16.5 | -05 23 14 | ~ | 1708 | 1 | |||||
| 7 | M 42 | HII | 05 35 16.8 | -05 23 15 | ~ | 4411 | 0 | |||||
| 8 | * tet01 Ori D | Y*O | 05 35 17.2574479992 | -05 23 16.570738104 | 6.08 | 6.79 | 6.70 | 6.40 | 6.20 | B1.5Vp | 340 | 0 |
| 9 | * bet Pic | PM* | 05 47 17.0876901 | -51 03 59.441135 | 4.13 | 4.03 | 3.86 | 3.74 | 3.58 | A6V | 2087 | 1 |
| 10 | * 17 Lep | Sy* | 06 04 59.1294521328 | -16 29 03.969238632 | 5.29 | 5.17 | 4.93 | A3+K/M | 224 | 0 | ||
| 11 | 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 |
| 12 | HD 46149 | Y*O | 06 31 52.5319291296 | +05 01 59.178678024 | 7.03 | 7.80 | 7.61 | 7.54 | 7.36 | O8.5V | 288 | 0 |
| 13 | NGC 2264 | OpC | 06 40 53.7 | +09 52 32 | ~ | 1876 | 0 | |||||
| 14 | V* BM Gem | C* | 07 20 59.0073521904 | +24 59 58.086063708 | 11.50 | C-J5- | 155 | 1 | ||||
| 15 | * l Pup | sg* | 07 43 48.4696146486 | -28 57 17.374357218 | 4.06 | 4.09 | 3.93 | 3.68 | 3.50 | A4Iabe | 201 | 0 |
| 16 | HD 93146 | ** | 10 44 00.13416 | -60 05 08.7396 | O6V+O9.5V | 88 | 0 | |||||
| 17 | * 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 |
| 18 | * ome Sco | bC* | 16 06 48.4249866846 | -20 40 09.079866331 | 3.10 | 3.92 | 3.97 | 3.91 | 3.99 | B1V | 492 | 0 |
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