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| Query : 2004ApJ...603..449C |
2004ApJ...603..449C - Astrophys. J., 603, 449-455 (2004/March-2)
A view of PKS 2155-304 with XMM-newton reflection grating spectrometers.
CAGNONI I., NICASTRO F., MARASCHI L., TREVES A. and TAVECCHIO F.
Abstract (from CDS):
We present the high-resolution X-ray spectrum of the BL Lac object PKS 2155-304 taken with the RGS units on board XMM-Newton in 2000 November. We detect an O VII Kα resonant absorption line from warm/hot local gas at 21.59 Å (∼4.5 σ detection). The line profile is possibly double peaked. We do not confirm the strong 20.02 Å absorption line seen with Chandra and interpreted as z∼0.05 O VIII Kα. We set a 3 σ upper limit of 14 mÅ on the equivalent width. We also detect the ∼23.5 Å interstellar O I 1s⟶2p line and derive a factor of ≤1.5 subsolar O/H ratio in the interstellar medium along the PKS 2155-304 line of sight.
Abstract Copyright: ∼
Journal keyword(s): Galaxies: BL Lacertae Objects: Individual: Alphanumeric: PKS 2155-304 - Galaxies: Intergalactic Medium - Cosmology: Large-Scale Structure of Universe - Galaxies: Quasars: Absorption Lines - X-Rays: Galaxies
Simbad objects: 9
| Number of rows : 9 |
| 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 | V* V1055 Ori | LXB | 06 17 07.3565603963 | +09 08 13.515857360 | 18.80 | 18.5 | ~ | 594 | 1 | |||
| 2 | Z 184-50 | BLL | 11 04 27.3140835504 | +38 12 31.798495872 | 13.50 | 12.90 | 8.31 | ~ | 2841 | 1 | ||
| 3 | NGC 3783 | Sy1 | 11 39 01.7096819040 | -37 44 19.009642992 | 12.46 | 13.43 | 11.33 | 12.1 | ~ | 1765 | 1 | |
| 4 | 3C 273 | BLL | 12 29 06.6998257176 | +02 03 08.597629980 | 13.05 | 14.830 | 14.11 | ~ | 6022 | 1 | ||
| 5 | NGC 4593 | Sy1 | 12 39 39.4435107024 | -05 20 39.034988448 | 13.95 | 13.15 | ~ | 1179 | 0 | |||
| 6 | RX J1428.5+4240 | BLL | 14 28 32.6090008440 | +42 40 21.048123396 | 16.95 | 16.45 | 14.4 | ~ | 549 | 1 | ||
| 7 | V* V818 Sco | LXB | 16 19 55.0692669024 | -15 38 25.017666540 | 11.60 | 12.40 | 11.1 | Oev | 1730 | 0 | ||
| 8 | PKS J2158-3013 | BLL | 21 58 52.0652249880 | -30 13 32.118447792 | 13.36 | 13.09 | 12.62 | ~ | 1829 | 1 | ||
| 9 | NAME Local Group | GrG | ~ | ~ | ~ | 9325 | 0 |
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