2010ApJ...714.1582B


Query : 2010ApJ...714.1582B

2010ApJ...714.1582B - Astrophys. J., 714, 1582-1605 (2010/May-2)

Innovations in the analysis of Chandra-ACIS observations.

BROOS P.S., TOWNSLEY L.K., FEIGELSON E.D., GETMAN K.V., BAUER F.E. and GARMIRE G.P.

Abstract (from CDS):

As members of the instrument team for the Advanced CCD Imaging Spectrometer (ACIS) on NASA's Chandra X-ray Observatory and as Chandra General Observers, we have developed a wide variety of data analysis methods that we believe are useful to the Chandra community, and have constructed a significant body of publicly available software (the ACIS Extract package) addressing important ACIS data and science analysis tasks. This paper seeks to describe these data analysis methods for two purposes: to document the data analysis work performed in our own science projects and to help other ACIS observers judge whether these methods may be useful in their own projects (regardless of what tools and procedures they choose to implement those methods). The ACIS data analysis recommendations we offer here address much of the workflow in a typical ACIS project, including data preparation, point source detection via both wavelet decomposition and image reconstruction, masking point sources, identification of diffuse structures, event extraction for both point and diffuse sources, merging extractions from multiple observations, nonparametric broadband photometry, analysis of low-count spectra, and automation of these tasks. Many of the innovations presented here arise from several, often interwoven, complications that are found in many Chandra projects: large numbers of point sources (hundreds to several thousand), faint point sources, misaligned multiple observations of an astronomical field, point source crowding, and scientifically relevant diffuse emission.

Abstract Copyright:

Journal keyword(s): methods: data analysis - methods: statistical - techniques: image processing - X-rays: general

Simbad objects: 46

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Number of rows : 46
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 IC 10 G 00 20 23.16 +59 17 34.7   13.6 9.5     ~ 1073 0
2 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3766 0
3 NAME Mayall II GlC 00 32 46.5323801712 +39 34 40.504803060   14.564 13.807 13.208 12.684 ~ 386 1
4 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 845 0
5 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 999 0
6 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5568 1
7 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1009 3
8 SN 2006gy SN* 03 17 27.06 +41 24 19.5       14.20   SNIIn 321 1
9 NGC 1260 GiG 03 17 27.2296053456 +41 24 18.481941324   14.2       ~ 90 1
10 LDN 1448 DNe 03 22.5 +30 35           ~ 502 0
11 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 1985 1
12 M 42 HII 05 35 01.5 -05 26 24           ~ 3951 0
13 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4760 2
14 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1895 1
15 NAME Rosette Nebula HII 06 32 26.76 +04 47 37.1           ~ 474 1
16 ACO 754 ClG 09 08 50.1 -09 38 12           ~ 648 1
17 GUM 29 HII 10 24 14.6 -57 46 58           ~ 203 0
18 Cl Trumpler 14 OpC 10 43 57 -59 33.2   5.70 5.5     ~ 478 0
19 Cl Trumpler 16 OpC 10 45 01 -59 42.0   5.35 5.0     ~ 462 0
20 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 967 2
21 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 665 2
22 QSO J1131-1231 QSO 11 31 51.5387 -12 31 58.716           ~ 250 1
23 NGC 4485 GiP 12 30 31.113 +41 42 04.22 12.10 12.42 11.93 11.93   ~ 267 2
24 NAME Chandra Deep Field-North reg 12 36.8 +62 13           ~ 647 0
25 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4570 2
26 NAME Centaurus A Sy2 13 25 27.6039817176 -43 01 09.493008456   8.18 6.84 6.66   ~ 4301 3
27 CG 12 CGb 13 57 42.2 -39 56 21           ~ 48 1
28 SN 1996cr SN* 14 13 10.05 -65 20 44.8     19.5     SNIIn: 73 1
29 NAME Circinus Region reg 14 49 -65.3           ~ 30 0
30 Cl Westerlund 1 OpC 16 47 04.00 -45 51 04.9           ~ 516 0
31 NGC 6334 HII 17 20 53 -36 07.9           ~ 647 0
32 NGC 6357 OpC 17 24 44 -34 12.2           ~ 266 0
33 NGC 6366 GlC 17 27 44.24 -05 04 47.5           ~ 288 0
34 ESO 455-23 GlC 17 35 47.80 -30 28 11.0           ~ 228 0
35 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13304 0
36 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 778 1
37 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1567 0
38 NAME Coronet Cluster Cl* 19 01 54 -36 57.2           ~ 86 1
39 4FGL J1910.2+0904c SFR 19 10 15.7 +09 06 05           ~ 285 2
40 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 817 0
41 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 887 0
42 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2404 2
43 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 992 0
44 NAME IC 1396 North CGb 21 40 42.6537 +58 16 01.882           ~ 186 1
45 SSA 22 reg 22 17 34.7 +00 15 07           ~ 308 0
46 NAME Cep B cor 22 57 07.00 +62 37 22.3           ~ 86 0

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2022.11.26-10:17:07

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