2003ApJ...595..727I

Query : 2003ApJ...595..727I

2003ApJ...595..727I - Astrophys. J., 595, 727-742 (2003/October-1)

A deep Chandra X-ray observation of NGC 1637.

IMMLER S., WANG Q.D., LEONARD D.C. and SCHLEGEL E.M.

Abstract (from CDS):

We present a deep (168 ks) Chandra observation of the nearby face-on spiral galaxy NGC 1637 and study the X-ray source population. A total of 32 X-ray sources are detected within the D25ellipse of NGC 1637, each of which is found to be variable during the 629 day period covered by the observations. Deep Hubble Space Telescope WFPC2 observations of NGC 1637, nearly simultaneous with the Chandra data, were used to search for optical counterparts to the X-ray sources. An ultraluminous (LX=2.2x1039 ergs/s; 0.3-7 keV) and variable (factor of 1.4) X-ray source is found to positionally coincide with an optical faint and extended (∼25 pc FWHM) counterpart in the HST images (mV∼22.8 mag, mI∼21.1 mag). Given the multiband properties of this source, it likely represents a stellar-mass (∼8 M☉) black hole candidate located in an OB association in an outer spiral arm of NGC 1637. Our analysis further reveals large amounts of diffuse emission filling the entire extent of the galaxy. The spectrum of the inner ≲300 pc region is best described by a two-temperature thermal plasma emission, with a low-temperature/low-absorption component (kTlow∼0.3 keV) and a high-temperature/high-absorption component (kThigh∼0.7-0.8 keV), likely associated with an outflow of hot gas into the halo of NGC 1637. Comparison of the multiwavelength properties of a number of nearby galaxies shows that NGC 1637 has remarkably high LX/LFIRand LX/LBratios, suggesting a recent epoch with an enhanced star formation rate.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: General - Galaxies: Individual: NGC Number: NGC 1637 - Galaxies: Spiral - X-Rays: Galaxies - X-Rays: General

Nomenclature: Table 3: [IWL2003] NN (Nos 1-79).

CDS comments: Source 1 in M 82 = [WSG84] 1

Simbad objects: 99

goto Full paper

goto View the references in ADS

Number of rows : 99
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 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 NGC 247 LSB 00 47 08.554 -20 45 37.44 10.11 9.61 9.10 8.87   ~ 480 2
4 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
5 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
6 CXOU J044101.9-025024 X 04 41 01.9 -02 50 24           ~ 1 0
7 CXOU J044102.7-025125 X 04 41 02.7 -02 51 25           ~ 1 0
8 CXOU J044103.5-025020 X 04 41 03.5 -02 50 20           ~ 1 0
9 CXOU J044105.4-025315 X 04 41 05.4 -02 53 15           ~ 1 0
10 CXOU J044107.1-024832 X 04 41 07.1 -02 48 32           ~ 1 0
11 CXOU J044109.7-025551 X 04 41 09.7 -02 55 51           ~ 1 0
12 CXOU J044110.6-025055 X 04 41 10.6 -02 50 55           ~ 1 0
13 CXOU J044111.7-024945 X 04 41 11.7 -02 49 45           ~ 1 0
14 CXOU J044113.2-024618 X 04 41 13.2 -02 46 18           ~ 1 0
15 CXOU J044113.3-025627 X 04 41 13.3 -02 56 27           ~ 1 0
16 CXOU J044114.0-025017 * 04 41 13.9064344800 -02 50 16.941874416           ~ 1 0
17 [IWL2003] 12 * 04 41 14.4841116048 -02 50 06.717360876           ~ 1 0
18 CXOU J044114.6-024959 X 04 41 14.6 -02 49 59           ~ 1 0
19 CXOU J044115.7-024951 X 04 41 15.7 -02 49 51           ~ 1 0
20 CXOU J044115.8-025346 X 04 41 15.8 -02 53 46           ~ 1 0
21 CXOU J044116.7-025030 X 04 41 16.7 -02 50 30           ~ 1 0
22 CXOU J044117.1-025313 X 04 41 17.1 -02 53 13           ~ 1 0
23 CXOU J044117.4-024650 X 04 41 17.4 -02 46 50           ~ 1 0
24 CXOU J044118.4-025526 X 04 41 18.4 -02 55 26           ~ 1 0
25 CXOU J044118.5-024726 X 04 41 18.5 -02 47 26           ~ 1 0
26 CXOU J044121.0-025102 X 04 41 21.0 -02 51 02           ~ 1 0
27 CXOU J044121.1-025424 X 04 41 21.1 -02 54 24           ~ 1 0
28 CXOU J044121.2-025105 X 04 41 21.2 -02 51 05           ~ 1 0
29 CXOU J044121.5-025112 X 04 41 21.5 -02 51 12           ~ 1 0
30 CXOU J044121.7-025024 X 04 41 21.7 -02 50 24           ~ 1 0
31 CXOU J044121.9-024954 X 04 41 21.9 -02 49 54           ~ 1 0
32 ATO J070.3429-02.7806 V* 04 41 22.2938150784 -02 46 50.367971856           ~ 2 0
33 CXOU J044122.4-025648 X 04 41 22.4 -02 56 48           ~ 1 0
34 USNO-A2.0 0825-01115896 * 04 41 22.6859809680 -02 53 59.118477972   17.2       ~ 1 0
35 CXOU J044123.5-025306 X 04 41 23.5 -02 53 06           ~ 1 0
36 CXOU J044123.8-025249 X 04 41 23.8 -02 52 49           ~ 1 0
37 CXOU J044124.3-024912 X 04 41 24.3 -02 49 12           ~ 1 0
38 CXOU J044124.4-025324 X 04 41 24.4 -02 53 24           ~ 1 0
39 CXOU J044124.6-024744 X 04 41 24.6 -02 47 44           ~ 1 0
40 CXOU J044124.7-025235 X 04 41 24.7 -02 52 35           ~ 1 0
41 CXOU J044124.9-025432 X 04 41 24.9 -02 54 32           ~ 1 0
42 CXOU J044125.2-025131 X 04 41 25.2 -02 51 31           ~ 1 0
43 CXOU J044125.6-025202 X 04 41 25.6 -02 52 02           ~ 1 0
44 CXOU J044125.8-024930 X 04 41 25.8 -02 49 30           ~ 1 0
45 CXOU J044126.1-025002 X 04 41 26.1 -02 50 02           ~ 1 0
46 CXOU J044126.7-025206 X 04 41 26.7 -02 52 06           ~ 1 0
47 CXOU J044126.8-025136 X 04 41 26.8 -02 51 36           ~ 1 0
48 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 727 1
49 CXOU J044127.2-025127 X 04 41 27.2 -02 51 27           ~ 1 0
50 CXOU J044127.2-025049 X 04 41 27.2 -02 50 49           ~ 1 0
51 CXOU J044127.6-024920 X 04 41 27.6 -02 49 20           ~ 1 0
52 CXOU J044128.1-025113 X 04 41 28.1 -02 51 13           ~ 1 0
53 NGC 1637 Sy2 04 41 28.1926876152 -02 51 28.667815488   11.4   11.0 11.3 ~ 444 0
54 CXOU J044128.2-025028 X 04 41 28.2 -02 50 28           ~ 1 0
55 CXOU J044128.3-025316 X 04 41 28.3 -02 53 16           ~ 1 0
56 CXOU J044128.3-025048 X 04 41 28.3 -02 50 48           ~ 1 0
57 CXOU J044128.5-025215 SR? 04 41 28.5 -02 52 15           ~ 1 0
58 CXOU J044129.4-025139 X 04 41 29.4 -02 51 39           ~ 1 0
59 CXOU J044129.6-025125 X 04 41 29.6 -02 51 25           ~ 1 0
60 2MASS J04412999-0247434 * 04 41 29.9948150232 -02 47 43.462857192           ~ 1 0
61 CXOU J044130.0-024818 X 04 41 30.0 -02 48 18           ~ 1 0
62 CXOU J044130.2-024922 X 04 41 30.2 -02 49 22           ~ 1 0
63 CXOU J044130.2-024523 X 04 41 30.2 -02 45 23           ~ 1 0
64 CXOU J044130.4-025052 X 04 41 30.4 -02 50 52           ~ 1 0
65 CXOU J044130.5-025804 X 04 41 30.5 -02 58 04           ~ 1 0
66 CXOU J044130.6-025047 X 04 41 30.6 -02 50 47           ~ 1 0
67 CXOU J044131.2-024727 X 04 41 31.2 -02 47 27           ~ 1 0
68 CXOU J044131.6-025123 X 04 41 31.6 -02 51 23           ~ 1 0
69 CXOU J044131.7-025055 X 04 41 31.7 -02 50 55           ~ 1 0
70 CXOU J044132.2-025145 X 04 41 32.2 -02 51 45           ~ 1 0
71 CXOU J044132.2-025058 X 04 41 32.2 -02 50 58           ~ 1 0
72 [IWL2003] 67 X 04 41 32.4 -02 51 35           ~ 1 0
73 CXOU J044132.9-025126 UX? 04 41 32.97 -02 51 26.8           ~ 5 0
74 CXOU J044134.7-025211 X 04 41 34.7 -02 52 11           ~ 1 0
75 CXOU J044135.2-024707 X 04 41 35.2 -02 47 07           ~ 1 0
76 CXOU J044135.3-025240 X 04 41 35.3 -02 52 40           ~ 1 0
77 CXOU J044136.0-025530 X 04 41 36.0 -02 55 30           ~ 1 0
78 CXOU J044138.5-024641 X 04 41 38.5 -02 46 41           ~ 1 0
79 CXOU J044139.0-025119 X 04 41 39.0 -02 51 19           ~ 1 0
80 CXOU J044139.8-025102 X 04 41 39.8 -02 51 02           ~ 1 0
81 CXOU J044140.2-025618 X 04 41 40.2 -02 56 18           ~ 1 0
82 CXOU J044140.8-024723 X 04 41 40.8 -02 47 23           ~ 1 0
83 CXOU J044141.0-025446 X 04 41 41.0 -02 54 46           ~ 1 0
84 CXOU J044145.5-025536 X 04 41 45.5 -02 55 36           ~ 1 0
85 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
86 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
87 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
88 [WSG84] 1 X 09 55 41.3 +69 40 53           ~ 3 0
89 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
90 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1963 2
91 RX J1236.2+2558 ULX 12 36 17.45 +25 58 53.1           ~ 12 1
92 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
93 NAME Chandra Deep Field-North reg 12 36.8 +62 13           ~ 686 0
94 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
95 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
96 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
97 RX J133719-29536 ULX 13 37 20.12 -29 53 47.7           ~ 24 2
98 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
99 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1188 2

To bookmark this query, right click on this link: simbad:objects in 2003ApJ...595..727I and select 'bookmark this link' or equivalent in the popup menu