2005AJ....129...86H

Query : 2005AJ....129...86H

2005AJ....129...86H - Astron. J., 129, 86-103 (2005/January-0)

Chandra-SDSS normal and star-forming galaxies. I. X-ray source properties of galaxies detected by the Chandra X-ray observatory in SDSS DR2.

HORNSCHEMEIER A.E., HECKMAN T.M., PTAK A.F., TREMONTI C.A. and COLBERT E.J.M.

Abstract (from CDS):

We have cross-correlated X-ray catalogs derived from archival Chandra X-Ray Observatory ACIS observations with a Sloan Digital Sky Survey Data Release 2 (DR2) galaxy catalog to form a sample of 42 serendipitously X-ray-detected galaxies over the redshift interval 0.03<z<0.25. This pilot study will help fill in the ``redshift gap'' between local X-ray-studied samples of normal galaxies and those in the deepest X-ray surveys. Our chief purpose is to compare optical spectroscopic diagnostics of activity (both star formation and accretion) with X-ray properties of galaxies. Our work supports a normalization value of the X-ray-star formation rate correlation consistent with the lower values published in the literature. The difference is in the allocation of X-ray emission to high-mass X-ray binaries relative to other components, such as hot gas, low-mass X-ray binaries, and/or active galactic nuclei (AGNs). We are able to quantify a few pitfalls in the use of lower resolution, lower signal-to-noise ratio optical spectroscopy to identify X-ray sources (as has necessarily been employed for many X-ray surveys). Notably, we find a few AGNs that likely would have been misidentified as non-AGN sources in higher redshift studies. However, we do not find any X-ray-hard, highly X-ray-luminous galaxies lacking optical spectroscopic diagnostics of AGN activity. Such sources are members of the ``X-ray-bright, optically normal galaxy'' (XBONG) class of AGNs.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Observations - Cosmology: Diffuse Radiation - Surveys - X-Rays: Galaxies - X-Rays: General

Simbad objects: 43

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Number of rows : 43
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 2MASX J00414681-0923129 GiC 00 41 46.7949754872 -09 23 12.869542752     16.81 15.86   ~ 15 0
2 2MASX J01123815+1528041 GiC 01 12 38.1487342800 +15 28 04.410960996           ~ 10 0
3 2MASX J01125386+1536091 GiC 01 12 53.8944892824 +15 36 08.917971048           ~ 14 0
4 Z 436-11 GiC 01 12 54.0196305408 +15 32 49.141507416           ~ 14 0
5 LEDA 1488562 AGN 01 12 59.469 +15 35 29.38           ~ 34 0
6 SDSS J011313.86+152938.2 G 01 13 13.86 +15 29 38.2           ~ 1 0
7 2MASX J01131980+1529273 GiC 01 13 19.7788681680 +15 29 27.407790996           ~ 11 0
8 2MASX J01145420+0030270 LIN 01 14 54.2205328896 +00 30 26.655219144   16.42 15.7     ~ 31 0
9 2MASX J01145426+0018120 GiC 01 14 54.2604347688 +00 18 11.880408096   15.92 17.4     ~ 48 0
10 2MASX J01150880+0015570 EmG 01 15 08.7827688384 +00 15 56.703902832   16.59 16.0     ~ 23 0
11 NVSS J011515+001247 rG 01 15 15.7840956960 +00 12 48.538049652   15.68 15.0     ~ 80 1
12 2MASX J01151944+0013563 GiC 01 15 19.4096593392 +00 13 56.983168452     17.4     ~ 10 0
13 LEDA 4532 LIN 01 15 20.8688181528 +00 15 33.560425584     15.5     ~ 25 0
14 2MASX J08522485+5112102 Sy2 08 52 24.9042957384 +51 12 10.143742824   18.80 18.11     ~ 7 0
15 2MASS J08523234+5124132 G 08 52 32.3552847696 +51 24 13.289001840           ~ 5 0
16 2MASX J09341415+6117361 G 09 34 14.1051559200 +61 17 36.378676608           ~ 3 0
17 2MASX J09524915+5153053 LIN 09 52 49.164 +51 53 05.04   20.1       ~ 31 1
18 2MASS J10232814+0409183 G 10 23 28.13750 +04 09 18.4865           ~ 6 0
19 2MASX J10234843+0405536 Sy1 10 23 48.4350539699 +04 05 53.905121235   17.30 16.70     ~ 21 0
20 2MASX J10325794+5731068 AGN 10 32 57.949 +57 31 06.81           ~ 9 0
21 LEDA 3408246 LIN 10 32 59.7424015800 +57 53 21.770682360   18.11 16.60 16.03   ~ 11 0
22 MCG+09-19-001 G 11 12 56.5869993144 +55 41 00.360661056   16       ~ 8 0
23 2MASX J12213961+4919555 EmG 12 21 39.617 +49 19 55.53           ~ 8 0
24 NVSS J122930+032940 rG 12 29 30.6297202992 +03 29 42.567078372           ~ 10 0
25 NAME Chandra Deep Field-North reg 12 36.8 +62 13           ~ 686 0
26 LEDA 2630094 rG 12 36 49.0007887224 +62 04 38.823646512 19.8 18.7 17.6 17.7 17.1 ~ 18 0
27 NVSS J124240+024027 rG 12 42 40.6451828760 +02 40 20.721254016           ~ 6 0
28 PKS 1435+038 rG 14 38 21.8715090192 +03 40 13.344492936           ~ 49 1
29 FIRST J143826.3+033858 rG 14 38 26.3358332808 +03 38 58.702360992           ~ 8 0
30 NVSS J150554+013531 rG 15 05 54.2733633816 +01 35 35.448573876           ~ 4 0
31 SDSS J150944.45+570434.5 G 15 09 44.4458794824 +57 04 35.524501464           ~ 5 0
32 NVSS J163608+410514 rG 16 36 08.119 +41 05 07.60 20.81         ~ 23 0
33 FIRST J163615.4+405715 rG 16 36 15.5046941904 +40 57 15.415609176 20.93         ~ 8 0
34 LEDA 3388107 Sy1 16 36 29.6604567144 +41 02 22.359296760 18.72 16.81 16.17 17.23 16.87 ~ 32 0
35 2MASX J16395368+4652268 BiC 16 39 53.7456927888 +46 52 26.496050268           ~ 4 0
36 2MASX J17020882+6412210 H2G 17 02 08.8842001104 +64 12 21.134246796     16.66     ~ 18 0
37 SDSS J171206.87+640831.9 EmG 17 12 06.8867392368 +64 08 31.757416692           ~ 11 0
38 2MASX J17123243+6400095 GiC 17 12 32.4391208064 +64 00 10.105946460           ~ 9 0
39 2MASX J17125447+6359325 GiC 17 12 54.4321290768 +63 59 32.742436092           ~ 12 0
40 2MASX J17130384+6407014 rG 17 13 03.7806794784 +64 07 01.673867568           ~ 32 0
41 7C 1713+6407b LIN 17 13 29.113 +64 02 48.73           ~ 45 2
42 LEDA 1163753 Sy2 22 17 22.7209658784 +00 21 08.615628360   19.85 19.03     ~ 13 0
43 LEDA 196693 G 23 48 17.9878294560 +01 06 17.073982008           ~ 8 0

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