1997A&AS..123..103Z


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.14CET22:48:17

1997A&AS..123..103Z - Astron. Astrophys., Suppl. Ser., 123, 103-114 (1997/May-2)

Identification of a complete sample of northern ROSAT All-Sky Survey X-ray sources. II. The optical observations.

ZICKGRAF F.-J., THIERING I., KRAUTTER J., APPENZELLER I., KNEER R., VOGES W.H., ZIEGLER B., CHAVARRIA C., SERRANO A., MUJICA R., PAKULL M. and HEIDT J.

Abstract (from CDS):

We describe a program for the optical identification of a representative sample of RASS sources contained in six study areas north of δ=-9°, with |bII|>20° including one region near the North Galactic pole (NGP) and one near the North Ecliptic pole (NEP) and present some preliminary results. A full identification has been carried out for a count-rate and area-limited complete subsample comprising 674 sources. The ratio of "extragalactic" ( e.g. AGN, clusters of galaxies) to "stellar" (e.g. coronal emitters, active binaries) counterparts was found to depend on the galactic neutral hydrogen column density, NH. In the area near the NGP (low NH) "extragalactic" counterparts dominate, while in the area with the highest NH most X-ray sources are identified with stellar counterparts.

Abstract Copyright:

Journal keyword(s): surveys - X-rays: general - X-rays: galaxies - X-rays: stars - galaxies: active - galaxies: cluster: general

CDS comments: SAO 9189 far from the proposed correlation (RX J1839.0+7257) (.)

Simbad objects: 18

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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 - 2020
#notes
1 [VV98] J040329.5+083703 QSO 04 03 30.1100250084 +08 36 44.277533923   18.3 18.42     ~ 10 0
2 2MASX J07471915+6822518 Sy1 07 47 19.2318900704 +68 22 51.405233367   18.61 17.72     ~ 6 0
3 HD 95900 PM* 11 03 50.0685177654 -07 41 17.568541973   8.32 7.39     K0III 16 0
4 NAME HD 96064 BC ** 11 04 40.976136 -04 13 24.66912       9.87   M0.0V 25 0
5 RX J1207.7+3148 X 12 07 44.66 +31 48 51.5           ~ 5 0
6 HD 108944 * 12 31 00.7365495815 +31 25 25.804765573   7.82 7.3     F9V 52 0
7 * 31 Com Ro* 12 51 41.9190038520 +27 32 26.568320838 5.81 5.61 4.94 4.39 4.04 G0IIIp 408 1
8 HD 148941 * 16 25 29.2225659279 +71 23 04.457467869   7.69 7.10     F8 23 0
9 BD+72 732 * 16 26 34.4803371205 +72 02 38.900168241   11.32 10.26     K2 1 0
10 HD 163183 PM* 17 47 38.1784635056 +73 07 57.642676199   8.33 7.75     G0 27 0
11 BD+70 990 * 18 18 31.8924450821 +70 42 16.878050731   10.86 10.04     G5 6 0
12 BD+70 991 * 18 18 37.8512839573 +70 42 19.574543648   10.63 9.81     G5 3 0
13 RX J1825.8+7144 X 18 25 53.9 +71 43 53           ~ 1 0
14 HD 171044 * 18 25 54.2741793046 +71 43 54.390547708   7.79 7.34     F5 15 0
15 HD 173127 * 18 36 58.5485285325 +72 16 01.230106371   9.09 8.55     G5 7 0
16 RX J1839.0+7257 X 18 39.0 +72 57           ~ 1 0
17 RX J1857.9+7703 X 18 57 56.102 +77 03 08.50           ~ 1 0
18 HD 178089 PM* 18 57 57.1805175697 +77 03 02.963505223 6.940 6.950 6.570     F2V 45 0

    Equat.    Gal    SGal    Ecl

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2019.12.14-22:48:17

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