2007A&A...461..977M


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET18:20:16

2007A&A...461..977M - Astronomy and Astrophysics, volume 461, 977-982 (2007/1-3)

The stellar population of the Rosat North Ecliptic Pole survey.

MICELA G., AFFER L., FAVATA F., HENRY J.P., GIOIA I., MULLIS C.R., SANZ FORCADA J. and SCIORTINO S.

Abstract (from CDS):

X-ray surveys are a very efficient mean of detecting young stars and therefore allow us to study the young stellar population in the solar neighborhood and the local star formation history in the last billion of years. We want to study the young stellar population in the solar neighborhood, to constrain its spatial density and scale height as well as the recent local star formation history. We analyze the stellar content of the ROSAT North Ecliptic Pole survey, and compare the observations with the predictions derived from stellar galactic model. Since the ROSAT NEP survey is sensitive at intermediate fluxes is able to sample both the youngest stars and the intermediate age stars (younger than 109years), linking the shallow and deep flux surveys already published in the literature. We confirm the existence of an excess of yellow stars in our neighborhood previously seen in shallow survey, which is likely due to a young star population not accounted for in the model. However the excellent agreement between observations and predictions of dM stars casts some doubt on the real nature of this active population.

Abstract Copyright:

Journal keyword(s): stars: activity - stars: coronae - X-rays: stars - Galaxy: solar neighbourhood

VizieR on-line data: <Available at CDS (J/A+A/461/977): table1.dat table2.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 32

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Number of rows : 32

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 2506 * 00 29 14.2626441789 +59 28 10.124664234   8.98 8.03     G4III 27 0
2 HD 4628 PM* 00 48 22.9763438736 +05 16 50.209562003 7.22 6.64 5.74 4.99 4.52 K2.5V 456 0
3 HD 5351 PM* 00 57 04.4099171750 +69 02 36.434812807   10.13   8.5   K4V 78 0
4 HD 6111 PM* 01 03 31.0237321890 +61 56 14.689312226   9.43 8.9     G5 14 0
5 BD+63 137 PM* 01 07 08.1980398289 +63 56 28.776559541   10.28   8.2   K7V 103 0
6 HD 10032 * 01 38 48.0558871801 +40 45 38.902425351   8.81 8.46     F0V 20 0
7 * 107 Psc PM* 01 42 29.7634932653 +20 16 06.660242064 6.57 6.08 5.24 4.55 4.12 K1V 514 0
8 BD+37 448 * 01 58 52.9026089345 +37 48 57.227167774   10.07 9.04     G9III 72 0
9 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 3061 0
10 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2740 0
11 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3640 0
12 HD 66171 PM* 08 08 10.5437374919 +71 55 27.959201673   8.82   7.8   G2V 83 0
13 HD 70178 * 08 21 33.8227210437 +28 49 04.463676708   9.04 8.23     G5IV 16 0
14 HD 78277 PM* 09 08 02.7431820609 +27 33 32.475553050   8.85 8.20     G2IV 28 0
15 HD 237822 PM* 09 36 49.5207689507 +57 54 41.011275376   10.59   9.6   G3V 42 0
16 HD 83140 * 09 42 15.0241053796 +77 32 51.662408344   9.10 8.65     F3IV 17 0
17 BD+20 2465 Er* 10 19 36.2808024653 +19 52 12.014037746   10.82 9.52 9.19   dM3 1175 0
18 * 61 UMa PM* 11 41 03.0159358291 +34 12 05.882438337 6.31 6.08 5.34 4.73 4.38 G8V 574 0
19 * omi Vir PM* 12 05 12.5404884 +08 43 58.749788 5.75 5.11 4.12 3.38 2.89 G8IIICN0.5CH1Ba1 270 0
20 NAME Chandra Deep Field-North reg 12 36.8 +62 13           ~ 621 0
21 HD 110964 * 12 45 36.9868533884 +27 07 44.210067491   10.69 9.12     M4III 23 0
22 HD 112872 PM* 12 59 26.0798717592 +30 26 02.054407222   10.51 9.71     G9V 14 0
23 * eps Vir PM* 13 02 10.5978496 +10 57 32.941443 4.45 3.71 2.79 2.16 1.71 G8III-IIIb 522 0
24 HD 158063 * 17 21 10.4376418809 +69 48 02.546957035   7.99 7.38     F8 22 0
25 HD 158460 * 17 25 41.3529428938 +60 02 54.229938580   5.666 5.645     A1Vn 47 0
26 NAME NEP reg 18 00 00.000 +66 33 38.55           ~ 266 0
27 HD 167370 * 18 13 04.8209597450 +38 46 24.529900524 5.78 5.966 6.033     B9IIIn 39 0
28 * kap Del PM* 20 39 07.7860368187 +10 05 10.279480343   5.77   4.6   G2IV 187 0
29 * 61 Cyg B Er* 21 06 55.2640651855 +38 44 31.362140913 8.63 7.40 6.03 4.86 3.55 K7V 677 1
30 * iot Peg SB* 22 07 00.6620572743 +25 20 42.376138495 4.190 4.200 3.770 3.36 3.11 F5V 426 1
31 HD 219134 Er* 23 13 16.9747821012 +57 10 06.076520993 7.460 6.560 5.570 4.76 4.23 K3V 529 1
32 NAME Gould Belt PoG ~ ~           ~ 744 1

    Equat.    Gal    SGal    Ecl

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2021.02.26-18:20:16

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