2007A&A...469..713M


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.01CET09:21:06

2007A&A...469..713M - Astronomy and Astrophysics, volume 469, 713-719 (2007/7-2)

Results from a spectroscopic survey in the CoRoT fields. I. Search for chromospherically active stars.

MEDHI B.J., MESSINA S., PARIHAR P.S., PAGANO I., MUNEER S. and DUORAH K.

Abstract (from CDS):

In this paper we report the results of the spectroscopic survey we carried out to detect chromospheric activity of late-type stars in the fields of view of the CoRoT space mission.We give an accurate MK classification of all targets, which is valuable information on both the main CoRoT project and additional science programs, by means of cross-correlation with MK standard stars, by using artificial neural networks. The presence or absence of excess Hα emission, determined using spectral subtraction technique, is used to characterize the chromospheric activity level.In most cases our MK classification agrees with the spectral classification reported in the SIMBAD database; however, there are a few stars that are found to have very different MK classes. Our survey reveals that ∼7% of late-type stars in our sample indeed possess a very active chromosphere. The measured Hα excess and the presence of the 6708Å Li line allow us to confirm the membership of 5 targets in the young open cluster NGC2264.

Abstract Copyright:

Journal keyword(s): stars: late-type - stars: activity - stars: fundamental parameters

VizieR on-line data: <Available at CDS (J/A+A/469/713): table12.dat table35.dat fig/*>

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 * 47 Psc LP* 00 28 02.9123161359 +17 53 35.243795107 8.53 6.71 5.06 3.32 1.78 M3III 97 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 V* SW Mon LP* 06 27 00.9760557354 +05 22 43.789258145   11.44 10.07     M4III 26 0
4 G 108-4 SB* 06 29 50.2964871568 -02 47 45.690553910   15.349 13.832 13.561 11.02 M4.0V 19 0
5 HD 46122 Ro* 06 31 46.0580062603 +06 47 07.671373899   8.11 7.274   6.465 G3IV 35 0
6 NGC 2264 33 * 06 39 55.7615374030 +09 34 28.373308027 16.988 14.12 11.67 10.83 8.870 M1 19 0
7 NGC 2264 OpC 06 40 58 +09 53.7           ~ 1613 0
8 V* IO Mon TT* 06 40 58.836576 +09 30 57.26412   15.30 14.04 13.11 12.49 K2/3e 60 0
9 NGC 2264 134 TT* 06 40 59.3436202135 +09 55 20.166584605 13.918 13.22 12.38 11.908 11.47 G5V 51 0
10 V* IP Mon TT* 06 41 00.9823376160 +09 32 44.469147785 15.55 14.77 13.48 12.68 11.92 K1 72 0
11 V* MM Mon TT* 06 41 12.5750429431 +09 52 31.223088040 15.77 15.46 14.28 13.55 12.82 G:V:e 55 0
12 V* MO Mon TT* 06 41 31.1201410648 +09 26 58.283379819 14.85 14.87 13.85 13.19 12.56 K4 67 0
13 HD 262323 * 06 42 08.2111874079 +05 03 35.088251351   10.00 8.72     K2Ib 8 0
14 V* PZ Mon RG* 06 48 21.0660032849 +01 13 08.310361424   10.18 9.60     K2III 43 0
15 UCAC4 423-023265 PM* 06 52 53.9183648591 -05 24 41.375731273   13.765 12.247 11.879   K7V 10 0
16 V* X Mon Mi* 06 57 11.8142827522 -09 03 52.149453376 10.09 8.61 7.07     K5-M6e 75 0
17 V* V926 Mon LP* 07 02 06.7312016194 -03 45 17.395688178   8.25 6.62     M2Ib+B7/9?IV: 25 0
18 HD 52919 PM* 07 02 42.9174485166 -06 47 57.214431983 10.45 9.442 8.351 7.708 7.18 K4V 73 0
19 HD 95735 Er* 11 03 20.19400 +35 58 11.5682 10.030 8.960 7.520 5.99 4.79 M2+V 639 0
20 V* EK Boo LP? 14 46 05.94566 +15 07 54.4332 8.51 7.20 5.63     M5III 73 0
21 * 93 Her * 18 00 03.4161099403 +16 45 03.285548353 7.15 5.93 4.67 3.80 3.21 K0.5IIb 132 0
22 HD 168159 PM* 18 18 40.6786950303 -06 42 03.718683428   10.32 9.29     K3V 44 0
23 HD 170493 PM* 18 29 52.4074744124 -01 49 05.169085248 10.187 9.11 8.004 7.374 6.871 K4V 113 0
24 NGC 6705 602 * 18 51 17.9302020420 -06 12 42.697956224   16.166 15.482     ~ 6 0
25 HD 175545 PM* 18 55 51.4487017582 -00 44 22.117034078   8.60 7.40     K2III 39 0
26 HD 175905 PM* 18 57 35.9598742096 -00 31 34.937007615   8.82 7.66     K0/1III 19 0
27 HD 178126 PM* 19 07 02.0407950965 +07 36 57.151938394 11.243 10.297 9.215 8.559 7.996 K5V 64 0
28 * eta Cyg * 19 56 18.3722223 +35 05 00.322759 5.800 4.910 3.880 3.19 2.66 K0III 272 0
29 HD 190360 PM* 20 03 37.4049065078 +29 53 48.495330996   6.44   5.2   G7IV-V 397 1
30 * 61 Cyg A BY* 21 06 53.9396100677 +38 44 57.897024357 7.50 6.39 5.21 4.19 3.54 K5V 960 0
31 * eps Peg LP* 21 44 11.1561394 +09 52 30.031152 5.61 3.91 2.39 1.34 0.58 K2Ib-II 434 0
32 HD 219134 Er* 23 13 16.9747821012 +57 10 06.076520993 7.460 6.560 5.570 4.76 4.23 K3V 529 1

    Equat.    Gal    SGal    Ecl

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2021.03.01-09:21:06

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