2017ApJ...841...73K

Query : 2017ApJ...841...73K

2017ApJ...841...73K - Astrophys. J., 841, 73-73 (2017/June-1)

Nearby young, active, late-type dwarfs in Gaia's First Data Release.

KASTNER J.H., SACCO G., RODRIGUEZ D., PUNZI K., ZUCKERMAN B. and VICAN HANEY L.

Abstract (from CDS):

The Galex Nearby Young Star Survey (GALNYSS) has yielded a sample of ∼2000 UV-selected objects that are candidate nearby (D 150 pc), young (age ∼ 10-100 Myr), late-type stars. Here, we evaluate the distances and ages of the subsample of (19) GALNYSS stars with Gaia Data Release 1 (DR1) parallax distances D 120 pc. The overall youth of these 19 mid-K to early-M stars is readily apparent from their positions relative to the loci of main-sequence stars and giants in Gaia-based color-magnitude and color-color diagrams constructed for all stars detected by Galex and the Wide-field Infrared Space Explorer for which parallax measurements are included in DR1. The isochronal ages of all 19 stars lie in the range ∼10-100 Myr. Comparison with Li-based age estimates indicates a handful of these stars may be young main-sequence binaries rather than pre-main sequence stars. Nine of the 19 objects have not previously been considered as nearby, young stars, and all but one of these are found at declinations north of +30°. The Gaia DR1 results presented here indicate that the GALNYSS sample includes several hundred nearby, young stars, a substantial fraction of which have not been previously recognized as having ages 100 Myr.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: activity - stars: chromospheres - stars: late-type - stars: pre-main sequence - stars: pre-main sequence

Simbad objects: 31

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Number of rows : 31
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 NAME THA MGr 00 00 -62.0           ~ 540 0
2 Smethells 173 PM* 00 45 28.1543761104 -51 37 33.939128316   13.17 12.30 10.9 9.73 M3V 66 0
3 Hilt 59 bC* 00 45 35.0627330928 +63 21 07.436379924 10.85 11.10 10.55     B0.5V 22 0
4 LP 353-51 PM* 02 23 26.6464321080 +22 44 06.759592152   13.28 11.250 10.697   M1V 60 0
5 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
6 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 337 0
7 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 540 0
8 BD-20 2773 PM* 09 03 33.6717080352 -20 35 59.034727428   11.41 10.45   8.952 K3Ve 16 0
9 TYC 3824-657-1 ** 11 01 19.367880 +52 52 23.61612   13.482 11.906 11.520   ~ 1 0
10 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
11 AC +56 43797 PM* 11 15 54.0279717792 +55 19 50.637729972       10.686   M0.5V 48 0
12 RX J1135.5+8259 PM* 11 35 34.6555183824 +82 59 21.590601828   11.873 10.856 10.655   ~ 10 0
13 BD+49 2126 PM* 12 15 08.8223193624 +48 43 57.214732692       10.058   K6V 72 0
14 HD 113766 ** 13 06 35.83622 -46 02 02.0178           F3/5V 112 0
15 TYC 8246-2900-1 * 13 06 50.2811609232 -46 09 56.096329032   12.79 11.64     K3Ve 8 0
16 TYC 8246-1527-1 Or* 13 06 54.3958785528 -45 41 31.218088596   13.06 12.03     K5Ve 22 0
17 RX J1329.5+5142 ** 13 29 32.123376 +51 42 11.33712   13.681 12.404 12.191   K7 10 0
18 StKM 1-1143 * 14 18 42.3828105048 +47 55 14.899962684   13.71 12.23     K7 12 0
19 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
20 CD-30 12111 Ro* 15 18 20.4932119440 -30 56 34.726186356   12.44 11.36   10.125 K5Ve 9 0
21 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
22 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
23 V* V401 Dra BY* 18 17 25.1255884056 +48 22 02.331245064   12.81 11.37 10.91   dM2.0 58 0
24 RX J1821.8+3253 ** 18 21 50.438280 +32 53 58.87824   13.11 11.73 11.347   ~ 3 0
25 1RXS J191533.9-083011 Ro* 19 15 34.8229088400 -08 30 19.906363584   12.80 11.37 11.306   ~ 6 0
26 TYC 4448-2206-1 PM* 19 23 23.1177990144 +70 07 38.112275388   13.33 11.98     ~ 3 0
27 V* V390 Pav SB* 21 21 24.4939911360 -66 54 57.365639064   9.95 8.766   7.515 K2V 68 0
28 PM J21214-6655 LM* 21 21 28.7195632968 -66 55 06.270466728   11.94 10.595 10.244   K7V 40 0
29 V* HK Aqr BY* 23 08 19.5510173448 -15 24 35.766079704 13.4 12.282 10.872 9.964 9.019 M0Ve 219 0
30 SCR J2335-6433A PM* 23 35 18.4216662672 -64 33 42.436394532   12.30 11.08 10.42 9.614 K6V 19 0
31 SCR J2335-6433B PM* 23 35 19.9410608544 -64 33 22.352400576   16.55 15.65 14.49 13.00 ~ 6 0

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