2014ApJ...785L..25E

Query : 2014ApJ...785L..25E

2014ApJ...785L..25E - Astrophys. J., 785, L25 (2014/April-3)

X-ray detection of the cluster containing the cepheid S Mus.

EVANS N.R., PILLITTERI I., WOLK S., GUINAN E., ENGLE S., BOND H.E., SCHAEFER G.H., KAROVSKA M., DEPASQUALE J. and TINGLE E.

Abstract (from CDS):

The galactic Cepheid S Muscae has recently been added to the important list of Cepheids linked to open clusters, in this case the sparse young cluster ASCC 69. Low-mass members of a young cluster are expected to have rapid rotation and X-ray activity, making X-ray emission an excellent way to discriminate them from old field stars. We have made an XMM-Newton observation centered on S Mus and identified a population of X-ray sources whose near-IR Two Micron All Sky Survey counterparts lie at locations in the J, (J - K) color-magnitude diagram consistent with cluster membership at the distance of S Mus. Their median energy and X-ray luminosity are consistent with young cluster members as distinct from field stars. These strengthen the association of S Mus with the young cluster, making it a potential Leavitt law (period-luminosity relation) calibrator.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: individual: ASCC 69 - stars: low-mass - stars: variables: Cepheids - X-rays: stars

Simbad objects: 24

goto Full paper

goto View the references in ADS

Number of rows : 24
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 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
2 [KPR2005] 69 OpC 12 06 36 -69 46.2           ~ 27 0
3 TYC 9231-1524-1 * 12 10 18.4652442648 -70 06 44.854797384   10.93 10.83     ~ 1 0
4 2MASS J12104829-7008261 * 12 10 48.2844011856 -70 08 26.105646084           ~ 2 0
5 2MASS J12105447-7009296 NIR 12 10 54.473 -70 09 29.70           ~ 1 0
6 2MASS J12105702-6959592 * 12 10 57.0342753528 -69 59 59.343415656           ~ 1 0
7 2MASS J12111525-7009518 * 12 11 15.2742915360 -70 09 51.903885780           ~ 1 0
8 2MASS J12120080-7003457 * 12 12 00.8114995272 -70 03 45.745223904           ~ 1 0
9 2MASS J12121521-7013476 * 12 12 15.1914321792 -70 13 47.674484688           ~ 1 0
10 2MASS J12122464-7005448 NIR 12 12 24.645 -70 05 44.86           ~ 1 0
11 2MASS J12123024-7009130 * 12 12 30.2277148824 -70 09 12.842366004           ~ 1 0
12 2MASS J12124049-7004243 * 12 12 40.5152685240 -70 04 24.186758232           ~ 1 0
13 V* S Mus cC* 12 12 47.0199008472 -70 09 06.439196664 7.58 8.80 8.33 7.39 5.196 F6Ib+B5V 275 0
14 2MASS J12124932-7004087 * 12 12 49.3337540760 -70 04 08.629138308           ~ 1 0
15 2MASS J12133084-7008364 * 12 13 30.8439475536 -70 08 36.516333480           ~ 2 0
16 2MASS J12133153-7016575 * 12 13 31.5368402976 -70 16 57.652327920           ~ 1 0
17 2MASS J12133206-6955321 * 12 13 32.0583477888 -69 55 31.974383172           ~ 1 0
18 2MASS J12133429-7008332 * 12 13 34.2922200744 -70 08 33.251142480           ~ 1 0
19 2MASS J12140653-7016261 * 12 14 06.5431187760 -70 16 26.310600768           ~ 1 0
20 2MASS J12143476-7006537 Y*? 12 14 34.7562115632 -70 06 53.775539280           ~ 4 0
21 2MASS J12144088-7009232 * 12 14 40.8908004336 -70 09 23.319946620           ~ 3 0
22 2MASS J12150330-7003181 * 12 15 03.3190189008 -70 03 18.292079772           ~ 1 0
23 IC 4725 OpC 18 31 47.5 -19 07 37           ~ 239 0
24 V* U Sgr cC* 18 31 53.3323107600 -19 07 30.261459540 8.50 7.81 6.68   5.413 G1Ib 491 0

To bookmark this query, right click on this link: simbad:objects in 2014ApJ...785L..25E and select 'bookmark this link' or equivalent in the popup menu