2011ApJ...740..110A


Query : 2011ApJ...740..110A

2011ApJ...740..110A - Astrophys. J., 740, 110 (2011/October-3)

The factory and the beehive. I. Rotation periods for low-mass stars in Praesepe.

AGUEROS M.A., COVEY K.R., LEMONIAS J.J., LAW N.M., KRAUS A., BATALHA N., BLOOM J.S., CENKO S.B., KASLIWAL M.M., KULKARNI S.R., NUGENT P.E., OFEK E.O., POZNANSKI D. and QUIMBY R.M.

Abstract (from CDS):

Stellar rotation periods measured from single-age populations are critical for investigating how stellar angular momentum content evolves over time, how that evolution depends on mass, and how rotation influences the stellar dynamo and the magnetically heated chromosphere and corona. We report rotation periods for 40 late-K to mid-M star members of the nearby, rich, intermediate-age (∼600 Myr) open cluster Praesepe. These rotation periods were derived from ∼200 observations taken by the Palomar Transient Factory of four cluster fields from 2010 February to May. Our measurements indicate that Praesepe's mass-period relation transitions from a well-defined singular relation to a more scattered distribution of both fast and slow rotators at ∼0.6 M. The location of this transition is broadly consistent with expectations based on observations of younger clusters and the assumption that stellar spin-down is the dominant mechanism influencing angular momentum evolution at 600 Myr. However, a comparison to data recently published for the Hyades, assumed to be coeval to Praesepe, indicates that the divergence from a singular mass-period relation occurs at different characteristic masses, strengthening the finding that Praesepe is the younger of the two clusters. We also use previously published relations describing the evolution of rotation periods as a function of color and mass to evolve the sample of Praesepe periods in time. Comparing the resulting predictions to periods measured in M35 and NGC 2516 (∼150 Myr) and for kinematically selected young and old field star populations suggests that stellar spin-down may progress more slowly than described by these relations.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual: Praesepe - stars: rotation - surveys - techniques: photometric

Simbad objects: 59

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Number of rows : 59
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3196 0
2 Cl Melotte 25 OpC 04 29 47 +16 56.9           ~ 2851 0
3 NGC 2168 OpC 06 09 05 +24 20.2           ~ 507 0
4 NGC 2516 OpC 07 58 06 -60 48.0           ~ 649 0
5 LINEAR 602919 EB* 08 31 13.9669722432 +19 49 51.588017832     16.02     ~ 7 0
6 2MASS J08312987+2024374 Ro* 08 31 29.8720670928 +20 24 37.524183948   15.766 14.351     M1V 22 0
7 Cl* NGC 2632 HSHJ 15 Ro* 08 31 40.4485552104 +19 47 54.211738848   16.580 15.098     M2.0 15 0
8 SDSS J083238.89+210424.6 RR* 08 32 38.8940418672 +21 04 24.641182236     17.43     ~ 5 0
9 Cl* NGC 2632 HSHJ 37 Er* 08 33 17.9812353840 +19 16 32.753270604   20.93 18.14     M3.7 20 0
10 Cl* NGC 2632 JC 27 * 08 33 50.7608899584 +19 46 58.622526192   18.01 15.75     M0.5 15 0
11 CRTS J083426.3+202040 EB* 08 34 26.3900747952 +20 20 41.272943424     15.34     ~ 3 0
12 LINEAR 4620408 RR* 08 35 25.0089583488 +19 46 59.809820304     16.00     ~ 10 0
13 Cl* NGC 2632 JS 95 Er* 08 35 40.1505882528 +18 42 28.352207484   19.95 17.34     M3.3 21 0
14 Cl* NGC 2632 HSHJ 87 LM* 08 35 47.2238439768 +18 08 29.901362748           M5V 18 0
15 Cl* NGC 2632 HSHJ 91 Er* 08 35 59.4448223400 +20 04 40.532989764   20.94 18.30     M5V 22 0
16 Cl* NGC 2632 JC 56 * 08 36 08.9742510792 +19 13 48.036701496   18.64 16.40     M1.3 23 0
17 V* CD Cnc Er* 08 36 48.9550658808 +19 18 59.333997744           M1.8 26 0
18 Cl* NGC 2632 JC 80 Er* 08 36 56.2534809312 +18 57 47.972108340   16.97 14.97     M0.9 21 0
19 LINEAR 4594482 RR* 08 37 06.8084749008 +18 55 56.346927780   16.305 16.124     ~ 8 0
20 Cl* NGC 2632 JS 174 Er* 08 37 19.9062786984 +19 03 11.966936004   19.25 16.69     M3.0 15 0
21 Cl* NGC 2632 JS 181 Er* 08 37 28.4609105112 +20 36 28.537507440   17.40 15.40     M0.8 17 0
22 Cl* NGC 2632 JC 103 Er* 08 37 32.4309788208 +19 31 17.999827320   18.59 16.27     M1.9 21 0
23 CRTS J083816.7+182724 RR* 08 38 16.7895756000 +18 27 24.664854564     17.25     ~ 5 0
24 K2-104 LM* 08 38 32.8359046512 +19 46 25.591543968   18.46 16.26     M1V 39 0
25 Cl* NGC 2632 JS 241 Er* 08 38 37.4716063536 +19 15 28.752314148   20.37 17.65     M3.2 23 0
26 Cl* NGC 2632 JS 250 Er* 08 38 51.0320308416 +19 51 01.979837064   20.11 17.44     M3.0 20 0
27 V* AX Cnc Er* 08 39 09.8595371160 +19 46 58.970470260   14.80       M2.0 28 0
28 Cl* NGC 2632 JC 155 * 08 39 16.7927747784 +19 47 42.635864220   18.58 16.42     M1.4 21 0
29 2MASS J08392244+2004548 BD? 08 39 22.4431169040 +20 04 54.756319188         14.40 M1.9 18 0
30 Cl* NGC 2632 JS 309 Ro* 08 39 41.0325214344 +19 59 28.833719928   17.053 15.339     M0V 25 0
31 Cl* NGC 2632 HSHJ 295 Er* 08 40 04.1650623936 +19 24 50.265031680   20.63 18.02     M3.4 24 0
32 NGC 2632 OpC 08 40 13 +19 37.3           ~ 1390 0
33 Cl* NGC 2632 JC 211 * 08 40 28.2323613048 +18 56 08.936619648   17.75 15.71     M1V 23 0
34 Cl* NGC 2632 JS 365 Er* 08 40 30.5852900904 +19 55 58.791763488   19.78 17.22     M3V 23 0
35 ATO J130.1737+20.2700 V* 08 40 41.7091563216 +20 16 12.252353448   17.190 16.581     ~ 3 0
36 Cl* NGC 2632 JC 242 * 08 41 10.5196833312 +18 16 07.114959480   18.35 16.21     M1.7 16 0
37 V* CI Cnc Er* 08 41 24.1798802424 +18 14 02.750000532   17.082 15.787     M1.0 19 0
38 Cl* NGC 2632 JS 430 Er* 08 41 24.4592999304 +20 07 49.500023052   18.87 16.46     M2.5 24 0
39 Cl* NGC 2632 JC 270 * 08 41 50.0554774848 +19 39 34.611804216   18.61 16.28     M1.4 16 0
40 Cl* NGC 2632 JC 274 * 08 41 59.3500964520 +19 44 45.043527408   17.85 16.48     M1.2 20 0
41 LINEAR 4934114 EB* 08 42 14.4263646768 +19 58 19.783318080     16.42     ~ 6 0
42 Cl* NGC 2632 JS 489 * 08 42 34.8571566744 +20 59 40.839287568   18.05 15.86     M1.0 13 0
43 Cl* NGC 2632 HSHJ 428 Er* 08 42 37.6159764552 +19 59 18.894925068           M3.5 19 0
44 Cl* NGC 2632 JS 497 * 08 42 42.0730749120 +19 17 32.305764264   16.00 14.52     K7.3 19 0
45 Cl* NGC 2632 JS 505 Er* 08 42 49.6807220232 +18 51 35.066366460   18.03 16.00     M1.5 20 0
46 Cl* NGC 2632 JS 506 Er* 08 42 52.2852377208 +19 51 45.902243412   19.48 16.99   14.05 M2.5 20 0
47 Cl* NGC 2632 JS 525 * 08 43 12.9185361936 +18 31 50.778356196   19.23 16.87     M1.9 20 0
48 Cl* NGC 2632 JS 545 V* 08 43 44.7342725520 +21 12 34.314469812   16.98 15.19     M0.8 15 0
49 Cl* NGC 2632 JS 634 * 08 46 38.2194884706 +19 52 44.833091948   18.85 16.37     M2.5 13 0
50 Cl* NGC 2632 JS 644 * 08 47 09.1159374672 +18 11 37.336574292   19.70 17.15     M2.7 11 0
51 LINEAR 5272753 RR* 08 48 03.5800215816 +19 13 40.642048596     16.19     ~ 12 0
52 LINEAR 5244248 RR* 08 49 20.4953690640 +18 26 17.396937132   16.1 15.72 15.9   ~ 11 0
53 2MASS J08492676+1831195 Ro* 08 49 26.7656915448 +18 31 19.535350512   16.819 15.396     M0.5 14 0
54 ATO J132.4604+19.5422 V* 08 49 50.4959880504 +19 32 32.085042720   15.0 14.6     ~ 3 0
55 2MASS J08504984+1948364 EB* 08 50 49.8423820800 +19 48 36.547637508           M5V 32 0
56 2MASS J08505687+1936578 LM* 08 50 56.8730334720 +19 36 57.937967244           M2.5 9 0
57 CRTS J085112.6+184344 EB* 08 51 12.6331546656 +18 43 44.422609764     15.07     ~ 6 0
58 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 414 1
59 NGC 6811 OpC 19 37 22 +46 22.7   7.47 6.8     ~ 304 0

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2022.07.06-19:14:53

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