2006AJ....131.3016S

Query : 2006AJ....131.3016S

2006AJ....131.3016S - Astron. J., 131, 3016-3027 (2006/June-0)

A large-area search for low-mass objects in Upper Scorpius. I. The photometric campaign and new brown dwarfs.

SLESNICK C.L., CARPENTER J.M. and HILLENBRAND L.A.

Abstract (from CDS):

We present a wide-field photometric survey covering ∼200 deg2 toward the Upper Scorpius OB association. Data taken in the R and I bands with the Quest-2 camera on the Palomar 48 inch (1.2 m) telescope were combined with the Two Micron All Sky Survey JHKSsurvey and used to select candidate pre-main-sequence stars. Follow-up spectroscopy with the Palomar 200 inch (5.1 m) telescope of 62 candidate late-type members identified 43 stars that have surface gravity signatures consistent with association membership. From the optical/near-infrared photometry and derived spectral types we construct an H-R diagram for the new members and find 30 likely new brown dwarfs, nearly doubling the known substellar population of the Upper Scorpius OB association. Continuation of our spectroscopic campaign should reveal hundreds of new stellar and substellar members.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: Name: Upper Scorpius - Stars: Low-Mass, Brown Dwarfs - Stars: Pre-Main-Sequence

VizieR on-line data: <Available at CDS (J/AJ/131/3016): table1.dat table2.dat>

Nomenclature: Table 1: [SCH2006] JHHMMSSss+DDMMSSss N=65.

CDS comments: Paragr.3.2: DENIS-P 16007.5-181056.4 is a misprint for 161007.5 (DENIS-P J161007.5-181056), MH 05 not identified.

Simbad objects: 73

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Number of rows : 73
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 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
2 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
3 Wolf 359 PM* 10 56 28.9208702274 +07 00 53.003285286 16.706 15.541 13.507 11.684 9.507 dM6 775 0
4 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 750 1
5 2MASS J15563311-1807421 PM* 15 56 33.1123353360 -18 07 42.412041552       19.7 16.5 M7 5 0
6 2MASS J15582386-1531036 * 15 58 23.8555486248 -15 31 03.677433528       16.1 13.9 M4.5 3 0
7 2MASS J15583162-2402538 Or* 15 58 31.6209570456 -24 02 53.832096708       17.5 15.0 M4.5 19 0
8 2MASS J15594802-2227162 Or* 15 59 48.0231409320 -22 27 16.298348112       19.1 16.5 M7.5 18 0
9 2MASS J16014769-2441011 Or* 16 01 47.6908002336 -24 41 01.228522956       18.5 15.9 M5 17 0
10 2MASS J16031125-1345451 * 16 03 11.2523868192 -13 45 45.059068116       17.2 15.5 M5 1 0
11 2MASS J16032871-2158356 * 16 03 28.7150581392 -21 58 35.690703312       18.9 16.7 K3: 6 0
12 UCAC4 332-078931 Or* 16 04 04.5397239576 -23 46 37.888751424       15.3 13.3 M4 18 0
13 UScoCTIO 110 Or* 16 04 43.0361205792 -23 18 25.970702328       19.0 15.9 M6.5 26 0
14 ATO J241.3262-17.9392 Or* 16 05 18.3012085392 -17 56 21.139262160       15.2 13.1 M4 14 0
15 2MASS J16053077-2246200 Or* 16 05 30.7818045888 -22 46 20.048389032       18.8 16.1 M6 20 0
16 2MASS J16070401-1435257 PM* 16 07 04.0129733520 -14 35 25.941973596       15.9 14.2 M4 4 0
17 2MASS J16075850-2039485 Or* 16 07 58.5010573560 -20 39 48.578293764       18.4 15.8 M6 22 0
18 SIPS J1609-2158 PM* 16 09 12.5096974896 -21 58 22.067861700       18.7 16.3 M5 5 0
19 2MASS J16092938-2343121 LM* 16 09 29.3834181216 -23 43 11.952313176       19.0 16.5 M7.5 18 0
20 2MASS J16093019-2059536 LM* 16 09 30.1908214320 -20 59 53.693531556       18.8 16.2 M6 27 0
21 2MASS J16095990-2155424 LM* 16 09 59.9100261648 -21 55 42.590244468       19.3 16.4 M6.5 21 0
22 DENIS J161007.5-181056 LM* 16 10 07.5316100736 -18 10 56.711058780           M6 21 0
23 2MASS J16103876-1829235 Or* 16 10 38.7733317720 -18 29 23.556347664       19.2 16.5 M6 17 0
24 2MASS J16111711-2217173 Or* 16 11 17.1223539048 -22 17 17.387135448       19.7 16.8 M7.5 24 0
25 2MASS J16112959-1900292 Or* 16 11 29.5945514328 -19 00 29.265815556       19.0 16.462 M6 19 0
26 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
27 2MASS J16121185-2047267 LM* 16 12 11.8639614888 -20 47 26.674202256       18.7 15.9 M6.5 26 0
28 2MASS J16123759-2349234 Or* 16 12 37.5902432400 -23 49 23.281445640       18.5 16.0 M6 17 0
29 2MASS J16124692-2338408 Or* 16 12 46.9237078416 -23 38 40.788541860       18.7 15.9 M6 27 0
30 2MASS J16131211-2305031 Or* 16 13 12.1196002512 -23 05 03.303030048       19.1 16.4 M6.5 23 0
31 2MASS J16132577-1737354 Or* 16 13 25.7684238912 -17 37 35.542879536       16.0 13.9 M4 13 0
32 2MASS J16141974-2428404 Or* 16 14 19.7410117128 -24 28 40.480240332       18.7 16.0 M6 23 0
33 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
34 2MASS J16151116-2420153 Or* 16 15 11.1618119832 -24 20 15.406503612       19.0 16.3 M6 23 0
35 2MASS J16155507-2444365 Or* 16 15 55.0788886512 -24 44 36.525085188       18.6 15.7 M6 22 0
36 2MASS J16172505-2350380 Or* 16 17 25.0441256160 -23 50 38.032670436       18.8 16.1 M5 18 0
37 2MASS J16174539-2353360 Or* 16 17 45.4023178656 -23 53 36.048897168       19.2 16.3 M6 18 0
38 2MASS J16182501-2338106 Or* 16 18 25.0140764136 -23 38 10.672549440       18.9 16.1 M5 20 0
39 2MASS J16183140-2419522 Or* 16 18 31.4188887504 -24 19 52.208912712       19.5 16.6 M6.5 11 0
40 2MASS J16192532-2347073 * 16 19 25.3206320496 -23 47 07.274547204       18.5 16.1 M4 3 0
41 2MASS J16200757-2359150 Or* 16 20 07.5710545104 -23 59 14.966422476       18.5 15.6 M6 23 0
42 2MASS J16202128-2120289 Or* 16 20 21.2855533944 -21 20 28.924233180       18.5 15.5 M6 17 0
43 2MASS J16202523-2316033 Or* 16 20 25.2365321616 -23 16 03.409117068       18.9 16.6 M5.5 17 0
44 UCAC4 380-075110 PM* 16 20 27.5730867504 -14 08 28.748144760       16.0 13.8 M4.5 6 0
45 2MASS J16213591-2355035 LM* 16 21 35.9070168144 -23 55 03.473141304       19.5 16.5 M6 18 0
46 2MASS J16214806-2454250 * 16 21 48.0755880000 -24 54 25.029907092       19.7 17.4 M2 1 0
47 2MASS J16221576-2313490 Or* 16 22 15.7729979640 -23 13 49.208434104       18.3 15.8 M6 10 0
48 2MASS J16222160-2217307 LM* 16 22 21.6000134088 -22 17 30.751352052       18.0 15.5 M5 28 0
49 [SCH2006] J16223315-14422746 * 16 22 33.1503310200 -14 42 27.760399344       17.6 15.3 M5 4 0
50 2MASS J16224385-1951057 Or* 16 22 43.8550223256 -19 51 05.741328384       17.0 15.0 M8 26 0
51 2MASS J16235155-2317270 LM* 16 23 51.5628071736 -23 17 27.047605452       19.3 16.1 M8 26 0
52 2MASS J16235470-2438319 Or* 16 23 54.7238418912 -24 38 32.051862528       19.1 16.0 M6 22 0
53 2MASS J16242881-2038552 * 16 24 28.7991030652 -20 38 55.237628458       18.9 16.7 M3 3 0
54 2MASS J16252611-1540199 * 16 25 26.116 -15 40 19.91       17.4 15.3 M3 3 0
55 2MASS J16252860-1658509 Y*O 16 25 28.6008547080 -16 58 51.010581972       19.2 16.2 M8 18 0
56 2MASS J16252969-2214543 Or* 16 25 29.6996394768 -22 14 54.321721260       18.0 15.4 M5 24 0
57 2MASS J16253672-2224285 Or* 16 25 36.7309649832 -22 24 28.642940640       18.7 15.9 M7 19 0
58 2MASS J16254322-2230026 Or* 16 25 43.2220421160 -22 30 02.912262228       16.8 15.0 M5 25 0
59 2MASS J16263026-2336551 Or* 16 26 30.2739566544 -23 36 55.298648196       18.9 16.5 M6 18 0
60 2MASS J16265619-2213519 Or* 16 26 56.1972404808 -22 13 51.978051480       18.5 15.7 M6 27 0
61 2MASS J16270957-1620484 * 16 27 09.571 -16 20 48.44       17.4 15.4 M2 3 0
62 2MASS J16274799-2457134 Or* 16 27 47.9899092360 -24 57 13.455572364       19.2 16.2 M5 21 0
63 2MASS J16290665-2246494 * 16 29 06.6497001192 -22 46 49.661400684       18.6 16.2 M4 3 0
64 2MASS J16291910-1641014 PM* 16 29 19.1065119240 -16 41 01.438735344       16.8 14.6 M3.5 3 0
65 2MASS J16294879-2137086 Or* 16 29 48.7897012152 -21 37 08.826359916       16.9 14.5 M5Ve 17 0
66 2MASS J16300917-2411169 * 16 30 09.1838434440 -24 11 16.938156408       16.1 14.7 M2 1 0
67 2MASS J16301481-2243512 * 16 30 14.8232810088 -22 43 51.414220164       18.8 16.7 M3 3 0
68 2MASS J16301683-1557478 PM* 16 30 16.8249029808 -15 57 47.959814988       18.0 15.6 M5 4 0
69 [SCH2006] J16303166-16093250 * 16 30 31.6568741352 -16 09 33.199310628       17.5 15.2 M4 3 0
70 2MASS J16324727-2059375 Or* 16 32 47.2684120488 -20 59 37.584805668       17.9 15.5 M6 17 0
71 2MASS J16325285-2411001 * 16 32 52.8495527856 -24 11 00.191431248       17.1 15.9 ~ 1 0
72 LP 805-17 Y*O 16 32 56.0561254056 -16 58 28.159575420     16.33 15.9 13.7 M4 12 0
73 VB 10 PM* 19 16 57.6109547886 +05 09 01.600923413     17.30     M8V 499 1

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