2014ApJ...794..146T

Query : 2014ApJ...794..146T

2014ApJ...794..146T - Astrophys. J., 794, 146 (2014/October-3)

Warm dust around cool stars: field M dwarfs with WISE 12 or 22 µm excess emission.

THEISSEN C.A. and WEST A.A.

Abstract (from CDS):

Using the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) spectroscopic catalog, we searched the WISE AllWISE catalog to investigate the occurrence of warm dust, as inferred from IR excesses, around field M dwarfs (dMs). We developed SDSS/WISE color selection criteria to identify 175 dMs (from 70,841) that show IR flux greater than the typical dM photosphere levels at 12 and/or 22 µm, including seven new stars within the Orion OB1 footprint. We characterize the dust populations inferred from each IR excess and investigate the possibility that these excesses could arise from ultracool binary companions by modeling combined spectral energy distributions. Our observed IR fluxes are greater than levels expected from ultracool companions (>3σ). We also estimate that the probability the observed IR excesses are due to chance alignments with extragalactic sources is <0.1%. Using SDSS spectra we measure surface gravity-dependent features (K, Na, and CaH 3) and find <15% of our sample indicates low surface gravities. Examining tracers of youth (Hα, UV fluxes, and Li absorption), we find <3% of our sample appear young, indicating we are observing a population of field stars ≳ 1 Gyr, likely harboring circumstellar material. We investigate age-dependent properties probed by this sample, studying the disk fraction as a function of Galactic height. The fraction remains small and constant to|Z| ∼ 700 pc and then drops, indicating little to no trend with age. Possible explanations for disks around field dMs include (1) collisions of planetary bodies, (2) tidal disruption of planetary bodies, or (3) failed planet formation.

Abstract Copyright: ∼

Journal keyword(s): circumstellar matter - infrared: stars - planet-disk interactions - stars: low-mass

VizieR on-line data: <Available at CDS (J/ApJ/794/146): catalog.dat catalog.fits>

Errata: erratum vol. 805, art.; 190 (2015)

Simbad objects: 184

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Number of rows : 184
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 2MASS J00103465+0008567 LM* 00 10 34.6426252824 +00 08 56.896528344           M1V 4 0
2 2MASS J00200804-0108535 LM* 00 20 08.0422670400 -01 08 53.566394820           M0V 4 0
3 2MASS J00201555+0039055 LM* 00 20 15.5575318824 +00 39 05.530211280           M3V 4 0
4 2MASS J00242101-0017595 LM* 00 24 21.0170971752 -00 17 59.612138736           M0V 4 0
5 2MASS J00244415+0004333 LM* 00 24 44.1574054848 +00 04 33.344101884           M5V 4 0
6 2MASS J00324181+0034162 LM* 00 32 41.8090090440 +00 34 16.228500996           M0V 4 0
7 2MASS J00324839-0010496 LM* 00 32 48.38629 -00 10 49.5101           M2V 4 0
8 2MASS J00345227+0013515 LM* 00 34 52.2649096464 +00 13 51.538253700           M3V 4 0
9 2MASS J00352542-1735094 LM* 00 35 25.4922152520 -17 35 09.555152604           M1V 3 0
10 2MASS J00353061+0030414 LM* 00 35 30.6026894232 +00 30 41.411219832           M1V 4 0
11 2MASS J00405121+1458141 LM* 00 40 51.2328994062 +14 58 14.188099780           M2V 4 0
12 2MASS J00455643+0039275 LM* 00 45 56.4389625912 +00 39 27.583053768           M4V 8 0
13 2MASS J00461685-0040555 LM* 00 46 16.85364 -00 40 55.3765           M2V 4 0
14 2MASS J00503466+0033502 LM* 00 50 34.6821809664 +00 33 50.204554128           M3V 4 0
15 2MASS J00515865-0036396 LM* 00 51 58.6472501688 -00 36 39.467301048           M1V 4 0
16 2MASS J00552857-0005081 LM* 00 55 28.5810723456 -00 05 07.941539328           M4V 6 0
17 2MASS J01102711-0001273 LM* 01 10 27.0864680616 -00 01 27.623969472           M3V 4 0
18 2MASS J01275143+0016333 LM* 01 27 51.4407654048 +00 16 33.242755116           M1V 5 0
19 2MASS J01282537+0016517 LM* 01 28 25.3753535400 +00 16 51.986704080           M1V 4 0
20 2MASS J01282808-0856418 LM* 01 28 28.1449932240 -08 56 42.420704388           M4V 3 0
21 2MASS J01310481+0033346 LM* 01 31 04.8146182896 +00 33 34.851466476           M2V 4 0
22 2MASS J01353165+2345534 LM* 01 35 31.6554027264 +23 45 53.458786440           M3V 3 0
23 2MASS J01424793+1503309 LM* 01 42 47.9345645808 +15 03 30.721721148           M4V 4 0
24 BD+20 307 SB* 01 54 50.3440413288 +21 18 22.461011784   9.57 9.01     G0 113 0
25 2MASS J01594062+0058559 LM* 01 59 40.6271140080 +00 58 56.075337012           M2V 4 0
26 2MASS J02145209-0903451 LM* 02 14 52.1126085720 -09 03 44.961885144           M5V 4 0
27 2MASS J02302553-0058598 LM* 02 30 25.5391232664 -00 58 59.641865328           M3V 4 0
28 2MASS J02440837+0026042 LM* 02 44 08.3634362688 +00 26 04.210110888           M6V 4 0
29 2MASS J02451555+0102463 LM* 02 45 15.5489532960 +01 02 46.355301816           M0V 3 0
30 2MASS J02533680-0639210 LM* 02 53 36.7887039576 -06 39 21.220226784           M4V 4 0
31 2MASS J03013750+0003190 LM* 03 01 37.5097709784 +00 03 19.651681404           M2V 4 0
32 2MASS J03053823-0044025 LM* 03 05 38.2290228408 -00 44 02.487307740           M7V 3 0
33 2MASS J03134277+0026412 LM* 03 13 42.7697458824 +00 26 41.173039608           M0V 5 0
34 2MASS J03151778+0010497 LM* 03 15 17.7972644784 +00 10 49.784330856           M3V 4 0
35 2MASS J03193364-0012126 LM* 03 19 33.6435271440 -00 12 12.710420640           M2V 4 0
36 2MASS J03233867-0108371 LM* 03 23 38.6702116056 -01 08 37.210711524           M3V 4 0
37 2MASS J03240380+0014082 LM* 03 24 03.8221174392 +00 14 08.249747028           M4V 4 0
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39 2MASS J05275604+0014594 Y*? 05 27 56.0426112792 +00 14 59.544481776           M4V 8 0
40 2MASS J05280030+0025466 LM* 05 28 00.3048483816 +00 25 46.680905604           M7V 3 0
41 ATO J083.0325+00.2847 Y*O 05 32 07.8082815792 +00 17 05.022229128           M2V 16 0
42 2MASS J05321559-0039001 LM* 05 32 15.5962847688 -00 39 00.212419800           M4V 6 0
43 2MASS J05331119+0013584 Y*? 05 33 11.2022238072 +00 13 58.581368436           M3V 8 0
44 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 281 0
45 NAME Ori Complex Cld 05 35.3 -05 23           ~ 481 0
46 NAME Ori I As* 05 38 -02.8           ~ 653 0
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50 2MASS J07264746+3939003 LM* 07 26 47.4654746472 +39 39 00.215991324           M8V 4 0
51 2MASS J07384822+2701337 LM* 07 38 48.2258313624 +27 01 33.717643896           M0V 4 0
52 2MASS J07472627+2414437 LM* 07 47 26.2782432912 +24 14 43.626100812           M2V 3 0
53 2MASS J07514479+2454061 LM* 07 51 44.7890560944 +24 54 06.128648532           M6V 4 0
54 2MASS J07530986+2019171 LM* 07 53 09.8496871872 +20 19 17.174845776           M7V 4 0
55 2MASS J07580296+2813558 LM* 07 58 02.9731790424 +28 13 55.683674040           M6V 4 0
56 2MASS J08003348+2201382 LM* 08 00 33.4937555304 +22 01 38.238942288           M5V 4 0
57 2MASS J08035778+0904181 LM* 08 03 57.7792209696 +09 04 18.245319780           M3V 3 0
58 NGC 2547 OpC 08 10 01.5 -49 12 08           ~ 445 0
59 2MASS J08120398+4223137 LM* 08 12 03.982 +42 23 13.63           M1V 4 0
60 2MASS J08143248+1817318 LM* 08 14 32.4831950544 +18 17 31.728445692           M2V 4 0
61 2MASS J08151353+0815541 LM* 08 15 13.5415500576 +08 15 54.117329940           M7V 3 0
62 2MASS J08181261+2931423 LM* 08 18 12.6181741752 +29 31 42.253898196           M5V 4 0
63 2MASS J08183316+1620354 LM* 08 18 33.1657735944 +16 20 35.462148900           M6V 3 0
64 2MASS J08211894+0416148 LM* 08 21 18.9438658320 +04 16 14.549804508           M4V 4 0
65 2MASS J08264573+4135543 LM* 08 26 45.7340905320 +41 35 54.278176992           M6V 4 0
66 2MASS J08361302+0900580 LM* 08 36 13.0324019880 +09 00 57.997226988           M3V 4 0
67 2MASS J08374471+2138487 LM* 08 37 44.7195302232 +21 38 48.691573476           M7V 8 0
68 2MASS J08385719+1825330 LM* 08 38 57.2008920744 +18 25 32.688119028           M9V 7 0
69 2MASS J08405082+5331051 LM* 08 40 50.8388049120 +53 31 05.227516668           M0V 3 0
70 * eta Cha Pu* 08 41 19.5125857944 -78 57 48.105898056 5.02 5.351 5.453     B8V 246 0
71 2MASS J08432901+1249461 LM* 08 43 29.0158545504 +12 49 46.201819656           M7V 5 0
72 2MASS J08475486+0929384 LM* 08 47 54.8653851816 +09 29 38.430434508           M2V 4 0
73 2MASS J08533302+2014536 Er* 08 53 33.0321815808 +20 14 53.742294168           M5V 28 0
74 2MASS J08554360+2816101 LM* 08 55 43.6038820896 +28 16 10.279696368           M2V 4 0
75 2MASS J09001727+2816163 LM* 09 00 17.2961682456 +28 16 16.282185708           M1V 4 0
76 2MASS J09021908+2358125 LM* 09 02 19.0931180184 +23 58 12.479183040           M7V 4 0
77 2MASS J09032690+2505522 LM* 09 03 26.9224122912 +25 05 52.123337736           M8V 6 0
78 2MASS J09054412+2755496 LM* 09 05 44.1152760312 +27 55 49.556027748           M4V 4 0
79 2MASS J09194961-0004136 LM* 09 19 49.6138486872 -00 04 13.637377956           M7V 6 0
80 2MASS J09270405+1641294 LM* 09 27 04.0547644200 +16 41 29.346224460           M7V 3 0
81 2MASS J09284074+2205569 LM* 09 28 40.7508670320 +22 05 57.015857292           M3V 3 0
82 2MASS J09285349+5707353 mul 09 28 53.49120 +57 07 35.3280   20.34 19.60     ~ 22 1
83 2MASS J09303933+1632534 LM* 09 30 39.3268796280 +16 32 53.435839704           M5V 3 0
84 2MASS J09310708+1006072 LM* 09 31 07.0878316848 +10 06 07.290397512           M6V 5 0
85 2MASS J09443279+1646055 LM* 09 44 32.7895427715 +16 46 05.439234883           M2V 4 0
86 2MASS J09445560+3137281 LM* 09 44 55.6123970112 +31 37 28.225733196           M2V 4 0
87 2MASS J09455149+0812420 LM* 09 45 51.4745071104 +08 12 41.913982944           M2V 3 0
88 2MASS J09531279+2635537 LM* 09 53 12.7573809864 +26 35 53.776215384           M7V 3 0
89 2MASS J09532519+4254191 LM* 09 53 25.2101943096 +42 54 19.199453184           M6V 4 0
90 2MASS J09534767+0257084 LM* 09 53 47.6782541616 +02 57 08.487597060           M8V 4 0
91 2MASS J09551262+3818514 LM* 09 55 12.6191009352 +38 18 51.351542352           M5V 5 0
92 TVLM 262-21257 LM* 10 03 07.1825648016 +44 11 07.718973144   20.6   19.4   M7V 8 0
93 2MASS J10123338+0424459 LM* 10 12 33.3912499872 +04 24 45.921426876           M6V 4 0
94 2MASS J10123397+3258266 LM* 10 12 33.9697660056 +32 58 26.602537260           M2V 4 0
95 2MASS J10160618+3351489 LM* 10 16 06.1835522232 +33 51 48.815926992           M4V 4 0
96 2MASS J10174059+2858518 LM* 10 17 40.5715370976 +28 58 51.726896112           M1V 4 0
97 2MASS J10204226+6215251 LM* 10 20 42.2636802000 +62 15 25.188048972           M7V 4 0
98 2MASS J10275481+1845122 LM* 10 27 54.7988963784 +18 45 12.196458036           M2V 3 0
99 2MASS J10290985+2412198 LM* 10 29 09.8520952704 +24 12 19.751313960           M8V 3 0
100 2MASS J10293873+5416543 LM* 10 29 38.7201704232 +54 16 54.673554252           M2V 3 0
101 2MASS J10334856+0831222 LM* 10 33 48.5724971736 +08 31 22.264768092           M7V 5 0
102 2MASS J10360188+1011148 LM* 10 36 01.9335945960 +10 11 14.678561593           M8V 5 0
103 2MASS J10390965+5937453 LM* 10 39 09.6546387312 +59 37 45.320111040           M0V 4 0
104 2MASS J10423183+0931131 LM* 10 42 31.8694283568 +09 31 13.471402980           M6V 5 0
105 2MASS J10465126+5144421 LM* 10 46 51.2697428520 +51 44 42.282024108           M7V 4 0
106 LP 214-46 LM* 11 09 47.7010067304 +38 19 20.116290180   20.0   18.0   M2V 6 0
107 2MASS J11302506+2914170 LM* 11 30 25.0450203912 +29 14 16.853374824           M5V 4 0
108 2MASS J11355172+5306438 LM* 11 35 51.7329202536 +53 06 43.820765316           M6V 6 0
109 2MASS J11490582+3902454 LM* 11 49 05.8216058136 +39 02 45.244781592           M5V 4 0
110 SIPS J1149-0153 LM* 11 49 12.3207747792 -01 53 00.556288404           M9V 14 0
111 2MASS J11591235+1846538 LM* 11 59 12.3460637472 +18 46 53.827743360           M8V 3 0
112 2MASS J12004675+3746319 LM* 12 00 46.7521275624 +37 46 32.004689412           M5V 4 0
113 2MASS J12025250+6226130 LM* 12 02 52.5101255808 +62 26 12.926538708           M0V 4 0
114 2MASS J12033372+4914395 LM* 12 03 33.7008924552 +49 14 39.644013948           M1V 4 0
115 2MASS J12042861+3257571 LM* 12 04 28.6187558880 +32 57 57.008202948           M2V 4 0
116 2MASS J12044627+4025584 LM* 12 04 46.2381210864 +40 25 58.480611384           M4V 4 0
117 2MASS J12065280+2717064 LM* 12 06 52.8085091736 +27 17 06.335299356           M2V 3 0
118 2MASS J12092233-0021014 LM* 12 09 22.3221363024 -00 21 01.546238340           M1V 4 0
119 2MASS J12101946-0101248 LM* 12 10 19.4674953456 -01 01 24.994987968           M1V 4 0
120 2MASS J12122212+6000322 LM* 12 12 22.1199129000 +60 00 32.096490444           M1V 4 0
121 2MASS J12204242+4809067 LM* 12 20 42.4268087232 +48 09 06.885260136   21.03   17.82   M0V 5 0
122 2MASS J12213504+3507467 LM* 12 21 35.0737522920 +35 07 46.822608768           M4V 4 0
123 2MASS J12251592+4856522 LM* 12 25 15.9446155800 +48 56 52.063993320           M4V 4 0
124 2MASS J12305511+3440278 LM* 12 30 55.1098818528 +34 40 27.893746740           M3V 3 0
125 2MASS J12313819+5753428 LM* 12 31 38.1189739224 +57 53 42.848220300   19.31   16.42   M0V 5 0
126 2MASS J12420385+3455379 LM* 12 42 03.85482 +34 55 38.0467           M6V 5 0
127 2MASS J12562402+6256480 LM* 12 56 24.0619641072 +62 56 48.260857920           M6V 4 0
128 2MASS J12574011+4301137 LM* 12 57 40.1106821760 +43 01 13.742343228           M2V 4 0
129 2MASS J13020824+3515253 LM* 13 02 08.2549189320 +35 15 25.318176984           M2V 3 0
130 2MASS J13021239+4359204 LM* 13 02 12.4300417560 +43 59 20.167817856           M8V 4 0
131 2MASS J13312669+1909506 LM* 13 31 26.7001333632 +19 09 50.568327792           M8V 3 0
132 2MASS J13340257+1016165 LM* 13 34 02.5851212400 +10 16 16.588815744           M2V 3 0
133 2MASS J13415703+5033199 LM* 13 41 57.0428014248 +50 33 20.103528132           M2V 3 0
134 2MASS J13442116+1244215 LM* 13 44 21.1646545392 +12 44 21.356497788           M2V 4 0
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139 2MASS J14335597+6118383 LM* 14 33 56.0613802584 +61 18 38.630779452           M3V 4 0
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141 2MASS J14512643+5904374 LM* 14 51 26.4402982464 +59 04 37.399378260           M7V 4 0
142 2MASS J14555416+3918389 LM* 14 55 54.1679970192 +39 18 38.902137516           M7V 4 0
143 2MASS J15020662+4405534 LM* 15 02 06.6189647232 +44 05 53.552217552           M6V 4 0
144 2MASS J15042886+0502226 LM* 15 04 28.8797266354 +05 02 22.303061955           M2V 3 0
145 2MASS J15161044-0142373 LM* 15 16 10.4379958224 -01 42 37.264178232           M1V 5 0
146 2MASS J15283101+3803060 LM* 15 28 31.0078339464 +38 03 06.065984268           M5V 5 0
147 2MASS J15283450+1529304 LM* 15 28 34.5100422312 +15 29 30.482763108           M2V 3 0
148 2MASS J15305664+2054104 LM* 15 30 56.6459442072 +20 54 10.284648588           M1V 3 0
149 2MASS J15310982+1555368 LM* 15 31 09.833 +15 55 36.96           M3V 3 0
150 2MASS J15313913+5433383 LM* 15 31 39.1392305280 +54 33 38.266948368           M9V 6 0
151 LSPM J1534+4328 LM* 15 34 01.7065141728 +43 28 32.773576728   19.5   17.6   M1V 5 0
152 2MASS J15365747-0203141 LM* 15 36 57.4702226232 -02 03 14.378831856           M7V 4 0
153 2MASS J15382549+3228444 LM* 15 38 25.4903990448 +32 28 44.555971368           M3V 5 0
154 2MASS J15435191+3016289 LM* 15 43 51.9115647888 +30 16 28.863818832           M2V 4 0
155 2MASS J15440964+5022337 LM* 15 44 09.6385542168 +50 22 33.761657280           M6V 4 0
156 2MASS J15450475+2206520 LM* 15 45 04.7555667000 +22 06 51.854217732           M1V 3 0
157 2MASS J15465511+3141187 LM* 15 46 55.1130823824 +31 41 18.751571952           M6V 4 0
158 2MASS J15475471+5248575 LM* 15 47 54.7056965088 +52 48 57.477601368           M1V 6 0
159 2MASS J15483149+4253068 LM* 15 48 31.4760688656 +42 53 06.995529996           M5V 5 0
160 2MASS J15520890+3255159 LM* 15 52 08.9110902072 +32 55 15.770213364           M2V 4 0
161 2MASS J15524128+3638495 LM* 15 52 41.2841346840 +36 38 49.526153772           M3V 4 0
162 2MASS J15524706+3518100 LM* 15 52 47.0762882400 +35 18 07.390987164           M3V 4 0
163 2MASS J16035590+2401516 LM* 16 03 55.8981287328 +24 01 51.367256796           M3V 4 0
164 2MASS J16043629+3429083 LM* 16 04 36.2957524800 +34 29 08.422249236           M9V 4 0
165 2MASS J16055652+0954135 LM* 16 05 56.5290325680 +09 54 13.678852680           M3V 3 0
166 2MASS J16180127+1922074 LM* 16 18 01.2729191544 +19 22 07.416233940           M2V 3 0
167 2MASS J16202649+2731469 LM* 16 20 26.4941449440 +27 31 47.090586648           M4V 4 0
168 2MASS J16354627+3504278 LM* 16 35 46.266 +35 04 27.65           M0V 4 0
169 * zet Oph Be* 16 37 09.5400587698 -10 34 01.509742704 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1908 0
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171 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
172 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0V 2787 1
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176 2MASS J21145338+0922365 LM* 21 14 53.3782099032 +09 22 36.515076888           M0V 4 0
177 2MASS J21504005+0006376 LM* 21 50 40.0591904328 +00 06 37.679612832           M3V 3 0
178 LP 459-140 LM* 22 06 27.7648351200 +20 39 59.252015304   20.5   17.5   M3V 5 0
179 2MASS J22375421-0852560 LM* 22 37 54.208 -08 52 56.16           M1V 4 0
180 2MASS J22483305+1307022 LM* 22 48 33.0576141120 +13 07 02.133218748           M7V 4 0
181 2MASS J23324510+4658472 LM* 23 32 45.0967428144 +46 58 47.337883716           M0V 3 0
182 2MASS J23335840+0050119 LM* 23 33 58.4084596560 +00 50 11.893562844           M9V 14 0
183 2MASS J23351273+4638146 LM* 23 35 12.7341733920 +46 38 14.609773896           M1V 3 0
184 2MASS J23560733+0044566 LM* 23 56 07.3461004152 +00 44 56.543563824           M0V 3 0

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