2003AJ....125.2621R

Query : 2003AJ....125.2621R

2003AJ....125.2621R - Astron. J., 125, 2621-2629 (2003/May-0)

A first look at white dwarf-M dwarf pairs in the Sloan Digital Sky Survey.

RAYMOND S.N., SZKODY P., HAWLEY S.L., ANDERSON S.F., BRINKMANN J., COVEY K.R., McGEHEE P.M., SCHNEIDER D.P., WEST A.A. and YORK D.G.

Abstract (from CDS):

We have identified 109 white dwarf (WD)-M dwarf pairs in the Sloan Digital Sky Survey (SDSS) with g<20th magnitude. For each system we determined the temperature of the WD primary and the spectral type of the M dwarf secondary. Using Hα emission as a proxy for the chromospheric activity level of the M dwarf, we investigated correlations between the activity level and properties of the system. Compared with field M dwarfs previously observed in the Palomar/MSU Survey, we see a slightly higher active fraction of early-type stars, with activity levels similar to the field. We have conducted follow-up observations at the ARC 3.5 m telescope to obtain radial velocity information and to search for short-period binaries that may be on the verge of interacting. We report on one system with a 4.1 hr period and several additional systems with significant velocity variations.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Spectroscopic - Stars: Activity - Stars: Late-Type - Stars: White Dwarfs

VizieR on-line data: <Available at CDS (J/AJ/125/2621): table1.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD; there are some issues with cross-identifications or classifications.

Simbad objects: 114

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Number of rows : 114
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 GALEX J001726.6-002449 ** 00 17 26.6348887072 -00 24 51.475678762           DA+dMe 16 0
2 GALEX J001733.5+004030 WD* 00 17 33.5576639833 +00 40 29.957485858           DA 12 0
3 SDSS J001733.60+004030.6 LM* 00 17 33.6150357408 +00 40 30.744282756           M5V 11 0
4 PB 5848 WD* 00 17 49.2488922216 -00 09 55.491215796   16.5       DA+dMe 17 0
5 PB 5967 ** 00 27 50.0043635280 -00 10 23.471392764   18       DB+M3 14 0
6 GALEX J005208.3-005134 ** 00 52 08.4284616336 -00 51 34.651603080           DA+dMe 18 0
7 GALEX J005457.6-002517 WD* 00 54 57.6192143328 -00 25 17.104219752           DA+M 21 0
8 GALEX J012259.5+154254 WD* 01 22 59.5268243184 +15 42 53.852521680   18.2   18.7   DA+M 16 0
9 GALEX J012527.1+010255 ** 01 25 27.1269133872 +01 02 55.214829600   18.6   18.6   DA+dM 7 0
10 GALEX J014152.4-005242 ** 01 41 52.5134496120 -00 52 41.682994104           DA+dMe 16 0
11 SDSS J020351.29+004025.1 ** 02 03 51.2915781048 +00 40 25.034793636           DA+dM 15 0
12 UCAC4 452-002718 PM* 02 08 06.3040117416 +00 18 34.677083916   16.77 15.58 15.42   M5Ve 13 0
13 GALEX J020806.4+001834 WD* 02 08 06.4224824856 +00 18 33.945744960           DA 14 0
14 GALEX J021239.4+001856 ** 02 12 39.4570480536 +00 18 56.986986636           DA+dM 14 0
15 SDSS J021411.35+011533.3 ** 02 14 11.35848 +01 15 33.1992           DA+dMe 10 0
16 SDSS J021534.78+141846.7 ** 02 15 34.7746362984 +14 18 46.632220308           DA+dMe 11 0
17 GALEX J022835.8-074031 WD* 02 28 35.9175173544 -07 40 32.431293444           DA+M 17 0
18 PHL 4179 ** 02 35 15.1317938736 -00 07 37.056361944   16.8       DA+dMe 15 0
19 2MASS J02464256+0041372 ** 02 46 42.5574093864 +00 41 37.120650540           dMe+DA 25 0
20 PB 9375 WD* 02 56 10.6045206552 -07 30 24.607741680   17       DA+M 22 0
21 SDSS J025622.04-065036.2 ** 02 56 22.0421785248 -06 50 36.200429844           DA+M 13 0
22 PB 6955 ** 02 58 17.9007882144 +01 09 45.875007036   18.29 18.30     DA+dMe 32 0
23 SDSS J030302.44-062829.9 ** 03 03 02.4359044344 -06 28 29.878049604           DA6+M: 12 0
24 SDSS J030302.98-062829.5 * 03 03 02.9913220608 -06 28 29.542563552           M4.5Ve 2 0
25 GALEX J030544.4-074941 ** 03 05 44.4088794600 -07 49 41.255755932           DA+dMe 18 0
26 PB 7003 WD* 03 06 07.1909714208 -00 31 14.373852924   16.463 16.258     DA2+dM 39 0
27 GALEX J030859.8-002735 ** 03 08 59.8636592112 -00 27 35.760291912           DA+dM 14 0
28 GALEX J032136.5-001630 ** 03 21 36.5507578032 -00 16 30.543251160           DA+M 19 0
29 SDSS J032422.38-000516.1 ** 03 24 22.3943523072 -00 05 16.118794356           DA+M 16 0
30 SDSS J032428.78-004613.8 Sy1 03 24 28.7769344904 -00 46 13.817171712   18.90 18.43 18.6   ~ 19 0
31 GALEX J032758.1-002215 ** 03 27 58.1588416176 -00 22 15.448148436           DA+dM 14 0
32 GALEX J032842.9+001749 ** 03 28 42.9297693600 +00 17 49.742927880           DA+dM 18 0
33 SDSS J033548.59+003832.3 ** 03 35 48.5932191600 +00 38 31.954895088           DA+M 21 0
34 SDSS J034831.09-061400.5 ** 03 48 31.08624 -06 14 00.5532           DA+M 14 0
35 GALEX J042328.1-003803 ** 04 23 28.1255078256 -00 38 01.563043416           DA+dM3 6 0
36 SDSS J074011.18+385909.1 ** 07 40 11.18112 +38 59 09.0240           DA+dMe 14 0
37 GALEX J074301.9+410655 ** 07 43 01.9379315040 +41 06 55.269353232           DA+M 19 0
38 GALEX J074730.5+430403 ** 07 47 30.5742587136 +43 04 03.616786956           DA+dMe 17 0
39 GALEX J075009.9+381642 WD* 07 50 09.9002831448 +38 16 41.659056948           DA+M 15 0
40 SDSS J075223.15+433212.2 ** 07 52 23.1484735368 +43 32 12.203000844           DA+dMe 12 0
41 GALEX J083807.9+530254 WD* 08 38 08.0008363032 +53 02 54.324813804           D+dM3 15 0
42 SDSS J084833.60+005840.0 ** 08 48 33.59592 +00 58 40.0548           DA+dMe 16 0
43 GALEX J090925.4+533701 ** 09 09 25.3864645896 +53 37 00.985188576           DA+M 18 0
44 GALEX J091849.5+545602 ** 09 18 49.5506508984 +54 56 01.882792176           DA+dM 13 0
45 GALEX J092451.6-001736 ** 09 24 51.6362890885 -00 17 36.449063659           DA5+M: 19 0
46 GALEX J092452.4+002449 WD* 09 24 52.4057728488 +00 24 48.996111996           DA+dMe 29 0
47 GALEX J093918.4+572901 WD* 09 39 18.49464 +57 29 01.3884           DA+M 17 0
48 SDSS J095108.74+025507.6 WD* 09 51 08.7435959352 +02 55 07.527165996           DA5+M: 17 0
49 GALEX J095705.9+615254 WD* 09 57 05.9948106895 +61 52 54.094658449           DA+dM 13 0
50 GALEX J100609.1+004416 WD* 10 06 09.1742329440 +00 44 17.077582896           DA7+M 22 0
51 2QZ J100953.7-002853 WD* 10 09 53.6995549344 -00 28 53.479375572   19.55       DA+M 20 0
52 GALEX J101647.2-010906 WD* 10 16 47.2117603992 -01 09 07.236115920           DA+dMe 20 0
53 GALEX J103743.5+655448 WD* 10 37 43.6023491808 +65 54 48.085777764           DA+M 15 0
54 2QZ J104517.7-001834 WD* 10 45 17.7876523368 -00 18 33.918747984           DA+M4 22 0
55 SDSS J105853.59+005608.6 ** 10 58 53.6030663784 +00 56 08.475093024           DA+M 11 0
56 2QZ J112307.3+003215 ** 11 23 07.3658942736 +00 32 16.220965020           DA+M5 19 0
57 GALEX J112357.7-011026 WD* 11 23 57.7269609816 -01 10 27.550090524           DA3:+M 21 0
58 2QZ J112623.8+010856 ** 11 26 23.8792374456 +01 08 56.987565216           DA+M2 18 0
59 2QZ J112748.2-002901 WD* 11 27 48.2652981192 -00 28 59.979218016   18.40       DA4.5 24 0
60 SDSS J112909.50+663704.4 ** 11 29 09.5002378536 +66 37 04.344757932           DA+M 22 0
61 SDSS J113457.72+655408.7 ** 11 34 57.72504 +65 54 08.6688   17.95 18.06     DC+M4V 16 0
62 V* RZ Leo CV* 11 37 22.2524330304 +01 48 58.617459936     19.6     DA+dM2 170 0
63 2QZ J113800.3-001145 ** 11 38 00.35040 -00 11 44.4696   18.95       DA+M 22 0
64 LBQS 1140+0026 ** 11 43 12.5738603472 +00 09 26.642788056   18.45 18.3     DA4.0+dM 36 0
65 GALEX J115157.0-000725 WD* 11 51 56.9492345280 -00 07 25.478219460   18.39       DA5+M 25 0
66 GALEX J120507.9+031233 WD* 12 05 07.98672 +03 12 34.5312   17.9   18.7   DA+M 18 0
67 2QZ J121033.7-004645 WD* 12 10 33.76896 -00 46 44.4756   18.72       DC+M3 19 0
68 GALEX J122339.5-005630 WD* 12 23 39.6079953768 -00 56 31.216473528           DA+M6 26 0
69 2QZ J123922.3+005548 ** 12 39 22.3346781600 +00 55 48.525009276   19.48 19.4     DA3.0+dM 19 0
70 2QZ J125207.1+012156 ** 12 52 07.1808522792 +01 21 56.866276764           DA+dM 18 0
71 2QZ J125250.0-020608 ** 12 52 50.0169048360 -02 06 08.346935124   19.25       DA+dMe 18 0
72 LBQS 1320-0239 ** 13 23 12.6423233400 -02 54 56.035888308           DC+M 15 0
73 2QZ J133953.8+015614 ** 13 39 53.8886895408 +01 56 14.837596224           DA+M3 17 0
74 SDSS J140723.04+003841.8 ** 14 07 23.03568 +00 38 41.8128           DA3+M 17 0
75 SDSS J141220.70+654123.3 WD* 14 12 20.6971383768 +65 41 23.293536432           DA+M 15 0
76 SDSS J141731.25+015059.0 ** 14 17 31.2445236792 +01 50 58.988948244           DA+M 17 0
77 LBQS 1437-0053 CV* 14 39 47.6208102216 -01 06 06.781449132           DA1+Me 32 0
78 2QZ J144258.5+001031 WD* 14 42 58.4717055432 +00 10 31.549276308           DB3.5+M 22 0
79 SDSS J145300.99+005557.1 ** 14 53 00.9843211560 +00 55 57.091992312           DA+dMe 18 0
80 SDSS J145527.72+611504.8 ** 14 55 27.7222471512 +61 15 04.587597684           DA+M 13 0
81 GALEX J150118.4+042233 WD* 15 01 18.4050506736 +04 22 32.317627764   19.35 19.57     DB+M 14 0
82 LP 621-58 WD* 15 02 31.66080 +01 10 46.3224   18.2   18.3 17.59 DA+dMe 26 0
83 GALEX J150648.1+002716 ** 15 06 48.1205090544 +00 27 16.389654732           DA+dMe 17 0
84 SDSS J151058.76+004112.7 WD* 15 10 58.7645264448 +00 41 12.705352908           DA+M 19 0
85 GALEX J152717.3+002413 WD* 15 27 17.2580466336 +00 24 13.318072056           DA+M 14 1
86 GALEX J152933.2+002031 WD* 15 29 33.2587800336 +00 20 31.217685504           DA4+M: 33 0
87 SDSS J154219.45+032311.0 ** 15 42 19.44672 +03 23 11.0112           DA+dM 14 0
88 SDSS J155554.25+545417.4 ** 15 55 54.2624986152 +54 54 17.666062128           DA+dM 13 0
89 SDSS J161033.87+491536.7 ** 16 10 33.8489016072 +49 15 36.909848916           DA+M 16 0
90 SDSS J161145.89+010327.8 ** 16 11 45.8881738632 +01 03 27.855283356           DA+dMe 20 0
91 SDSS J164615.60+422349.3 ** 16 46 15.6124491192 +42 23 49.275912264           DA+M 22 0
92 GALEX J165005.2+390426 WD* 16 50 05.1567950664 +39 04 26.343482520           DA+M 16 0
93 GALEX J170459.7+384432 WD* 17 04 59.7116581080 +38 44 32.952765696           DA+M 17 0
94 GALEX J171145.5+555445 ** 17 11 45.4151371824 +55 54 44.430058944           DA+M 19 0
95 SDSS J171301.85+625135.9 ** 17 13 01.8452058552 +62 51 35.885993796           DA+dMe 14 0
96 SDSS J171611.13+544346.4 ** 17 16 11.1513168168 +54 43 46.461313524           DA+M 13 0
97 GALEX J171810.2+610113 WD* 17 18 10.1557623528 +61 01 14.025822096           DA+M 24 0
98 SDSS J171955.23+625106.8 ** 17 19 55.2201311808 +62 51 06.835477752           DA+M 14 0
99 SDSS J172043.87+560109.3 ** 17 20 43.87032 +56 01 09.2676           DA+dMe 10 0
100 GALEX J172433.6+623409 ** 17 24 33.6959220576 +62 34 10.230866040   16.9   17.4   DA+dM 16 0
101 SDSS J172441.80+593103.3 ** 17 24 41.8022628504 +59 31 03.288512676           DA+M 15 0
102 SDSS J172601.55+560527.1 ** 17 26 01.5465548184 +56 05 27.014805600           DA+dMe 15 0
103 SDSS J172715.57+542938.2 ** 17 27 15.5664709992 +54 29 38.048962380           DA+dMe 13 0
104 GALEX J172831.8+620426 ** 17 28 31.8440317416 +62 04 26.491578132           DA+dMe 14 0
105 SDSS J173101.49+623316.0 ** 17 31 01.4958522528 +62 33 15.941287980           DA+dMe 27 0
106 SDSS J214720.96+130227.4 ** 21 47 20.9644477806 +13 02 27.455167775           DA+dMe 13 0
107 SDSS J221714.50+004601.1 ** 22 17 14.4981858840 +00 46 01.249790556           DA+M 13 0
108 SDSS J231221.60+010127.0 ** 23 12 21.60840 +01 01 27.0300           DB+M3 15 1
109 GALEX J231230.7+005322 WD* 23 12 30.7975434048 +00 53 21.709836996           DA+dMe 17 0
110 SDSS J233919.64-000233.5 ** 23 39 19.64040 -00 02 33.4752           dM+DA 10 0
111 GALEX J234459.6+002749 WD* 23 44 59.6270212008 +00 27 49.809003228           DC 14 0
112 2MASS J23445964+0027498 mul 23 44 59.72928 +00 27 49.8240           DC+M5 13 0
113 SDSS J234459.80+002749.9 LM* 23 44 59.8020015672 +00 27 50.004083340           M3V 4 0
114 PB 5533 ** 23 46 49.9525759416 -00 20 31.915822884   18       DA+dM 14 0

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