2014A&A...570A.107R

Query : 2014A&A...570A.107R

2014A&A...570A.107R - Astronomy and Astrophysics, volume 570A107-107 (2014/10-1)

White dwarf-main sequence binaries from LAMOST: the DR1 catalogue.

REN J.J., REBASSA-MANSERGAS A., LUO A.L., ZHAO Y.H., XIANG M.S., LIU X.W., ZHAO G., JIN G. and ZHANG Y.

Abstract (from CDS):

White dwarf-main sequence (WDMS) binaries are used to study several different important open problems in modern astrophysics. The Sloan Digital Sky Survey (SDSS) identified the largest catalogue of WDMS binaries currently known. However, this sample is seriously affected by selection effects and the population of systems containing cool white dwarfs and early-type companions is under-represented. Here we search for WDMS binaries within the spectroscopic data release 1 of the Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) survey. LAMOST and SDSS follow different target selection algorithms. Hence, LAMOST WDMS binaries may be drawn from a different parent population and thus help in overcoming the selection effects incorporated by SDSS on the current observed population. We develop a fast and efficient routine based on the wavelet transform to identify LAMOST WDMS binaries containing a DA white dwarf and a M dwarf companion, and apply a decomposition/fitting routine to their LAMOST spectra to estimate their distances and measure their stellar parameters, namely the white dwarf effective temperatures, surface gravities and masses, and the secondary star spectral types. We identify 121 LAMOST WDMS binaries, 80 of which are new discoveries, and estimate the sample to be ∼90% complete. The LAMOST and SDSS WDMS binaries are found to be statistically different. However, this result is not due to the different target selection criteria of both surveys, but likely a simple consequence of the different observing conditions. Thus, the LAMOST population is found at considerably shorter distances (∼50-450pc) and is dominated by systems containing early-type companions and hot white dwarfs. Even though WDMS binaries containing cool white dwarfs are also missed by the LAMOST survey, the LAMOST WDMS binary sample dominated by systems containing early-type companions is an important addition to the current known spectroscopic catalogue. Future LAMOST observations however are required to increase the small number of LAMOST WDMS binaries.

Abstract Copyright: ∼

Journal keyword(s): binaries: spectroscopic - stars: low-mass - white dwarfs - methods: data analysis

VizieR on-line data: <Available at CDS (J/A+A/570/A107): table1.dat table2.dat table3.dat sp/*>

Simbad objects: 125

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Number of rows : 125
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 LAMOST J002237.90+334322.1 ** 00 22 37.9089834600 +33 43 22.032920424   17.6   15.5   D+M 3 0
2 LAMOST J002952.22+434205.8 ** 00 29 52.1967671136 +43 42 05.717507832           DA+M 3 0
3 GALEX J004232.5+415402 ** 00 42 32.5051420536 +41 54 02.971145484           DA+M 10 0
4 SDSS J004432.63+402635.4 * 00 44 32.6311494891 +40 26 35.535793039           M3 1 0
5 PTF1 J004546.00+415030.0 ** 00 45 45.909 +41 50 30.07   18.9   16.8   DA+M3 9 0
6 SDSS J005221.54+440335.6 WD* 00 52 21.546576 +44 03 35.48232   16.78 15.93 15.82   D+M2 3 0
7 GALEX J005601.4+400718 ** 00 56 01.4554549128 +40 07 18.457271292           D+M2 2 0
8 LAMOST J005636.91+383332.6 ** 00 56 36.9184289712 +38 33 32.875786764           D+M4 1 0
9 GALEX J005853.3+064849 WD* 00 58 53.4070710456 +06 48 49.084544952           DA 9 0
10 GALEX J011447.5+254229 WD* 01 14 47.5204949184 +25 42 29.781031536           DA+M 16 0
11 2MASS J01414183+3118529 * 01 41 41.8363692628 +31 18 52.879739325           dM2 4 0
12 GALEX J014141.8+311853 WD* 01 41 41.8698973831 +31 18 53.337246731           D 3 0
13 PB 6914 ** 02 53 01.6224060456 -01 30 06.550710552   17.4       DA+dM 20 0
14 GALEX J025306.3+001330 WD* 02 53 06.3643989809 +00 13 29.514927302           DA 11 0
15 2MASS J02530638+0013278 * 02 53 06.3831470064 +00 13 27.873534324           dM1 9 0
16 LAMOST J030944.99+285507.5 WD* 03 09 44.99 +28 55 07.5           DA+M 3 0
17 GALEX J031648.8+234947 ** 03 16 48.8452475856 +23 49 47.294423796           D+M2 2 0
18 GALEX J032750.3+222619 ** 03 27 50.3410620984 +22 26 19.063629600           DA+M 4 0
19 SDSS J033225.27+074718.0 ** 03 32 25.2870472536 +07 47 18.222815220           D+M 1 0
20 LAMOST J034953.33+331656.5 WD* 03 49 53.33 +33 16 56.5           D+M5 2 0
21 GALEX J041642.4+321120 WD* 04 16 42.4521832704 +32 11 20.768480304           D 11 0
22 GALEX J041653.2+262418 ** 04 16 53.2847479948 +26 24 20.413740689   15.977 15.695 15.824   D+M5 9 0
23 2MASS J05154080+3542085 * 05 15 40.8044761752 +35 42 08.629205832           M2 1 0
24 LAMOST J052520.27+285256.2 ** 05 25 20.2757471400 +28 52 56.333093232           D+M3 1 0
25 G 96-42 ** 05 29 22.6086626723 +37 54 48.494356252   16.5   14.7   D+M3 11 0
26 LAMOST J053051.47+381059.5 ** 05 30 51.4790170176 +38 10 59.371445496           DA+M? 3 0
27 LAMOST J054105.04+280640.2 WD* 05 41 05.04 +28 06 40.2           D+M 1 0
28 LP 86-199 ** 05 46 54.6460335168 +56 52 00.462550584           D+M 4 0
29 SDSS J060518.84+350702.2 * 06 05 18.8586562152 +35 07 02.280349380       16.00   M2 2 0
30 GALEX J060519.1+350703 ** 06 05 19.1053326072 +35 07 03.927268992   16.5   15.1   DA+M 10 0
31 GALEX J063330.3+612325 ** 06 33 30.4942107072 +61 23 26.770235568           D+M3 3 0
32 LAMOST J063610.52+285816.7 ** 06 36 10.4976213216 +28 58 17.003230500           D+M3 1 0
33 LAMOST J063753.51+321752.6 WD* 06 37 53.496 +32 17 51.70   17.2   18.3   DA+M6 3 0
34 GALEX J064156.6+422333 ** 06 41 56.6556769296 +42 23 33.400756248           D+M3 3 0
35 LAMOST J070230.85+264225.3 ** 07 02 30.8587308672 +26 42 25.600208292           D+M3 2 0
36 GALEX J070323.4+304422 ** 07 03 23.4663758448 +30 44 22.042079628           D+M4 2 0
37 2MASS J07052557+2707422 WD* 07 05 25.5860935368 +27 07 41.929277736           DA1-2 8 0
38 GALEX J072231.2+295138 WD* 07 22 31.23 +29 51 38.1           DA+M 3 0
39 GALEX J073128.3+264354 ** 07 31 28.3204730688 +26 43 53.913152496           DA+M 4 0
40 GALEX J075239.8+253549 ** 07 52 39.8289342432 +25 35 50.031172788           DA+M 12 0
41 GALEX J075721.1+323054 WD* 07 57 21.0965056344 +32 30 54.296239284           DA+dMe 18 0
42 GALEX J075919.4+321948 WD* 07 59 19.4217759960 +32 19 48.491450328           DA+M 20 0
43 GALEX J080532.3+195718 ** 08 05 32.3524404792 +19 57 19.172821680           DA+M 9 0
44 GALEX J080846.6+182558 WD* 08 08 46.59840 +18 25 58.1628           DA+dMe 13 0
45 SBSS 0810+524 WD* 08 14 06.1589233320 +52 17 15.468051084   17.5       DA+dM 17 0
46 GALEX J081654.3+354231 WD* 08 16 54.3554214072 +35 42 30.603492180           DA+M 16 0
47 GALEX J081934.6+024802 ** 08 19 34.5982112232 +02 48 02.637888732           D+M3 3 0
48 SDSS J081959.21+060424.2 ** 08 19 59.2094468952 +06 04 24.194494344   20.0   18.9   DA+M 15 0
49 GALEX J082022.0+431411 WD* 08 20 22.0284888048 +43 14 11.129171964           DA+M 26 0
50 GALEX J083056.1+315942 WD* 08 30 56.1205970856 +31 59 41.936365284           DA+dMe 15 0
51 2MASS J08400640+1430256 ** 08 40 06.40920 +14 30 25.6788           D+M3 4 0
52 GALEX J091012.3+260008 ** 09 10 12.2507397384 +26 00 09.283791852           D+M3 1 0
53 SDSS J091400.19+300214.0 ** 09 14 00.2041570584 +30 02 14.202616848           D+M2 1 0
54 GALEX J091508.1+415558 WD* 09 15 08.1130768704 +41 55 58.370550492           DA 12 0
55 SDSS J091943.00+303824.0 ** 09 19 42.9745744368 +30 38 24.601677576           D+M3 2 0
56 SDSS J092047.94+284523.4 ** 09 20 47.9542275168 +28 45 23.769049572           D+M4 1 0
57 GALEX J092451.6-001736 ** 09 24 51.6362890885 -00 17 36.449063659           DA5+M: 19 0
58 GALEX J092452.4+002449 WD* 09 24 52.4057728488 +00 24 48.996111996           DA+dMe 29 0
59 GALEX J092951.9+121950 ** 09 29 51.9288423768 +12 19 50.020360428           D+M4 2 0
60 GALEX J093011.6+095320 WD* 09 30 11.64432 +09 53 19.5684           DA+M 4 0
61 GALEX J094700.6+181954 WD* 09 47 00.6262986648 +18 19 54.913869660           DA 7 0
62 UCAC4 548-048459 ** 09 49 12.766608 +19 27 53.74404   15.631 14.887 14.702   dM2+D 3 0
63 PG 0950+186 WD* 09 52 45.790104 +18 21 02.71800   15.83 15.42 14.96   DA2+dM 22 0
64 SDSS J095824.31-020024.4 ** 09 58 24.3202914456 -02 00 24.456735216           D+M2 2 0
65 GALEX J101442.3+272347 ** 10 14 42.2685831768 +27 23 48.585945120           D+M3 1 0
66 UCAC4 604-046745 * 10 15 00.3394521840 +30 40 56.588145780   16.99 16.04 15.81   M2 2 0
67 LAMOST J101616.82+310506.5 ** 10 16 16.8273374424 +31 05 06.662170968           DA+M 6 0
68 GALEX J101647.2-010906 WD* 10 16 47.2117603992 -01 09 07.236115920           DA+dMe 20 0
69 SDSS J101732.00-020527.7 ** 10 17 32.0016691344 -02 05 27.779570268           DA+M 2 0
70 GALEX J103355.8+373633 ** 10 33 55.8478272480 +37 36 33.577262748           DA+M 4 0
71 PB 384 ** 10 35 14.7941296368 +39 07 18.182692056   18.1   17.9   DA+dM 14 0
72 GD 123 ** 10 36 25.2556059000 +46 08 30.695862156   13.70 13.15     DA+M3 59 1
73 GALEX J104012.9+252600 WD* 10 40 13.0115021256 +25 25 59.959565364           DA+M 18 0
74 GALEX J104521.5+482823 ** 10 45 21.5908114200 +48 28 22.536659928           D+M3 2 0
75 PG 1049+103 ** 10 52 27.74736 +10 03 38.1528   15.83 15.81 15.3   DA3+dM 31 0
76 GALEX J105405.2+283917 ** 10 54 05.2425007056 +28 39 16.891729956           DA+M 11 0
77 SBSS 1051+516 ** 10 54 21.9789475872 +51 22 54.243493356   17.0       DA+dMe 24 0
78 [CCH91] 1057.4+0100 ** 10 59 59.4704478504 +00 44 07.548146268     18.9     DA+M 4 0
79 SDSS J110827.44+303031.2 ** 11 08 27.4444263360 +30 30 31.293554364           D+M2 4 0
80 LAMOST J111035.16+280733.2 ** 11 10 35.1554601504 +28 07 33.287017512           DA+M 5 0
81 US 2386 ** 11 25 12.3049162440 +29 05 45.345692328   18.8       DA+M 12 0
82 GALEX J112636.8+145829 WD* 11 26 36.7677593736 +14 58 29.863279920           DA+M 14 0
83 GALEX J113102.8+522645 ** 11 31 02.8103825160 +52 26 45.169682388           D+M3 2 0
84 SBSS 1144+599 ** 11 47 32.2414921632 +59 39 21.408827112   17   16.3   DA2:+M 12 0
85 GALEX J114732.4+591735 ** 11 47 32.4146661312 +59 17 34.183736088           D+M2 2 0
86 GALEX J115026.2+302359 WD* 11 50 26.28 +30 23 59.4           D+M 3 0
87 SDSS J115345.52+282324.5 ** 11 53 45.5489592744 +28 23 24.589129128           D+M3 1 0
88 SDSS J120537.14+525715.0 PM* 12 05 37.1508246936 +52 57 15.128632116   16.00 15.01 14.77   M2 5 0
89 GALEX J122037.1+492334 ** 12 20 37.0783537704 +49 23 34.210521924           DA+dMe 13 0
90 GALEX J122149.0+285629 WD* 12 21 49.0907577960 +28 56 28.174736904           DA+M 11 0
91 GALEX J122206.7+294321 ** 12 22 06.7982640288 +29 43 21.930732660           D+M3 3 0
92 GALEX J122325.5+281144 ** 12 23 25.4802036048 +28 11 43.602345852           DA+M 10 0
93 GALEX J122514.9+292523 ** 12 25 14.8909689552 +29 25 23.259977220           DA+M 10 0
94 GALEX J123236.9+502310 ** 12 32 36.9685360536 +50 23 09.916308060           D+M2 2 0
95 GALEX J124054.7+434042 ** 12 40 54.8154899736 +43 40 43.512408048           DA+M 17 0
96 GALEX J124544.1+541015 ** 12 45 44.2435679568 +54 10 15.027867624           D+M3 2 0
97 SDSS J124649.67+274000.3 ** 12 46 49.6910753304 +27 40 01.064278632           D+M4 1 0
98 SDSS J124744.02+273352.9 ** 12 47 44.0222867760 +27 33 52.726235616           D+M3 3 0
99 SDSS J124919.22+280459.1 ** 12 49 19.2241003800 +28 04 58.993480200           DA+M4 7 0
100 LBQS 1309+0036 ** 13 12 08.1174859536 +00 20 57.945709680           DA+M4 13 0
101 PB 135 ** 13 16 06.9308944992 +46 43 59.402098776   17.5       DA+M 4 0
102 UCAC4 591-051550 ** 13 24 17.823192 +28 07 54.93900           DA+M 5 0
103 GALEX J132830.9+125940 WD* 13 28 30.9352062624 +12 59 41.397824868           DA+M4 22 0
104 SDSS J132901.28+600204.1 ** 13 29 01.2883381080 +60 02 04.061186160           D+M 1 0
105 PB 3960 WD* 13 31 46.4322961488 +18 32 25.340014896           DA 8 0
106 GALEX J133613.0+124613 WD* 13 36 13.0809301344 +12 46 13.368557280           DA+M5 13 0
107 GALEX J133722.7+202855 ** 13 37 22.7435663496 +20 28 54.817906224           DA+M 8 0
108 GALEX J134721.8+270725 WD* 13 47 21.80448 +27 07 24.9312   17.4       DA+M1 11 0
109 GALEX J135635.3+084841 ** 13 56 35.3661465600 +08 48 41.263177248           D+M 4 0
110 2MASS J14003598+5401041 ** 14 00 35.9872226160 +54 01 03.912718440   17.4   17.1   D+M5 4 0
111 SDSS J141625.48+311605.2 ** 14 16 25.4949933312 +31 16 05.338748388           D+M3 3 0
112 SDSS J143547.87+373338.5 WD* 14 35 47.8735199952 +37 33 38.699663868           DA+M4.5 45 0
113 UCAC4 641-051028 ** 14 55 12.613488 +38 10 34.20804   15.93 15.03 14.74   D+M3 6 0
114 CBS 318 WD* 15 24 25.2151600800 +50 40 09.848642160   17       DA+dMe 31 0
115 2MASS J15342174+3915505 PM* 15 34 21.7561207440 +39 15 50.565004632           dM4 12 0
116 GALEX J153421.9+391550 WD* 15 34 21.80237 +39 15 50.4930           DA 13 0
117 GALEX J154846.0+405728 WD* 15 48 46.0071409320 +40 57 28.797200712           DA+M6 34 0
118 LAMOST J162617.40+384029.9 ** 16 26 17.500800 +38 40 29.38224   16.87 16.21 15.42   D+M4 4 0
119 CRTS J164933.2+141255 ** 16 49 33.2589226848 +14 12 54.863946828     15.24     DA+M 4 0
120 GALEX J170458.6+543213 WD* 17 04 58.68 +54 32 11.5           D+M2 2 0
121 GALEX J214224.9+055510 ** 21 42 25.0724280528 +05 55 10.417099296           D+M3 2 0
122 GALEX J221102.5-002432 ** 22 11 02.5592310552 -00 24 33.654240648           DA+M 4 0
123 PHL 310 ** 22 32 57.1411588248 +01 41 14.938830708     18.6     DA+M 6 0
124 GALEX J223348.1+025012 ** 22 33 48.0841532565 +02 50 12.113982676           DA+M 3 0
125 KUV 23176+2650 ** 23 20 04.0229573208 +27 06 23.731906248   16.4 16.3     DA+M 28 0

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