2003ApJ...584L..95L

Query : 2003ApJ...584L..95L

2003ApJ...584L..95L - Astrophys. J., 584, L95-L98 (2003/February-3)

The discovery of two nearby carbon dwarfs.

LOWRANCE P.J., KIRKPATRICK J.D., REID I.N., CRUZ K.L. and LIEBERT J.

Abstract (from CDS):

The comparison of optical and Two Micron All Sky Survey near-infrared photometry for large samples of cataloged proper-motion stars has given us the potential to discover previously unrecognized nearby objects of rare type. In this Letter we present the discovery of two new carbon dwarfs, LSR 2105+2514 and LP 758-43, which were drawn from proper-motion lists and which lie in a sparsely populated part of optical/near-IR color-color space. Their optical spectra, exhibiting absorptions by C2and/or CN, are discussed. LSR 2105+2514 is believed to lie within 200 pc and would have MKs≥6.7, making it lower in luminosity than any carbon dwarf with a measured trigonometric parallax. LP 758-43, which is not as red but still probably cooler than the best studied carbon dwarfs, is believed to lie within 360 pc. Using our optical/near-infrared selection technique on published lists of proper-motion stars, we hope in the near future to expand further the current sample of carbon dwarfs, which numbers only 31 objects at this writing.

Abstract Copyright: ∼

Journal keyword(s): Stars: Atmospheres - Stars: Carbon - Techniques: Photometric

Simbad objects: 31

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Number of rows : 31
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 LP 765-18 Pe* 00 26 00.4905652338 -19 18 52.282367952   16.50 15.00     dC 26 0
2 SDSS J003937.34+152910.6 Pe* 00 39 37.3472016192 +15 29 10.580183520           dC 6 0
3 [WIE93] 0041-295 C* 00 43 34.9823297472 -29 18 07.648826040   20.4 19.1     C4,2_J4/5 4 0
4 [WIE93] 0045-259 Pe* 00 48 17.6533076952 -25 38 37.985489736   20.9 19.5     dC1,1J5 4 0
5 LP 587-45 Pe* 01 21 50.3021978376 +01 13 02.530429752   18.5   16.2   dC 11 0
6 SDSS J012526.80+000448.5 Pe* 01 25 26.7443087760 +00 04 48.558363204   21.52 20.15     dC 8 0
7 SDSS J025634.60-084854.0 WD* 02 56 34.6229442984 -08 48 53.695343808           DQ 6 0
8 G 77-61 Pe* 03 32 38.0920129269 +01 58 00.084645962   15.60 13.90 12.9   dC-J_CH5 139 0
9 2MASSI J0736213+390725 Pe* 07 36 21.3054543456 +39 07 25.226171868           dC 7 0
10 SDSS J082251.42+461232.3 Pe* 08 22 51.4224314304 +46 12 32.287039128           dC 7 0
11 2MASS J08262674+4709117 WD* 08 26 26.7420617832 +47 09 11.781088668           DQ 8 0
12 PG 0824+289 ** 08 27 05.0512752687 +28 44 02.778910836   14.391 14.204 14.454   DA+dC 71 0
13 2MASS J08585328+0122435 Pe* 08 58 53.2806736944 +01 22 43.451196168           dCe 8 0
14 SDSS J090011.34-003606.8 Pe* 09 00 11.3481187704 -00 36 06.467862060           dC 6 0
15 SDSS J094858.68+583020.5 Pe* 09 48 58.6743431808 +58 30 20.563973172           dC 7 0
16 SDSS J100432.50+004338.0 Pe* 10 04 32.4508680432 +00 43 37.625213424           dC 6 0
17 CLS 29 Pe* 10 40 06.3718957968 +35 48 02.378242116     15.0     Ce-CH 12 0
18 CLS 31 Pe* 10 54 29.3996427504 +34 02 25.581370704     16.5     dC 14 0
19 NAME KA 2 Pe* 11 19 03.9051903288 -16 44 49.276940712   17.071 15.538 15.327 14.097 dC0,1_CH? 14 0
20 SDSS J112950.36+003344.7 Pe* 11 29 50.3785829472 +00 33 44.896456836   20.03 18.91     dC 7 0
21 SDSS J114731.69+003724.4 WD* 11 47 31.6878098640 +00 37 24.377178792           DQ 7 0
22 CLS 50 C* 12 20 00.7542226560 +36 48 01.624366692     16.0     C 15 0
23 2MASSI J1353330-004039 Pe* 13 53 33.0064122408 -00 40 39.409425552           dC 8 0
24 2MASS J14211242-0048226 C* 14 21 12.4221929592 -00 48 22.471041492           C 5 0
25 SBSS 1517+502 ** 15 19 05.9757917760 +50 07 02.861348808           DA+dCe 48 0
26 2MASS J15373218+0043430 WD* 15 37 32.1935782848 +00 43 42.956965272           DQ 8 0
27 LP 328-57 Pe* 15 52 37.3470983376 +29 27 59.269249512   17.1   15.2   dC 26 0
28 [WIE93] 2048-348 C* 20 52 02.6394489912 -34 37 31.616184396   21.3 19.7     C5,2 5 0
29 LSPM J2105+2514 Pe* 21 05 16.5621088491 +25 14 48.046888176   18.4   16.1   dC 8 0
30 LP 758-43 Pe* 21 49 37.8725743032 -11 38 28.356535752     15.97     dC 6 0
31 2MASS J23025499+0059042 Pe* 23 02 54.9956797560 +00 59 04.308372312           dC 8 0

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