2014MNRAS.445.3908L


Query : 2014MNRAS.445.3908L

2014MNRAS.445.3908L - Mon. Not. R. Astron. Soc., 445, 3908-3918 (2014/December-3)

Spectroscopy of Hyades L dwarf candidates.

LODIEU N., BOUDREAULT S. and BEJAR V.J.S.

Abstract (from CDS):

We present the results of photometric, astrometric, and spectroscopic follow-up of L dwarf candidates identified in the Hyades cluster by Hogan et al. We obtained low-resolution optical spectroscopy with the Optical System for Imaging and low-intermediate Resolution Integrated Spectroscopy spectrograph on the Gran Telescopio de Canarias for all 12 L dwarf candidates as well as new J-band imaging for a subsample of 8 to confirm their proper motion. We also present mid-infrared photometry from the Wide Field Infrared Survey Explorer for the Hyades L and T dwarf candidates and estimate their spectroscopic distances, effective temperatures, and masses. We confirm the cool nature of several L dwarf candidates and confirm astrometrically their membership, bridging the gap between the coolest M dwarfs and the two T dwarfs previously reported in the Hyades cluster. These members represent valuable spectral templates at an age of 625 Myr and slightly supersolar metallicity (Fe/H = +0.13). We update the Hyades mass function across the hydrogen-burning limit and in the substellar regime. We confirm a small number numbers of very low mass members below ∼ 0.1 M belonging to the Hyades cluster.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): techniques: photometric - techniques: spectroscopic - astronomical data bases: catalogues - brown dwarfs - Infrared: stars

CDS comments: The nomenclature used in tables 1 and 2 is confusing. Objects named "Hya01" to "Hya12" come from 2008MNRAS.388..495H and are in SIMBAD with their 2MASS identifier. Objects named "Hya20" and "Hya21" come from 2008A&A...481..661B and are Cl* Melotte 25 CFHT 20 and 21.

Simbad objects: 29

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Number of rows : 29
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 2MASSW J0030438+313932 BD* 00 30 43.8403218072 +31 39 32.036613732           L2V 16 0
2 2MASS J02512220+2521236 LM* 02 51 22.2202448808 +25 21 23.558424192           M9V 8 0
3 Cl Melotte 20 OpC 03 26 28 +48 58.5           ~ 802 0
4 IC 348 OpC 03 44 32 +32 09.5           ~ 1321 1
5 Cl* Melotte 22 KPNO 2 BD* 03 45 43.1616128256 +25 40 23.239779672         17.36 L0V 119 0
6 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3227 0
7 2MASS J03524627+2112332 BD* 03 52 46.27488 +21 12 33.2964           L1.5 7 0
8 2MASS J03554191+2257016 BD* 03 55 41.91504 +22 57 01.6776           L3V 18 0
9 2MASS J03584293+1039396 BD* 03 58 42.93408 +10 39 39.6936           L3.0 4 0
10 2MASS J04102390+1459104 BD* 04 10 23.9122101672 +14 59 10.346509824           L0.5 10 0
11 2MASS J04173384+1430156 BD* 04 17 33.84624 +14 30 15.6816           L1.0 6 0
12 2MASS J04202441+2356134 LM* 04 20 24.4362372288 +23 56 13.118558136       20.6 18.4 M8.5 7 0
13 2MASS J04220512+1358474 LM* 04 22 05.1317334936 +13 58 47.303125212           M9.5 10 0
14 Cl* Melotte 25 CFHT 21 BD* 04 29 22.82736 +15 35 29.9292         22.16 T1 5 0
15 Cl Melotte 25 OpC 04 29 47 +16 56.9           ~ 2884 0
16 Cl* Melotte 25 CFHT 20 BD* 04 30 38.77272 +13 09 56.9772         21.58 T2 9 0
17 2MASS J04354290+1323449 BD* 04 35 42.90264 +13 23 44.9916           L3.5 7 0
18 2MASS J04392907+1957351 LM* 04 39 29.07552 +19 57 35.1180           M3 3 0
19 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4011 0
20 2MASS J04421852+1754378 LM* 04 42 18.5323137936 +17 54 37.794602376           M9.5 5 0
21 2MASS J04463535+1451261 BD* 04 46 35.35200 +14 51 26.1864           L2.0 7 0
22 2MASS J04584566+1212343 BD* 04 58 45.6712228512 +12 12 34.302175884           L0.5 8 0
23 BD+52 913 WD* 05 05 30.6180977592 +52 49 51.919301604 10.25 11.44 11.69 11.93 12.108 DA.8 1045 0
24 HD 289002 * 06 45 13.3725491952 +02 08 14.685250596 10.06 10.62 10.44     B1 241 0
25 NGC 2632 OpC 08 40 13 +19 37.3           ~ 1419 0
26 EPIC 251812062 BD* 08 45 10.66 +21 48 17.1           L0.3 6 0
27 LP 213-68 ** 10 47 13.7778721616 +40 26 49.263789176   21.2   19.1   M8+L0 33 0
28 2MASS J11550087+2307058 BD* 11 55 00.8851003272 +23 07 06.421018152           L4V 22 0
29 2MASS J16304999+0051010 BD* 16 30 50.00400 +00 51 01.3536           L2 8 0

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2022.09.26-23:55:54

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