2003ApJ...590..348L

Query : 2003ApJ...590..348L

2003ApJ...590..348L - Astrophys. J., 590, 348-356 (2003/June-2)

New low-mass members of the Taurus star-forming region.

LUHMAN K.L., BRICENO C., STAUFFER J.R., HARTMANN L., BARRADO Y NAVASCUES D. and CALDWELL N.

Abstract (from CDS):

Briceño et al. recently used optical imaging, data from the Two-Micron All-Sky Survey (2MASS), and follow-up spectroscopy to search for young low-mass stars and brown dwarfs in 8 deg² of the Taurus star-forming region. By the end of that study, there remained candidate members of Taurus that lacked the spectroscopic observations needed to measure spectral types and determine membership. In this work, we have obtained spectroscopy of the 22 candidates that have A_V≤8, from which we find six new Taurus members with spectral types of M2.75 through M9. The new M9 source has the second latest spectral type of the known members of Taurus (∼0.02 M_☉). Its spectrum contains extremely strong emission in Hα (W_λ∼950 Å), as well as emission in He I 6678 Å and the Ca II IR triplet. This is the least massive object known to exhibit emission in He I and Ca II, which together with the strong Hα are suggestive of intense accretion.

Abstract Copyright: ∼

Journal keyword(s): Infrared: Stars - Stars: Evolution - Stars: Formation - Stars: Low-Mass, Brown Dwarfs - Stars: Luminosity Function, Mass Function - Stars: Pre-Main-Sequence

Nomenclature: Table 2: [BLH2002] KPNO-Tau NN (Nos 10-15) added.

Simbad objects: 32

Full paper

View the references in ADS

Number of rows : 32

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2023	#notes
1	2MASSW J0149090+295613	LM*	01 49 09.0028348631	+29 56 12.511555579					M9.5V	53	0
2	IC 348	OpC	03 44 32	+32 09.5					~	1343	1
3	2MASS J04131796+2811430	*	04 13 17.9725650432	+28 11 42.942428736					~	3	0
4	[BLH2002] KPNO-Tau 10	Y*O	04 17 49.5567002040	+28 13 31.770031152			17.8		M5Ve	43	0
5	2MASSs J0417519+282551	*	04 17 51.94	+28 25 51.1					~	1	0
6	2MASS J04180215+2817487	LM*	04 18 02.16	+28 17 48.8					M5Ve	3	0
7	2MASSs J0418053+282801	*	04 18 05.38	+28 28 01.3					~	1	0
8	[BLH2002] KPNO-Tau 11	TT*	04 18 30.3020636616	+27 43 20.654543028					M5.5Ve	38	0
9	2MASSs J0418423+281140	*	04 18 42.38	+28 11 40.7					~	2	0
10	[BLH2002] KPNO-Tau 12	Y*O	04 19 01.2829227024	+28 02 48.139594656			23.228		M9Ve	53	0
11	2MASSs J0419273+281301	*	04 19 27.37	+28 13 01.1					~	1	0
12	2MASSs J0426255+260653	*	04 26 25.50	+26 06 53.4					~	1	0
13	2MASSs J0426344+260740	*	04 26 34.45	+26 07 40.2					~	1	0
14	[BLH2002] KPNO-Tau 13	TT*	04 26 57.3158364072	+26 06 28.338050124					M5Ve	43	0
15	2MASS J04274283+2622567	LP?	04 27 42.8383708717	+26 22 56.703009193					~	1	0
16	UCAC4 582-012385	*	04 32 11.3156706000	+26 13 23.680164144					~	3	0
17	UCAC4 583-012420	*	04 32 13.8082587432	+26 30 46.282508712				14.42	~	3	0
18	[RRN96] GG Tau B	Y*?	04 32 30.2766917736	+17 31 30.449809020					M6	48	1
19	V* GG Tau	Or*	04 32 30.3506925552	+17 31 40.494063144	14.84	14.78	13.40	11.54	M0e+M2.0e	714	1
20	[BLH2002] KPNO-Tau 14	Y*O	04 33 07.8086038248	+26 16 06.561538896			20.735		M6Ve	37	0
21	2MASS J04330802+2556436	*	04 33 08.0167160280	+25 56 43.783756188					~	3	0
22	2MASS J04332932+2618096	*	04 33 29.3263196880	+26 18 09.632257236					~	3	0
23	2MASSs J0433341+181426	*	04 33 34.11	+18 14 26.2					~	1	0
24	2MASSs J0433513+262614	*	04 33 51.33	+26 26 14.3					~	1	0
25	2MASS J04352837+2410004	*	04 35 28.38	+24 10 00.5					~	2	0
26	[BLH2002] KPNO-Tau 15	Y*O	04 35 51.0972056136	+22 52 40.063560924	19.75				M3Ve	31	0
27	2MASSs J0436008+225517	*	04 36 00.85	+22 55 17.4					M7V	1	0
28	NAME Taurus Complex	SFR	04 41.0	+25 52					~	4139	0
29	NAME Garrison 1	OpC	05 38 42	-02 36.0					~	545	0
30	UGCS J053900.29-023705.7	Y*?	05 39 00.29712	-02 37 05.7648					M8	23	0
31	2MASS J19013357-3700304	Y*O	19 01 33.5761986624	-37 00 30.453110028					M6.5	45	0
32	NAME Corona Australis Cloud	MoC	19 01 51	-36 58.9					~	460	0

To bookmark this query, right click on this link: simbad:objects in 2003ApJ...590..348L and select 'bookmark this link' or equivalent in the popup menu