2005AJ....130.2212T


Query : 2005AJ....130.2212T

2005AJ....130.2212T - Astron. J., 130, 2212-2219 (2005/November-0)

X-ray and near-infrared studies of the star-forming cloud L1448.

TSUJIMOTO M., KOBAYASHI N. and TSUBOI Y.

Abstract (from CDS):

We present the results of X-ray and near-infrared (NIR) observations of L1448, a star-forming region in the Perseus cloud complex using the Chandra X-Ray Observatory and the 4 m telescope at the Kitt Peak National Observatory. We detect 72 X-ray sources in a ∼17'x17' region with a ∼68 ks ACIS exposure down to the X-ray flux limit of ∼10–15 ergs/s/cm2 (0.5-8 keV), for which we conduct follow-up NIR imaging observations in a concentric ∼11'x11' region with FLAMINGOS down to mKs∼17 mag. Twelve X-ray sources have NIR or optical counterparts. By plotting X-ray mean energy versus the NIR-to-X-ray flux ratio, the X-ray sources are clearly separated into two groups. The X-ray spectral and temporal features, as well as NIR magnitudes and colors, indicate that one group mainly consists of young stellar objects (YSOs) in the cloud and the other of background extragalactic sources. Ten X-ray-emitting YSO candidates are thus newly identified as low-mass or brown dwarf mass sources from their NIR magnitudes. In addition, a possible X-ray signal is found from a midinfrared protostar, L1448 IRS 3(A). The lack of detection of this source in our deep NIR images indicates that this source has a very steep spectral slope of ≳3.2 in the 2-10 µm wavelength range.

Abstract Copyright:

Journal keyword(s): Infrared: Stars - stars: individual (L1448) - Stars: Pre-Main-Sequence - X-Rays: Stars

VizieR on-line data: <Available at CDS (J/AJ/130/2212): table1.dat table3.dat>

Nomenclature: Table 1: [TKT2005] X NN (Nos 1-72). Table 3: [TKT2005] NIR NNN (Nos 1-294).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

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 - 2021
#notes
1 LDN 1448 DNe 03 22.5 +30 35           ~ 490 0
2 2MASS J03250943+3046215 Y*O 03 25 09.430 +30 46 21.58     19.5     ~ 90 0
3 IRAS 03222+3034 Y*O 03 25 22.32 +30 45 13.9           ~ 131 0
4 LDN 1448NA smm 03 25 36.49 +30 45 22.2           ~ 178 1
5 IRAS 03225+3034 IR 03 25 36.49 +30 45 22.2           ~ 154 1
6 SSTc2d J032536.4+304522 Y*O 03 25 36.49 +30 45 22.2           ~ 190 1
7 IRAS F03226+3033 Y*O 03 25 38.83 +30 44 06.2           ~ 319 0
8 [SDA2014] West4 Y*O 03 25 38.83 +30 44 06.2           ~ 245 1
9 IRAS 03256+3055 Y*O 03 28 45.306 +31 05 42.05           ~ 49 3
10 IRAS 03258+3104 Y*O 03 28 55.30 +31 14 27.8           ~ 160 1
11 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 421 3
12 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 641 1
13 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 473 0
14 NGC 1333 OpC 03 29 11 +31 18.6           ~ 1282 1
15 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 574 0
16 IRAS 03282+3035 cor 03 31 20.98 +30 45 30.1           ~ 164 0
17 Barnard 1 MoC 03 33 16.3 +31 07 51           ~ 284 0
18 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1155 0
19 IC 348 OpC 03 44 34 +32 09.8           ~ 1265 1
20 [TKT2002] S6 X 05 36 02.99 -04 57 36.2           ~ 2 0
21 [MCK88] NGC 2024 FIR 4 Y*O 05 41 44.00 -01 54 42.0           ~ 55 0
22 NAME HH 25MMS Y*O 05 46 07.8 -00 13 41           ~ 56 0
23 LMZ 3 IR 05 46 08.8 -00 10 47           ~ 85 0
24 NAME VLA 1623-243 Y*O 16 26 26.42 -24 24 30.0           ~ 389 0
25 [SSG2006] MMS002 smm 16 26 26.50 -24 24 30.9           ~ 241 0
26 WL 22 TT* 16 26 59.16720 -24 34 58.8072           ~ 64 0
27 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3219 1
28 V* R CrA Ae* 19 01 53.6850227874 -36 57 08.145519972 12.781 12.651 11.917 11.242 10.412 B5IIIpe 459 1
29 NAME Cep E HII 23 03 12.779 +61 42 25.75           ~ 160 0

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2021.09.28-08:30:45

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