2003A&A...410..951P

Query : 2003A&A...410..951P

2003A&A...410..951P - Astronomy and Astrophysics, volume 410, 951-959 (2003/11-2)

XMM-Newton study of the Serpens star-forming region.

PREIBISCH T.

Abstract (from CDS):

We analyze a XMM-Newton X-ray observation of the Serpens dark cloud with a total MOS-equivalent exposure time of 57ksec. We find 45 individual X-ray sources. None of the class 0 protostars, only one of the class I protostars, and two of the flat-spectrum objects in the region are detected in X-rays. The optically invisible flat-spectrum source EC 95, a very young intermediate mass object, is the strongest X-ray source in the Serpens cloud. The analysis of its X-ray spectrum shows that the hydrogen column density towards EC 95 is considerably lower than expected from the extinction determined from near-IR spectroscopy and photometry. Possible reasons for this inconsistency are discussed.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: individual: Serpens dark cloud - stars: formation - stars: coronae - stars: low-mass, brown dwarfs - stars: pre-main sequence - X-rays: stars

Nomenclature: Table 1: [P2003] JHHMMSS.s+DDMMSS N=45.

CDS comments: Table 1 : STGM 8 = STGM 182735.3+010959.

Simbad objects: 64

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Number of rows : 64
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 1333 OpC 03 29 11.3 +31 18 36           ~ 1450 1
2 IC 348 OpC 03 44 31.7 +32 09 32           ~ 1392 1
3 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 862 0
4 OMC 3 MoC 05 35 20.0 -05 01 00           ~ 273 1
5 HH 2 HH 05 36.4 -06 47           ~ 341 1
6 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3629 1
7 2MASS J18290445+0109470 Y*O 18 29 04.4632315200 +01 09 46.859736636           ~ 3 0
8 2MASS J18292049+0108551 Y*O 18 29 20.4889366992 +01 08 55.006051704           K4-K5 4 0
9 ATO J277.3446+01.1757 Y*O 18 29 22.7208806640 +01 10 32.911664592   18.0   15.1   K7.5 10 0
10 [P2003] J182926.5+011802 X 18 29 26.53 +01 18 03.3           ~ 2 0
11 2MASS J18293119+0105515 Y*O 18 29 31.1962681512 +01 05 51.318860748           M3e 3 0
12 NAME HH 106-107 ? 18 29 31.3 +01 18 40           ~ 6 0
13 [SVS76] Ser 14 Y*O 18 29 33.0704323752 +01 17 16.480512312   17.9   15.0   G2.5 15 0
14 2MASS J18293358+0106599 Y*O 18 29 33.5857426536 +01 06 59.964411168           M2-M4e 3 0
15 2MASS J18293445+0106068 Y*O 18 29 34.4539222440 +01 06 06.778014804           ~ 4 0
16 2MASS J18293474+0105288 Y*O 18 29 34.7479971696 +01 05 28.787517672           K7-K8e 4 0
17 [P2003] J182935.1+012338 X 18 29 35.14 +01 23 39.0           ~ 3 0
18 HH 460 HH 18 29 38.6 +01 18 24           ~ 11 1
19 [P2003] J182939.7+011754 X 18 29 39.7 +01 17 54           ~ 2 0
20 ATO J277.4228+01.1271 Y*O 18 29 41.4745809408 +01 07 37.875767772           K2.5 19 0
21 2MASS J18294723+0122346 Y*O 18 29 47.2327549368 +01 22 34.636921428   19.8   16.0   M2.5 8 0
22 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1100 2
23 V* V371 Ser Or* 18 29 51.21240 +01 16 39.4860           ~ 119 1
24 2MASS J18295317+0112275 BD* 18 29 53.176 +01 12 27.55           L 16 0
25 2MASS J18295360+0117017 Y*O 18 29 53.6099956536 +01 17 01.730202216   19.7   16.6   M2.0 21 0
26 2MASS J18295536+0110340 Y*O 18 29 55.3611830520 +01 10 34.044079044           M5.0 8 0
27 [P2003] J182955.7+010024 X 18 29 55.7 +01 00 24           ~ 1 0
28 2MASS J18295571+0114315 Y*O 18 29 55.711 +01 14 31.50           ~ 39 0
29 [HCP2006] Cluster A Cld 18 29 56 +01 14.8           ~ 48 0
30 2MASS J18295618+0110574 Y*O 18 29 56.1832123056 +01 10 57.457509132           K5.0 9 0
31 2MASS J18295667+0112393 Y*O 18 29 56.674 +01 12 39.32           ~ 20 0
32 2MASS J18295741+0114503 Y*O 18 29 57.4127920080 +01 14 50.197813116           M2.0 17 0
33 HD 170545B Y*O 18 29 57.5757576552 +01 10 47.048389284   9.82 9.58     A1-A8V-IIIe 10 0
34 2MASS J18295760+0113004 Y*O 18 29 57.602 +01 13 00.42           ~ 36 3
35 HD 170545 ** 18 29 57.66 +01 10 53.6           B9V 17 0
36 HD 170545A Y*O 18 29 57.6615650088 +01 10 53.561414136   8.617 8.470 8.96   A1-A3Ve 17 0
37 IRAS 18274+0112 Y*O 18 29 57.73680 +01 14 05.6940           M4: 139 2
38 2MASS J18295781+0115318 Y*O 18 29 57.816 +01 15 31.86           K2.0 22 0
39 2MASS J18295785+0112514 Y*O 18 29 57.858 +01 12 51.40           ~ 60 3
40 2MASS J18295820+0115216 Y*O 18 29 58.2037073472 +01 15 21.610474308           K7.0 40 0
41 2MASS J18295830+0120270 Y*O 18 29 58.3024268856 +01 20 26.906751060           ~ 4 0
42 GCNM 114 * 18 29 58.8 +01 13 04           ~ 5 0
43 CK 8 TT* 18 29 59.2453548960 +01 14 07.611180936   19.7   16.9   K7.5 31 0
44 NAME SERPENS SMM 3 Y*O 18 29 59.28 +01 14 01.7           ~ 101 1
45 HH 455 HH 18 30 +01.3           ~ 5 1
46 2MASS J18300065+0113402 Y*O 18 30 00.6502197504 +01 13 40.174218912           M0.5 27 0
47 2MASS J18300124+0115036 Y*O 18 30 01.245 +01 15 03.61           ~ 10 0
48 2MASS J18300341+0116191 Y*O 18 30 03.4139489400 +01 16 19.094575296   18.9   15.0   M0.0 44 0
49 [GFM2007] 70 X 18 30 04.62 +01 22 34.1           ~ 6 0
50 2MASS J18300610+0106170 Y*O 18 30 06.1030207776 +01 06 16.939699380   19.0   16.5   M1.0 14 0
51 [P2003] J183006.3+010104 X 18 30 06.3 +01 01 04           ~ 1 0
52 [P2003] J183006.7+011216 X 18 30 06.78 +01 12 10.0           ~ 3 0
53 2MASS J18300770+0112043 Y*O 18 30 07.708 +01 12 04.32           M2.5 16 0
54 2MASS J18300820+0105510 Y*O 18 30 08.2020124512 +01 05 51.011216592           M4-M5e 4 0
55 SSTc2d J183009.9+012440 X 18 30 09.86 +01 24 39.8           ~ 2 0
56 2MASS J18301818+0114167 Y*O 18 30 18.1870131528 +01 14 16.733300676           M0.0 16 0
57 2MASS J18302190+0121076 Y*O 18 30 21.90984 +01 21 07.6500           M2-M4e 3 0
58 2MASS J18302240+0120439 Y*O 18 30 22.4033066856 +01 20 43.873119204           M1.0 13 0
59 2MASS J18302343+0105045 Y*O 18 30 23.4360938784 +01 05 04.534833660           M4.5 13 0
60 [P2003] J183025.9+010928 X 18 30 26.13 +01 09 25.7           ~ 2 0
61 ATO J277.6472+01.0993 Y*O 18 30 35.3330802744 +01 05 57.593826348           K6-K7e 5 0
62 2MASS J18303742+0117581 Y*O 18 30 37.4237916912 +01 17 58.156944864           K0 4 0
63 2MASS J18303955+0118029 Y*O 18 30 39.5575608768 +01 18 02.967824592           K4-K5 4 0
64 [P2003] J183040.2+011020 X 18 30 40.22 +01 10 14.9           ~ 2 0

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