J/other/ApSS/366.92 Stars in Alessi-Teutsch 9 (ASCC 10) (Sanchez+, 2021)
Study of the open cluster Alessi-Teutsch 9 (ASCC 10) using multiband
photometry and Gaia EDR3.
Sanchez N, Lopez-Martinez F, Ocando S, Blay P.
<Astrophys. Space Sci. 366, 92 (2021)>
=2021Ap&SS.366...92S 2021Ap&SS.366...92S (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Photometry ; Proper motions ;
Effective temperatures ; Stars, masses; Optical
Keywords: methods: data analysis -
open clusters and associations: general -
Open clusters and associations: individual: Alessi-Teutsch 9
Abstract:
There is a growing interest in the automated characterization of open
clusters using data from the Gaia mission. This work evidences the
importance of choosing an appropriate sampling radius (the radius of
the circular region around the cluster used to extract the data) and
the usefulness of additional multiband photometry in order to achieve
accurate results. We address this issue using as a case study the
cluster Alessi-Teutsch 9. The optimal sampling is determined by
counting the number of assigned members at different sampling radii.
By using this strategy with data from Gaia EDR3 and with observed
photometry in 12 bands spanning the optical range from 3000 to
10000Å, approximately, we are able to obtain reliable members and
to determine the properties of the cluster. The spatial distribution
of stars show a two-component structure with a central core of radius
12-13 arcmin and an outer halo extending out to 35 arcmin. With the
derived cluster distance (654pc) we obtain that the number density of
stars 0.06star/pc3, making Alessi-Teutsch 9 one of the less dense
known open clusters. The short relaxation time reveals that it is a
dynamically relaxed and gravitationally bound system.
Description:
We study the open cluster Alessi-Teutsch 9 (ASCC 10) using data from
Gaia EDR3 and additional multiband photometry in 12 bands spanning the
optical range from 3000 to 10000Å. We obtain a total of 55 reliable
members that allow us to determine the accurate properties for this
cluster. This table contains the list of members and their derived
properties.
Objects:
------------------------------------------------------
RA (2000) DE Designation(s)
------------------------------------------------------
03 27 29 +34 58.9 Alessi-Teutsch 9 = [KPR2005] 10
------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table.dat 153 55 Data for stars in Alessi-Teutsch 9 (ASCC 10)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 F16.13 deg RAdeg Right ascension (J2000)
18- 33 F16.13 deg DEdeg Declination (J2000)
35- 40 F6.3 mas/yr pmRA Proper motion in right ascension, pmRA*cosDE
42- 46 F5.3 mas/yr e_pmRA Error of pmRA
48- 53 F6.3 mas/yr pmDE Proper motion in declination
55- 59 F5.3 mas/yr e_pmDE Error of pmDE
61- 66 F6.4 mas Plx Parallax
68- 73 F6.4 mas e_Plx Error of Plx
75- 83 F9.6 mag Gmag G magnitude from Gaia
85- 92 F8.6 mag e_Gmag Error of Gmag
94-101 F8.6 mag BP-RP BP-RP color from Gaia
103-106 F4.2 mag Av Visual extinction
108-114 F7.1 K Teff Effective temperature
116-120 F5.1 K e_Teff Error of Teff
122-128 F7.3 Lsun Lbol Bolometric luminosity
130-135 F6.3 Lsun e_Lbol Error of Lbol
137-141 F5.3 Msun Mass Mass
143-147 F5.3 Msun e_Mass Error of M
149-153 F5.3 Rsun Rad Radius
--------------------------------------------------------------------------------
Acknowledgements:
Nestor Sanchez, nestor.sanchezd(at)campusviu.es
(End) N. Sanchez [Univ. Int. Valencia, Spain], P. Vannier [CDS] 18-Jan-2022