ApJdataFrames Hernandez2014

Title: A SPECTROSCOPIC CENSUS IN YOUNG STELLAR REGIONS: THE σ ORIONIS CLUSTER
Authors: Jesus Hernandez, Nuria Calvet, Alice Perez, Cesar Briceno, Lorenzo Olguin, Maria E Contreras, Lee Hartmann, Lori E Allen, Catherine Espaillat, and Ramírez Hernan

Data is from this paper:
http://iopscience.iop.org/0004-637X/794/1/36/article


In [1]:
%pylab inline

import seaborn as sns
sns.set_context("notebook", font_scale=1.5)

import warnings
warnings.filterwarnings("ignore")


Populating the interactive namespace from numpy and matplotlib

In [2]:
from astropy.io import ascii

Table 4 - Low Resolution Analysis


In [3]:
tbl4 = ascii.read("http://iopscience.iop.org/0004-637X/794/1/36/suppdata/apj500669t4_mrt.txt")


Downloading http://iopscience.iop.org/0004-637X/794/1/36/suppdata/apj500669t4_mrt.txt [Done]

In [4]:
tbl4[0:4]


Out[4]:
<Table masked=True length=4>
Namef_Name2MASSInstf_InstSpTypee_SpTypeEWLiIf_EWLiIEWHaf_EWHaEWNaIe_EWNaIf_EWNaIAVKH95AVPM13
0.1 nm0.1 nm0.1 nm0.1 nmmagmag
string48string8string136string48string8string32float64float64int64float64string48float64float64string8float64float64
----05384476-0236001F--B0.01.50.003.1E_abs_------0.00.0
SO724--05384719-0235405S--B2.01.50.002.0E_abs_------0.00.0
----05384561-0235588F--B2.01.50.004.3E_abs_------0.10.0
----05402018-0226082F--B4.01.50.005.0E_abs_------0.170.0

In [5]:
Na_mask = ((tbl4["f_EWNaI"] == "Y") | (tbl4["f_EWNaI"] == "N"))
print "There are {} sources with Na I line detections out of {} sources in the catalog".format(Na_mask.sum(), len(tbl4))


There are 57 sources with Na I line detections out of 340 sources in the catalog

In [6]:
tbl4_late = tbl4[['Name', '2MASS', 'SpType', 'e_SpType','EWHa', 'f_EWHa', 'EWNaI', 'e_EWNaI', 'f_EWNaI']][Na_mask]

In [7]:
tbl4_late.pprint(max_lines=100, )


 Name        2MASS       SpType e_SpType  EWHa  f_EWHa EWNaI  e_EWNaI f_EWNaI
                                         0.1 nm        0.1 nm  0.1 nm        
------ ----------------- ------ -------- ------ ------ ------ ------- -------
 SO576  05383302-0239279   M2.0      1.5    0.0     --   2.37    0.22       N
 SO444  05381824-0248143   M3.0      0.5   -3.8   nAcr   0.83    0.08       Y
 SO220  05375220-0233379   M3.0      0.5   -3.9   nAcr   0.92    0.08       Y
SO1219  05394799-0240320   M3.0      0.5   -2.8   nAcr    0.9    0.07       Y
 SO804  05385543-0241297   M3.0      0.5    0.5   nAcr   1.96    0.09       N
 SO374  05380994-0251377   M3.0      0.5  -22.3    Acr   1.04    0.09       Y
 SO117  05373666-0234003   M3.0      0.5   -4.3   nAcr   1.06     0.1       Y
 SO525  05382774-0243009   M3.0      1.0   -5.8   nAcr   1.35    0.09       Y
  SO60  05372831-0224182   M3.0      1.0   -3.5   nAcr   1.37     0.1       Y
  SO27  05372306-0232465   M3.0      1.0   -4.4   nAcr   1.47    0.11       Y
 SO795  05385434-0240029   M3.0      1.0    0.0     --   2.48    0.19       N
 SO908  05390878-0231115   M3.0      1.0  -19.8    Acr   0.74     0.1       Y
 SO520  05382750-0235041   M3.5      0.5  -28.4    Acr   0.52    0.07       Y
 SO366  05380897-0220109   M3.5      0.5   -5.8   nAcr   1.18    0.11       Y
 SO426  05381610-0238049   M3.5      0.5   -5.3   nAcr   0.69    0.11       Y
 SO655  05383972-0240197   M3.5      0.5    2.7   nAcr   0.57    0.13       Y
 SO865  05390357-0246269   M3.5      1.0  -50.2    Acr   0.94    0.09       Y
 SO955  05391505-0218444   M3.5      1.0   -2.7   nAcr   1.21    0.11       Y
SO1071  05392883-0217513   M3.5      1.0  -14.4   Acr?   1.41    0.09       Y
SO1083  05393132-0248528   M3.5      1.0   -8.0   nAcr   1.33    0.13       Y
 SO514  05382684-0238460   M3.5      1.0    0.0     --   1.23    0.19       Y
 SO562  05383141-0236338   M3.5      1.5  -77.7    Acr   0.52     0.1       Y
SO1053  05392650-0252152   M4.0      0.5   -3.6   nAcr   1.02    0.09       Y
 SO967  05391582-0236507   M4.0      0.5   -5.5   nAcr   1.08    0.08       Y
 SO484  05382332-0244142   M4.0      0.5   -4.8   nAcr   1.15    0.08       Y
 SO940  05391346-0237391   M4.0      0.5   -0.5   nAcr   0.99    0.12       Y
 SO397  05381319-0226088   M4.0      1.0  -38.5    Acr   1.21     0.1       Y
 SO901  05390808-0228447   M4.0      1.0    2.7   nAcr   0.47     0.1       Y
 SO999  05392023-0238258   M4.0      1.0   -1.0   nAcr   0.81     0.1       Y
 SO490  05382358-0220475   M4.0      1.0 -138.7    Acr   0.99     0.1       Y
 SO462  05382050-0234089   M4.0      1.0  -22.0    Acr   0.43    0.06       Y
 SO723  05384718-0234368   M4.0      1.5  -77.8    Acr   0.61    0.13       Y
 SO465  05382088-0246132   M4.0      4.0    7.6   nAcr   0.48    0.13       Y
 SO740  05384828-0236409   M4.5      0.5   -5.2   nAcr   0.46    0.11       Y
 SO300  05380107-0245379   M4.5      0.5  -92.6    Acr   0.65     0.1       Y
 SO489  05382354-0241317   M4.5      0.5   -4.6   nAcr   1.13     0.1       Y
 SO624  05383687-0236432   M4.5      0.5   -2.9   nAcr   0.36    0.09       Y
 SO866  05390387-0220081   M4.5      1.0  -13.8   Acr?   0.86    0.09       Y
 SO165  05374527-0228521   M4.5      1.0   -8.0   nAcr   1.04    0.11       Y
 SO658  05384008-0250370   M4.5      1.0   -1.1   nAcr   0.57    0.11       Y
 SO628  05383745-0250236   M4.5      1.5   -5.1   nAcr   1.16    0.09       Y
 SO500  05382543-0242412   M4.5      2.0 -181.6    Acr   0.97    0.15       Y
 SO247  05375486-0241092   M5.0      0.5  -24.1    Acr    0.6     0.1       Y
 SO460  05382021-0238016   M5.0      0.5  -10.6   nAcr   1.44    0.14       Y
 SO435  05381778-0240500   M5.0      0.5  -13.8   nAcr   1.41     0.1       Y
 SO297  05380055-0245097   M5.0      0.5   -9.5   nAcr   0.74    0.07       Y
SO1207  05394661-0226313   M5.0      0.5   -9.9   nAcr   1.23    0.11       Y
 SO714  05384597-0245231   M5.0      0.5   -0.3   nAcr   1.02    0.12       Y
 SO933  05391232-0230064   M5.0      0.5   -5.5   nAcr   0.83    0.09       Y
 SO432  05381718-0222256   M5.0      0.5  -13.1   nAcr   0.97    0.14       Y
 SO566 J053832.13-023243   M5.0      1.0   -6.9   nAcr    0.4    0.08       Y
 SO271  05375745-0238444   M5.0      1.0  -15.5   Acr?   1.34    0.18       Y
 SO689  05384333-0232008   M5.0      2.0   -3.7   nAcr   0.96    0.12       Y
 SO107  05373514-0226577   M5.5      0.5  -14.3   nAcr   0.78    0.12       Y
 SO467  05382119-0254110   M5.5      0.5   -6.6   nAcr   0.84    0.12       Y
 SO283  05375840-0241262   M5.5      0.5  -14.3   Acr?   0.99    0.13       Y
 SO398  05381321-0224075   M5.5      1.0  -11.6   nAcr   1.03    0.14       Y

Meh... not a lot of late type sources... M5.5 is the latest. Oh well.

Script finished.