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From: mugpol@live.unc.edu
Subject: Sky Coverage Map for 3XMM-DR6
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Date: Wed, 6 Feb 2019 21:43:17 +0100
From: mugpol@live.unc.edu
To: xmmhelp@sciops.esa.int
Subject: Sky Coverage Map for 3XMM-DR6
Full_Name: MUGDHA SUNIL POLIMERA
Submission from: (NULL) (193.147.152.102)


Hello,

I'm trying to match the areas/volumes of the sky that are common for 3XMM-DR6
and the GALEX-SDSS-WISE Legacy Catalog and/or the RESOLVE/ECO surveys. 

What is the best way to know what are the coordinates of the AREA of the sky
that was covered for 3XMM-DR6 in all energy bands?
I'm trying to predict whether a galaxy was observed in X-RAy and did not have
emission or whether it doesn't show up as an X-Ray source because that part of
the sky was not looked at. 

Thanks,
Mugdha Polimera


Reply 1

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From: Jacobo Ebrero <xmmhelp@sciops.esa.int>
To: mugpol@live.unc.edu
Subject: Re: Sky Coverage Map for 3XMM-DR6 (PR#84620)
Date: Thu Feb  7 11:03:10 2019
Dear Mugdha,

The latest release of the 3XMM catalogue (3XMM-DR8) is available at the
XMM-Newton Science Archive:

http://nxsa.esac.esa.int/nxsa-web/#search

You may use it to cross-check any set of coordinates against the catalogue and
see if there are matches within a given radius.

Best regards,
Jacobo
----------------------
Dr. Jacobo Ebrero
XMM-Newton SOC
Community Support and Scientific Planning Team


Followup 1

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From: "Polimera, Mugdha Sunil" <mugpol@live.unc.edu>
To: Jacobo Ebrero <xmmhelp@sciops.esa.int>
Subject: Re: Sky Coverage Map for 3XMM-DR6 (PR#84620)
Date: Thu, 7 Feb 2019 11:15:03 +0000
--_000_BL0PR03MB4260F9E2674C1C0209916734EC680BL0PR03MB4260namp_
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Hello Jacob,

That would tell me which sources may have X-ray emission. Since I'm doing a=
 statistical analysis, I require to know which same AREAS of the sky were l=
ooked at.

For this, I need a coverage map, not a catalog list. For instance, if I plo=
t the sources on a sky map, if there are 'gaps' of no X-ray data, I need to=
 be able to differentiate between the two scenarios : 1) no data because no=
 X-ray sources detected OR 2) no data because the telescope did not take en=
ough (or any) data in that region of the sky.

Does that demonstrate my need better?
I'm looking for areas of the sky which have been observed in a way that if =
an X-ray source was present, it would have been detected.
If possible, I would also like a coverage map for areas of the sky that hav=
e been exposed for at least log(exposure time) between 4 and 4.5.

Regards,
Mugdha

Get Outlook for Android<https://aka.ms/ghei36>

________________________________
From: Jacobo Ebrero <xmmhelp@sciops.esa.int>
Sent: Thursday, February 7, 2019 5:05:27 AM
To: Polimera, Mugdha Sunil
Subject: Re: Sky Coverage Map for 3XMM-DR6 (PR#84620)

Dear Mugdha,

The latest release of the 3XMM catalogue (3XMM-DR8) is available at the
XMM-Newton Science Archive:

http://nxsa.esac.esa.int/nxsa-web/#search

You may use it to cross-check any set of coordinates against the catalogue =
and
see if there are matches within a given radius.

Best regards,
Jacobo
----------------------
Dr. Jacobo Ebrero
XMM-Newton SOC
Community Support and Scientific Planning Team

This message is intended only for the recipient(s) named above. It may cont=
ain proprietary information and/or
protected content. Any unauthorised disclosure, use, retention or dissemina=
tion is prohibited. If you have received
this e-mail in error, please notify the sender immediately. ESA applies app=
ropriate organisational measures to protect
personal data, in case of data privacy queries, please contact the ESA Data=
 Protection Officer (dpo@esa.int).



--_000_BL0PR03MB4260F9E2674C1C0209916734EC680BL0PR03MB4260namp_
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<meta name=3D"Generator" content=3D"Microsoft Exchange Server">
<!-- converted from text --><style><!-- .EmailQuote {
margin-left: 1pt; pad=
ding-left: 4pt; border-left: #800000 2px solid; } --></style>
</head>
<body>
<div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
Hello Jacob, <br>
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
That would tell me which sources may have X-ray emission. Since I'm doing a=
 statistical analysis, I require to know which same AREAS of the sky were l=
ooked at.
<br>
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
For this, I need a coverage map, not a catalog list. For instance, if I plo=
t the sources on a sky map, if there are 'gaps' of no X-ray data, I need to=
 be able to differentiate between the two scenarios : 1) no data because no=
 X-ray sources detected OR 2) no
 data because the telescope did not take enough (or any) data in that regio=
n of the sky.
<br>
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
Does that demonstrate my need better? <br>
</div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
I'm looking for areas of the sky which have been observed in a way that if =
an X-ray source was present, it would have been detected.
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
If possible, I would also like a coverage map for areas of the sky that hav=
e been exposed for at least log(exposure time) between 4 and 4.5.
<br>
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
Regards, <br>
</div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
Mugdha <br>
<br>
</div>
<div dir=3D"auto" style=3D"direction:ltr; margin:0; padding:0; font-family:=
sans-serif; font-size:11pt; color:black">
<div dir=3D"auto" style=3D"direction:ltr; margin:0; pa

Message of length 7153 truncated


Reply 2

Resend
From: Jacobo Ebrero <xmmhelp@sciops.esa.int>
To: mugpol@live.unc.edu
Subject: Re: Sky Coverage Map for 3XMM-DR6 (PR#84620)
Date: Fri Feb  8 14:10:50 2019
Dear Mughda,

You are then looking for something like the MOC (Multi-Order Coverage file),
which can be found in FITS format for the XMM-Newton/EPIC coverage, to be used
e.g. with 
TOPCAT or any other tool you may use for your cross-match, here:

http://skies.esac.esa.int/XMM-Newton/EPIC-RGB/

Please note that the XMM-Newton FOV can be approximated by a circle of ~15-18
arcmin radius: you can use this condition to joint your list with the XSA
database content, which can be queried via the Table Access Protocol (TAP):

http://nxsa.esac.esa.int/nxsa-web/#tap

Otherwise you can upload your list to TOPCAT and cross-match it with the xmmlog
file available from Vizier, using the "Pair Match" functionality with a radius
of 15-18 arcmin. Note that the xmmlog file is updated daily, while the MOC file
is updated every several months.

We hope that this helps.

Best regards,
Jacobo

----------------------
Dr. Jacobo Ebrero
XMM-Newton SOC
Community Support and Scientific Planning Team

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