NASA / IPAC Extragalactic Database

02/23/2024

The February 2024 release of NED is out!

This includes:
- 172K new object links to over 800 new references,
- 162K new redshift measurements were added, including data for 24K objects that previously had no redshift

Additionally, the NED gravitational wave follow-up service
https://ned.ipac.caltech.edu/NED::GWFoverview/
is continuing to cross-match galaxies with LIGO-Virgo-KAGRA (LVK) GW events for the fourth observing run. The prioritization scheme is based on the joint WISE luminosity and the 3D volume probabilities, and the NED-LVS galaxy sample (Cook et al. 2023 https://ned.ipac.caltech.edu/uri/ADS::Bibcode/2023ApJS..268...14C)

Also, please spread the word about the document "Best Practices for Data Publication in the Astronomical Literature (Chen et al. 2022 https://ned.ipac.caltech.edu/uri/ADS::Bibcode/2022ApJS..260....5C)".

The purpose of this NED service is to facilitate searches for electromagnetic (EM) counterparts to gravitational wave (GW) events. Within minutes after the Laser Interferometer Gravitational-Wave Observatory (LIGO)-Virgo-Kagra collaboration (LVK) issues an alert using the General Coordinates Network...

01/06/2024

NED is at the 243rd AAS meeting! The "Best Practices for Data Publication in the Astronomical Literature" workshop will be in the Ernest N. Morial Convention Center, Room 209 from 2:00pm-4:00pm today. You can also find us at the Caltech/IPAC booth (Booth 615) in the exhibit hall from Sunday evening, Jan 7 through Wednesday, Jan 10. Come talk to us and get a demo on the latest features and functions of the NED's User Interface!

12/22/2023

We wish to thank everyone who participated in the 2023 NED User Survey (Oct 18 to Dec 4). The valuable feedback provided deepens our understanding of the evolving needs of the community as we continue to expand NED's holdings and science functionality.

We would also like to remind people to register for the workshop on the "Best Practices for Data Publication in the Astronomical Literature" (2022ApJS..260....5C https://iopscience.iop.org/article/10.3847/1538-4365/ac6268) at the 243rd AAS meeting on Jan. 6, 2024 at 2:00 PM. The last day to register in Jan 2.

The American Astronomical Society (AAS), established in 1899 and based in Washington, DC, is the major organization of professional astronomers in North America. Its membership of about 7,000 individuals also includes physicists, mathematicians, geologists, engineers, and others whose research and e...

11/27/2023

A friendly reminder that NED is conducting a user survey to gather feedback from our community, and the survey is scheduled to conclude on Monday, December 4th. If you can spare 5 to 8 minutes, we would greatly appreciate your input.

Take this survey powered by surveymonkey.com. Create your own surveys for free.

10/23/2023

NED is running a workshop on the "Best Practices for Data Publication in the Astronomical Literature" (2022ApJS..260....5C) at the 243rd AAS meeting. If you are interested in attending, please include the workshop when you register for the AAS243 meeting. Looking forward to seeing you there!

10/19/2023

NED is running a user's survey to collect your feedback regarding our current content and services. Please help us better understand your needs and establish priorities for planning future database developments. This survey consists of 12 questions and should take about 5-8 mins. Thank you!

Take this survey powered by surveymonkey.com. Create your own surveys for free.

08/29/2023

The August 2023 release of NED is out! We added 171K new object links to over 1300 new references, 153K new sources cross-identified with NED objects, and 98 K new redshift measurements. Additionally, the NED gravitational wave follow-up service is also updated with a new galaxy prioritization scheme based on the joint WISE luminosity and the 3D volume probabilities, and the NED-LVS galaxy sample. For more details, please visit our release news page at
https://ned.ipac.caltech.edu/Documents/Overview/Release

06/05/2023

NED is at the AAS 242 meeting this week! Find us at the Caltech/IPAC booth in the exhibit hall for demos of NED functions, and in Room 220 on Wednesday at 10 am for a talk on "Best Practices for Data Publication to Advance Open Science" by Dr. Tracy Chen.

04/20/2023

The April 2023 Release of NED is now available, which includes 119K new object links to over a thousand new references, 91K new sources cross-identified with NED objects, and 77 K new redshift measurements! Content accessible by the VO TAP service and the NED object lookup (NOLU) web API hosted on the cloud (AWS), have also been updated. For more details, please visit our release news page at
https://ned.ipac.caltech.edu/Documents/Overview/Release

01/08/2023

NED is at the AAS 241 meeting! Tune in on Wednesday at 2:15 pm for a NASA Hyperwall talk by NED science lead Dr. Joseph Mazzarella on "NED and Open Science", and find us anytime at the Caltech/IPAC booth for demos of NED features and functions.

12/08/2022

The November 2022 Release of NED is now available.
This includes:
- 71K new object links (pointers) added to nearly a thousand new references
- 54K new sources from the literature which were cross-identified with NED objects
- 35K new redshift measurements were added, including data for 5K objects that previously had no redshift
See our release news page at http://ned.ipac.caltech.edu/Documents/Overview/Release

Also, please spread the word about the document "Best Practices for Data Publication in the Astronomical
Literature (Chen et al. 2022 - https://ned.ipac.caltech.edu/.../ADS.../2022ApJS..260....5C )".

The NASA/IPAC Extragalactic Database (NED) is funded by the National Aeronautics and Space Administration and operated by the California Institute of Technology.

10/05/2022

Our chat with AAS Journals' Associate Editor-in-Chief Frank Timmes on "Best Practices for Data Publication in the Astronomical Literature" is out. Check the video below, and please refer to the article before submission to a journal. This will really help streamline integration of data from your publications into NED. Thanks!

🆕 AAS Journal Author Series Video! Tracy Chen & Marion Schmitz (Caltech/ NASA / IPAC Extragalactic Database) chat with Frank Timmes about their AAS Journal article on data publication: https://www.youtube.com/watch?v=vKF-Zrkx7gU

This series connects authors with their article, their human story & the larger community.

09/21/2022

https://www.caltech.edu/about/news/caltech-mourns-the-passing-of-maarten-schmidt-1929-2022?fbclid=IwAR0C49jLNO_VhZ8NkQ8mJN4xh6XJY0ZNMSf4qraZR9iD5P6AzhoI-sE7ETE&mibextid=epqs5l

Maarten Schmidt, known for his 1963 discovery of quasars, has passed away.

08/26/2022

The August 2022 Release of NED is now available.

This includes:
- 131K new object links (pointers) added to nearly a thousand new references
- 75K new sources from the literature which were cross-identified with NED objects
- 125K new redshift measurements were added, including data for 22K objects that previously had no redshift

See our release news page at http://ned.ipac.caltech.edu/Documents/Overview/Release

Also, please spread the word about the document "Best Practices for Data Publication in the Astronomical
Literature (Chen et al. 2022 - https://ned.ipac.caltech.edu/uri/ADS::Bibcode/2022ApJS..260....5C )".

We present an overview of best practices for publishing data in astronomy and astrophysics journals. These recommendations are intended as a reference for authors to help prepare and publish data in a way that will better represent and support science results, enable better data sharing, improve rep...

06/09/2022

The AAS 240 meeting is next week. Here's a quick look at all NED-related activities at the meeting. Hope to see you there!https://ned.ipac.caltech.edu/docs/NEDCurrentBrochure.pdf

06/08/2022

AstroFest 2022 kicks off a week of FREE family-friendly, space-themed fun on Saturday, June 11! Join us 2-8 pm for hands-on activities, creative displays, interactive VR demos, solar telescopes, and more at the Pasadena Convention Center.

https://www.cityofastronomy.org/astrofest2022

12/17/2021

The December 2021 Release of NED is now available! There have been some performance and user experience improvements such as:
Batch job status reports are updated to more accurately reflect the processing stages: accepted --> waiting --> running --> complete.
Display formatting is improved in NED abstracts, batch job status reports, and some error messages.
Some backend system components and services are updated.

See our release news page at

The Chandra Source Catalog (CSC 2.0.1) has been integrated into NED. CSC 2.0.1 includes measured properties such as positions, photometry and source extent information for 317,167 unique compact and extended X-ray sources in the sky, out of which 80% were cross-matched with existing objects and 20%....

11/18/2021

The November 2021 release of NED is now available! We've integrated the Chandra Source Catalog (CSC 2.0.1), with over 317K unique X-ray sources, into the database. In addition, 989K new object links (pointers) were added to over a thousand new references, 323K new sources from the literature were cross-identified with NED objects, and 5.3 million new photometric data points have been integrated into SEDs.

See our release news page at

The Chandra Source Catalog (CSC 2.0.1) has been integrated into NED. CSC 2.0.1 includes measured properties such as positions, photometry and source extent information for 317,167 unique compact and extended X-ray sources in the sky, out of which 80% were cross-matched with existing objects and 20%....

07/02/2021

The July 2021 release of NED is now available! We've added 1.7M new object pointers, 59K new redshifts, 888K new photometric data points, and more. See more details at

Newly automated procedure to assign fiducial redshifts: Many objects in NED have multiple redshift measurements, and the fiducial (preferred) redshifts that appear in each object’s Overview and in multi-object search result tables have historically been chosen by human experts during the data inge...

06/28/2021

Here's a nice shared piece from CDS about the Best Practices document and the European Astronomical Society meeting!

Tomorrow at EAS , two CDS documentalists will explain how astronomer's publications are processed at CDS to be viewed in SIMBAD, VizieR, Aladin and all the VO tools.

A good opportunity to talk about the "Best Practices for Data Publication in the Astronomical Literature" (an article written by a dozen of data centers and publishers: NED, the CfA, the AAS, the Space Telescope Science Institute, the CDS, and more --https://ui.adsabs.harvard.edu/abs/2021arXiv210601477C/abstract)
Take a look at this excellent summary made by the NED team here: https://zenodo.org/record/4894332

06/09/2021

Part of our AAS238 webinar on the "Best Practices for Data Publication in the Astronomical Literature" is available now on our YouTube channel.

This is part of the NED webinar at the AAS 238 meeting that presents the recently updated "Best Practices for Data Publication in the Astronomical Literature...

06/09/2021

Join our webinar today (12:30 - 1 pm ET) if you are at the meeting, and find what's new in NED!

06/07/2021

We are at the AAS 238 meeting, virtually! Drop by our booth if you have any question or comment for NED, or simply want a demo of the latest features. NED lead scientist Joseph Mazzarella is also giving a webinar on Wednesday on the new content and capabilities in NED. Stay tuned!

06/04/2021

Our "Best Practices for Data Publication in the Astronomical Literature" is on astro-ph today (https://arxiv.org/abs/2106.01477). This is a collective effort from different archives and journal publishers, to provide a reference for anyone involved in data/metadata publication in astronomical literature. We recommend you use it in your own data publication and we welcome any feedback you may have.

We present an overview of best practices for publishing data in astronomy and astrophysics journals. These recommendations are intended as a reference for authors to help prepare and publish data in a way that will better represent and support science results, enable better data sharing, improve rep...

06/01/2021

The May 2021 Release of NED is now available.
These include Performance and User Experience improvements, such as
- A list of possible names to assist users when ambiguous inputs are detected for searches using object names.
- Options for By Name and Near Name or Position (Cone) searches are now preserved on screen for the next search.
- A spinning wheel is displayed to indicate when a By Name search or a Near Name or Position (Cone) search is in progress.
- The full tool bar for "Survey Coverage" maps is now encapsulated inside the display area for easier interaction with the maps.
- Various system updates were made to improve the performance of searches.
See our release news page at http://ned.ipac.caltech.edu/Documents/Overview/Release

We'll also be participating in the AAS238 meeting next week.
Please visit us and check your program for details.

The NASA/IPAC Extragalactic Database (NED) is funded by the National Aeronautics and Space Administration and operated by the California Institute of Technology.

03/10/2021

The March 2021 release of NED is available!

Highlights include 890,185 new redshifts from the
2MASS Photometric Redshift Catalog (2014ApJS..210....9B)
(https://ned.ipac.caltech.edu/uri/ADS::Bibcode/2014ApJS..210....9B),
29,067 new photometric data points, and 517,076 new object links (pointers) to the refereed literature.

See all the details at:
http://ned.ipac.caltech.edu/Documents/Overview/Release

The NASA/IPAC Extragalactic Database (NED) is funded by the National Aeronautics and Space Administration and operated by the California Institute of Technology.

03/04/2021

We just rolled out a new video tutorial that provides an overview of the NED user interface. Check it out at https://www.youtube.com/watch?v=BCW6awQ2o4Q, and don't forget to subscribe to our YouTube channel (https://www.youtube.com/channel/UCogUNzCeGRfCr2gYi0sqbOg) for future updates.

This tutorial provides an overview of the NED user interface,and highlight the tools and services that it provides.

01/27/2021

In case you missed it at the AAS237 meeting, our webinar on the "New Content and Capabilities in the NASA/IPAC Extragalactic Database" is available on NED's YouTube channel now. https://www.youtube.com/watch?v=hFtjset_Etk&t

This is a recorded webinar on the latest updates of NED given by NED's Science Lead Joe Mazzarella at the 237th meeting of the American Astronomical Society ...

01/11/2021

If you are attending the AAS meeting, our webinar on the "New Content and Capabilities in the NASA/IPAC Extragalactic Database" is today, at 2:30 ET (11:30 PT). See you there.

01/08/2021

The AAS meeting is next week. Join our webinar on Monday (2:30 pm ET) to learn about new content and capabilities in NED. We'll also be available at the virtual Caltech/IPAC booth daily from 10 am to 8 pm ET for any questions or demos on new NED features. You can download our latest brochure at https://ned.ipac.caltech.edu/docs/NEDCurrentBrochure.pdf. See you online next week!